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Diffstat (limited to 'libs/raylib/src/rlgl.h')
| -rw-r--r-- | libs/raylib/src/rlgl.h | 4069 |
1 files changed, 0 insertions, 4069 deletions
diff --git a/libs/raylib/src/rlgl.h b/libs/raylib/src/rlgl.h deleted file mode 100644 index e67d743..0000000 --- a/libs/raylib/src/rlgl.h +++ /dev/null @@ -1,4069 +0,0 @@ -/********************************************************************************************** -* -* rlgl v3.7 - raylib OpenGL abstraction layer -* -* rlgl is a wrapper for multiple OpenGL versions (1.1, 2.1, 3.3 Core, ES 2.0) to -* pseudo-OpenGL 1.1 style functions (rlVertex, rlTranslate, rlRotate...). -* -* When chosing an OpenGL version greater than OpenGL 1.1, rlgl stores vertex data on internal -* VBO buffers (and VAOs if available). It requires calling 3 functions: -* rlglInit() - Initialize internal buffers and auxiliary resources -* rlglClose() - De-initialize internal buffers data and other auxiliar resources -* -* CONFIGURATION: -* -* #define GRAPHICS_API_OPENGL_11 -* #define GRAPHICS_API_OPENGL_21 -* #define GRAPHICS_API_OPENGL_33 -* #define GRAPHICS_API_OPENGL_ES2 -* Use selected OpenGL graphics backend, should be supported by platform -* Those preprocessor defines are only used on rlgl module, if OpenGL version is -* required by any other module, use rlGetVersion() to check it -* -* #define RLGL_IMPLEMENTATION -* Generates the implementation of the library into the included file. -* If not defined, the library is in header only mode and can be included in other headers -* or source files without problems. But only ONE file should hold the implementation. -* -* #define RLGL_STANDALONE -* Use rlgl as standalone library (no raylib dependency) -* -* #define SUPPORT_GL_DETAILS_INFO -* Show OpenGL extensions and capabilities detailed logs on init -* -* DEPENDENCIES: -* raymath - 3D math functionality (Vector3, Matrix, Quaternion) -* GLAD - OpenGL extensions loading (OpenGL 3.3 Core only) -* -* -* LICENSE: zlib/libpng -* -* Copyright (c) 2014-2021 Ramon Santamaria (@raysan5) -* -* This software is provided "as-is", without any express or implied warranty. In no event -* will the authors be held liable for any damages arising from the use of this software. -* -* Permission is granted to anyone to use this software for any purpose, including commercial -* applications, and to alter it and redistribute it freely, subject to the following restrictions: -* -* 1. The origin of this software must not be misrepresented; you must not claim that you -* wrote the original software. If you use this software in a product, an acknowledgment -* in the product documentation would be appreciated but is not required. -* -* 2. Altered source versions must be plainly marked as such, and must not be misrepresented -* as being the original software. -* -* 3. This notice may not be removed or altered from any source distribution. -* -**********************************************************************************************/ - -#ifndef RLGL_H -#define RLGL_H - -#if defined(RLGL_STANDALONE) - #define RAYMATH_STANDALONE - #define RAYMATH_HEADER_ONLY - - #define RLAPI // We are building or using rlgl as a static library (or Linux shared library) - - #if defined(_WIN32) - #if defined(BUILD_LIBTYPE_SHARED) - #define RLAPI __declspec(dllexport) // We are building raylib as a Win32 shared library (.dll) - #elif defined(USE_LIBTYPE_SHARED) - #define RLAPI __declspec(dllimport) // We are using raylib as a Win32 shared library (.dll) - #endif - #endif - - // Support TRACELOG macros - #if !defined(TRACELOG) - #define TRACELOG(level, ...) (void)0 - #define TRACELOGD(...) (void)0 - #endif - - // Allow custom memory allocators - #ifndef RL_MALLOC - #define RL_MALLOC(sz) malloc(sz) - #endif - #ifndef RL_CALLOC - #define RL_CALLOC(n,sz) calloc(n,sz) - #endif - #ifndef RL_REALLOC - #define RL_REALLOC(n,sz) realloc(n,sz) - #endif - #ifndef RL_FREE - #define RL_FREE(p) free(p) - #endif -#else - #include "raylib.h" // Required for: Shader, Texture2D -#endif - -#include "raymath.h" // Required for: Vector3, Matrix - -// Security check in case no GRAPHICS_API_OPENGL_* defined -#if !defined(GRAPHICS_API_OPENGL_11) && \ - !defined(GRAPHICS_API_OPENGL_21) && \ - !defined(GRAPHICS_API_OPENGL_33) && \ - !defined(GRAPHICS_API_OPENGL_ES2) - #define GRAPHICS_API_OPENGL_33 -#endif - -// Security check in case multiple GRAPHICS_API_OPENGL_* defined -#if defined(GRAPHICS_API_OPENGL_11) - #if defined(GRAPHICS_API_OPENGL_21) - #undef GRAPHICS_API_OPENGL_21 - #endif - #if defined(GRAPHICS_API_OPENGL_33) - #undef GRAPHICS_API_OPENGL_33 - #endif - #if defined(GRAPHICS_API_OPENGL_ES2) - #undef GRAPHICS_API_OPENGL_ES2 - #endif -#endif - -// OpenGL 2.1 uses most of OpenGL 3.3 Core functionality -// WARNING: Specific parts are checked with #if defines -#if defined(GRAPHICS_API_OPENGL_21) - #define GRAPHICS_API_OPENGL_33 -#endif - -#define SUPPORT_RENDER_TEXTURES_HINT - -//---------------------------------------------------------------------------------- -// Defines and Macros -//---------------------------------------------------------------------------------- -// Default internal render batch limits -#ifndef DEFAULT_BATCH_BUFFER_ELEMENTS - #if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - // This is the maximum amount of elements (quads) per batch - // NOTE: Be careful with text, every letter maps to a quad - #define DEFAULT_BATCH_BUFFER_ELEMENTS 8192 - #endif - #if defined(GRAPHICS_API_OPENGL_ES2) - // We reduce memory sizes for embedded systems (RPI and HTML5) - // NOTE: On HTML5 (emscripten) this is allocated on heap, - // by default it's only 16MB!...just take care... - #define DEFAULT_BATCH_BUFFER_ELEMENTS 2048 - #endif -#endif -#ifndef DEFAULT_BATCH_BUFFERS - #define DEFAULT_BATCH_BUFFERS 1 // Default number of batch buffers (multi-buffering) -#endif -#ifndef DEFAULT_BATCH_DRAWCALLS - #define DEFAULT_BATCH_DRAWCALLS 256 // Default number of batch draw calls (by state changes: mode, texture) -#endif -#ifndef MAX_BATCH_ACTIVE_TEXTURES - #define MAX_BATCH_ACTIVE_TEXTURES 4 // Maximum number of additional textures that can be activated on batch drawing (SetShaderValueTexture()) -#endif - -// Internal Matrix stack -#ifndef MAX_MATRIX_STACK_SIZE - #define MAX_MATRIX_STACK_SIZE 32 // Maximum size of Matrix stack -#endif - -// Vertex buffers id limit -#ifndef MAX_MESH_VERTEX_BUFFERS - #define MAX_MESH_VERTEX_BUFFERS 7 // Maximum vertex buffers (VBO) per mesh -#endif - -// Shader and material limits -#ifndef MAX_SHADER_LOCATIONS - #define MAX_SHADER_LOCATIONS 32 // Maximum number of shader locations supported -#endif -#ifndef MAX_MATERIAL_MAPS - #define MAX_MATERIAL_MAPS 12 // Maximum number of shader maps supported -#endif - -// Projection matrix culling -#ifndef RL_CULL_DISTANCE_NEAR - #define RL_CULL_DISTANCE_NEAR 0.01 // Default near cull distance -#endif -#ifndef RL_CULL_DISTANCE_FAR - #define RL_CULL_DISTANCE_FAR 1000.0 // Default far cull distance -#endif - -// Texture parameters (equivalent to OpenGL defines) -#define RL_TEXTURE_WRAP_S 0x2802 // GL_TEXTURE_WRAP_S -#define RL_TEXTURE_WRAP_T 0x2803 // GL_TEXTURE_WRAP_T -#define RL_TEXTURE_MAG_FILTER 0x2800 // GL_TEXTURE_MAG_FILTER -#define RL_TEXTURE_MIN_FILTER 0x2801 // GL_TEXTURE_MIN_FILTER - -#define RL_TEXTURE_FILTER_NEAREST 0x2600 // GL_NEAREST -#define RL_TEXTURE_FILTER_LINEAR 0x2601 // GL_LINEAR -#define RL_TEXTURE_FILTER_MIP_NEAREST 0x2700 // GL_NEAREST_MIPMAP_NEAREST -#define RL_TEXTURE_FILTER_NEAREST_MIP_LINEAR 0x2702 // GL_NEAREST_MIPMAP_LINEAR -#define RL_TEXTURE_FILTER_LINEAR_MIP_NEAREST 0x2701 // GL_LINEAR_MIPMAP_NEAREST -#define RL_TEXTURE_FILTER_MIP_LINEAR 0x2703 // GL_LINEAR_MIPMAP_LINEAR -#define RL_TEXTURE_FILTER_ANISOTROPIC 0x3000 // Anisotropic filter (custom identifier) - -#define RL_TEXTURE_WRAP_REPEAT 0x2901 // GL_REPEAT -#define RL_TEXTURE_WRAP_CLAMP 0x812F // GL_CLAMP_TO_EDGE -#define RL_TEXTURE_WRAP_MIRROR_REPEAT 0x8370 // GL_MIRRORED_REPEAT -#define RL_TEXTURE_WRAP_MIRROR_CLAMP 0x8742 // GL_MIRROR_CLAMP_EXT - -// Matrix modes (equivalent to OpenGL) -#define RL_MODELVIEW 0x1700 // GL_MODELVIEW -#define RL_PROJECTION 0x1701 // GL_PROJECTION -#define RL_TEXTURE 0x1702 // GL_TEXTURE - -// Primitive assembly draw modes -#define RL_LINES 0x0001 // GL_LINES -#define RL_TRIANGLES 0x0004 // GL_TRIANGLES -#define RL_QUADS 0x0007 // GL_QUADS - -// GL equivalent data types -#define RL_UNSIGNED_BYTE 0x1401 // GL_UNSIGNED_BYTE -#define RL_FLOAT 0x1406 // GL_FLOAT - -//---------------------------------------------------------------------------------- -// Types and Structures Definition -//---------------------------------------------------------------------------------- -typedef enum { OPENGL_11 = 1, OPENGL_21, OPENGL_33, OPENGL_ES_20 } GlVersion; - -typedef enum { - RL_ATTACHMENT_COLOR_CHANNEL0 = 0, - RL_ATTACHMENT_COLOR_CHANNEL1, - RL_ATTACHMENT_COLOR_CHANNEL2, - RL_ATTACHMENT_COLOR_CHANNEL3, - RL_ATTACHMENT_COLOR_CHANNEL4, - RL_ATTACHMENT_COLOR_CHANNEL5, - RL_ATTACHMENT_COLOR_CHANNEL6, - RL_ATTACHMENT_COLOR_CHANNEL7, - RL_ATTACHMENT_DEPTH = 100, - RL_ATTACHMENT_STENCIL = 200, -} FramebufferAttachType; - -typedef enum { - RL_ATTACHMENT_CUBEMAP_POSITIVE_X = 0, - RL_ATTACHMENT_CUBEMAP_NEGATIVE_X, - RL_ATTACHMENT_CUBEMAP_POSITIVE_Y, - RL_ATTACHMENT_CUBEMAP_NEGATIVE_Y, - RL_ATTACHMENT_CUBEMAP_POSITIVE_Z, - RL_ATTACHMENT_CUBEMAP_NEGATIVE_Z, - RL_ATTACHMENT_TEXTURE2D = 100, - RL_ATTACHMENT_RENDERBUFFER = 200, -} FramebufferAttachTextureType; - -// Dynamic vertex buffers (position + texcoords + colors + indices arrays) -typedef struct VertexBuffer { - int elementsCount; // Number of elements in the buffer (QUADS) - - int vCounter; // Vertex position counter to process (and draw) from full buffer - int tcCounter; // Vertex texcoord counter to process (and draw) from full buffer - int cCounter; // Vertex color counter to process (and draw) from full buffer - - float *vertices; // Vertex position (XYZ - 3 components per vertex) (shader-location = 0) - float *texcoords; // Vertex texture coordinates (UV - 2 components per vertex) (shader-location = 1) - unsigned char *colors; // Vertex colors (RGBA - 4 components per vertex) (shader-location = 3) -#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - unsigned int *indices; // Vertex indices (in case vertex data comes indexed) (6 indices per quad) -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - unsigned short *indices; // Vertex indices (in case vertex data comes indexed) (6 indices per quad) -#endif - unsigned int vaoId; // OpenGL Vertex Array Object id - unsigned int vboId[4]; // OpenGL Vertex Buffer Objects id (4 types of vertex data) -} VertexBuffer; - -// Draw call type -// NOTE: Only texture changes register a new draw, other state-change-related elements are not -// used at this moment (vaoId, shaderId, matrices), raylib just forces a batch draw call if any -// of those state-change happens (this is done in core module) -typedef struct DrawCall { - int mode; // Drawing mode: LINES, TRIANGLES, QUADS - int vertexCount; // Number of vertex of the draw - int vertexAlignment; // Number of vertex required for index alignment (LINES, TRIANGLES) - //unsigned int vaoId; // Vertex array id to be used on the draw -> Using RLGL.currentBatch->vertexBuffer.vaoId - //unsigned int shaderId; // Shader id to be used on the draw -> Using RLGL.currentShader.id - unsigned int textureId; // Texture id to be used on the draw -> Use to create new draw call if changes - - //Matrix projection; // Projection matrix for this draw -> Using RLGL.projection by default - //Matrix modelview; // Modelview matrix for this draw -> Using RLGL.modelview by default -} DrawCall; - -// RenderBatch type -typedef struct RenderBatch { - int buffersCount; // Number of vertex buffers (multi-buffering support) - int currentBuffer; // Current buffer tracking in case of multi-buffering - VertexBuffer *vertexBuffer; // Dynamic buffer(s) for vertex data - - DrawCall *draws; // Draw calls array, depends on textureId - int drawsCounter; // Draw calls counter - float currentDepth; // Current depth value for next draw -} RenderBatch; - -// Shader attribute data types -typedef enum { - SHADER_ATTRIB_FLOAT = 0, - SHADER_ATTRIB_VEC2, - SHADER_ATTRIB_VEC3, - SHADER_ATTRIB_VEC4 -} ShaderAttributeDataType; - -#if defined(RLGL_STANDALONE) - #ifndef __cplusplus - // Boolean type - typedef enum { false, true } bool; - #endif - - // Color type, RGBA (32bit) - typedef struct Color { - unsigned char r; - unsigned char g; - unsigned char b; - unsigned char a; - } Color; - - // Texture type - // NOTE: Data stored in GPU memory - typedef struct Texture2D { - unsigned int id; // OpenGL texture id - int width; // Texture base width - int height; // Texture base height - int mipmaps; // Mipmap levels, 1 by default - int format; // Data format (PixelFormat) - } Texture2D; - - // Shader type (generic) - typedef struct Shader { - unsigned int id; // Shader program id - int *locs; // Shader locations array (MAX_SHADER_LOCATIONS) - } Shader; - - // TraceLog message types - typedef enum { - LOG_ALL, - LOG_TRACE, - LOG_DEBUG, - LOG_INFO, - LOG_WARNING, - LOG_ERROR, - LOG_FATAL, - LOG_NONE - } TraceLogLevel; - - // Texture formats (support depends on OpenGL version) - typedef enum { - PIXELFORMAT_UNCOMPRESSED_GRAYSCALE = 1, // 8 bit per pixel (no alpha) - PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA, - PIXELFORMAT_UNCOMPRESSED_R5G6B5, // 16 bpp - PIXELFORMAT_UNCOMPRESSED_R8G8B8, // 24 bpp - PIXELFORMAT_UNCOMPRESSED_R5G5B5A1, // 16 bpp (1 bit alpha) - PIXELFORMAT_UNCOMPRESSED_R4G4B4A4, // 16 bpp (4 bit alpha) - PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, // 32 bpp - PIXELFORMAT_UNCOMPRESSED_R32, // 32 bpp (1 channel - float) - PIXELFORMAT_UNCOMPRESSED_R32G32B32, // 32*3 bpp (3 channels - float) - PIXELFORMAT_UNCOMPRESSED_R32G32B32A32, // 32*4 bpp (4 channels - float) - PIXELFORMAT_COMPRESSED_DXT1_RGB, // 4 bpp (no alpha) - PIXELFORMAT_COMPRESSED_DXT1_RGBA, // 4 bpp (1 bit alpha) - PIXELFORMAT_COMPRESSED_DXT3_RGBA, // 8 bpp - PIXELFORMAT_COMPRESSED_DXT5_RGBA, // 8 bpp - PIXELFORMAT_COMPRESSED_ETC1_RGB, // 4 bpp - PIXELFORMAT_COMPRESSED_ETC2_RGB, // 4 bpp - PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA, // 8 bpp - PIXELFORMAT_COMPRESSED_PVRT_RGB, // 4 bpp - PIXELFORMAT_COMPRESSED_PVRT_RGBA, // 4 bpp - PIXELFORMAT_COMPRESSED_ASTC_4x4_RGBA, // 8 bpp - PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA // 2 bpp - } PixelFormat; - - // Texture parameters: filter mode - // NOTE 1: Filtering considers mipmaps if available in the texture - // NOTE 2: Filter is accordingly set for minification and magnification - typedef enum { - TEXTURE_FILTER_POINT = 0, // No filter, just pixel aproximation - TEXTURE_FILTER_BILINEAR, // Linear filtering - TEXTURE_FILTER_TRILINEAR, // Trilinear filtering (linear with mipmaps) - TEXTURE_FILTER_ANISOTROPIC_4X, // Anisotropic filtering 4x - TEXTURE_FILTER_ANISOTROPIC_8X, // Anisotropic filtering 8x - TEXTURE_FILTER_ANISOTROPIC_16X, // Anisotropic filtering 16x - } TextureFilter; - - // Texture parameters: wrap mode - typedef enum { - TEXTURE_WRAP_REPEAT = 0, // Repeats texture in tiled mode - TEXTURE_WRAP_CLAMP, // Clamps texture to edge pixel in tiled mode - TEXTURE_WRAP_MIRROR_REPEAT, // Mirrors and repeats the texture in tiled mode - TEXTURE_WRAP_MIRROR_CLAMP // Mirrors and clamps to border the texture in tiled mode - } TextureWrap; - - // Color blending modes (pre-defined) - typedef enum { - BLEND_ALPHA = 0, // Blend textures considering alpha (default) - BLEND_ADDITIVE, // Blend textures adding colors - BLEND_MULTIPLIED, // Blend textures multiplying colors - BLEND_ADD_COLORS, // Blend textures adding colors (alternative) - BLEND_SUBTRACT_COLORS, // Blend textures subtracting colors (alternative) - BLEND_CUSTOM // Belnd textures using custom src/dst factors (use SetBlendModeCustom()) - } BlendMode; - - // Shader location point type - typedef enum { - SHADER_LOC_VERTEX_POSITION = 0, - SHADER_LOC_VERTEX_TEXCOORD01, - SHADER_LOC_VERTEX_TEXCOORD02, - SHADER_LOC_VERTEX_NORMAL, - SHADER_LOC_VERTEX_TANGENT, - SHADER_LOC_VERTEX_COLOR, - SHADER_LOC_MATRIX_MVP, - SHADER_LOC_MATRIX_MODEL, - SHADER_LOC_MATRIX_VIEW, - SHADER_LOC_MATRIX_NORMAL, - SHADER_LOC_MATRIX_PROJECTION, - SHADER_LOC_VECTOR_VIEW, - SHADER_LOC_COLOR_DIFFUSE, - SHADER_LOC_COLOR_SPECULAR, - SHADER_LOC_COLOR_AMBIENT, - SHADER_LOC_MAP_ALBEDO, // SHADER_LOC_MAP_DIFFUSE - SHADER_LOC_MAP_METALNESS, // SHADER_LOC_MAP_SPECULAR - SHADER_LOC_MAP_NORMAL, - SHADER_LOC_MAP_ROUGHNESS, - SHADER_LOC_MAP_OCCLUSION, - SHADER_LOC_MAP_EMISSION, - SHADER_LOC_MAP_HEIGHT, - SHADER_LOC_MAP_CUBEMAP, - SHADER_LOC_MAP_IRRADIANCE, - SHADER_LOC_MAP_PREFILTER, - SHADER_LOC_MAP_BRDF - } ShaderLocationIndex; - - #define SHADER_LOC_MAP_DIFFUSE SHADER_LOC_MAP_ALBEDO - #define SHADER_LOC_MAP_SPECULAR SHADER_LOC_MAP_METALNESS - - // Shader uniform data types - typedef enum { - SHADER_UNIFORM_FLOAT = 0, - SHADER_UNIFORM_VEC2, - SHADER_UNIFORM_VEC3, - SHADER_UNIFORM_VEC4, - SHADER_UNIFORM_INT, - SHADER_UNIFORM_IVEC2, - SHADER_UNIFORM_IVEC3, - SHADER_UNIFORM_IVEC4, - SHADER_UNIFORM_SAMPLER2D - } ShaderUniformDataType; -#endif - -#if defined(__cplusplus) -extern "C" { // Prevents name mangling of functions -#endif - -//------------------------------------------------------------------------------------ -// Functions Declaration - Matrix operations -//------------------------------------------------------------------------------------ -RLAPI void rlMatrixMode(int mode); // Choose the current matrix to be transformed -RLAPI void rlPushMatrix(void); // Push the current matrix to stack -RLAPI void rlPopMatrix(void); // Pop lattest inserted matrix from stack -RLAPI void rlLoadIdentity(void); // Reset current matrix to identity matrix -RLAPI void rlTranslatef(float x, float y, float z); // Multiply the current matrix by a translation matrix -RLAPI void rlRotatef(float angleDeg, float x, float y, float z); // Multiply the current matrix by a rotation matrix -RLAPI void rlScalef(float x, float y, float z); // Multiply the current matrix by a scaling matrix -RLAPI void rlMultMatrixf(float *matf); // Multiply the current matrix by another matrix -RLAPI void rlFrustum(double left, double right, double bottom, double top, double znear, double zfar); -RLAPI void rlOrtho(double left, double right, double bottom, double top, double znear, double zfar); -RLAPI void rlViewport(int x, int y, int width, int height); // Set the viewport area - -//------------------------------------------------------------------------------------ -// Functions Declaration - Vertex level operations -//------------------------------------------------------------------------------------ -RLAPI void rlBegin(int mode); // Initialize drawing mode (how to organize vertex) -RLAPI void rlEnd(void); // Finish vertex providing -RLAPI void rlVertex2i(int x, int y); // Define one vertex (position) - 2 int -RLAPI void rlVertex2f(float x, float y); // Define one vertex (position) - 2 float -RLAPI void rlVertex3f(float x, float y, float z); // Define one vertex (position) - 3 float -RLAPI void rlTexCoord2f(float x, float y); // Define one vertex (texture coordinate) - 2 float -RLAPI void rlNormal3f(float x, float y, float z); // Define one vertex (normal) - 3 float -RLAPI void rlColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a); // Define one vertex (color) - 4 byte -RLAPI void rlColor3f(float x, float y, float z); // Define one vertex (color) - 3 float -RLAPI void rlColor4f(float x, float y, float z, float w); // Define one vertex (color) - 4 float - -//------------------------------------------------------------------------------------ -// Functions Declaration - OpenGL style functions (common to 1.1, 3.3+, ES2) -// NOTE: This functions are used to completely abstract raylib code from OpenGL layer, -// some of them are direct wrappers over OpenGL calls, some others are custom -//------------------------------------------------------------------------------------ - -// Vertex buffers state -RLAPI bool rlEnableVertexArray(unsigned int vaoId); // Enable vertex array (VAO, if supported) -RLAPI void rlDisableVertexArray(void); // Disable vertex array (VAO, if supported) -RLAPI void rlEnableVertexBuffer(unsigned int id); // Enable vertex buffer (VBO) -RLAPI void rlDisableVertexBuffer(void); // Disable vertex buffer (VBO) -RLAPI void rlEnableVertexBufferElement(unsigned int id);// Enable vertex buffer element (VBO element) -RLAPI void rlDisableVertexBufferElement(void); // Disable vertex buffer element (VBO element) -RLAPI void rlEnableVertexAttribute(unsigned int index); // Enable vertex attribute index -RLAPI void rlDisableVertexAttribute(unsigned int index);// Disable vertex attribute index -#if defined(GRAPHICS_API_OPENGL_11) -RLAPI