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Diffstat (limited to 'libs/raylib/src/textures.c')
| -rw-r--r-- | libs/raylib/src/textures.c | 4588 |
1 files changed, 0 insertions, 4588 deletions
diff --git a/libs/raylib/src/textures.c b/libs/raylib/src/textures.c deleted file mode 100644 index de0d76b..0000000 --- a/libs/raylib/src/textures.c +++ /dev/null @@ -1,4588 +0,0 @@ -/********************************************************************************************** -* -* raylib.textures - Basic functions to load and draw Textures (2d) -* -* CONFIGURATION: -* -* #define SUPPORT_FILEFORMAT_BMP -* #define SUPPORT_FILEFORMAT_PNG -* #define SUPPORT_FILEFORMAT_TGA -* #define SUPPORT_FILEFORMAT_JPG -* #define SUPPORT_FILEFORMAT_GIF -* #define SUPPORT_FILEFORMAT_PSD -* #define SUPPORT_FILEFORMAT_PIC -* #define SUPPORT_FILEFORMAT_HDR -* #define SUPPORT_FILEFORMAT_DDS -* #define SUPPORT_FILEFORMAT_PKM -* #define SUPPORT_FILEFORMAT_KTX -* #define SUPPORT_FILEFORMAT_PVR -* #define SUPPORT_FILEFORMAT_ASTC -* Select desired fileformats to be supported for image data loading. Some of those formats are -* supported by default, to remove support, just comment unrequired #define in this module -* -* #define SUPPORT_IMAGE_EXPORT -* Support image export in multiple file formats -* -* #define SUPPORT_IMAGE_MANIPULATION -* Support multiple image editing functions to scale, adjust colors, flip, draw on images, crop... -* If not defined only three image editing functions supported: ImageFormat(), ImageAlphaMask(), ImageToPOT() -* -* #define SUPPORT_IMAGE_GENERATION -* Support procedural image generation functionality (gradient, spot, perlin-noise, cellular) -* -* DEPENDENCIES: -* stb_image - Multiple image formats loading (JPEG, PNG, BMP, TGA, PSD, GIF, PIC) -* NOTE: stb_image has been slightly modified to support Android platform. -* stb_image_resize - Multiple image resize algorythms -* -* -* LICENSE: zlib/libpng -* -* Copyright (c) 2013-2021 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. -* -**********************************************************************************************/ - -#include "raylib.h" // Declares module functions - -// 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 <stdlib.h> // Required for: malloc(), free() -#include <string.h> // Required for: strlen() [Used in ImageTextEx()] -#include <math.h> // Required for: fabsf() - -#include "utils.h" // Required for: fopen() Android mapping - -#include "rlgl.h" // raylib OpenGL abstraction layer to OpenGL 1.1, 3.3 or ES2 - // Required for: rlLoadTexture() rlUnloadTexture(), - // rlGenerateMipmaps(), some funcs for DrawTexturePro() - -// Support only desired texture formats on stb_image -#if !defined(SUPPORT_FILEFORMAT_BMP) - #define STBI_NO_BMP -#endif -#if !defined(SUPPORT_FILEFORMAT_PNG) - #define STBI_NO_PNG -#endif -#if !defined(SUPPORT_FILEFORMAT_TGA) - #define STBI_NO_TGA -#endif -#if !defined(SUPPORT_FILEFORMAT_JPG) - #define STBI_NO_JPEG // Image format .jpg and .jpeg -#endif -#if !defined(SUPPORT_FILEFORMAT_PSD) - #define STBI_NO_PSD -#endif -#if !defined(SUPPORT_FILEFORMAT_GIF) - #define STBI_NO_GIF -#endif -#if !defined(SUPPORT_FILEFORMAT_PIC) - #define STBI_NO_PIC -#endif -#if !defined(SUPPORT_FILEFORMAT_HDR) - #define STBI_NO_HDR -#endif - -// Image fileformats not supported by default -#define STBI_NO_PIC -#define STBI_NO_PNM // Image format .ppm and .pgm - -#if (defined(SUPPORT_FILEFORMAT_BMP) || \ - defined(SUPPORT_FILEFORMAT_PNG) || \ - defined(SUPPORT_FILEFORMAT_TGA) || \ - defined(SUPPORT_FILEFORMAT_JPG) || \ - defined(SUPPORT_FILEFORMAT_PSD) || \ - defined(SUPPORT_FILEFORMAT_GIF) || \ - defined(SUPPORT_FILEFORMAT_PIC) || \ - defined(SUPPORT_FILEFORMAT_HDR)) - - #define STBI_MALLOC RL_MALLOC - #define STBI_FREE RL_FREE - #define STBI_REALLOC RL_REALLOC - - #define STB_IMAGE_IMPLEMENTATION - #include "external/stb_image.h" // Required for: stbi_load_from_file() - // NOTE: Used to read image data (multiple formats support) -#endif - -#if (defined(SUPPORT_IMAGE_EXPORT) || defined(SUPPORT_COMPRESSION_API)) - #define STBIW_MALLOC RL_MALLOC - #define STBIW_FREE RL_FREE - #define STBIW_REALLOC RL_REALLOC - - #define STB_IMAGE_WRITE_IMPLEMENTATION - #include "external/stb_image_write.h" // Required for: stbi_write_*() -#endif - -#if defined(SUPPORT_IMAGE_MANIPULATION) - #define STBIR_MALLOC(size,c) ((void)(c), RL_MALLOC(size)) - #define STBIR_FREE(ptr,c) ((void)(c), RL_FREE(ptr)) - - #define STB_IMAGE_RESIZE_IMPLEMENTATION - #include "external/stb_image_resize.h" // Required for: stbir_resize_uint8() [ImageResize()] -#endif - -#if defined(SUPPORT_IMAGE_GENERATION) - #define STB_PERLIN_IMPLEMENTATION - #include "external/stb_perlin.h" // Required for: stb_perlin_fbm_noise3 -#endif - -//---------------------------------------------------------------------------------- -// Defines and Macros -//---------------------------------------------------------------------------------- -#ifndef PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD - #define PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD 50 // Threshold over 255 to set alpha as 0 -#endif - -//---------------------------------------------------------------------------------- -// Types and Structures Definition -//---------------------------------------------------------------------------------- -// ... - -//---------------------------------------------------------------------------------- -// Global Variables Definition -//---------------------------------------------------------------------------------- -// It's lonely here... - -//---------------------------------------------------------------------------------- -// Other Modules Functions Declaration (required by text) -//---------------------------------------------------------------------------------- -// ... - -//---------------------------------------------------------------------------------- -// Module specific Functions Declaration -//---------------------------------------------------------------------------------- -#if defined(SUPPORT_FILEFORMAT_DDS) -static Image LoadDDS(const unsigned char *fileData, unsigned int fileSize); // Load DDS file data -#endif -#if defined(SUPPORT_FILEFORMAT_PKM) -static Image LoadPKM(const unsigned char *fileData, unsigned int fileSize); // Load PKM file data -#endif -#if defined(SUPPORT_FILEFORMAT_KTX) -static Image LoadKTX(const unsigned char *fileData, unsigned int fileSize); // Load KTX file data -static int SaveKTX(Image image, const char *fileName); // Save image data as KTX file -#endif -#if defined(SUPPORT_FILEFORMAT_PVR) -static Image LoadPVR(const unsigned char *fileData, unsigned int fileSize); // Load PVR file data -#endif -#if defined(SUPPORT_FILEFORMAT_ASTC) -static Image LoadASTC(const unsigned char *fileData, unsigned int fileSize); // Load ASTC file data -#endif -static Vector4 *LoadImageDataNormalized(Image image); // Load pixel data from image as Vector4 array (float normalized) - -//---------------------------------------------------------------------------------- -// Module Functions Definition -//---------------------------------------------------------------------------------- - -// Load image from file into CPU memory (RAM) -Image LoadImage(const char *fileName) -{ - Image image = { 0 }; - -#if defined(SUPPORT_FILEFORMAT_PNG) || \ - defined(SUPPORT_FILEFORMAT_BMP) || \ - defined(SUPPORT_FILEFORMAT_TGA) || \ - defined(SUPPORT_FILEFORMAT_JPG) || \ - defined(SUPPORT_FILEFORMAT_GIF) || \ - defined(SUPPORT_FILEFORMAT_PIC) || \ - defined(SUPPORT_FILEFORMAT_HDR) || \ - defined(SUPPORT_FILEFORMAT_PSD) -#define STBI_REQUIRED -#endif - - // Loading file to memory - unsigned int fileSize = 0; - unsigned char *fileData = LoadFileData(fileName, &fileSize); - - if (fileData != NULL) - { - // Loading image from