void rlEnableStatePointer(int vertexAttribType, void *buffer); -RLAPI void rlDisableStatePointer(int vertexAttribType); -#endif - -// Textures state -RLAPI void rlActiveTextureSlot(int slot); // Select and active a texture slot -RLAPI void rlEnableTexture(unsigned int id); // Enable texture -RLAPI void rlDisableTexture(void); // Disable texture -RLAPI void rlEnableTextureCubemap(unsigned int id); // Enable texture cubemap -RLAPI void rlDisableTextureCubemap(void); // Disable texture cubemap -RLAPI void rlTextureParameters(unsigned int id, int param, int value); // Set texture parameters (filter, wrap) - -// Shader state -RLAPI void rlEnableShader(unsigned int id); // Enable shader program -RLAPI void rlDisableShader(void); // Disable shader program - -// Framebuffer state -RLAPI void rlEnableFramebuffer(unsigned int id); // Enable render texture (fbo) -RLAPI void rlDisableFramebuffer(void); // Disable render texture (fbo), return to default framebuffer - -// General render state -RLAPI void rlEnableDepthTest(void); // Enable depth test -RLAPI void rlDisableDepthTest(void); // Disable depth test -RLAPI void rlEnableDepthMask(void); // Enable depth write -RLAPI void rlDisableDepthMask(void); // Disable depth write -RLAPI void rlEnableBackfaceCulling(void); // Enable backface culling -RLAPI void rlDisableBackfaceCulling(void); // Disable backface culling -RLAPI void rlEnableScissorTest(void); // Enable scissor test -RLAPI void rlDisableScissorTest(void); // Disable scissor test -RLAPI void rlScissor(int x, int y, int width, int height); // Scissor test -RLAPI void rlEnableWireMode(void); // Enable wire mode -RLAPI void rlDisableWireMode(void); // Disable wire mode -RLAPI void rlSetLineWidth(float width); // Set the line drawing width -RLAPI float rlGetLineWidth(void); // Get the line drawing width -RLAPI void rlEnableSmoothLines(void); // Enable line aliasing -RLAPI void rlDisableSmoothLines(void); // Disable line aliasing -RLAPI void rlEnableStereoRender(void); // Enable stereo rendering -RLAPI void rlDisableStereoRender(void); // Disable stereo rendering -RLAPI bool rlIsStereoRenderEnabled(void); // Check if stereo render is enabled - -RLAPI void rlClearColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a); // Clear color buffer with color -RLAPI void rlClearScreenBuffers(void); // Clear used screen buffers (color and depth) -RLAPI void rlCheckErrors(void); // Check and log OpenGL error codes -RLAPI void rlSetBlendMode(int mode); // Set blending mode -RLAPI void rlSetBlendFactors(int glSrcFactor, int glDstFactor, int glEquation); // Set blending mode factor and equation (using OpenGL factors) - -//------------------------------------------------------------------------------------ -// Functions Declaration - rlgl functionality -//------------------------------------------------------------------------------------ -// rlgl initialization functions -RLAPI void rlglInit(int width, int height); // Initialize rlgl (buffers, shaders, textures, states) -RLAPI void rlglClose(void); // De-inititialize rlgl (buffers, shaders, textures) -RLAPI void rlLoadExtensions(void* loader); // Load OpenGL extensions (loader function pointer required) -RLAPI int rlGetVersion(void); // Returns current OpenGL version -RLAPI int rlGetFramebufferWidth(void); // Get default framebuffer width -RLAPI int rlGetFramebufferHeight(void); // Get default framebuffer height - -RLAPI Shader rlGetShaderDefault(void); // Get default shader -RLAPI Texture2D rlGetTextureDefault(void); // Get default texture - -// Render batch management -// NOTE: rlgl provides a default render batch to behave like OpenGL 1.1 immediate mode -// but this render batch API is exposed in case of custom batches are required -RLAPI RenderBatch rlLoadRenderBatch(int numBuffers, int bufferElements); // Load a render batch system -RLAPI void rlUnloadRenderBatch(RenderBatch batch); // Unload render batch system -RLAPI void rlDrawRenderBatch(RenderBatch *batch); // Draw render batch data (Update->Draw->Reset) -RLAPI void rlSetRenderBatchActive(RenderBatch *batch); // Set the active render batch for rlgl (NULL for default internal) -RLAPI void rlDrawRenderBatchActive(void); // Update and draw internal render batch -RLAPI bool rlCheckRenderBatchLimit(int vCount); // Check internal buffer overflow for a given number of vertex -RLAPI void rlSetTexture(unsigned int id); // Set current texture for render batch and check buffers limits - -//------------------------------------------------------------------------------------------------------------------------ - -// Vertex buffers management -RLAPI unsigned int rlLoadVertexArray(void); // Load vertex array (vao) if supported -RLAPI unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic); // Load a vertex buffer attribute -RLAPI unsigned int rlLoadVertexBufferElement(void *buffer, int size, bool dynamic); // Load a new attributes element buffer -RLAPI void rlUpdateVertexBuffer(int bufferId, void *data, int dataSize, int offset); // Update GPU buffer with new data -RLAPI void rlUnloadVertexArray(unsigned int vaoId); -RLAPI void rlUnloadVertexBuffer(unsigned int vboId); -RLAPI void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, void *pointer); -RLAPI void rlSetVertexAttributeDivisor(unsigned int index, int divisor); -RLAPI void rlSetVertexAttributeDefault(int locIndex, const void *value, int attribType, int count); // Set vertex attribute default value -RLAPI void rlDrawVertexArray(int offset, int count); -RLAPI void rlDrawVertexArrayElements(int offset, int count, void *buffer); -RLAPI void rlDrawVertexArrayInstanced(int offset, int count, int instances); -RLAPI void rlDrawVertexArrayElementsInstanced(int offset, int count, void *buffer, int instances); - -// Textures management -RLAPI unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount); // Load texture in GPU -RLAPI unsigned int rlLoadTextureDepth(int width, int height, bool useRenderBuffer); // Load depth texture/renderbuffer (to be attached to fbo) -RLAPI unsigned int rlLoadTextureCubemap(void *data, int size, int format); // Load texture cubemap -RLAPI void rlUpdateTexture(unsigned int id, int offsetX, int offsetY, int width, int height, int format, const void *data); // Update GPU texture with new data -RLAPI void rlGetGlTextureFormats(int format, unsigned int *glInternalFormat, unsigned int *glFormat, unsigned int *glType); // Get OpenGL internal formats -RLAPI void rlUnloadTexture(unsigned int id); // Unload texture from GPU memory -RLAPI void rlGenerateMipmaps(Texture2D *texture); // Generate mipmap data for selected texture -RLAPI void *rlReadTexturePixels(Texture2D texture); // Read texture pixel data -RLAPI unsigned char *rlReadScreenPixels(int width, int height); // Read screen pixel data (color buffer) - -// Framebuffer management (fbo) -RLAPI unsigned int rlLoadFramebuffer(int width, int height); // Load an empty framebuffer -RLAPI void rlFramebufferAttach(unsigned int fboId, unsigned int texId, int attachType, int texType, int mipLevel); // Attach texture/renderbuffer to a framebuffer -RLAPI bool rlFramebufferComplete(unsigned int id); // Verify framebuffer is complete -RLAPI void rlUnloadFramebuffer(unsigned int id); // Delete framebuffer from GPU - -// Shaders management -RLAPI unsigned int rlLoadShaderCode(const char *vsCode, const char *fsCode); // Load shader from code strings -RLAPI unsigned int rlCompileShader(const char *shaderCode, int type); // Compile custom shader and return shader id (type: GL_VERTEX_SHADER, GL_FRAGMENT_SHADER) -RLAPI unsigned int rlLoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId); // Load custom shader program -RLAPI void rlUnloadShaderProgram(unsigned int id); // Unload shader program -RLAPI int rlGetLocationUniform(unsigned int shaderId, const char *uniformName); // Get shader location uniform -RLAPI int rlGetLocationAttrib(unsigned int shaderId, const char *attribName); // Get shader location attribute -RLAPI void rlSetUniform(int locIndex, const void *value, int uniformType, int count); // Set shader value uniform -RLAPI void rlSetUniformMatrix(int locIndex, Matrix mat); // Set shader value matrix -RLAPI void rlSetUniformSampler(int locIndex, unsigned int textureId); // Set shader value sampler -RLAPI void rlSetShader(Shader shader); // Set shader currently active - -// Matrix state management -RLAPI Matrix rlGetMatrixModelview(void); // Get internal modelview matrix -RLAPI Matrix rlGetMatrixProjection(void); // Get internal projection matrix -RLAPI Matrix rlGetMatrixTransform(void); // Get internal accumulated transform matrix -RLAPI Matrix rlGetMatrixProjectionStereo(int eye); // Get internal projection matrix for stereo render (selected eye) -RLAPI Matrix rlGetMatrixViewOffsetStereo(int eye); // Get internal view offset matrix for stereo render (selected eye) -RLAPI void rlSetMatrixProjection(Matrix proj); // Set a custom projection matrix (replaces internal projection matrix) -RLAPI void rlSetMatrixModelview(Matrix view); // Set a custom modelview matrix (replaces internal modelview matrix) -RLAPI void rlSetMatrixProjectionStereo(Matrix right, Matrix left); // Set eyes projection matrices for stereo rendering -RLAPI void rlSetMatrixViewOffsetStereo(Matrix right, Matrix left); // Set eyes view offsets matrices for stereo rendering - -// Quick and dirty cube/quad buffers load->draw->unload -RLAPI void rlLoadDrawCube(void); // Load and draw a cube -RLAPI void rlLoadDrawQuad(void); // Load and draw a quad -#if defined(__cplusplus) -} -#endif - -#endif // RLGL_H - -/*********************************************************************************** -* -* RLGL IMPLEMENTATION -* -************************************************************************************/ - -#if defined(RLGL_IMPLEMENTATION) - -#if !defined(RLGL_STANDALONE) - // Check if config flags have been externally provided on compilation line - #if !defined(EXTERNAL_CONFIG_FLAGS) - #include "config.h" // Defines module configuration flags - #endif - #include "raymath.h" // Required for: Vector3 and Matrix functions -#endif - -#include <stdlib.h> // Required for: malloc(), free() -#include <string.h> // Required for: strcmp(), strlen() [Used in rlglInit(), on extensions loading] - -#if defined(GRAPHICS_API_OPENGL_11) - #if defined(__APPLE__) - #include <OpenGL/gl.h> // OpenGL 1.1 library for OSX - #include <OpenGL/glext.h> - #else - // APIENTRY for OpenGL function pointer declarations is required - #ifndef APIENTRY - #if defined(_WIN32) - #define APIENTRY __stdcall - #else - #define APIENTRY - #endif - #endif - // WINGDIAPI definition. Some Windows OpenGL headers need it - #if !defined(WINGDIAPI) && defined(_WIN32) - #define WINGDIAPI __declspec(dllimport) - #endif - - #include <GL/gl.h> // OpenGL 1.1 library - #endif -#endif - -#if defined(GRAPHICS_API_OPENGL_33) - #if defined(__APPLE__) - #include <OpenGL/gl3.h> // OpenGL 3 library for OSX - #include <OpenGL/gl3ext.h> // OpenGL 3 extensions library for OSX - #else - #define GLAD_REALLOC RL_REALLOC - #define GLAD_FREE RL_FREE - - #define GLAD_IMPLEMENTATION - #if defined(RLGL_STANDALONE) - #include "glad.h" // GLAD extensions loading library, includes OpenGL headers - #else - #include "external/glad.h" // GLAD extensions loading library, includes OpenGL headers - #endif - #endif -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - #define GL_GLEXT_PROTOTYPES - #include <EGL/egl.h> // EGL library - #include <GLES2/gl2.h> // OpenGL ES 2.0 library - #include <GLES2/gl2ext.h> // OpenGL ES 2.0 extensions library - - // It seems OpenGL ES 2.0 instancing entry points are not defined on Raspberry Pi - // provided headers (despite being defined in official Khronos GLES2 headers) - #if defined(PLATFORM_RPI) || defined(PLATFORM_DRM) - typedef void (GL_APIENTRYP PFNGLDRAWARRAYSINSTANCEDEXTPROC) (GLenum mode, GLint start, GLsizei count, GLsizei primcount); - typedef void (GL_APIENTRYP PFNGLDRAWELEMENTSINSTANCEDEXTPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount); - typedef void (GL_APIENTRYP PFNGLVERTEXATTRIBDIVISOREXTPROC) (GLuint index, GLuint divisor); - #endif -#endif - -//---------------------------------------------------------------------------------- -// Defines and Macros -//---------------------------------------------------------------------------------- -#ifndef GL_SHADING_LANGUAGE_VERSION - #define GL_SHADING_LANGUAGE_VERSION 0x8B8C -#endif - -#ifndef GL_COMPRESSED_RGB_S3TC_DXT1_EXT - #define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT1_EXT - #define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT3_EXT - #define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2 -#endif -#ifndef GL_COMPRESSED_RGBA_S3TC_DXT5_EXT - #define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3 -#endif -#ifndef GL_ETC1_RGB8_OES - #define GL_ETC1_RGB8_OES 0x8D64 -#endif -#ifndef GL_COMPRESSED_RGB8_ETC2 - #define GL_COMPRESSED_RGB8_ETC2 0x9274 -#endif -#ifndef GL_COMPRESSED_RGBA8_ETC2_EAC - #define GL_COMPRESSED_RGBA8_ETC2_EAC 0x9278 -#endif -#ifndef GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG - #define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG 0x8C00 -#endif -#ifndef GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG - #define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG 0x8C02 -#endif -#ifndef GL_COMPRESSED_RGBA_ASTC_4x4_KHR - #define GL_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93b0 -#endif -#ifndef GL_COMPRESSED_RGBA_ASTC_8x8_KHR - #define GL_COMPRESSED_RGBA_ASTC_8x8_KHR 0x93b7 -#endif - -#ifndef GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT - #define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF -#endif -#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT - #define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE -#endif - -#if defined(GRAPHICS_API_OPENGL_11) - #define GL_UNSIGNED_SHORT_5_6_5 0x8363 - #define GL_UNSIGNED_SHORT_5_5_5_1 0x8034 - #define GL_UNSIGNED_SHORT_4_4_4_4 0x8033 -#endif - -#if defined(GRAPHICS_API_OPENGL_21) - #define GL_LUMINANCE 0x1909 - #define GL_LUMINANCE_ALPHA 0x190A -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - #define glClearDepth glClearDepthf - #define GL_READ_FRAMEBUFFER GL_FRAMEBUFFER - #define GL_DRAW_FRAMEBUFFER GL_FRAMEBUFFER -#endif - -// Default shader vertex attribute names to set location points -#ifndef DEFAULT_SHADER_ATTRIB_NAME_POSITION - #define DEFAULT_SHADER_ATTRIB_NAME_POSITION "vertexPosition" // Binded by default to shader location: 0 -#endif -#ifndef DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD - #define DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD "vertexTexCoord" // Binded by default to shader location: 1 -#endif -#ifndef DEFAULT_SHADER_ATTRIB_NAME_NORMAL - #define DEFAULT_SHADER_ATTRIB_NAME_NORMAL "vertexNormal" // Binded by default to shader location: 2 -#endif -#ifndef DEFAULT_SHADER_ATTRIB_NAME_COLOR - #define DEFAULT_SHADER_ATTRIB_NAME_COLOR "vertexColor" // Binded by default to shader location: 3 -#endif -#ifndef DEFAULT_SHADER_ATTRIB_NAME_TANGENT - #define DEFAULT_SHADER_ATTRIB_NAME_TANGENT "vertexTangent" // Binded by default to shader location: 4 -#endif -#ifndef DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2 - #define DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2 "vertexTexCoord2" // Binded by default to shader location: 5 -#endif - -//---------------------------------------------------------------------------------- -// Types and Structures Definition -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -typedef struct rlglData { - RenderBatch *currentBatch; // Current render batch - RenderBatch defaultBatch; // Default internal render batch - - struct { - int currentMatrixMode; // Current matrix mode - Matrix *currentMatrix; // Current matrix pointer - Matrix modelview; // Default modelview matrix - Matrix projection; // Default projection matrix - Matrix transform; // Transform matrix to be used with rlTranslate, rlRotate, rlScale - bool transformRequired; // Require transform matrix application to current draw-call vertex (if required) - Matrix stack[MAX_MATRIX_STACK_SIZE];// Matrix stack for push/pop - int stackCounter; // Matrix stack counter - - unsigned int defaultTextureId; // Default texture used on shapes/poly drawing (required by shader) - unsigned int activeTextureId[MAX_BATCH_ACTIVE_TEXTURES]; // Active texture ids to be enabled on batch drawing (0 active by default) - unsigned int defaultVShaderId; // Default vertex shader id (used by default shader program) - unsigned int defaultFShaderId; // Default fragment shader Id (used by default shader program) - Shader defaultShader; // Basic shader, support vertex color and diffuse texture - Shader currentShader; // Shader to be used on rendering (by default, defaultShader) - - bool stereoRender; // Stereo rendering flag - Matrix projectionStereo[2]; // VR stereo rendering eyes projection matrices - Matrix viewOffsetStereo[2]; // VR stereo rendering eyes view offset matrices - - int currentBlendMode; // Blending mode active - int glBlendSrcFactor; // Blending source factor - int glBlendDstFactor; // Blending destination factor - int glBlendEquation; // Blending equation - - int framebufferWidth; // Default framebuffer width - int framebufferHeight; // Default framebuffer height - - } State; // Renderer state - struct { - bool vao; // VAO support (OpenGL ES2 could not support VAO extension) (GL_ARB_vertex_array_object) - bool instancing; // Instancing supported (GL_ANGLE_instanced_arrays, GL_EXT_draw_instanced + GL_EXT_instanced_arrays) - bool texNPOT; // NPOT textures full support (GL_ARB_texture_non_power_of_two, GL_OES_texture_npot) - bool texDepth; // Depth textures supported (GL_ARB_depth_texture, GL_WEBGL_depth_texture, GL_OES_depth_texture) - bool texFloat32; // float textures support (32 bit per channel) (GL_OES_texture_float) - bool texCompDXT; // DDS texture compression support (GL_EXT_texture_compression_s3tc, GL_WEBGL_compressed_texture_s3tc, GL_WEBKIT_WEBGL_compressed_texture_s3tc) - bool texCompETC1; // ETC1 texture compression support (GL_OES_compressed_ETC1_RGB8_texture, GL_WEBGL_compressed_texture_etc1) - bool texCompETC2; // ETC2/EAC texture compression support (GL_ARB_ES3_compatibility) - bool texCompPVRT; // PVR texture compression support (GL_IMG_texture_compression_pvrtc) - bool texCompASTC; // ASTC texture compression support (GL_KHR_texture_compression_astc_hdr, GL_KHR_texture_compression_astc_ldr) - bool texMirrorClamp; // Clamp mirror wrap mode supported (GL_EXT_texture_mirror_clamp) - bool texAnisoFilter; // Anisotropic texture filtering support (GL_EXT_texture_filter_anisotropic) - - float maxAnisotropyLevel; // Maximum anisotropy level supported (minimum is 2.0f) - int maxDepthBits; // Maximum bits for depth component - - } ExtSupported; // Extensions supported flags -} rlglData; -#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2 - -//---------------------------------------------------------------------------------- -// Global Variables Definition -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -static rlglData RLGL = { 0 }; -#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2 - -#if defined(GRAPHICS_API_OPENGL_ES2) -// NOTE: VAO functionality is exposed through extensions (OES) -static PFNGLGENVERTEXARRAYSOESPROC glGenVertexArrays = NULL; -static PFNGLBINDVERTEXARRAYOESPROC glBindVertexArray = NULL; -static PFNGLDELETEVERTEXARRAYSOESPROC glDeleteVertexArrays = NULL; - -// NOTE: Instancing functionality could also be available through extension -static PFNGLDRAWARRAYSINSTANCEDEXTPROC glDrawArraysInstanced = NULL; -static PFNGLDRAWELEMENTSINSTANCEDEXTPROC glDrawElementsInstanced = NULL; -static PFNGLVERTEXATTRIBDIVISOREXTPROC glVertexAttribDivisor = NULL; -#endif - -//---------------------------------------------------------------------------------- -// Module specific Functions Declaration -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -static void rlLoadShaderDefault(void); // Load default shader (RLGL.State.defaultShader) -static void rlUnloadShaderDefault(void); // Unload default shader (RLGL.State.defaultShader) -#if defined(SUPPORT_GL_DETAILS_INFO) -static char *rlGetCompressedFormatName(int format); // Get compressed format official GL identifier name -#endif // SUPPORT_GL_DETAILS_INFO -#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2 -#if defined(GRAPHICS_API_OPENGL_11) -static int rlGenerateMipmapsData(unsigned char *data, int baseWidth, int baseHeight); // Generate mipmaps data on CPU side -static Color *rlGenNextMipmapData(Color *srcData, int srcWidth, int srcHeight); // Generate next mipmap level on CPU side -#endif -static int rlGetPixelDataSize(int width, int height, int format); // Get pixel data size in bytes (image or texture) - -//---------------------------------------------------------------------------------- -// Module Functions Definition - Matrix operations -//---------------------------------------------------------------------------------- - -#if defined(GRAPHICS_API_OPENGL_11) -// Fallback to OpenGL 1.1 function calls -//--------------------------------------- -void rlMatrixMode(int mode) -{ - switch (mode) - { - case RL_PROJECTION: glMatrixMode(GL_PROJECTION); break; - case RL_MODELVIEW: glMatrixMode(GL_MODELVIEW); break; - case RL_TEXTURE: glMatrixMode(GL_TEXTURE); break; - default: break; - } -} - -void rlFrustum(double left, double right, double bottom, double top, double znear, double zfar) -{ - glFrustum(left, right, bottom, top, znear, zfar); -} - -void rlOrtho(double left, double right, double bottom, double top, double znear, double zfar) -{ - glOrtho(left, right, bottom, top, znear, zfar); -} - -void rlPushMatrix(void) { glPushMatrix(); } -void rlPopMatrix(void) { glPopMatrix(); } -void rlLoadIdentity(void) { glLoadIdentity(); } -void rlTranslatef(float x, float y, float z) { glTranslatef(x, y, z); } -void rlRotatef(float angleDeg, float x, float y, float z) { glRotatef(angleDeg, x, y, z); } -void rlScalef(float x, float y, float z) { glScalef(x, y, z); } -void rlMultMatrixf(float *matf) { glMultMatrixf(matf); } -#endif -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -// Choose the current matrix to be transformed -void rlMatrixMode(int mode) -{ - if (mode == RL_PROJECTION) RLGL.State.currentMatrix = &RLGL.State.projection; - else if (mode == RL_MODELVIEW) RLGL.State.currentMatrix = &RLGL.State.modelview; - //else if (mode == RL_TEXTURE) // Not supported - - RLGL.State.currentMatrixMode = mode; -} - -// Push the current matrix into RLGL.State.stack -void rlPushMatrix(void) -{ - if (RLGL.State.stackCounter >= MAX_MATRIX_STACK_SIZE) TRACELOG(LOG_ERROR, "RLGL: Matrix stack overflow (MAX_MATRIX_STACK_SIZE)"); - - if (RLGL.State.currentMatrixMode == RL_MODELVIEW) - { - RLGL.State.transformRequired = true; - RLGL.State.currentMatrix = &RLGL.State.transform; - } - - RLGL.State.stack[RLGL.State.stackCounter] = *RLGL.State.currentMatrix; - RLGL.State.stackCounter++; -} - -// Pop lattest inserted matrix from RLGL.State.stack -void rlPopMatrix(void) -{ - if (RLGL.State.stackCounter > 0) - { - Matrix mat = RLGL.State.stack[RLGL.State.stackCounter - 1]; - *RLGL.State.currentMatrix = mat; - RLGL.State.stackCounter--; - } - - if ((RLGL.State.stackCounter == 0) && (RLGL.State.currentMatrixMode == RL_MODELVIEW)) - { - RLGL.State.currentMatrix = &RLGL.State.modelview; - RLGL.State.transformRequired = false; - } -} - -// Reset current matrix to identity matrix -void rlLoadIdentity(void) -{ - *RLGL.State.currentMatrix = MatrixIdentity(); -} - -// Multiply the current matrix by a translation matrix -void rlTranslatef(float x, float y, float z) -{ - Matrix matTranslation = MatrixTranslate(x, y, z); - - // NOTE: We transpose matrix with multiplication order - *RLGL.State.currentMatrix = MatrixMultiply(matTranslation, *RLGL.State.currentMatrix); -} - -// Multiply the current matrix by a rotation matrix -void rlRotatef(float angleDeg, float x, float y, float z) -{ - Matrix matRotation = MatrixIdentity(); - - Vector3 axis = (Vector3){ x, y, z }; - matRotation = MatrixRotate(Vector3Normalize(axis), angleDeg*DEG2RAD); - - // NOTE: We transpose matrix with multiplication order - *RLGL.State.currentMatrix = MatrixMultiply(matRotation, *RLGL.State.currentMatrix); -} - -// Multiply the current matrix by a scaling matrix -void rlScalef(float x, float y, float z) -{ - Matrix matScale = MatrixScale(x, y, z); - - // NOTE: We transpose matrix with multiplication order - *RLGL.State.currentMatrix = MatrixMultiply(matScale, *RLGL.State.currentMatrix); -} - -// Multiply the current matrix by another matrix -void rlMultMatrixf(float *matf) -{ - // Matrix creation from array - Matrix mat = { matf[0], matf[4], matf[8], matf[12], - matf[1], matf[5], matf[9], matf[13], - matf[2], matf[6], matf[10], matf[14], - matf[3], matf[7], matf[11], matf[15] }; - - *RLGL.State.currentMatrix = MatrixMultiply(*RLGL.State.currentMatrix, mat); -} - -// Multiply the current matrix by a perspective matrix generated by parameters -void rlFrustum(double left, double right, double bottom, double top, double znear, double zfar) -{ - Matrix matPerps = MatrixFrustum(left, right, bottom, top, znear, zfar); - - *RLGL.State.currentMatrix = MatrixMultiply(*RLGL.State.currentMatrix, matPerps); -} - -// Multiply the current matrix by an orthographic matrix generated by parameters -void rlOrtho(double left, double right, double bottom, double top, double znear, double zfar) -{ - // NOTE: If left-right and top-botton values are equal it could create - // a division by zero on MatrixOrtho(), response to it is platform/compiler dependant - Matrix matOrtho = MatrixOrtho(left, right, bottom, top, znear, zfar); - - *RLGL.State.currentMatrix = MatrixMultiply(*RLGL.State.currentMatrix, matOrtho); -} -#endif - -// Set the viewport area (transformation from normalized device coordinates to window coordinates) -void rlViewport(int x, int y, int width, int height) -{ - glViewport(x, y, width, height); -} - -//---------------------------------------------------------------------------------- -// Module Functions Definition - Vertex level operations -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_11) -// Fallback to OpenGL 1.1 function calls -//--------------------------------------- -void rlBegin(int mode) -{ - switch (mode) - { - case RL_LINES: glBegin(GL_LINES); break; - case RL_TRIANGLES: glBegin(GL_TRIANGLES); break; - case RL_QUADS: glBegin(GL_QUADS); break; - default: break; - } -} - -void rlEnd() { glEnd(); } -void rlVertex2i(int x, int y) { glVertex2i(x, y); } -void rlVertex2f(float x, float y) { glVertex2f(x, y); } -void rlVertex3f(float x, float y, float z) { glVertex3f(x, y, z); } -void rlTexCoord2f(float x, float y) { glTexCoord2f(x, y); } -void rlNormal3f(float x, float y, float z) { glNormal3f(x, y, z); } -void rlColor4ub(unsigned char r, unsigned char g, unsigned char b, unsigned char a) { glColor4ub(r, g, b, a); } -void rlColor3f(float x, float y, float z) { glColor3f(x, y, z); } -void rlColor4f(float x, float y, float z, float w) { glColor4f(x, y, z, w); } -#endif -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -// Initialize drawing mode (how to organize vertex) -void rlBegin(int mode) -{ - // Draw mode can be RL_LINES, RL_TRIANGLES and RL_QUADS - // NOTE: In all three cases, vertex are accumulated over default internal vertex buffer - if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].mode != mode) - { - if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount > 0) - { - // Make sure current RLGL.currentBatch->draws[i].vertexCount is aligned a multiple of 4, - // that way, following QUADS drawing will keep aligned with index processing - // It implies adding some extra alignment vertex at the end of the draw, - // those vertex are not processed but they are considered as an additional offset - // for the next set of vertex to be drawn - if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].mode == RL_LINES) RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment = ((RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount < 4)? RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount : RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount%4); - else if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].mode == RL_TRIANGLES) RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment = ((RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount < 4)? 1 : (4 - (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount%4))); - else RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment = 0; - - if (!rlCheckRenderBatchLimit(RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment)) - { - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter += RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter += RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter += RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment; - - RLGL.currentBatch->drawsCounter++; - } - } - - if (RLGL.currentBatch->drawsCounter >= DEFAULT_BATCH_DRAWCALLS) rlDrawRenderBatch(RLGL.currentBatch); - - RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].mode = mode; - RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount = 0; - RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].textureId = RLGL.State.defaultTextureId; - } -} - -// Finish vertex providing -void rlEnd(void) -{ - // Make sure vertexCount is the same for vertices, texcoords, colors and normals - // NOTE: In OpenGL 1.1, one glColor call can be made for all the subsequent glVertex calls - - // Make sure colors count match vertex count - if (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter != RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter) - { - int addColors = RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter; - - for (int i = 0; i < addColors; i++) - { - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter] = RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter - 4]; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter + 1] = RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter - 3]; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter + 2] = RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter - 2]; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter + 3] = RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter - 1]; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter++; - } - } - - // Make sure texcoords count match vertex count - if (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter != RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter) - { - int addTexCoords = RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter; - - for (int i = 0; i < addTexCoords; i++) - { - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].texcoords[2*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter] = 0.0f; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].texcoords[2*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter + 1] = 0.0f; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter++; - } - } - - // TODO: Make sure normals count match vertex count... if normals support is added in a future... :P - - // NOTE: Depth increment is dependant on rlOrtho(): z-near and z-far values, - // as well as depth buffer bit-depth (16bit or 24bit or 32bit) - // Correct increment formula would be: depthInc = (zfar - znear)/pow(2, bits) - RLGL.currentBatch->currentDepth += (1.0f/20000.0f); - - // Verify internal buffers limits - // NOTE: This check is combined with usage of rlCheckRenderBatchLimit() - if ((RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter) >= - (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].elementsCount*4 - 4)) - { - // WARNING: If we are between rlPushMatrix() and rlPopMatrix() and we need to force a rlDrawRenderBatch(), - // we need to call rlPopMatrix() before to recover *RLGL.State.currentMatrix (RLGL.State.modelview) for the next forced draw call! - // If we have multiple matrix pushed, it will require "RLGL.State.stackCounter" pops before launching the draw - for (int i = RLGL.State.stackCounter; i >= 0; i--) rlPopMatrix(); - rlDrawRenderBatch(RLGL.currentBatch); - } -} - -// Define one vertex (position) -// NOTE: Vertex position data is the basic information required for drawing -void rlVertex3f(float x, float y, float z) -{ - Vector3 vec = { x, y, z }; - - // Transform provided vector if required - if (RLGL.State.transformRequired) vec = Vector3Transform(vec, RLGL.State.transform); - - // Verify that current vertex buffer elements limit has not been reached - if (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter < (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].elementsCount*4)) - { - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vertices[3*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter] = vec.x; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vertices[3*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter + 1] = vec.y; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vertices[3*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter + 2] = vec.z; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter++; - - RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount++; - } - else TRACELOG(LOG_ERROR, "RLGL: Batch elements overflow"); -} - -// Define one vertex (position) -void rlVertex2f(float x, float y) -{ - rlVertex3f(x, y, RLGL.currentBatch->currentDepth); -} - -// Define one vertex (position) -void rlVertex2i(int x, int y) -{ - rlVertex3f((float)x, (float)y, RLGL.currentBatch->currentDepth); -} - -// Define one vertex (texture coordinate) -// NOTE: Texture coordinates are limited to QUADS only -void rlTexCoord2f(float x, float y) -{ - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].texcoords[2*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter] = x; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].texcoords[2*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter + 1] = y; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter++; -} - -// Define one vertex (normal) -// NOTE: Normals limited to TRIANGLES only? -void rlNormal3f(float x, float y, float z) -{ - // TODO: Normals usage... -} - -// Define one vertex (color) -void rlColor4ub(unsigned char x, unsigned char y, unsigned char z, unsigned char w) -{ - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter] = x; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter + 1] = y; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter + 2] = z; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].colors[4*RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter + 3] = w; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter++; -} - -// Define one vertex (color) -void rlColor4f(float r, float g, float b, float a) -{ - rlColor4ub((unsigned char)(r*255), (unsigned char)(g*255), (unsigned char)(b*255), (unsigned char)(a*255)); -} - -// Define one vertex (color) -void rlColor3f(float x, float y, float z) -{ - rlColor4ub((unsigned char)(x*255), (unsigned char)(y*255), (unsigned char)(z*255), 255); -} - -#endif - -//-------------------------------------------------------------------------------------- -// Module Functions Definition - OpenGL style functions (common to 1.1, 3.3+, ES2) -//-------------------------------------------------------------------------------------- - -// Set current texture to use -void rlSetTexture(unsigned int id) -{ - if (id == 0) - { -#if defined(GRAPHICS_API_OPENGL_11) - rlDisableTexture(); -#else - // NOTE: If quads batch limit is reached, we force a draw call and next batch starts - if (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter >= - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].elementsCount*4) - { - rlDrawRenderBatch(RLGL.currentBatch); - } -#endif - } - else - { -#if defined(GRAPHICS_API_OPENGL_11) - rlEnableTexture(id); -#else - if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].textureId != id) - { - if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount > 0) - { - // Make sure current RLGL.currentBatch->draws[i].vertexCount is aligned a multiple of 4, - // that way, following QUADS drawing will keep aligned with index processing - // It implies adding some extra alignment vertex at the end of the draw, - // those vertex are not processed but they are considered as an additional offset - // for the next set of vertex to be drawn - if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].mode == RL_LINES) RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment = ((RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount < 4)? RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount : RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount%4); - else if (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].mode == RL_TRIANGLES) RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment = ((RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount < 4)? 1 : (4 - (RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount%4))); - else RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment = 0; - - if (!rlCheckRenderBatchLimit(RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment)) - { - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter += RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].cCounter += RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment; - RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].tcCounter += RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexAlignment; - - RLGL.currentBatch->drawsCounter++; - } - } - - if (RLGL.currentBatch->drawsCounter >= DEFAULT_BATCH_DRAWCALLS) rlDrawRenderBatch(RLGL.currentBatch); - - RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].textureId = id; - RLGL.currentBatch->draws[RLGL.currentBatch->drawsCounter - 1].vertexCount = 0; - } -#endif - } -} - -// Select and active a texture slot -void rlActiveTextureSlot(int slot) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glActiveTexture(GL_TEXTURE0 + slot); -#endif -} - -// Enable texture -void rlEnableTexture(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_11) - glEnable(GL_TEXTURE_2D); -#endif - glBindTexture(GL_TEXTURE_2D, id); -} - -// Disable texture -void rlDisableTexture(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) - glDisable(GL_TEXTURE_2D); -#endif - glBindTexture(GL_TEXTURE_2D, 0); -} - -// Enable texture cubemap -void rlEnableTextureCubemap(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glEnable(GL_TEXTURE_CUBE_MAP); // Core in OpenGL 1.4 - glBindTexture(GL_TEXTURE_CUBE_MAP, id); -#endif -} - -// Disable texture cubemap -void rlDisableTextureCubemap(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glDisable(GL_TEXTURE_CUBE_MAP); - glBindTexture(GL_TEXTURE_CUBE_MAP, 0); -#endif -} - -// Set texture parameters (wrap mode/filter mode) -void rlTextureParameters(unsigned int id, int param, int value) -{ - glBindTexture(GL_TEXTURE_2D, id); - - switch (param) - { - case RL_TEXTURE_WRAP_S: - case RL_TEXTURE_WRAP_T: - { - if (value == RL_TEXTURE_WRAP_MIRROR_CLAMP) - { -#if !defined(GRAPHICS_API_OPENGL_11) - if (RLGL.ExtSupported.texMirrorClamp) glTexParameteri(GL_TEXTURE_2D, param, value); - else TRACELOG(LOG_WARNING, "GL: Clamp mirror wrap mode not supported (GL_MIRROR_CLAMP_EXT)"); -#endif - } - else glTexParameteri(GL_TEXTURE_2D, param, value); - - } break; - case RL_TEXTURE_MAG_FILTER: - case RL_TEXTURE_MIN_FILTER: glTexParameteri(GL_TEXTURE_2D, param, value); break; - case RL_TEXTURE_FILTER_ANISOTROPIC: - { -#if !defined(GRAPHICS_API_OPENGL_11) - if (value <= RLGL.ExtSupported.maxAnisotropyLevel) glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value); - else if (RLGL.ExtSupported.maxAnisotropyLevel > 0.0f) - { - TRACELOG(LOG_WARNING, "GL: Maximum anisotropic filter level supported is %iX", id, RLGL.ExtSupported.maxAnisotropyLevel); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, (float)value); - } - else TRACELOG(LOG_WARNING, "GL: Anisotropic filtering not supported"); -#endif - } break; - default: break; - } - - glBindTexture(GL_TEXTURE_2D, 0); -} - -// Enable shader program -void rlEnableShader(unsigned int id) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) - glUseProgram(id); -#endif -} - -// Disable shader program -void rlDisableShader(void) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) - glUseProgram(0); -#endif -} - -// Enable rendering to texture (fbo) -void rlEnableFramebuffer(unsigned int id) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) && defined(SUPPORT_RENDER_TEXTURES_HINT) - glBindFramebuffer(GL_FRAMEBUFFER, id); -#endif -} - -// Disable rendering to texture -void rlDisableFramebuffer(void) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) && defined(SUPPORT_RENDER_TEXTURES_HINT) - glBindFramebuffer(GL_FRAMEBUFFER, 0); -#endif -} - -// Enable depth test -void rlEnableDepthTest(void) { glEnable(GL_DEPTH_TEST); } - -// Disable depth test -void rlDisableDepthTest(void) { glDisable(GL_DEPTH_TEST); } - -// Enable depth write -void rlEnableDepthMask(void) { glDepthMask(GL_TRUE); } - -// Disable depth write -void rlDisableDepthMask(void) { glDepthMask(GL_FALSE); } - -// Enable backface culling -void rlEnableBackfaceCulling(void) { glEnable(GL_CULL_FACE); } - -// Disable backface culling -void rlDisableBackfaceCulling(void) { glDisable(GL_CULL_FACE); } - -// Enable scissor test -void rlEnableScissorTest(void) { glEnable(GL_SCISSOR_TEST); } - -// Disable scissor test -void rlDisableScissorTest(void) { glDisable(GL_SCISSOR_TEST); } - -// Scissor test -void rlScissor(int x, int y, int width, int height) { glScissor(x, y, width, height); } - -// Enable wire mode -void rlEnableWireMode(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - // NOTE: glPolygonMode() not available on OpenGL ES - glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); -#endif -} - -// Disable wire mode -void rlDisableWireMode(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - // NOTE: glPolygonMode() not available on OpenGL ES - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); -#endif -} -// Set the line drawing width -void rlSetLineWidth(float width) -{ - glLineWidth(width); -} - -// Get the line drawing width -float rlGetLineWidth(void) -{ - float width = 0; - glGetFloatv(GL_LINE_WIDTH, &width); - return width; -} - -// Enable line aliasing -void rlEnableSmoothLines(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_11) - glEnable(GL_LINE_SMOOTH); -#endif -} - -// Disable line aliasing -void rlDisableSmoothLines(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_11) - glDisable(GL_LINE_SMOOTH); -#endif -} - -// Enable stereo rendering -void rlEnableStereoRender(void) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) - RLGL.State.stereoRender = true; -#endif -} - -// Disable stereo rendering -void rlDisableStereoRender(void) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) - RLGL.State.stereoRender = false; -#endif -} - -// Check if stereo render is enabled -bool rlIsStereoRenderEnabled(void) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) - return RLGL.State.stereoRender; -#else - return false; -#endif -} - -// Clear color buffer with color -void rlClearColor(unsigned char r, unsigned char g, unsigned char b, unsigned char a) -{ - // Color values clamp to 0.0f(0) and 1.0f(255) - float cr = (float)r/255; - float cg = (float)g/255; - float cb = (float)b/255; - float ca = (float)a/255; - - glClearColor(cr, cg, cb, ca); -} - -// Clear used screen buffers (color and depth) -void rlClearScreenBuffers(void) -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear used buffers: Color and Depth (Depth is used for 3D) - //glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); // Stencil buffer not used... -} - -// Check and log OpenGL error codes -void rlCheckErrors() -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - int check = 1; - while (check) - { - const GLenum err = glGetError(); - switch (err) - { - case GL_NO_ERROR: check = 0; break; - case 0x0500: TRACELOG(LOG_WARNING, "GL: Error detected: GL_INVALID_ENUM"); break; - case 0x0501: TRACELOG(LOG_WARNING, "GL: Error detected: GL_INVALID_VALUE"); break; - case 0x0502: TRACELOG(LOG_WARNING, "GL: Error detected: GL_INVALID_OPERATION"); break; - case 0x0503: TRACELOG(LOG_WARNING, "GL: Error detected: GL_STACK_OVERFLOW"); break; - case 0x0504: TRACELOG(LOG_WARNING, "GL: Error detected: GL_STACK_UNDERFLOW"); break; - case 0x0505: TRACELOG(LOG_WARNING, "GL: Error detected: GL_OUT_OF_MEMORY"); break; - case 0x0506: TRACELOG(LOG_WARNING, "GL: Error detected: GL_INVALID_FRAMEBUFFER_OPERATION"); break; - default: TRACELOG(LOG_WARNING, "GL: Error detected: Unknown error code: %x", err); break; - } - } -#endif -} - -// Set blend mode -void rlSetBlendMode(int mode) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.State.currentBlendMode != mode) - { - rlDrawRenderBatch(RLGL.currentBatch); - - switch (mode) - { - case BLEND_ALPHA: glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glBlendEquation(GL_FUNC_ADD); break; - case BLEND_ADDITIVE: glBlendFunc(GL_SRC_ALPHA, GL_ONE); glBlendEquation(GL_FUNC_ADD); break; - case BLEND_MULTIPLIED: glBlendFunc(GL_DST_COLOR, GL_ONE_MINUS_SRC_ALPHA); glBlendEquation(GL_FUNC_ADD); break; - case BLEND_ADD_COLORS: glBlendFunc(GL_ONE, GL_ONE); glBlendEquation(GL_FUNC_ADD); break; - case BLEND_SUBTRACT_COLORS: glBlendFunc(GL_ONE, GL_ONE); glBlendEquation(GL_FUNC_SUBTRACT); break; - case BLEND_CUSTOM: glBlendFunc(RLGL.State.glBlendSrcFactor, RLGL.State.glBlendDstFactor); glBlendEquation(RLGL.State.glBlendEquation); break; - default: break; - } - - RLGL.State.currentBlendMode = mode; - } -#endif -} - -// Set blending mode factor and equation -void rlSetBlendFactors(int glSrcFactor, int glDstFactor, int glEquation) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - RLGL.State.glBlendSrcFactor = glSrcFactor; - RLGL.State.glBlendDstFactor = glDstFactor; - RLGL.State.glBlendEquation = glEquation; -#endif -} - -//---------------------------------------------------------------------------------- -// Module Functions Definition - rlgl functionality -//---------------------------------------------------------------------------------- - -// Initialize rlgl: OpenGL extensions, default buffers/shaders/textures, OpenGL states -void rlglInit(int width, int height) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Init default white texture - unsigned char pixels[4] = { 255, 255, 255, 255 }; // 1 pixel RGBA (4 bytes) - RLGL.State.defaultTextureId = rlLoadTexture(pixels, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, 1); - - if (RLGL.State.defaultTextureId != 0) TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Default texture loaded successfully", RLGL.State.defaultTextureId); - else TRACELOG(LOG_WARNING, "TEXTURE: Failed to load default texture"); - - // Init default Shader (customized for GL 3.3 and ES2) - rlLoadShaderDefault(); // RLGL.State.defaultShader - RLGL.State.currentShader = RLGL.State.defaultShader; - - // Init default vertex arrays buffers - RLGL.defaultBatch = rlLoadRenderBatch(DEFAULT_BATCH_BUFFERS, DEFAULT_BATCH_BUFFER_ELEMENTS); - RLGL.currentBatch = &RLGL.defaultBatch; - - // Init stack matrices (emulating OpenGL 1.1) - for (int i = 0; i < MAX_MATRIX_STACK_SIZE; i++) RLGL.State.stack[i] = MatrixIdentity(); - - // Init internal matrices - RLGL.State.transform = MatrixIdentity(); - RLGL.State.projection = MatrixIdentity(); - RLGL.State.modelview = MatrixIdentity(); - RLGL.State.currentMatrix = &RLGL.State.modelview; -#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2 - - // Initialize OpenGL default states - //---------------------------------------------------------- - // Init state: Depth test - glDepthFunc(GL_LEQUAL); // Type of depth testing to apply - glDisable(GL_DEPTH_TEST); // Disable depth testing for 2D (only used for 3D) - - // Init state: Blending mode - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Color blending function (how colors are mixed) - glEnable(GL_BLEND); // Enable color blending (required to work with transparencies) - - // Init state: Culling - // NOTE: All shapes/models triangles are drawn CCW - glCullFace(GL_BACK); // Cull the back face (default) - glFrontFace(GL_CCW); // Front face are defined counter clockwise (default) - glEnable(GL_CULL_FACE); // Enable backface culling - - // Init state: Cubemap seamless -#if defined(GRAPHICS_API_OPENGL_33) - glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); // Seamless cubemaps (not supported on OpenGL ES 2.0) -#endif - -#if defined(GRAPHICS_API_OPENGL_11) - // Init state: Color hints (deprecated in OpenGL 3.0+) - glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Improve quality of color and texture coordinate interpolation - glShadeModel(GL_SMOOTH); // Smooth shading between vertex (vertex colors interpolation) -#endif - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Store screen size into global variables - RLGL.State.framebufferWidth = width; - RLGL.State.framebufferHeight = height; - - TRACELOG(LOG_INFO, "RLGL: Default OpenGL state initialized successfully"); - //---------------------------------------------------------- -#endif - - // Init state: Color/Depth buffers clear - glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Set clear color (black) - glClearDepth(1.0f); // Set clear depth value (default) - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear color and depth buffers (depth buffer required for 3D) -} - -// Vertex Buffer Object deinitialization (memory free) -void rlglClose(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - rlUnloadRenderBatch(RLGL.defaultBatch); - - rlUnloadShaderDefault(); // Unload default shader - - glDeleteTextures(1, &RLGL.State.defaultTextureId); // Unload default texture - TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Default texture unloaded successfully", RLGL.State.defaultTextureId); -#endif -} - -// Load OpenGL extensions -// NOTE: External loader function could be passed as a pointer -void rlLoadExtensions(void *loader) -{ -#if defined(GRAPHICS_API_OPENGL_33) // Also defined for GRAPHICS_API_OPENGL_21 - // NOTE: glad is generated and contains only required OpenGL 3.3 Core extensions (and lower versions) - #if !defined(__APPLE__) - if (!gladLoadGLLoader((GLADloadproc)loader)) TRACELOG(LOG_WARNING, "GLAD: Cannot load OpenGL extensions"); - else TRACELOG(LOG_INFO, "GLAD: OpenGL extensions loaded successfully"); - #endif - - // Get number of supported extensions - GLint numExt = 0; - glGetIntegerv(GL_NUM_EXTENSIONS, &numExt); - TRACELOG(LOG_INFO, "GL: Supported extensions count: %i", numExt); - -#if defined(SUPPORT_GL_DETAILS_INFO) - // Get supported extensions list - // WARNING: glGetStringi() not available on OpenGL 2.1 - char **extList = RL_MALLOC(sizeof(char *)*numExt); - TRACELOG(LOG_INFO, "GL: OpenGL extensions:"); - for (int i = 0; i < numExt; i++) - { - extList[i] = (char *)glGetStringi(GL_EXTENSIONS, i); - TRACELOG(LOG_INFO, " %s", extList[i]); - } - RL_FREE(extList); // Free extensions pointers -#endif - - // Register supported extensions flags - // OpenGL 3.3 extensions supported by default (core) - RLGL.ExtSupported.vao = true; - RLGL.ExtSupported.instancing = true; - RLGL.ExtSupported.texNPOT = true; - RLGL.ExtSupported.texFloat32 = true; - RLGL.ExtSupported.texDepth = true; - RLGL.ExtSupported.maxDepthBits = 32; - RLGL.ExtSupported.texAnisoFilter = true; - RLGL.ExtSupported.texMirrorClamp = true; - #if !defined(__APPLE__) - // NOTE: With GLAD, we can check if an extension is supported using the GLAD_GL_xxx booleans - if (GLAD_GL_EXT_texture_compression_s3tc) RLGL.ExtSupported.texCompDXT = true; // Texture compression: DXT - if (GLAD_GL_ARB_ES3_compatibility) RLGL.ExtSupported.texCompETC2 = true; // Texture compression: ETC2/EAC - #endif -#endif // GRAPHICS_API_OPENGL_33 - -#if defined(GRAPHICS_API_OPENGL_ES2) - // Get supported extensions list - GLint numExt = 0; - const char **extList = RL_MALLOC(512*sizeof(const char *)); // Allocate 512 strings pointers (2 KB) - const char *extensions = (const char *)glGetString(GL_EXTENSIONS); // One big const string - - // NOTE: We have to duplicate string because glGetString() returns a const string - int len = strlen(extensions) + 1; - char *extensionsDup = (char *)RL_CALLOC(len, sizeof(char)); - strcpy(extensionsDup, extensions); - extList[numExt] = extensionsDup; - - for (int i = 0; i < len; i++) - { - if (extensionsDup[i] == ' ') - { - extensionsDup[i] = '\0'; - numExt++; - extList[numExt] = &extensionsDup[i + 1]; - } - } - - TRACELOG(LOG_INFO, "GL: Supported extensions count: %i", numExt); - -#if defined(SUPPORT_GL_DETAILS_INFO) - TRACELOG(LOG_INFO, "GL: OpenGL extensions:"); - for (int i = 0; i < numExt; i++) TRACELOG(LOG_INFO, " %s", extList[i]); -#endif - - // Check required extensions - for (int i = 0; i < numExt; i++) - { - // Check VAO support - // NOTE: Only check on OpenGL ES, OpenGL 3.3 has VAO support as core feature - if (strcmp(extList[i], (const char *)"GL_OES_vertex_array_object") == 0) - { - // The extension is supported by our hardware and driver, try to get related functions pointers - // NOTE: emscripten does not support VAOs natively, it uses emulation and it reduces overall performance... - glGenVertexArrays = (PFNGLGENVERTEXARRAYSOESPROC)eglGetProcAddress("glGenVertexArraysOES"); - glBindVertexArray = (PFNGLBINDVERTEXARRAYOESPROC)eglGetProcAddress("glBindVertexArrayOES"); - glDeleteVertexArrays = (PFNGLDELETEVERTEXARRAYSOESPROC)eglGetProcAddress("glDeleteVertexArraysOES"); - //glIsVertexArray = (PFNGLISVERTEXARRAYOESPROC)eglGetProcAddress("glIsVertexArrayOES"); // NOTE: Fails in WebGL, omitted - - if ((glGenVertexArrays != NULL) && (glBindVertexArray != NULL) && (glDeleteVertexArrays != NULL)) RLGL.ExtSupported.vao = true; - } - - // Check instanced rendering support - if (strcmp(extList[i], (const char *)"GL_ANGLE_instanced_arrays") == 0) // Web ANGLE - { - glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDEXTPROC)eglGetProcAddress("glDrawArraysInstancedANGLE"); - glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDEXTPROC)eglGetProcAddress("glDrawElementsInstancedANGLE"); - glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISOREXTPROC)eglGetProcAddress("glVertexAttribDivisorANGLE"); - - if ((glDrawArraysInstanced != NULL) && (glDrawElementsInstanced != NULL) && (glVertexAttribDivisor != NULL)) RLGL.ExtSupported.instancing = true; - } - else - { - if ((strcmp(extList[i], (const char *)"GL_EXT_draw_instanced") == 0) && // Standard EXT - (strcmp(extList[i], (const char *)"GL_EXT_instanced_arrays") == 0)) - { - glDrawArraysInstanced = (PFNGLDRAWARRAYSINSTANCEDEXTPROC)eglGetProcAddress("glDrawArraysInstancedEXT"); - glDrawElementsInstanced = (PFNGLDRAWELEMENTSINSTANCEDEXTPROC)eglGetProcAddress("glDrawElementsInstancedEXT"); - glVertexAttribDivisor = (PFNGLVERTEXATTRIBDIVISOREXTPROC)eglGetProcAddress("glVertexAttribDivisorEXT"); - - if ((glDrawArraysInstanced != NULL) && (glDrawElementsInstanced != NULL) && (glVertexAttribDivisor != NULL)) RLGL.ExtSupported.instancing = true; - } - } - - // Check NPOT textures support - // NOTE: Only check on OpenGL ES, OpenGL 3.3 has NPOT textures full support as core feature - if (strcmp(extList[i], (const char *)"GL_OES_texture_npot") == 0) RLGL.ExtSupported.texNPOT = true; - - // Check texture float support - if (strcmp(extList[i], (const char *)"GL_OES_texture_float") == 0) RLGL.ExtSupported.texFloat32 = true; - - // Check depth texture support - if ((strcmp(extList[i], (const char *)"GL_OES_depth_texture") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBGL_depth_texture") == 0)) RLGL.ExtSupported.texDepth = true; - - if (strcmp(extList[i], (const char *)"GL_OES_depth24") == 0) RLGL.ExtSupported.maxDepthBits = 24; - if (strcmp(extList[i], (const char *)"GL_OES_depth32") == 0) RLGL.ExtSupported.maxDepthBits = 32; - - // Check texture compression support: DXT - if ((strcmp(extList[i], (const char *)"GL_EXT_texture_compression_s3tc") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBGL_compressed_texture_s3tc") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBKIT_WEBGL_compressed_texture_s3tc") == 0)) RLGL.ExtSupported.texCompDXT = true; - - // Check texture compression support: ETC1 - if ((strcmp(extList[i], (const char *)"GL_OES_compressed_ETC1_RGB8_texture") == 0) || - (strcmp(extList[i], (const char *)"GL_WEBGL_compressed_texture_etc1") == 0)) RLGL.ExtSupported.texCompETC1 = true; - - // Check texture compression support: ETC2/EAC - if (strcmp(extList[i], (const char *)"GL_ARB_ES3_compatibility") == 0) RLGL.ExtSupported.texCompETC2 = true; - - // Check texture compression support: PVR - if (strcmp(extList[i], (const char *)"GL_IMG_texture_compression_pvrtc") == 0) RLGL.ExtSupported.texCompPVRT = true; - - // Check texture compression support: ASTC - if (strcmp(extList[i], (const char *)"GL_KHR_texture_compression_astc_hdr") == 0) RLGL.ExtSupported.texCompASTC = true; - - // Check anisotropic texture filter support - if (strcmp(extList[i], (const char *)"GL_EXT_texture_filter_anisotropic") == 0) RLGL.ExtSupported.texAnisoFilter = true; - - // Check clamp mirror wrap mode support - if (strcmp(extList[i], (const char *)"GL_EXT_texture_mirror_clamp") == 0) RLGL.ExtSupported.texMirrorClamp = true; - } - - // Free extensions pointers - RL_FREE(extList); - RL_FREE(extensionsDup); // Duplicated string must be deallocated -#endif // GRAPHICS_API_OPENGL_ES2 - - // Check OpenGL information and capabilities - //------------------------------------------------------------------------------ - // Show current OpenGL and GLSL version - TRACELOG(LOG_INFO, "GL: OpenGL device information:"); - TRACELOG(LOG_INFO, " > Vendor: %s", glGetString(GL_VENDOR)); - TRACELOG(LOG_INFO, " > Renderer: %s", glGetString(GL_RENDERER)); - TRACELOG(LOG_INFO, " > Version: %s", glGetString(GL_VERSION)); - TRACELOG(LOG_INFO, " > GLSL: %s", glGetString(GL_SHADING_LANGUAGE_VERSION)); - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: Anisotropy levels capability is an extension - #ifndef GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT - #define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF - #endif - glGetFloatv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &RLGL.ExtSupported.maxAnisotropyLevel); - -#if defined(SUPPORT_GL_DETAILS_INFO) - // Show some OpenGL GPU capabilities - TRACELOG(LOG_INFO, "GL: OpenGL capabilities:"); - GLint capability = 0; - glGetIntegerv(GL_MAX_TEXTURE_SIZE, &capability); - TRACELOG(LOG_INFO, " GL_MAX_TEXTURE_SIZE: %i", capability); - glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &capability); - TRACELOG(LOG_INFO, " GL_MAX_CUBE_MAP_TEXTURE_SIZE: %i", capability); - glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &capability); - TRACELOG(LOG_INFO, " GL_MAX_TEXTURE_IMAGE_UNITS: %i", capability); - glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &capability); - TRACELOG(LOG_INFO, " GL_MAX_VERTEX_ATTRIBS: %i", capability); - #if !defined(GRAPHICS_API_OPENGL_ES2) - glGetIntegerv(GL_MAX_UNIFORM_BLOCK_SIZE, &capability); - TRACELOG(LOG_INFO, " GL_MAX_UNIFORM_BLOCK_SIZE: %i", capability); - glGetIntegerv(GL_MAX_DRAW_BUFFERS, &capability); - TRACELOG(LOG_INFO, " GL_MAX_DRAW_BUFFERS: %i", capability); - if (RLGL.ExtSupported.texAnisoFilter) TRACELOG(LOG_INFO, " GL_MAX_TEXTURE_MAX_ANISOTROPY: %.0f", RLGL.ExtSupported.maxAnisotropyLevel); - #endif - glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &capability); - TRACELOG(LOG_INFO, " GL_NUM_COMPRESSED_TEXTURE_FORMATS: %i", capability); - GLint format[32] = { 0 }; - glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, format); - for (int i = 0; i < capability; i++) TRACELOG(LOG_INFO, " %s", rlGetCompressedFormatName(format[i])); - - /* - // Following capabilities are only supported by OpenGL 4.3 or greater - glGetIntegerv(GL_MAX_VERTEX_ATTRIB_BINDINGS, &capability); - TRACELOG(LOG_INFO, " GL_MAX_VERTEX_ATTRIB_BINDINGS: %i", capability); - glGetIntegerv(GL_MAX_UNIFORM_LOCATIONS, &capability); - TRACELOG(LOG_INFO, " GL_MAX_UNIFORM_LOCATIONS: %i", capability); - */ -#else // SUPPORT_GL_DETAILS_INFO - - // Show some basic info about GL supported features - #if defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.ExtSupported.vao) TRACELOG(LOG_INFO, "GL: VAO extension detected, VAO functions loaded successfully"); - else TRACELOG(LOG_WARNING, "GL: VAO extension not found, VAO not supported"); - if (RLGL.ExtSupported.texNPOT) TRACELOG(LOG_INFO, "GL: NPOT textures extension detected, full NPOT textures supported"); - else TRACELOG(LOG_WARNING, "GL: NPOT textures extension not found, limited NPOT support (no-mipmaps, no-repeat)"); - #endif - if (RLGL.ExtSupported.texCompDXT) TRACELOG(LOG_INFO, "GL: DXT compressed textures supported"); - if (RLGL.ExtSupported.texCompETC1) TRACELOG(LOG_INFO, "GL: ETC1 compressed textures supported"); - if (RLGL.ExtSupported.texCompETC2) TRACELOG(LOG_INFO, "GL: ETC2/EAC compressed textures supported"); - if (RLGL.ExtSupported.texCompPVRT) TRACELOG(LOG_INFO, "GL: PVRT compressed textures supported"); - if (RLGL.ExtSupported.texCompASTC) TRACELOG(LOG_INFO, "GL: ASTC compressed textures supported"); -#endif // SUPPORT_GL_DETAILS_INFO - -#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2 -} - -// Returns current OpenGL version -int rlGetVersion(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) - return OPENGL_11; -#endif -#if defined(GRAPHICS_API_OPENGL_21) - #if defined(__APPLE__) - return OPENGL_33; // NOTE: Force OpenGL 3.3 on OSX - #else - return OPENGL_21; - #endif -#elif defined(GRAPHICS_API_OPENGL_33) - return OPENGL_33; -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - return OPENGL_ES_20; -#endif -} - -// Get default framebuffer width -int rlGetFramebufferWidth(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - return RLGL.State.framebufferWidth; -#else - return 0; -#endif -} - -// Get default framebuffer height -int rlGetFramebufferHeight(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - return RLGL.State.framebufferHeight; -#else - return 0; -#endif -} - -// Get default internal shader (simple texture + tint color) -Shader rlGetShaderDefault(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - return RLGL.State.defaultShader; -#else - Shader shader = { 0 }; - return shader; -#endif -} - -// Get default internal texture (white texture) -Texture2D rlGetTextureDefault(void) -{ - Texture2D texture = { 0 }; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - texture.id = RLGL.State.defaultTextureId; - texture.width = 1; - texture.height = 1; - texture.mipmaps = 1; - texture.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; -#endif - return texture; -} - -// Render batch management -//------------------------------------------------------------------------------------------------ -// Load render batch -RenderBatch rlLoadRenderBatch(int numBuffers, int bufferElements) -{ - RenderBatch batch = { 0 }; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Initialize CPU (RAM) vertex buffers (position, texcoord, color data and indexes) - //-------------------------------------------------------------------------------------------- - batch.vertexBuffer = (VertexBuffer *)RL_MALLOC(sizeof(VertexBuffer)*numBuffers); - - for (int i = 0; i < numBuffers; i++) - { - batch.vertexBuffer[i].elementsCount = bufferElements; - - batch.vertexBuffer[i].vertices = (float *)RL_MALLOC(bufferElements*3*4*sizeof(float)); // 3 float by vertex, 4 vertex by quad - batch.vertexBuffer[i].texcoords = (float *)RL_MALLOC(bufferElements*2*4*sizeof(float)); // 2 float by texcoord, 4 texcoord by quad - batch.vertexBuffer[i].colors = (unsigned char *)RL_MALLOC(bufferElements*4*4*sizeof(unsigned char)); // 4 float by color, 4 colors by quad -#if defined(GRAPHICS_API_OPENGL_33) - batch.vertexBuffer[i].indices = (unsigned int *)RL_MALLOC(bufferElements*6*sizeof(unsigned int)); // 6 int by quad (indices) -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - batch.vertexBuffer[i].indices = (unsigned short *)RL_MALLOC(bufferElements*6*sizeof(unsigned short)); // 6 int by quad (indices) -#endif - - for (int j = 0; j < (3*4*bufferElements); j++) batch.vertexBuffer[i].vertices[j] = 0.0f; - for (int j = 0; j < (2*4*bufferElements); j++) batch.vertexBuffer[i].texcoords[j] = 0.0f; - for (int j = 0; j < (4*4*bufferElements); j++) batch.vertexBuffer[i].colors[j] = 0; - - int k = 0; - - // Indices can be initialized right now - for (int j = 0; j < (6*bufferElements); j += 6) - { - batch.vertexBuffer[i].indices[j] = 4*k; - batch.vertexBuffer[i].indices[j + 1] = 4*k + 1; - batch.vertexBuffer[i].indices[j + 2] = 4*k + 2; - batch.vertexBuffer[i].indices[j + 3] = 4*k; - batch.vertexBuffer[i].indices[j + 4] = 4*k + 2; - batch.vertexBuffer[i].indices[j + 5] = 4*k + 3; - - k++; - } - - batch.vertexBuffer[i].vCounter = 0; - batch.vertexBuffer[i].tcCounter = 0; - batch.vertexBuffer[i].cCounter = 0; - } - - TRACELOG(LOG_INFO, "RLGL: Render batch vertex buffers loaded successfully in RAM (CPU)"); - //-------------------------------------------------------------------------------------------- - - // Upload to GPU (VRAM) vertex data and initialize VAOs/VBOs - //-------------------------------------------------------------------------------------------- - for (int i = 0; i < numBuffers; i++) - { - if (RLGL.ExtSupported.vao) - { - // Initialize Quads VAO - glGenVertexArrays(1, &batch.vertexBuffer[i].vaoId); - glBindVertexArray(batch.vertexBuffer[i].vaoId); - } - - // Quads - Vertex buffers binding and attributes enable - // Vertex position buffer (shader-location = 0) - glGenBuffers(1, &batch.vertexBuffer[i].vboId[0]); - glBindBuffer(GL_ARRAY_BUFFER, batch.vertexBuffer[i].vboId[0]); - glBufferData(GL_ARRAY_BUFFER, bufferElements*3*4*sizeof(float), batch.vertexBuffer[i].vertices, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_POSITION]); - glVertexAttribPointer(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - - // Vertex texcoord buffer (shader-location = 1) - glGenBuffers(1, &batch.vertexBuffer[i].vboId[1]); - glBindBuffer(GL_ARRAY_BUFFER, batch.vertexBuffer[i].vboId[1]); - glBufferData(GL_ARRAY_BUFFER, bufferElements*2*4*sizeof(float), batch.vertexBuffer[i].texcoords, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_TEXCOORD01]); - glVertexAttribPointer(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); - - // Vertex color buffer (shader-location = 3) - glGenBuffers(1, &batch.vertexBuffer[i].vboId[2]); - glBindBuffer(GL_ARRAY_BUFFER, batch.vertexBuffer[i].vboId[2]); - glBufferData(GL_ARRAY_BUFFER, bufferElements*4*4*sizeof(unsigned char), batch.vertexBuffer[i].colors, GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_COLOR]); - glVertexAttribPointer(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - - // Fill index buffer - glGenBuffers(1, &batch.vertexBuffer[i].vboId[3]); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, batch.vertexBuffer[i].vboId[3]); -#if defined(GRAPHICS_API_OPENGL_33) - glBufferData(GL_ELEMENT_ARRAY_BUFFER, bufferElements*6*sizeof(int), batch.vertexBuffer[i].indices, GL_STATIC_DRAW); -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - glBufferData(GL_ELEMENT_ARRAY_BUFFER, bufferElements*6*sizeof(short), batch.vertexBuffer[i].indices, GL_STATIC_DRAW); -#endif - } - - TRACELOG(LOG_INFO, "RLGL: Render batch vertex buffers loaded successfully in VRAM (GPU)"); - - // Unbind the current VAO - if (RLGL.ExtSupported.vao) glBindVertexArray(0); - //-------------------------------------------------------------------------------------------- - - // Init draw calls tracking system - //-------------------------------------------------------------------------------------------- - batch.draws = (DrawCall *)RL_MALLOC(DEFAULT_BATCH_DRAWCALLS*sizeof(DrawCall)); - - for (int i = 0; i < DEFAULT_BATCH_DRAWCALLS; i++) - { - batch.draws[i].mode = RL_QUADS; - batch.draws[i].vertexCount = 0; - batch.draws[i].vertexAlignment = 0; - //batch.draws[i].vaoId = 0; - //batch.draws[i].shaderId = 0; - batch.draws[i].textureId = RLGL.State.defaultTextureId; - //batch.draws[i].RLGL.State.projection = MatrixIdentity(); - //batch.draws[i].RLGL.State.modelview = MatrixIdentity(); - } - - batch.buffersCount = numBuffers; // Record buffer count - batch.drawsCounter = 1; // Reset draws counter - batch.currentDepth = -1.0f; // Reset depth value - //-------------------------------------------------------------------------------------------- -#endif - - return batch; -} - -// Unload default internal buffers vertex data from CPU and GPU -void rlUnloadRenderBatch(RenderBatch batch) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Unbind everything - if (RLGL.ExtSupported.vao) glBindVertexArray(0); - glDisableVertexAttribArray(0); - glDisableVertexAttribArray(1); - glDisableVertexAttribArray(2); - glDisableVertexAttribArray(3); - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - - // Unload all vertex buffers data - for (int i = 0; i < batch.buffersCount; i++) - { - // Delete VBOs from GPU (VRAM) - glDeleteBuffers(1, &batch.vertexBuffer[i].vboId[0]); - glDeleteBuffers(1, &batch.vertexBuffer[i].vboId[1]); - glDeleteBuffers(1, &batch.vertexBuffer[i].vboId[2]); - glDeleteBuffers(1, &batch.vertexBuffer[i].vboId[3]); - - // Delete VAOs from GPU (VRAM) - if (RLGL.ExtSupported.vao) glDeleteVertexArrays(1, &batch.vertexBuffer[i].vaoId); - - // Free vertex arrays memory from CPU (RAM) - RL_FREE(batch.vertexBuffer[i].vertices); - RL_FREE(batch.vertexBuffer[i].texcoords); - RL_FREE(batch.vertexBuffer[i].colors); - RL_FREE(batch.vertexBuffer[i].indices); - } - - // Unload arrays - RL_FREE(batch.vertexBuffer); - RL_FREE(batch.draws); -#endif -} - -// Draw render batch -// NOTE: We require a pointer to reset batch and increase current buffer (multi-buffer) -void rlDrawRenderBatch(RenderBatch *batch) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Update batch vertex buffers - //------------------------------------------------------------------------------------------------------------ - // NOTE: If there is not vertex data, buffers doesn't need to be updated (vertexCount > 0) - // TODO: If no data changed on the CPU arrays --> No need to re-update GPU arrays (change flag required) - if (batch->vertexBuffer[batch->currentBuffer].vCounter > 0) - { - // Activate elements VAO - if (RLGL.ExtSupported.vao) glBindVertexArray(batch->vertexBuffer[batch->currentBuffer].vaoId); - - // Vertex positions buffer - glBindBuffer(GL_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[0]); - glBufferSubData(GL_ARRAY_BUFFER, 0, batch->vertexBuffer[batch->currentBuffer].vCounter*3*sizeof(float), batch->vertexBuffer[batch->currentBuffer].vertices); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*3*4*batch->vertexBuffer[batch->currentBuffer].elementsCount, batch->vertexBuffer[batch->currentBuffer].vertices, GL_DYNAMIC_DRAW); // Update all buffer - - // Texture coordinates buffer - glBindBuffer(GL_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[1]); - glBufferSubData(GL_ARRAY_BUFFER, 0, batch->vertexBuffer[batch->currentBuffer].vCounter*2*sizeof(float), batch->vertexBuffer[batch->currentBuffer].texcoords); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*2*4*batch->vertexBuffer[batch->currentBuffer].elementsCount, batch->vertexBuffer[batch->currentBuffer].texcoords, GL_DYNAMIC_DRAW); // Update all buffer - - // Colors buffer - glBindBuffer(GL_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[2]); - glBufferSubData(GL_ARRAY_BUFFER, 0, batch->vertexBuffer[batch->currentBuffer].vCounter*4*sizeof(unsigned char), batch->vertexBuffer[batch->currentBuffer].colors); - //glBufferData(GL_ARRAY_BUFFER, sizeof(float)*4*4*batch->vertexBuffer[batch->currentBuffer].elementsCount, batch->vertexBuffer[batch->currentBuffer].colors, GL_DYNAMIC_DRAW); // Update all buffer - - // NOTE: glMapBuffer() causes sync issue. - // If GPU is working with this buffer, glMapBuffer() will wait(stall) until GPU to finish its job. - // To avoid waiting (idle), you can call first glBufferData() with NULL pointer before glMapBuffer(). - // If you do that, the previous data in PBO will be discarded and glMapBuffer() returns a new - // allocated pointer immediately even if GPU is still working with the previous data. - - // Another option: map the buffer object into client's memory - // Probably this code could be moved somewhere else... - // batch->vertexBuffer[batch->currentBuffer].vertices = (float *)glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE); - // if (batch->vertexBuffer[batch->currentBuffer].vertices) - // { - // Update vertex data - // } - // glUnmapBuffer(GL_ARRAY_BUFFER); - - // Unbind the current VAO - if (RLGL.ExtSupported.vao) glBindVertexArray(0); - } - //------------------------------------------------------------------------------------------------------------ - - // Draw batch vertex buffers (considering VR stereo if required) - //------------------------------------------------------------------------------------------------------------ - Matrix matProjection = RLGL.State.projection; - Matrix matModelView = RLGL.State.modelview; - - int eyesCount = 1; - if (RLGL.State.stereoRender) eyesCount = 2; - - for (int eye = 0; eye < eyesCount; eye++) - { - if (eyesCount == 2) - { - // Setup current eye viewport (half screen width) - rlViewport(eye*RLGL.State.framebufferWidth/2, 0, RLGL.State.framebufferWidth/2, RLGL.State.framebufferHeight); - - // Set current eye view offset to modelview matrix - rlSetMatrixModelview(MatrixMultiply(matModelView, RLGL.State.viewOffsetStereo[eye])); - // Set current eye projection matrix - rlSetMatrixProjection(RLGL.State.projectionStereo[eye]); - } - - // Draw buffers - if (batch->vertexBuffer[batch->currentBuffer].vCounter > 0) - { - // Set current shader and upload current MVP matrix - glUseProgram(RLGL.State.currentShader.id); - - // Create modelview-projection matrix and upload to shader - Matrix matMVP = MatrixMultiply(RLGL.State.modelview, RLGL.State.projection); - glUniformMatrix4fv(RLGL.State.currentShader.locs[SHADER_LOC_MATRIX_MVP], 1, false, MatrixToFloat(matMVP)); - - if (RLGL.ExtSupported.vao) glBindVertexArray(batch->vertexBuffer[batch->currentBuffer].vaoId); - else - { - // Bind vertex attrib: position (shader-location = 0) - glBindBuffer(GL_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[0]); - glVertexAttribPointer(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_POSITION], 3, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_POSITION]); - - // Bind vertex attrib: texcoord (shader-location = 1) - glBindBuffer(GL_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[1]); - glVertexAttribPointer(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_TEXCOORD01], 2, GL_FLOAT, 0, 0, 0); - glEnableVertexAttribArray(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_TEXCOORD01]); - - // Bind vertex attrib: color (shader-location = 3) - glBindBuffer(GL_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[2]); - glVertexAttribPointer(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_COLOR], 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, 0); - glEnableVertexAttribArray(RLGL.State.currentShader.locs[SHADER_LOC_VERTEX_COLOR]); - - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, batch->vertexBuffer[batch->currentBuffer].vboId[3]); - } - - // Setup some default shader values - glUniform4f(RLGL.State.currentShader.locs[SHADER_LOC_COLOR_DIFFUSE], 1.0f, 1.0f, 1.0f, 1.0f); - glUniform1i(RLGL.State.currentShader.locs[SHADER_LOC_MAP_DIFFUSE], 0); // Active default sampler2D: texture0 - - // Activate additional sampler textures - // Those additional textures will be common for all draw calls of the batch - for (int i = 0; i < MAX_BATCH_ACTIVE_TEXTURES; i++) - { - if (RLGL.State.activeTextureId[i] > 0) - { - glActiveTexture(GL_TEXTURE0 + 1 + i); - glBindTexture(GL_TEXTURE_2D, RLGL.State.activeTextureId[i]); - } - } - - // Activate default sampler2D texture0 (one texture is always active for default batch shader) - // NOTE: Batch system accumulates calls by texture0 changes, additional textures are enabled for all the draw calls - glActiveTexture(GL_TEXTURE0); - - for (int i = 0, vertexOffset = 0; i < batch->drawsCounter; i++) - { - // Bind current draw call texture, activated as GL_TEXTURE0 and binded to sampler2D texture0 by default - glBindTexture(GL_TEXTURE_2D, batch->draws[i].textureId); - - if ((batch->draws[i].mode == RL_LINES) || (batch->draws[i].mode == RL_TRIANGLES)) glDrawArrays(batch->draws[i].mode, vertexOffset, batch->draws[i].vertexCount); - else - { -#if defined(GRAPHICS_API_OPENGL_33) - // We need to define the number of indices to be processed: quadsCount*6 - // NOTE: The final parameter tells the GPU the offset in bytes from the - // start of the index buffer to the location of the first index to process - glDrawElements(GL_TRIANGLES, batch->draws[i].vertexCount/4*6, GL_UNSIGNED_INT, (GLvoid *)(vertexOffset/4*6*sizeof(GLuint))); -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - glDrawElements(GL_TRIANGLES, batch->draws[i].vertexCount/4*6, GL_UNSIGNED_SHORT, (GLvoid *)(vertexOffset/4*6*sizeof(GLushort))); -#endif - } - - vertexOffset += (batch->draws[i].vertexCount + batch->draws[i].vertexAlignment); - } - - if (!RLGL.ExtSupported.vao) - { - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); - } - - glBindTexture(GL_TEXTURE_2D, 0); // Unbind textures - } - - if (RLGL.ExtSupported.vao) glBindVertexArray(0); // Unbind VAO - - glUseProgram(0); // Unbind shader program - } - //------------------------------------------------------------------------------------------------------------ - - // Reset batch buffers - //------------------------------------------------------------------------------------------------------------ - // Reset vertex counters for next frame - batch->vertexBuffer[batch->currentBuffer].vCounter = 0; - batch->vertexBuffer[batch->currentBuffer].tcCounter = 0; - batch->vertexBuffer[batch->currentBuffer].cCounter = 0; - - // Reset depth for next draw - batch->currentDepth = -1.0f; - - // Restore projection/modelview matrices - RLGL.State.projection = matProjection; - RLGL.State.modelview = matModelView; - - // Reset RLGL.currentBatch->draws array - for (int i = 0; i < DEFAULT_BATCH_DRAWCALLS; i++) - { - batch->draws[i].mode = RL_QUADS; - batch->draws[i].vertexCount = 0; - batch->draws[i].textureId = RLGL.State.defaultTextureId; - } - - // Reset active texture units for next batch - for (int i = 0; i < MAX_BATCH_ACTIVE_TEXTURES; i++) RLGL.State.activeTextureId[i] = 0; - - // Reset draws counter to one draw for the batch - batch->drawsCounter = 1; - //------------------------------------------------------------------------------------------------------------ - - // Change to next buffer in the list (in case of multi-buffering) - batch->currentBuffer++; - if (batch->currentBuffer >= batch->buffersCount) batch->currentBuffer = 0; -#endif -} - -// Set the active render batch for rlgl -void rlSetRenderBatchActive(RenderBatch *batch) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - rlDrawRenderBatch(RLGL.currentBatch); - - if (batch != NULL) RLGL.currentBatch = batch; - else RLGL.currentBatch = &RLGL.defaultBatch; -#endif -} - -// Update and draw internal render batch -void rlDrawRenderBatchActive(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - rlDrawRenderBatch(RLGL.currentBatch); // NOTE: Stereo rendering is checked inside -#endif -} - -// Check internal buffer overflow for a given number of vertex -// and force a RenderBatch draw call if required -bool rlCheckRenderBatchLimit(int vCount) -{ - bool overflow = false; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if ((RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].vCounter + vCount) >= - (RLGL.currentBatch->vertexBuffer[RLGL.currentBatch->currentBuffer].elementsCount*4)) - { - overflow = true; - rlDrawRenderBatch(RLGL.currentBatch); // NOTE: Stereo rendering is checked inside - } -#endif - - return overflow; -} - -// Textures data management -//----------------------------------------------------------------------------------------- -// Convert image data to OpenGL texture (returns OpenGL valid Id) -unsigned int rlLoadTexture(void *data, int width, int height, int format, int mipmapCount) -{ - glBindTexture(GL_TEXTURE_2D, 0); // Free any old binding - - unsigned int id = 0; - - // Check texture format support by OpenGL 1.1 (compressed textures not supported) -#if defined(GRAPHICS_API_OPENGL_11) - if (format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) - { - TRACELOG(LOG_WARNING, "GL: OpenGL 1.1 does not support GPU compressed texture formats"); - return id; - } -#else - if ((!RLGL.ExtSupported.texCompDXT) && ((format == PIXELFORMAT_COMPRESSED_DXT1_RGB) || (format == PIXELFORMAT_COMPRESSED_DXT1_RGBA) || - (format == PIXELFORMAT_COMPRESSED_DXT3_RGBA) || (format == PIXELFORMAT_COMPRESSED_DXT5_RGBA))) - { - TRACELOG(LOG_WARNING, "GL: DXT compressed texture format not supported"); - return id; - } -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if ((!RLGL.ExtSupported.texCompETC1) && (format == PIXELFORMAT_COMPRESSED_ETC1_RGB)) - { - TRACELOG(LOG_WARNING, "GL: ETC1 compressed texture format not supported"); - return id; - } - - if ((!RLGL.ExtSupported.texCompETC2) && ((format == PIXELFORMAT_COMPRESSED_ETC2_RGB) || (format == PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA))) - { - TRACELOG(LOG_WARNING, "GL: ETC2 compressed texture format not supported"); - return id; - } - - if ((!RLGL.ExtSupported.texCompPVRT) && ((format == PIXELFORMAT_COMPRESSED_PVRT_RGB) || (format == PIXELFORMAT_COMPRESSED_PVRT_RGBA))) - { - TRACELOG(LOG_WARNING, "GL: PVRT compressed texture format not supported"); - return id; - } - - if ((!RLGL.ExtSupported.texCompASTC) && ((format == PIXELFORMAT_COMPRESSED_ASTC_4x4_RGBA) || (format == PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA))) - { - TRACELOG(LOG_WARNING, "GL: ASTC compressed texture format not supported"); - return id; - } -#endif -#endif // GRAPHICS_API_OPENGL_11 - - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - - glGenTextures(1, &id); // Generate texture id - - glBindTexture(GL_TEXTURE_2D, id); - - int mipWidth = width; - int mipHeight = height; - int mipOffset = 0; // Mipmap data offset - - // Load the different mipmap levels - for (int i = 0; i < mipmapCount; i++) - { - unsigned int mipSize = rlGetPixelDataSize(mipWidth, mipHeight, format); - - unsigned int glInternalFormat, glFormat, glType; - rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType); - - TRACELOGD("TEXTURE: Load mipmap level %i (%i x %i), size: %i, offset: %i", i, mipWidth, mipHeight, mipSize, mipOffset); - - if (glInternalFormat != -1) - { - if (format < PIXELFORMAT_COMPRESSED_DXT1_RGB) glTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, glFormat, glType, (unsigned char *)data + mipOffset); -#if !defined(GRAPHICS_API_OPENGL_11) - else glCompressedTexImage2D(GL_TEXTURE_2D, i, glInternalFormat, mipWidth, mipHeight, 0, mipSize, (unsigned char *)data + mipOffset); -#endif - -#if defined(GRAPHICS_API_OPENGL_33) - if (format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) - { - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ONE }; - glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); - } - else if (format == PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA) - { -#if defined(GRAPHICS_API_OPENGL_21) - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ALPHA }; -#elif defined(GRAPHICS_API_OPENGL_33) - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_GREEN }; -#endif - glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); - } -#endif - } - - mipWidth /= 2; - mipHeight /= 2; - mipOffset += mipSize; - - // Security check for NPOT textures - if (mipWidth < 1) mipWidth = 1; - if (mipHeight < 1) mipHeight = 1; - } - - // Texture parameters configuration - // NOTE: glTexParameteri does NOT affect texture uploading, just the way it's used -#if defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: OpenGL ES 2.0 with no GL_OES_texture_npot support (i.e. WebGL) has limited NPOT support, so CLAMP_TO_EDGE must be used - if (RLGL.ExtSupported.texNPOT) - { - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture to repeat on x-axis - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // Set texture to repeat on y-axis - } - else - { - // NOTE: If using negative texture coordinates (LoadOBJ()), it does not work! - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); // Set texture to clamp on x-axis - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); // Set texture to clamp on y-axis - } -#else - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); // Set texture to repeat on x-axis - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); // Set texture to repeat on y-axis -#endif - - // Magnification and minification filters - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); // Alternative: GL_LINEAR - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); // Alternative: GL_LINEAR - -#if defined(GRAPHICS_API_OPENGL_33) - if (mipmapCount > 1) - { - // Activate Trilinear filtering if mipmaps are available - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); - } -#endif - - // At this point we have the texture loaded in GPU and texture parameters configured - - // NOTE: If mipmaps were not in data, they are not generated automatically - - // Unbind current texture - glBindTexture(GL_TEXTURE_2D, 0); - - if (id > 0) TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Texture loaded successfully (%ix%i - %i mipmaps)", id, width, height, mipmapCount); - else TRACELOG(LOG_WARNING, "TEXTURE: Failed to load texture"); - - return id; -} - -// Load depth texture/renderbuffer (to be attached to fbo) -// WARNING: OpenGL ES 2.0 requires GL_OES_depth_texture/WEBGL_depth_texture extensions -unsigned int rlLoadTextureDepth(int width, int height, bool useRenderBuffer) -{ - unsigned int id = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // In case depth textures not supported, we force renderbuffer usage - if (!RLGL.ExtSupported.texDepth) useRenderBuffer = true; - - // NOTE: We let the implementation to choose the best bit-depth - // Possible formats: GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24, GL_DEPTH_COMPONENT32 and GL_DEPTH_COMPONENT32F - unsigned int glInternalFormat = GL_DEPTH_COMPONENT; - -#if defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.ExtSupported.maxDepthBits == 32) glInternalFormat = GL_DEPTH_COMPONENT32_OES; - else if (RLGL.ExtSupported.maxDepthBits == 24) glInternalFormat = GL_DEPTH_COMPONENT24_OES; - else glInternalFormat = GL_DEPTH_COMPONENT16; -#endif - - if (!useRenderBuffer && RLGL.ExtSupported.texDepth) - { - glGenTextures(1, &id); - glBindTexture(GL_TEXTURE_2D, id); - glTexImage2D(GL_TEXTURE_2D, 0, glInternalFormat, width, height, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, NULL); - - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - - glBindTexture(GL_TEXTURE_2D, 0); - - TRACELOG(LOG_INFO, "TEXTURE: Depth texture loaded successfully"); - } - else - { - // Create the renderbuffer that will serve as the depth attachment for the framebuffer - // NOTE: A renderbuffer is simpler than a texture and could offer better performance on embedded devices - glGenRenderbuffers(1, &id); - glBindRenderbuffer(GL_RENDERBUFFER, id); - glRenderbufferStorage(GL_RENDERBUFFER, glInternalFormat, width, height); - - glBindRenderbuffer(GL_RENDERBUFFER, 0); - - TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Depth renderbuffer loaded successfully (%i bits)", id, (RLGL.ExtSupported.maxDepthBits >= 24)? RLGL.ExtSupported.maxDepthBits : 16); - } -#endif - - return id; -} - -// Load texture cubemap -// NOTE: Cubemap data is expected to be 6 images in a single data array (one after the other), -// expected the following convention: +X, -X, +Y, -Y, +Z, -Z -unsigned int rlLoadTextureCubemap(void *data, int size, int format) -{ - unsigned int id = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - unsigned int dataSize = rlGetPixelDataSize(size, size, format); - - glGenTextures(1, &id); - glBindTexture(GL_TEXTURE_CUBE_MAP, id); - - unsigned int glInternalFormat, glFormat, glType; - rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType); - - if (glInternalFormat != -1) - { - // Load cubemap faces - for (unsigned int i = 0; i < 6; i++) - { - if (data == NULL) - { - if (format < PIXELFORMAT_COMPRESSED_DXT1_RGB) - { - if (format == PIXELFORMAT_UNCOMPRESSED_R32G32B32) - { - // Instead of using a sized internal texture format (GL_RGB16F, GL_RGB32F), we let the driver to choose the better format for us (GL_RGB) - if (RLGL.ExtSupported.texFloat32) glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGB, size, size, 0, GL_RGB, GL_FLOAT, NULL); - else TRACELOG(LOG_WARNING, "TEXTURES: Cubemap requested format not supported"); - } - else if ((format == PIXELFORMAT_UNCOMPRESSED_R32) || (format == PIXELFORMAT_UNCOMPRESSED_R32G32B32A32)) TRACELOG(LOG_WARNING, "TEXTURES: Cubemap requested format not supported"); - else glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, size, size, 0, glFormat, glType, NULL); - } - else TRACELOG(LOG_WARNING, "TEXTURES: Empty cubemap creation does not support compressed format"); - } - else - { - if (format < PIXELFORMAT_COMPRESSED_DXT1_RGB) glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, size, size, 0, glFormat, glType, (unsigned char *)data + i*dataSize); - else glCompressedTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, size, size, 0, dataSize, (unsigned char *)data + i*dataSize); - } - -#if defined(GRAPHICS_API_OPENGL_33) - if (format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) - { - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ONE }; - glTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); - } - else if (format == PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA) - { -#if defined(GRAPHICS_API_OPENGL_21) - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_ALPHA }; -#elif defined(GRAPHICS_API_OPENGL_33) - GLint swizzleMask[] = { GL_RED, GL_RED, GL_RED, GL_GREEN }; -#endif - glTexParameteriv(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_SWIZZLE_RGBA, swizzleMask); - } -#endif - } - } - - // Set cubemap texture sampling parameters - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); -#if defined(GRAPHICS_API_OPENGL_33) - glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); // Flag not supported on OpenGL ES 2.0 -#endif - - glBindTexture(GL_TEXTURE_CUBE_MAP, 0); -#endif - - if (id > 0) TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Cubemap texture loaded successfully (%ix%i)", id, size, size); - else TRACELOG(LOG_WARNING, "TEXTURE: Failed to load cubemap texture"); - - return id; -} - -// Update already loaded texture in GPU with new data -// NOTE: We don't know safely if internal texture format is the expected one... -void rlUpdateTexture(unsigned int id, int offsetX, int offsetY, int width, int height, int format, const void *data) -{ - glBindTexture(GL_TEXTURE_2D, id); - - unsigned int glInternalFormat, glFormat, glType; - rlGetGlTextureFormats(format, &glInternalFormat, &glFormat, &glType); - - if ((glInternalFormat != -1) && (format < PIXELFORMAT_COMPRESSED_DXT1_RGB)) - { - glTexSubImage2D(GL_TEXTURE_2D, 0, offsetX, offsetY, width, height, glFormat, glType, (unsigned char *)data); - } - else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to update for current texture format (%i)", id, format); -} - -// Get OpenGL internal formats and data type from raylib PixelFormat -void rlGetGlTextureFormats(int format, unsigned int *glInternalFormat, unsigned int *glFormat, unsigned int *glType) -{ - *glInternalFormat = -1; - *glFormat = -1; - *glType = -1; - - switch (format) - { - #if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_21) || defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: on OpenGL ES 2.0 (WebGL), internalFormat must match format and options allowed are: GL_LUMINANCE, GL_RGB, GL_RGBA - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: *glInternalFormat = GL_LUMINANCE_ALPHA; *glFormat = GL_LUMINANCE_ALPHA; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_UNSIGNED_SHORT_5_6_5; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_5_5_5_1; break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_4_4_4_4; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_BYTE; break; - #if !defined(GRAPHICS_API_OPENGL_11) - case PIXELFORMAT_UNCOMPRESSED_R32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_LUMINANCE; *glFormat = GL_LUMINANCE; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGB; *glFormat = GL_RGB; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGBA; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; // NOTE: Requires extension OES_texture_float - #endif - #elif defined(GRAPHICS_API_OPENGL_33) - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: *glInternalFormat = GL_R8; *glFormat = GL_RED; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: *glInternalFormat = GL_RG8; *glFormat = GL_RG; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: *glInternalFormat = GL_RGB565; *glFormat = GL_RGB; *glType = GL_UNSIGNED_SHORT_5_6_5; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: *glInternalFormat = GL_RGB8; *glFormat = GL_RGB; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: *glInternalFormat = GL_RGB5_A1; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_5_5_5_1; break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: *glInternalFormat = GL_RGBA4; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_SHORT_4_4_4_4; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: *glInternalFormat = GL_RGBA8; *glFormat = GL_RGBA; *glType = GL_UNSIGNED_BYTE; break; - case PIXELFORMAT_UNCOMPRESSED_R32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_R32F; *glFormat = GL_RED; *glType = GL_FLOAT; break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGB32F; *glFormat = GL_RGB; *glType = GL_FLOAT; break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: if (RLGL.ExtSupported.texFloat32) *glInternalFormat = GL_RGBA32F; *glFormat = GL_RGBA; *glType = GL_FLOAT; break; - #endif - #if !defined(GRAPHICS_API_OPENGL_11) - case PIXELFORMAT_COMPRESSED_DXT1_RGB: if (RLGL.ExtSupported.texCompDXT) *glInternalFormat = GL_COMPRESSED_RGB_S3TC_DXT1_EXT; break; - case PIXELFORMAT_COMPRESSED_DXT1_RGBA: if (RLGL.ExtSupported.texCompDXT) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT1_EXT; break; - case PIXELFORMAT_COMPRESSED_DXT3_RGBA: if (RLGL.ExtSupported.texCompDXT) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT3_EXT; break; - case PIXELFORMAT_COMPRESSED_DXT5_RGBA: if (RLGL.ExtSupported.texCompDXT) *glInternalFormat = GL_COMPRESSED_RGBA_S3TC_DXT5_EXT; break; - case PIXELFORMAT_COMPRESSED_ETC1_RGB: if (RLGL.ExtSupported.texCompETC1) *glInternalFormat = GL_ETC1_RGB8_OES; break; // NOTE: Requires OpenGL ES 2.0 or OpenGL 4.3 - case PIXELFORMAT_COMPRESSED_ETC2_RGB: if (RLGL.ExtSupported.texCompETC2) *glInternalFormat = GL_COMPRESSED_RGB8_ETC2; break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 - case PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA: if (RLGL.ExtSupported.texCompETC2) *glInternalFormat = GL_COMPRESSED_RGBA8_ETC2_EAC; break; // NOTE: Requires OpenGL ES 3.0 or OpenGL 4.3 - case PIXELFORMAT_COMPRESSED_PVRT_RGB: if (RLGL.ExtSupported.texCompPVRT) *glInternalFormat = GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG; break; // NOTE: Requires PowerVR GPU - case PIXELFORMAT_COMPRESSED_PVRT_RGBA: if (RLGL.ExtSupported.texCompPVRT) *glInternalFormat = GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG; break; // NOTE: Requires PowerVR GPU - case PIXELFORMAT_COMPRESSED_ASTC_4x4_RGBA: if (RLGL.ExtSupported.texCompASTC) *glInternalFormat = GL_COMPRESSED_RGBA_ASTC_4x4_KHR; break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 - case PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA: if (RLGL.ExtSupported.texCompASTC) *glInternalFormat = GL_COMPRESSED_RGBA_ASTC_8x8_KHR; break; // NOTE: Requires OpenGL ES 3.1 or OpenGL 4.3 - #endif - default: TRACELOG(LOG_WARNING, "TEXTURE: Current format not supported (%i)", format); break; - } -} - -// Unload texture from GPU memory -void rlUnloadTexture(unsigned int id) -{ - glDeleteTextures(1, &id); -} - -// Generate mipmap data for selected texture -void rlGenerateMipmaps(Texture2D *texture) -{ - glBindTexture(GL_TEXTURE_2D, texture->id); - - // Check if texture is power-of-two (POT) - bool texIsPOT = false; - - if (((texture->width > 0) && ((texture->width & (texture->width - 1)) == 0)) && - ((texture->height > 0) && ((texture->height & (texture->height - 1)) == 0))) texIsPOT = true; - -#if defined(GRAPHICS_API_OPENGL_11) - if (texIsPOT) - { - // WARNING: Manual mipmap generation only works for RGBA 32bit textures! - if (texture->format == PIXELFORMAT_UNCOMPRESSED_R8G8B8A8) - { - // Retrieve texture data from VRAM - void *texData = rlReadTexturePixels(*texture); - - // NOTE: Texture data size is reallocated to fit mipmaps data - // NOTE: CPU mipmap generation only supports RGBA 32bit data - int mipmapCount = rlGenerateMipmapsData(texData, texture->width, texture->height); - - int size = texture->width*texture->height*4; - int offset = size; - - int mipWidth = texture->width/2; - int mipHeight = texture->height/2; - - // Load the mipmaps - for (int level = 1; level < mipmapCount; level++) - { - glTexImage2D(GL_TEXTURE_2D, level, GL_RGBA8, mipWidth, mipHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, (unsigned char *)texData + offset); - - size = mipWidth*mipHeight*4; - offset += size; - - mipWidth /= 2; - mipHeight /= 2; - } - - texture->mipmaps = mipmapCount + 1; - RL_FREE(texData); // Once mipmaps have been generated and data has been uploaded to GPU VRAM, we can discard RAM data - - TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Mipmaps generated manually on CPU side, total: %i", texture->id, texture->mipmaps); - } - else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to generate mipmaps for provided texture format", texture->id); - } -#endif -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if ((texIsPOT) || (RLGL.ExtSupported.texNPOT)) - { - //glHint(GL_GENERATE_MIPMAP_HINT, GL_DONT_CARE); // Hint for mipmaps generation algorythm: GL_FASTEST, GL_NICEST, GL_DONT_CARE - glGenerateMipmap(GL_TEXTURE_2D); // Generate mipmaps automatically - - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); // Activate Trilinear filtering for mipmaps - - #define MIN(a,b) (((a)<(b))?(a):(b)) - #define MAX(a,b) (((a)>(b))?(a):(b)) - - texture->mipmaps = 1 + (int)floor(log(MAX(texture->width, texture->height))/log(2)); - TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Mipmaps generated automatically, total: %i", texture->id, texture->mipmaps); - } -#endif - else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to generate mipmaps", texture->id); - - glBindTexture(GL_TEXTURE_2D, 0); -} - - -// Read texture pixel data -void *rlReadTexturePixels(Texture2D texture) -{ - void *pixels = NULL; - -#if defined(GRAPHICS_API_OPENGL_11) || defined(GRAPHICS_API_OPENGL_33) - glBindTexture(GL_TEXTURE_2D, texture.id); - - // NOTE: Using texture.id, we can retrieve some texture info (but not on OpenGL ES 2.0) - // Possible texture info: GL_TEXTURE_RED_SIZE, GL_TEXTURE_GREEN_SIZE, GL_TEXTURE_BLUE_SIZE, GL_TEXTURE_ALPHA_SIZE - //int width, height, format; - //glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &width); - //glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &height); - //glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &format); - - // NOTE: Each row written to or read from by OpenGL pixel operations like glGetTexImage are aligned to a 4 byte boundary by default, which may add some padding. - // Use glPixelStorei to modify padding with the GL_[UN]PACK_ALIGNMENT setting. - // GL_PACK_ALIGNMENT affects operations that read from OpenGL memory (glReadPixels, glGetTexImage, etc.) - // GL_UNPACK_ALIGNMENT affects operations that write to OpenGL memory (glTexImage, etc.) - glPixelStorei(GL_PACK_ALIGNMENT, 1); - - unsigned int glInternalFormat, glFormat, glType; - rlGetGlTextureFormats(texture.format, &glInternalFormat, &glFormat, &glType); - unsigned int size = rlGetPixelDataSize(texture.width, texture.height, texture.format); - - if ((glInternalFormat != -1) && (texture.format < PIXELFORMAT_COMPRESSED_DXT1_RGB)) - { - pixels = RL_MALLOC(size); - glGetTexImage(GL_TEXTURE_2D, 0, glFormat, glType, pixels); - } - else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Data retrieval not suported for pixel format (%i)", texture.id, texture.format); - - glBindTexture(GL_TEXTURE_2D, 0); -#endif - -#if defined(GRAPHICS_API_OPENGL_ES2) - // glGetTexImage() is not available on OpenGL ES 2.0 - // Texture width and height are required on OpenGL ES 2.0. There is no way to get it from texture id. - // Two possible Options: - // 1 - Bind texture to color fbo attachment and glReadPixels() - // 2 - Create an fbo, activate it, render quad with texture, glReadPixels() - // We are using Option 1, just need to care for texture format on retrieval - // NOTE: This behaviour could be conditioned by graphic driver... - unsigned int fboId = rlLoadFramebuffer(texture.width, texture.height); - - // TODO: Create depth texture/renderbuffer for fbo? - - glBindFramebuffer(GL_FRAMEBUFFER, fboId); - glBindTexture(GL_TEXTURE_2D, 0); - - // Attach our texture to FBO - glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.id, 0); - - // We read data as RGBA because FBO texture is configured as RGBA, despite binding another texture format - pixels = (unsigned char *)RL_MALLOC(rlGetPixelDataSize(texture.width, texture.height, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8)); - glReadPixels(0, 0, texture.width, texture.height, GL_RGBA, GL_UNSIGNED_BYTE, pixels); - - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - // Clean up temporal fbo - rlUnloadFramebuffer(fboId); -#endif - - return pixels; -} - - -// Read screen pixel data (color buffer) -unsigned char *rlReadScreenPixels(int width, int height) -{ - unsigned char *screenData = (unsigned char *)RL_CALLOC(width*height*4, sizeof(unsigned char)); - - // NOTE 1: glReadPixels returns image flipped vertically -> (0,0) is the bottom left corner of the framebuffer - // NOTE 2: We are getting alpha channel! Be careful, it can be transparent if not cleared properly! - glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, screenData); - - // Flip image vertically! - unsigned char *imgData = (unsigned char *)RL_MALLOC(width*height*4*sizeof(unsigned char)); - - for (int y = height - 1; y >= 0; y--) - { - for (int x = 0; x < (width*4); x++) - { - imgData[((height - 1) - y)*width*4 + x] = screenData[(y*width*4) + x]; // Flip line - - // Set alpha component value to 255 (no trasparent image retrieval) - // NOTE: Alpha value has already been applied to RGB in framebuffer, we don't need it! - if (((x + 1)%4) == 0) imgData[((height - 1) - y)*width*4 + x] = 255; - } - } - - RL_FREE(screenData); - - return imgData; // NOTE: image data should be freed -} - -// Framebuffer management (fbo) -//----------------------------------------------------------------------------------------- -// Load a framebuffer to be used for rendering -// NOTE: No textures attached -unsigned int rlLoadFramebuffer(int width, int height) -{ - unsigned int fboId = 0; - -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) && defined(SUPPORT_RENDER_TEXTURES_HINT) - glGenFramebuffers(1, &fboId); // Create the framebuffer object - glBindFramebuffer(GL_FRAMEBUFFER, 0); // Unbind any framebuffer -#endif - - return fboId; -} - -// Attach color buffer texture to an fbo (unloads previous attachment) -// NOTE: Attach type: 0-Color, 1-Depth renderbuffer, 2-Depth texture -void rlFramebufferAttach(unsigned int fboId, unsigned int texId, int attachType, int texType, int mipLevel) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) && defined(SUPPORT_RENDER_TEXTURES_HINT) - glBindFramebuffer(GL_FRAMEBUFFER, fboId); - - switch (attachType) - { - case RL_ATTACHMENT_COLOR_CHANNEL0: - case RL_ATTACHMENT_COLOR_CHANNEL1: - case RL_ATTACHMENT_COLOR_CHANNEL2: - case RL_ATTACHMENT_COLOR_CHANNEL3: - case RL_ATTACHMENT_COLOR_CHANNEL4: - case RL_ATTACHMENT_COLOR_CHANNEL5: - case RL_ATTACHMENT_COLOR_CHANNEL6: - case RL_ATTACHMENT_COLOR_CHANNEL7: - { - if (texType == RL_ATTACHMENT_TEXTURE2D) glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + attachType, GL_TEXTURE_2D, texId, mipLevel); - else if (texType == RL_ATTACHMENT_RENDERBUFFER) glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + attachType, GL_RENDERBUFFER, texId); - else if (texType >= RL_ATTACHMENT_CUBEMAP_POSITIVE_X) glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + attachType, GL_TEXTURE_CUBE_MAP_POSITIVE_X + texType, texId, mipLevel); - - } break; - case RL_ATTACHMENT_DEPTH: - { - if (texType == RL_ATTACHMENT_TEXTURE2D) glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, texId, mipLevel); - else if (texType == RL_ATTACHMENT_RENDERBUFFER) glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, texId); - - } break; - case RL_ATTACHMENT_STENCIL: - { - if (texType == RL_ATTACHMENT_TEXTURE2D) glFramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, texId, mipLevel); - else if (texType == RL_ATTACHMENT_RENDERBUFFER) glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, texId); - - } break; - default: break; - } - - glBindFramebuffer(GL_FRAMEBUFFER, 0); -#endif -} - -// Verify render texture is complete -bool rlFramebufferComplete(unsigned int id) -{ - bool result = false; - -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) && defined(SUPPORT_RENDER_TEXTURES_HINT) - glBindFramebuffer(GL_FRAMEBUFFER, id); - - GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER); - - if (status != GL_FRAMEBUFFER_COMPLETE) - { - switch (status) - { - case GL_FRAMEBUFFER_UNSUPPORTED: TRACELOG(LOG_WARNING, "FBO: [ID %i] Framebuffer is unsupported", id); break; - case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: TRACELOG(LOG_WARNING, "FBO: [ID %i] Framebuffer has incomplete attachment", id); break; -#if defined(GRAPHICS_API_OPENGL_ES2) - case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS: TRACELOG(LOG_WARNING, "FBO: [ID %i] Framebuffer has incomplete dimensions", id); break; -#endif - case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: TRACELOG(LOG_WARNING, "FBO: [ID %i] Framebuffer has a missing attachment", id); break; - default: break; - } - } - - glBindFramebuffer(GL_FRAMEBUFFER, 0); - - result = (status == GL_FRAMEBUFFER_COMPLETE); -#endif - - return result; -} - -// Unload framebuffer from GPU memory -// NOTE: All attached textures/cubemaps/renderbuffers are also deleted -void rlUnloadFramebuffer(unsigned int id) -{ -#if (defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2)) && defined(SUPPORT_RENDER_TEXTURES_HINT) - - // Query depth attachment to automatically delete texture/renderbuffer - int depthType = 0, depthId = 0; - glBindFramebuffer(GL_FRAMEBUFFER, id); // Bind framebuffer to query depth texture type - glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, &depthType); - glGetFramebufferAttachmentParameteriv(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, &depthId); - - unsigned int depthIdU = (unsigned int)depthId; - if (depthType == GL_RENDERBUFFER) glDeleteRenderbuffers(1, &depthIdU); - else if (depthType == GL_RENDERBUFFER) glDeleteTextures(1, &depthIdU); - - // NOTE: If a texture object is deleted while its image is attached to the *currently bound* framebuffer, - // the texture image is automatically detached from the currently bound framebuffer. - - glBindFramebuffer(GL_FRAMEBUFFER, 0); - glDeleteFramebuffers(1, &id); - - TRACELOG(LOG_INFO, "FBO: [ID %i] Unloaded framebuffer from VRAM (GPU)", id); -#endif -} - -// Vertex data management -//----------------------------------------------------------------------------------------- -// Load a new attributes buffer -unsigned int rlLoadVertexBuffer(void *buffer, int size, bool dynamic) -{ - unsigned int id = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glGenBuffers(1, &id); - glBindBuffer(GL_ARRAY_BUFFER, id); - glBufferData(GL_ARRAY_BUFFER, size, buffer, dynamic? GL_DYNAMIC_DRAW : GL_STATIC_DRAW); -#endif - - return id; -} - -// Load a new attributes element buffer -unsigned int rlLoadVertexBufferElement(void *buffer, int size, bool dynamic) -{ - unsigned int id = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glGenBuffers(1, &id); - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, size, buffer, dynamic? GL_DYNAMIC_DRAW : GL_STATIC_DRAW); -#endif - - return id; -} - -void rlEnableVertexBuffer(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindBuffer(GL_ARRAY_BUFFER, id); -#endif -} - -void rlDisableVertexBuffer(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindBuffer(GL_ARRAY_BUFFER, 0); -#endif -} - -void rlEnableVertexBufferElement(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, id); -#endif -} - -void rlDisableVertexBufferElement(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); -#endif -} - -// Update GPU buffer with new data -// NOTE: dataSize and offset must be provided in bytes -void rlUpdateVertexBuffer(int bufferId, void *data, int dataSize, int offset) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glBindBuffer(GL_ARRAY_BUFFER, bufferId); - glBufferSubData(GL_ARRAY_BUFFER, offset, dataSize, data); -#endif -} - -bool rlEnableVertexArray(unsigned int vaoId) -{ - bool result = false; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.ExtSupported.vao) - { - glBindVertexArray(vaoId); - result = true; - } -#endif - return result; -} - -void rlDisableVertexArray(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.ExtSupported.vao) glBindVertexArray(0); -#endif -} - -void rlEnableVertexAttribute(unsigned int index) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glEnableVertexAttribArray(index); -#endif -} - -void rlDisableVertexAttribute(unsigned int index) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glDisableVertexAttribArray(index); -#endif -} - -void rlDrawVertexArray(int offset, int count) -{ - glDrawArrays(GL_TRIANGLES, offset, count); -} - -void rlDrawVertexArrayElements(int offset, int count, void *buffer) -{ - glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (unsigned short*)buffer + offset); -} - -void rlDrawVertexArrayInstanced(int offset, int count, int instances) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glDrawArraysInstanced(GL_TRIANGLES, 0, count, instances); -#endif -} - -void rlDrawVertexArrayElementsInstanced(int offset, int count, void *buffer, int instances) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glDrawElementsInstanced(GL_TRIANGLES, count, GL_UNSIGNED_SHORT, (unsigned short*)buffer + offset, instances); -#endif -} - -#if defined(GRAPHICS_API_OPENGL_11) -void rlEnableStatePointer(int vertexAttribType, void *buffer) -{ - if (buffer != NULL) glEnableClientState(vertexAttribType); - switch (vertexAttribType) - { - case GL_VERTEX_ARRAY: glVertexPointer(3, GL_FLOAT, 0, buffer); break; - case GL_TEXTURE_COORD_ARRAY: glTexCoordPointer(2, GL_FLOAT, 0, buffer); break; - case GL_NORMAL_ARRAY: if (buffer != NULL) glNormalPointer(GL_FLOAT, 0, buffer); break; - case GL_COLOR_ARRAY: if (buffer != NULL) glColorPointer(4, GL_UNSIGNED_BYTE, 0, buffer); break; - //case GL_INDEX_ARRAY: if (buffer != NULL) glIndexPointer(GL_SHORT, 0, buffer); break; // Indexed colors - default: break; - } -} - -void rlDisableStatePointer(int vertexAttribType) -{ - glDisableClientState(vertexAttribType); -} -#endif - -unsigned int rlLoadVertexArray(void) -{ - unsigned int vaoId = 0; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glGenVertexArrays(1, &vaoId); -#endif - return vaoId; -} - -void rlSetVertexAttribute(unsigned int index, int compSize, int type, bool normalized, int stride, void *pointer) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glVertexAttribPointer(index, compSize, type, normalized, stride, pointer); -#endif -} - -void rlSetVertexAttributeDivisor(unsigned int index, int divisor) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glVertexAttribDivisor(index, divisor); -#endif -} - -void rlUnloadVertexArray(unsigned int vaoId) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.ExtSupported.vao) - { - glBindVertexArray(0); - glDeleteVertexArrays(1, &vaoId); - TRACELOG(LOG_INFO, "VAO: [ID %i] Unloaded vertex array data from VRAM (GPU)", vaoId); - } -#endif -} - -void rlUnloadVertexBuffer(unsigned int vboId) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glDeleteBuffers(1, &vboId); - //TRACELOG(LOG_INFO, "VBO: Unloaded vertex data from VRAM (GPU)"); -#endif -} - -// Shaders management -//----------------------------------------------------------------------------------------------- -// Load shader from code strings -// NOTE: If shader string is NULL, using default vertex/fragment shaders -unsigned int rlLoadShaderCode(const char *vsCode, const char *fsCode) -{ - unsigned int id = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - unsigned int vertexShaderId = RLGL.State.defaultVShaderId; - unsigned int fragmentShaderId = RLGL.State.defaultFShaderId; - - if (vsCode != NULL) vertexShaderId = rlCompileShader(vsCode, GL_VERTEX_SHADER); - if (fsCode != NULL) fragmentShaderId = rlCompileShader(fsCode, GL_FRAGMENT_SHADER); - - if ((vertexShaderId == RLGL.State.defaultVShaderId) && (fragmentShaderId == RLGL.State.defaultFShaderId)) id = RLGL.State.defaultShader.id; - else - { - id = rlLoadShaderProgram(vertexShaderId, fragmentShaderId); - - if (vertexShaderId != RLGL.State.defaultVShaderId) - { - // Detach shader before deletion to make sure memory is freed - glDetachShader(id, vertexShaderId); - glDeleteShader(vertexShaderId); - } - if (fragmentShaderId != RLGL.State.defaultFShaderId) - { - // Detach shader before deletion to make sure memory is freed - glDetachShader(id, fragmentShaderId); - glDeleteShader(fragmentShaderId); - } - - if (id == 0) - { - TRACELOG(LOG_WARNING, "SHADER: Failed to load custom shader code"); - id = RLGL.State.defaultShader.id; - } - } - - // Get available shader uniforms - // NOTE: This information is useful for debug... - int uniformCount = -1; - - glGetProgramiv(id, GL_ACTIVE_UNIFORMS, &uniformCount); - - for (int i = 0; i < uniformCount; i++) - { - int namelen = -1; - int num = -1; - char name[256]; // Assume no variable names longer than 256 - GLenum type = GL_ZERO; - - // Get the name of the uniforms - glGetActiveUniform(id, i, sizeof(name) - 1, &namelen, &num, &type, name); - - name[namelen] = 0; - - TRACELOGD("SHADER: [ID %i] Active uniform (%s) set at location: %i", id, name, glGetUniformLocation(id, name)); - } -#endif - - return id; -} - -// Compile custom shader and return shader id -unsigned int rlCompileShader(const char *shaderCode, int type) -{ - unsigned int shader = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - shader = glCreateShader(type); - glShaderSource(shader, 1, &shaderCode, NULL); - - GLint success = 0; - glCompileShader(shader); - glGetShaderiv(shader, GL_COMPILE_STATUS, &success); - - if (success == GL_FALSE) - { - switch (type) - { - case GL_VERTEX_SHADER: TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to compile vertex shader code", shader); break; - case GL_FRAGMENT_SHADER: TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to compile fragment shader code", shader); break; - //case GL_GEOMETRY_SHADER: - //case GL_COMPUTE_SHADER: - default: break; - } - - int maxLength = 0; - glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &maxLength); - - if (maxLength > 0) - { - int length = 0; - char *log = RL_CALLOC(maxLength, sizeof(char)); - glGetShaderInfoLog(shader, maxLength, &length, log); - TRACELOG(LOG_WARNING, "SHADER: [ID %i] Compile error: %s", shader, log); - RL_FREE(log); - } - } - else - { - switch (type) - { - case GL_VERTEX_SHADER: TRACELOG(LOG_INFO, "SHADER: [ID %i] Vertex shader compiled successfully", shader); break; - case GL_FRAGMENT_SHADER: TRACELOG(LOG_INFO, "SHADER: [ID %i] Fragment shader compiled successfully", shader); break; - //case GL_GEOMETRY_SHADER: - //case GL_COMPUTE_SHADER: - default: break; - } - } -#endif - - return shader; -} - -// Load custom shader strings and return program id -unsigned int rlLoadShaderProgram(unsigned int vShaderId, unsigned int fShaderId) -{ - unsigned int program = 0; - -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - GLint success = 0; - program = glCreateProgram(); - - glAttachShader(program, vShaderId); - glAttachShader(program, fShaderId); - - // NOTE: Default attribute shader locations must be binded before linking - glBindAttribLocation(program, 0, DEFAULT_SHADER_ATTRIB_NAME_POSITION); - glBindAttribLocation(program, 1, DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD); - glBindAttribLocation(program, 2, DEFAULT_SHADER_ATTRIB_NAME_NORMAL); - glBindAttribLocation(program, 3, DEFAULT_SHADER_ATTRIB_NAME_COLOR); - glBindAttribLocation(program, 4, DEFAULT_SHADER_ATTRIB_NAME_TANGENT); - glBindAttribLocation(program, 5, DEFAULT_SHADER_ATTRIB_NAME_TEXCOORD2); - - // NOTE: If some attrib name is no found on the shader, it locations becomes -1 - - glLinkProgram(program); - - // NOTE: All uniform variables are intitialised to 0 when a program links - - glGetProgramiv(program, GL_LINK_STATUS, &success); - - if (success == GL_FALSE) - { - TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to link shader program", program); - - int maxLength = 0; - glGetProgramiv(program, GL_INFO_LOG_LENGTH, &maxLength); - - if (maxLength > 0) - { - int length = 0; - char *log = RL_CALLOC(maxLength, sizeof(char)); - glGetProgramInfoLog(program, maxLength, &length, log); - TRACELOG(LOG_WARNING, "SHADER: [ID %i] Link error: %s", program, log); - RL_FREE(log); - } - - glDeleteProgram(program); - - program = 0; - } - else TRACELOG(LOG_INFO, "SHADER: [ID %i] Program shader loaded successfully", program); -#endif - return program; -} - -// Unload shader program -void rlUnloadShaderProgram(unsigned int id) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glDeleteProgram(id); - - TRACELOG(LOG_INFO, "SHADER: [ID %i] Unloaded shader program data from VRAM (GPU)", id); -#endif -} - -// Get shader location uniform -int rlGetLocationUniform(unsigned int shaderId, const char *uniformName) -{ - int location = -1; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - location = glGetUniformLocation(shaderId, uniformName); - - if (location == -1) TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to find shader uniform: %s", shaderId, uniformName); - else TRACELOG(LOG_INFO, "SHADER: [ID %i] Shader uniform (%s) set at location: %i", shaderId, uniformName, location); -#endif - return location; -} - -// Get shader location attribute -int rlGetLocationAttrib(unsigned int shaderId, const char *attribName) -{ - int location = -1; -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - location = glGetAttribLocation(shaderId, attribName); - - if (location == -1) TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to find shader attribute: %s", shaderId, attribName); - else TRACELOG(LOG_INFO, "SHADER: [ID %i] Shader attribute (%s) set at location: %i", shaderId, attribName, location); -#endif - return location; -} - -// Set shader value uniform -void rlSetUniform(int locIndex, const void *value, int uniformType, int count) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - switch (uniformType) - { - case SHADER_UNIFORM_FLOAT: glUniform1fv(locIndex, count, (float *)value); break; - case SHADER_UNIFORM_VEC2: glUniform2fv(locIndex, count, (float *)value); break; - case SHADER_UNIFORM_VEC3: glUniform3fv(locIndex, count, (float *)value); break; - case SHADER_UNIFORM_VEC4: glUniform4fv(locIndex, count, (float *)value); break; - case SHADER_UNIFORM_INT: glUniform1iv(locIndex, count, (int *)value); break; - case SHADER_UNIFORM_IVEC2: glUniform2iv(locIndex, count, (int *)value); break; - case SHADER_UNIFORM_IVEC3: glUniform3iv(locIndex, count, (int *)value); break; - case SHADER_UNIFORM_IVEC4: glUniform4iv(locIndex, count, (int *)value); break; - case SHADER_UNIFORM_SAMPLER2D: glUniform1iv(locIndex, count, (int *)value); break; - default: TRACELOG(LOG_WARNING, "SHADER: Failed to set uniform value, data type not recognized"); - } -#endif -} - -// Set shader value attribute -void rlSetVertexAttributeDefault(int locIndex, const void *value, int attribType, int count) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - switch (attribType) - { - case SHADER_ATTRIB_FLOAT: if (count == 1) glVertexAttrib1fv(locIndex, (float *)value); break; - case SHADER_ATTRIB_VEC2: if (count == 2) glVertexAttrib2fv(locIndex, (float *)value); break; - case SHADER_ATTRIB_VEC3: if (count == 3) glVertexAttrib3fv(locIndex, (float *)value); break; - case SHADER_ATTRIB_VEC4: if (count == 4) glVertexAttrib4fv(locIndex, (float *)value); break; - default: TRACELOG(LOG_WARNING, "SHADER: Failed to set attrib default value, data type not recognized"); - } -#endif -} - -// Set shader value uniform matrix -void rlSetUniformMatrix(int locIndex, Matrix mat) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - glUniformMatrix4fv(locIndex, 1, false, MatrixToFloat(mat)); -#endif -} - -// Set shader value uniform sampler -void rlSetUniformSampler(int locIndex, unsigned int textureId) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // Check if texture is already active - for (int i = 0; i < MAX_BATCH_ACTIVE_TEXTURES; i++) if (RLGL.State.activeTextureId[i] == textureId) return; - - // Register a new active texture for the internal batch system - // NOTE: Default texture is always activated as GL_TEXTURE0 - for (int i = 0; i < MAX_BATCH_ACTIVE_TEXTURES; i++) - { - if (RLGL.State.activeTextureId[i] == 0) - { - glUniform1i(locIndex, 1 + i); // Activate new texture unit - RLGL.State.activeTextureId[i] = textureId; // Save texture id for binding on drawing - break; - } - } -#endif -} - -// Set shader currently active -void rlSetShader(Shader shader) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - if (RLGL.State.currentShader.id != shader.id) - { - rlDrawRenderBatch(RLGL.currentBatch); - RLGL.State.currentShader = shader; - } -#endif -} - -// Matrix state management -//----------------------------------------------------------------------------------------- -// Return internal modelview matrix -Matrix rlGetMatrixModelview(void) -{ - Matrix matrix = MatrixIdentity(); -#if defined(GRAPHICS_API_OPENGL_11) - float mat[16]; - glGetFloatv(GL_MODELVIEW_MATRIX, mat); - matrix.m0 = mat[0]; matrix.m1 = mat[1]; matrix.m2 = mat[2]; matrix.m3 = mat[3]; - matrix.m4 = mat[4]; matrix.m5 = mat[5]; matrix.m6 = mat[6]; matrix.m7 = mat[7]; - matrix.m8 = mat[8]; matrix.m9 = mat[9]; matrix.m10 = mat[10]; matrix.m11 = mat[11]; - matrix.m12 = mat[12]; matrix.m13 = mat[13]; matrix.m14 = mat[14]; matrix.m15 = mat[15]; -#else - matrix = RLGL.State.modelview; -#endif - return matrix; -} - -// Return internal projection matrix -Matrix rlGetMatrixProjection(void) -{ -#if defined(GRAPHICS_API_OPENGL_11) - float mat[16]; - glGetFloatv(GL_PROJECTION_MATRIX,mat); - Matrix m; - m.m0 = mat[0]; m.m1 = mat[1]; m.m2 = mat[2]; m.m3 = mat[3]; - m.m4 = mat[4]; m.m5 = mat[5]; m.m6 = mat[6]; m.m7 = mat[7]; - m.m8 = mat[8]; m.m9 = mat[9]; m.m10 = mat[10]; m.m11 = mat[11]; - m.m12 = mat[12]; m.m13 = mat[13]; m.m14 = mat[14]; m.m15 = mat[15]; - return m; -#else - return RLGL.State.projection; -#endif -} - -// Get internal accumulated transform matrix -Matrix rlGetMatrixTransform(void) -{ - Matrix mat = MatrixIdentity(); -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - // TODO: Consider possible transform matrices in the RLGL.State.stack - // Is this the right order? or should we start with the first stored matrix instead of the last one? - //Matrix matStackTransform = MatrixIdentity(); - //for (int i = RLGL.State.stackCounter; i > 0; i--) matStackTransform = MatrixMultiply(RLGL.State.stack[i], matStackTransform); - mat = RLGL.State.transform; -#endif - return mat; -} - -// Get internal projection matrix for stereo render (selected eye) -RLAPI Matrix rlGetMatrixProjectionStereo(int eye) -{ - Matrix mat = MatrixIdentity(); -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - mat = RLGL.State.projectionStereo[eye]; -#endif - return mat; -} - -// Get internal view offset matrix for stereo render (selected eye) -RLAPI Matrix rlGetMatrixViewOffsetStereo(int eye) -{ - Matrix mat = MatrixIdentity(); -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - mat = RLGL.State.viewOffsetStereo[eye]; -#endif - return mat; -} - -// Set a custom modelview matrix (replaces internal modelview matrix) -void rlSetMatrixModelview(Matrix view) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - RLGL.State.modelview = view; -#endif -} - -// Set a custom projection matrix (replaces internal projection matrix) -void rlSetMatrixProjection(Matrix projection) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - RLGL.State.projection = projection; -#endif -} - -// Set eyes projection matrices for stereo rendering -void rlSetMatrixProjectionStereo(Matrix right, Matrix left) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - RLGL.State.projectionStereo[0] = right; - RLGL.State.projectionStereo[1] = left; -#endif -} - -// Set eyes view offsets matrices for stereo rendering -void rlSetMatrixViewOffsetStereo(Matrix right, Matrix left) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - RLGL.State.viewOffsetStereo[0] = right; - RLGL.State.viewOffsetStereo[1] = left; -#endif -} - -// Load and draw a 1x1 XY quad in NDC -void rlLoadDrawQuad(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - unsigned int quadVAO = 0; - unsigned int quadVBO = 0; - - float vertices[] = { - // Positions Texcoords - -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, - 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, - 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, - }; - - // Gen VAO to contain VBO - glGenVertexArrays(1, &quadVAO); - glBindVertexArray(quadVAO); - - // Gen and fill vertex buffer (VBO) - glGenBuffers(1, &quadVBO); - glBindBuffer(GL_ARRAY_BUFFER, quadVBO); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), &vertices, GL_STATIC_DRAW); - - // Bind vertex attributes (position, texcoords) - glEnableVertexAttribArray(0); - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5*sizeof(float), (void *)0); // Positions - glEnableVertexAttribArray(1); - glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5*sizeof(float), (void *)(3*sizeof(float))); // Texcoords - - // Draw quad - glBindVertexArray(quadVAO); - glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); - glBindVertexArray(0); - - // Delete buffers (VBO and VAO) - glDeleteBuffers(1, &quadVBO); - glDeleteVertexArrays(1, &quadVAO); -#endif -} - -// Load and draw a 1x1 3D cube in NDC -void rlLoadDrawCube(void) -{ -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) - unsigned int cubeVAO = 0; - unsigned int cubeVBO = 0; - - float vertices[] = { - // Positions Normals Texcoords - -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, - 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, - 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, - 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, - -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, - -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, - 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, - -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, - -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - -1.0f, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f, - -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - -1.0f, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - -1.0f, -1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f, - -1.0f, 1.0f, 1.0f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - 1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, - 1.0f, -1.0f, -1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, - 1.0f, -1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, - -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, - 1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f, - 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, - 1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f, - -1.0f, -1.0f, 1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, - -1.0f, -1.0f, -1.0f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, - -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, - 1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, - 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, - -1.0f, 1.0f, -1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, - -1.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f - }; - - // Gen VAO to contain VBO - glGenVertexArrays(1, &cubeVAO); - glBindVertexArray(cubeVAO); - - // Gen and fill vertex buffer (VBO) - glGenBuffers(1, &cubeVBO); - glBindBuffer(GL_ARRAY_BUFFER, cubeVBO); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - // Bind vertex attributes (position, normals, texcoords) - glBindVertexArray(cubeVAO); - glEnableVertexAttribArray(0); - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)0); // Positions - glEnableVertexAttribArray(1); - glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)(3*sizeof(float))); // Normals - glEnableVertexAttribArray(2); - glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8*sizeof(float), (void *)(6*sizeof(float))); // Texcoords - glBindBuffer(GL_ARRAY_BUFFER, 0); - glBindVertexArray(0); - - // Draw cube - glBindVertexArray(cubeVAO); - glDrawArrays(GL_TRIANGLES, 0, 36); - glBindVertexArray(0); - - // Delete VBO and VAO - glDeleteBuffers(1, &cubeVBO); - glDeleteVertexArrays(1, &cubeVAO); -#endif -} - -//---------------------------------------------------------------------------------- -// Module specific Functions Definition -//---------------------------------------------------------------------------------- -#if defined(GRAPHICS_API_OPENGL_33) || defined(GRAPHICS_API_OPENGL_ES2) -// Load default shader (just vertex positioning and texture coloring) -// NOTE: This shader program is used for internal buffers -// NOTE: It uses global variable: RLGL.State.defaultShader -static void rlLoadShaderDefault(void) -{ - RLGL.State.defaultShader.locs = (int *)RL_CALLOC(MAX_SHADER_LOCATIONS, sizeof(int)); - - // NOTE: All locations must be reseted to -1 (no location) - for (int i = 0; i < MAX_SHADER_LOCATIONS; i++) RLGL.State.defaultShader.locs[i] = -1; - - // Vertex shader directly defined, no external file required - const char *vShaderDefault = -#if defined(GRAPHICS_API_OPENGL_21) - "#version 120 \n" - "attribute vec3 vertexPosition; \n" - "attribute vec2 vertexTexCoord; \n" - "attribute vec4 vertexColor; \n" - "varying vec2 fragTexCoord; \n" - "varying vec4 fragColor; \n" -#elif defined(GRAPHICS_API_OPENGL_33) - "#version 330 \n" - "in vec3 vertexPosition; \n" - "in vec2 vertexTexCoord; \n" - "in vec4 vertexColor; \n" - "out vec2 fragTexCoord; \n" - "out vec4 fragColor; \n" -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - "#version 100 \n" - "attribute vec3 vertexPosition; \n" - "attribute vec2 vertexTexCoord; \n" - "attribute vec4 vertexColor; \n" - "varying vec2 fragTexCoord; \n" - "varying vec4 fragColor; \n" -#endif - "uniform mat4 mvp; \n" - "void main() \n" - "{ \n" - " fragTexCoord = vertexTexCoord; \n" - " fragColor = vertexColor; \n" - " gl_Position = mvp*vec4(vertexPosition, 1.0); \n" - "} \n"; - - // Fragment shader directly defined, no external file required - const char *fShaderDefault = -#if defined(GRAPHICS_API_OPENGL_21) - "#version 120 \n" - "varying vec2 fragTexCoord; \n" - "varying vec4 fragColor; \n" - "uniform sampler2D texture0; \n" - "uniform vec4 colDiffuse; \n" - "void main() \n" - "{ \n" - " vec4 texelColor = texture2D(texture0, fragTexCoord); \n" - " gl_FragColor = texelColor*colDiffuse*fragColor; \n" - "} \n"; -#elif defined(GRAPHICS_API_OPENGL_33) - "#version 330 \n" - "in vec2 fragTexCoord; \n" - "in vec4 fragColor; \n" - "out vec4 finalColor; \n" - "uniform sampler2D texture0; \n" - "uniform vec4 colDiffuse; \n" - "void main() \n" - "{ \n" - " vec4 texelColor = texture(texture0, fragTexCoord); \n" - " finalColor = texelColor*colDiffuse*fragColor; \n" - "} \n"; -#endif -#if defined(GRAPHICS_API_OPENGL_ES2) - "#version 100 \n" - "precision mediump float; \n" // Precision required for OpenGL ES2 (WebGL) - "varying vec2 fragTexCoord; \n" - "varying vec4 fragColor; \n" - "uniform sampler2D texture0; \n" - "uniform vec4 colDiffuse; \n" - "void main() \n" - "{ \n" - " vec4 texelColor = texture2D(texture0, fragTexCoord); \n" - " gl_FragColor = texelColor*colDiffuse*fragColor; \n" - "} \n"; -#endif - - // NOTE: Compiled vertex/fragment shaders are kept for re-use - RLGL.State.defaultVShaderId = rlCompileShader(vShaderDefault, GL_VERTEX_SHADER); // Compile default vertex shader - RLGL.State.defaultFShaderId = rlCompileShader(fShaderDefault, GL_FRAGMENT_SHADER); // Compile default fragment shader - - RLGL.State.defaultShader.id = rlLoadShaderProgram(RLGL.State.defaultVShaderId, RLGL.State.defaultFShaderId); - - if (RLGL.State.defaultShader.id > 0) - { - TRACELOG(LOG_INFO, "SHADER: [ID %i] Default shader loaded successfully", RLGL.State.defaultShader.id); - - // Set default shader locations: attributes locations - RLGL.State.defaultShader.locs[SHADER_LOC_VERTEX_POSITION] = glGetAttribLocation(RLGL.State.defaultShader.id, "vertexPosition"); - RLGL.State.defaultShader.locs[SHADER_LOC_VERTEX_TEXCOORD01] = glGetAttribLocation(RLGL.State.defaultShader.id, "vertexTexCoord"); - RLGL.State.defaultShader.locs[SHADER_LOC_VERTEX_COLOR] = glGetAttribLocation(RLGL.State.defaultShader.id, "vertexColor"); - - // Set default shader locations: uniform locations - RLGL.State.defaultShader.locs[SHADER_LOC_MATRIX_MVP] = glGetUniformLocation(RLGL.State.defaultShader.id, "mvp"); - RLGL.State.defaultShader.locs[SHADER_LOC_COLOR_DIFFUSE] = glGetUniformLocation(RLGL.State.defaultShader.id, "colDiffuse"); - RLGL.State.defaultShader.locs[SHADER_LOC_MAP_DIFFUSE] = glGetUniformLocation(RLGL.State.defaultShader.id, "texture0"); - } - else TRACELOG(LOG_WARNING, "SHADER: [ID %i] Failed to load default shader", RLGL.State.defaultShader.id); -} - -// Unload default shader -// NOTE: It uses global variable: RLGL.State.defaultShader -static void rlUnloadShaderDefault(void) -{ - glUseProgram(0); - - glDetachShader(RLGL.State.defaultShader.id, RLGL.State.defaultVShaderId); - glDetachShader(RLGL.State.defaultShader.id, RLGL.State.defaultFShaderId); - glDeleteShader(RLGL.State.defaultVShaderId); - glDeleteShader(RLGL.State.defaultFShaderId); - - glDeleteProgram(RLGL.State.defaultShader.id); - - RL_FREE(RLGL.State.defaultShader.locs); - - TRACELOG(LOG_INFO, "SHADER: [ID %i] Default shader unloaded successfully", RLGL.State.defaultShader.id); -} - -#if defined(SUPPORT_GL_DETAILS_INFO) -// Get compressed format official GL identifier name -static char *rlGetCompressedFormatName(int format) -{ - static char compName[64] = { 0 }; - memset(compName, 0, 64); - - switch (format) - { - // GL_EXT_texture_compression_s3tc - case 0x83F0: strcpy(compName, "GL_COMPRESSED_RGB_S3TC_DXT1_EXT"); break; - case 0x83F1: strcpy(compName, "GL_COMPRESSED_RGBA_S3TC_DXT1_EXT"); break; - case 0x83F2: strcpy(compName, "GL_COMPRESSED_RGBA_S3TC_DXT3_EXT"); break; - case 0x83F3: strcpy(compName, "GL_COMPRESSED_RGBA_S3TC_DXT5_EXT"); break; - // GL_3DFX_texture_compression_FXT1 - case 0x86B0: strcpy(compName, "GL_COMPRESSED_RGB_FXT1_3DFX"); break; - case 0x86B1: strcpy(compName, "GL_COMPRESSED_RGBA_FXT1_3DFX"); break; - // GL_IMG_texture_compression_pvrtc - case 0x8C00: strcpy(compName, "GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG"); break; - case 0x8C01: strcpy(compName, "GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG"); break; - case 0x8C02: strcpy(compName, "GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG"); break; - case 0x8C03: strcpy(compName, "GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG"); break; - // GL_OES_compressed_ETC1_RGB8_texture - case 0x8D64: strcpy(compName, "GL_ETC1_RGB8_OES"); break; - // GL_ARB_texture_compression_rgtc - case 0x8DBB: strcpy(compName, "GL_COMPRESSED_RED_RGTC1"); break; - case 0x8DBC: strcpy(compName, "GL_COMPRESSED_SIGNED_RED_RGTC1"); break; - case 0x8DBD: strcpy(compName, "GL_COMPRESSED_RG_RGTC2"); break; - case 0x8DBE: strcpy(compName, "GL_COMPRESSED_SIGNED_RG_RGTC2"); break; - // GL_ARB_texture_compression_bptc - case 0x8E8C: strcpy(compName, "GL_COMPRESSED_RGBA_BPTC_UNORM_ARB"); break; - case 0x8E8D: strcpy(compName, "GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM_ARB"); break; - case 0x8E8E: strcpy(compName, "GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT_ARB"); break; - case 0x8E8F: strcpy(compName, "GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_ARB"); break; - // GL_ARB_ES3_compatibility - case 0x9274: strcpy(compName, "GL_COMPRESSED_RGB8_ETC2"); break; - case 0x9275: strcpy(compName, "GL_COMPRESSED_SRGB8_ETC2"); break; - case 0x9276: strcpy(compName, "GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2"); break; - case 0x9277: strcpy(compName, "GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2"); break; - case 0x9278: strcpy(compName, "GL_COMPRESSED_RGBA8_ETC2_EAC"); break; - case 0x9279: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC"); break; - case 0x9270: strcpy(compName, "GL_COMPRESSED_R11_EAC"); break; - case 0x9271: strcpy(compName, "GL_COMPRESSED_SIGNED_R11_EAC"); break; - case 0x9272: strcpy(compName, "GL_COMPRESSED_RG11_EAC"); break; - case 0x9273: strcpy(compName, "GL_COMPRESSED_SIGNED_RG11_EAC"); break; - // GL_KHR_texture_compression_astc_hdr - case 0x93B0: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_4x4_KHR"); break; - case 0x93B1: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_5x4_KHR"); break; - case 0x93B2: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_5x5_KHR"); break; - case 0x93B3: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_6x5_KHR"); break; - case 0x93B4: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_6x6_KHR"); break; - case 0x93B5: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_8x5_KHR"); break; - case 0x93B6: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_8x6_KHR"); break; - case 0x93B7: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_8x8_KHR"); break; - case 0x93B8: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_10x5_KHR"); break; - case 0x93B9: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_10x6_KHR"); break; - case 0x93BA: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_10x8_KHR"); break; - case 0x93BB: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_10x10_KHR"); break; - case 0x93BC: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_12x10_KHR"); break; - case 0x93BD: strcpy(compName, "GL_COMPRESSED_RGBA_ASTC_12x12_KHR"); break; - case 0x93D0: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR"); break; - case 0x93D1: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR"); break; - case 0x93D2: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR"); break; - case 0x93D3: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR"); break; - case 0x93D4: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR"); break; - case 0x93D5: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR"); break; - case 0x93D6: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR"); break; - case 0x93D7: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR"); break; - case 0x93D8: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR"); break; - case 0x93D9: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR"); break; - case 0x93DA: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR"); break; - case 0x93DB: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR"); break; - case 0x93DC: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR"); break; - case 0x93DD: strcpy(compName, "GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR"); break; - default: strcpy(compName, "GL_COMPRESSED_UNKNOWN"); break; - } - - return compName; -} -#endif // SUPPORT_GL_DETAILS_INFO - -#endif // GRAPHICS_API_OPENGL_33 || GRAPHICS_API_OPENGL_ES2 - -#if defined(GRAPHICS_API_OPENGL_11) -// Mipmaps data is generated after image data -// NOTE: Only works with RGBA (4 bytes) data! -static int rlGenerateMipmapsData(unsigned char *data, int baseWidth, int baseHeight) -{ - int mipmapCount = 1; // Required mipmap levels count (including base level) - int width = baseWidth; - int height = baseHeight; - int size = baseWidth*baseHeight*4; // Size in bytes (will include mipmaps...), RGBA only - - // Count mipmap levels required - while ((width != 1) && (height != 1)) - { - width /= 2; - height /= 2; - - TRACELOGD("TEXTURE: Next mipmap size: %i x %i", width, height); - - mipmapCount++; - - size += (width*height*4); // Add mipmap size (in bytes) - } - - TRACELOGD("TEXTURE: Total mipmaps required: %i", mipmapCount); - TRACELOGD("TEXTURE: Total size of data required: %i", size); - - unsigned char *temp = RL_REALLOC(data, size); - - if (temp != NULL) data = temp; - else TRACELOG(LOG_WARNING, "TEXTURE: Failed to re-allocate required mipmaps memory"); - - width = baseWidth; - height = baseHeight; - size = (width*height*4); - - // Generate mipmaps - // NOTE: Every mipmap data is stored after data - Color *image = (Color *)RL_MALLOC(width*height*sizeof(Color)); - Color *mipmap = NULL; - int offset = 0; - int j = 0; - - for (int i = 0; i < size; i += 4) - { - image[j].r = data[i]; - image[j].g = data[i + 1]; - image[j].b = data[i + 2]; - image[j].a = data[i + 3]; - j++; - } - - TRACELOGD("TEXTURE: Mipmap base size (%ix%i)", width, height); - - for (int mip = 1; mip < mipmapCount; mip++) - { - mipmap = rlGenNextMipmapData(image, width, height); - - offset += (width*height*4); // Size of last mipmap - j = 0; - - width /= 2; - height /= 2; - size = (width*height*4); // Mipmap size to store after offset - - // Add mipmap to data - for (int i = 0; i < size; i += 4) - { - data[offset + i] = mipmap[j].r; - data[offset + i + 1] = mipmap[j].g; - data[offset + i + 2] = mipmap[j].b; - data[offset + i + 3] = mipmap[j].a; - j++; - } - - RL_FREE(image); - - image = mipmap; - mipmap = NULL; - } - - RL_FREE(mipmap); // free mipmap data - - return mipmapCount; -} - -// Manual mipmap generation (basic scaling algorithm) -static Color *rlGenNextMipmapData(Color *srcData, int srcWidth, int srcHeight) -{ - int x2, y2; - Color prow, pcol; - - int width = srcWidth/2; - int height = srcHeight/2; - - Color *mipmap = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - // Scaling algorithm works perfectly (box-filter) - for (int y = 0; y < height; y++) - { - y2 = 2*y; - - for (int x = 0; x < width; x++) - { - x2 = 2*x; - - prow.r = (srcData[y2*srcWidth + x2].r + srcData[y2*srcWidth + x2 + 1].r)/2; - prow.g = (srcData[y2*srcWidth + x2].g + srcData[y2*srcWidth + x2 + 1].g)/2; - prow.b = (srcData[y2*srcWidth + x2].b + srcData[y2*srcWidth + x2 + 1].b)/2; - prow.a = (srcData[y2*srcWidth + x2].a + srcData[y2*srcWidth + x2 + 1].a)/2; - - pcol.r = (srcData[(y2+1)*srcWidth + x2].r + srcData[(y2+1)*srcWidth + x2 + 1].r)/2; - pcol.g = (srcData[(y2+1)*srcWidth + x2].g + srcData[(y2+1)*srcWidth + x2 + 1].g)/2; - pcol.b = (srcData[(y2+1)*srcWidth + x2].b + srcData[(y2+1)*srcWidth + x2 + 1].b)/2; - pcol.a = (srcData[(y2+1)*srcWidth + x2].a + srcData[(y2+1)*srcWidth + x2 + 1].a)/2; - - mipmap[y*width + x].r = (prow.r + pcol.r)/2; - mipmap[y*width + x].g = (prow.g + pcol.g)/2; - mipmap[y*width + x].b = (prow.b + pcol.b)/2; - mipmap[y*width + x].a = (prow.a + pcol.a)/2; - } - } - - TRACELOGD("TEXTURE: Mipmap generated successfully (%ix%i)", width, height); - - return mipmap; -} -#endif // GRAPHICS_API_OPENGL_11 - -// Get pixel data size in bytes (image or texture) -// NOTE: Size depends on pixel format -static int rlGetPixelDataSize(int width, int height, int format) -{ - int dataSize = 0; // Size in bytes - int bpp = 0; // Bits per pixel - - switch (format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: bpp = 8; break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: bpp = 16; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: bpp = 32; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: bpp = 24; break; - case PIXELFORMAT_UNCOMPRESSED_R32: bpp = 32; break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: bpp = 32*3; break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: bpp = 32*4; break; - case PIXELFORMAT_COMPRESSED_DXT1_RGB: - case PIXELFORMAT_COMPRESSED_DXT1_RGBA: - case PIXELFORMAT_COMPRESSED_ETC1_RGB: - case PIXELFORMAT_COMPRESSED_ETC2_RGB: - case PIXELFORMAT_COMPRESSED_PVRT_RGB: - case PIXELFORMAT_COMPRESSED_PVRT_RGBA: bpp = 4; break; - case PIXELFORMAT_COMPRESSED_DXT3_RGBA: - case PIXELFORMAT_COMPRESSED_DXT5_RGBA: - case PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA: - case PIXELFORMAT_COMPRESSED_ASTC_4x4_RGBA: bpp = 8; break; - case PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA: bpp = 2; break; - default: break; - } - - dataSize = width*height*bpp/8; // Total data size in bytes - - // Most compressed formats works on 4x4 blocks, - // if texture is smaller, minimum dataSize is 8 or 16 - if ((width < 4) && (height < 4)) - { - if ((format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) && (format < PIXELFORMAT_COMPRESSED_DXT3_RGBA)) dataSize = 8; - else if ((format >= PIXELFORMAT_COMPRESSED_DXT3_RGBA) && (format < PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA)) dataSize = 16; - } - - return dataSize; -} -#endif // RLGL_IMPLEMENTATION |