memory data - image = LoadImageFromMemory(GetFileExtension(fileName), fileData, fileSize); - - if (image.data != NULL) TRACELOG(LOG_INFO, "IMAGE: [%s] Data loaded successfully (%ix%i)", fileName, image.width, image.height); - else TRACELOG(LOG_WARNING, "IMAGE: [%s] Failed to load data", fileName); - - RL_FREE(fileData); - } - - return image; -} - -// Load an image from RAW file data -Image LoadImageRaw(const char *fileName, int width, int height, int format, int headerSize) -{ - Image image = { 0 }; - - unsigned int dataSize = 0; - unsigned char *fileData = LoadFileData(fileName, &dataSize); - - if (fileData != NULL) - { - unsigned char *dataPtr = fileData; - unsigned int size = GetPixelDataSize(width, height, format); - - if (headerSize > 0) dataPtr += headerSize; - - image.data = RL_MALLOC(size); // Allocate required memory in bytes - memcpy(image.data, dataPtr, size); // Copy required data to image - image.width = width; - image.height = height; - image.mipmaps = 1; - image.format = format; - - RL_FREE(fileData); - } - - return image; -} - -// Load animated image data -// - Image.data buffer includes all frames: [image#0][image#1][image#2][...] -// - Number of frames is returned through 'frames' parameter -// - All frames are returned in RGBA format -// - Frames delay data is discarded -Image LoadImageAnim(const char *fileName, int *frames) -{ - Image image = { 0 }; - int framesCount = 1; - -#if defined(SUPPORT_FILEFORMAT_GIF) - if (IsFileExtension(fileName, ".gif")) - { - unsigned int dataSize = 0; - unsigned char *fileData = LoadFileData(fileName, &dataSize); - - if (fileData != NULL) - { - int comp = 0; - int **delays = NULL; - image.data = stbi_load_gif_from_memory(fileData, dataSize, delays, &image.width, &image.height, &framesCount, &comp, 4); - - image.mipmaps = 1; - image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - RL_FREE(fileData); - RL_FREE(delays); // NOTE: Frames delays are discarded - } - } -#else - if (false) { } -#endif - else image = LoadImage(fileName); - - // TODO: Support APNG animated images? - - *frames = framesCount; - return image; -} - -// Load image from memory buffer, fileType refers to extension: i.e. ".png" -Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, int dataSize) -{ - Image image = { 0 }; - - char fileExtLower[16] = { 0 }; - strcpy(fileExtLower, TextToLower(fileType)); - -#if defined(SUPPORT_FILEFORMAT_PNG) - if ((TextIsEqual(fileExtLower, ".png")) -#else - if ((false) -#endif -#if defined(SUPPORT_FILEFORMAT_BMP) - || (TextIsEqual(fileExtLower, ".bmp")) -#endif -#if defined(SUPPORT_FILEFORMAT_TGA) - || (TextIsEqual(fileExtLower, ".tga")) -#endif -#if defined(SUPPORT_FILEFORMAT_JPG) - || (TextIsEqual(fileExtLower, ".jpg") || - TextIsEqual(fileExtLower, ".jpeg")) -#endif -#if defined(SUPPORT_FILEFORMAT_GIF) - || (TextIsEqual(fileExtLower, ".gif")) -#endif -#if defined(SUPPORT_FILEFORMAT_PIC) - || (TextIsEqual(fileExtLower, ".pic")) -#endif -#if defined(SUPPORT_FILEFORMAT_PSD) - || (TextIsEqual(fileExtLower, ".psd")) -#endif - ) - { -#if defined(STBI_REQUIRED) - // NOTE: Using stb_image to load images (Supports multiple image formats) - - if (fileData != NULL) - { - int comp = 0; - image.data = stbi_load_from_memory(fileData, dataSize, &image.width, &image.height, &comp, 0); - - image.mipmaps = 1; - - if (comp == 1) image.format = PIXELFORMAT_UNCOMPRESSED_GRAYSCALE; - else if (comp == 2) image.format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA; - else if (comp == 3) image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8; - else if (comp == 4) image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - } -#endif - } -#if defined(SUPPORT_FILEFORMAT_HDR) - else if (TextIsEqual(fileExtLower, ".hdr")) - { -#if defined(STBI_REQUIRED) - if (fileData != NULL) - { - int comp = 0; - image.data = stbi_loadf_from_memory(fileData, dataSize, &image.width, &image.height, &comp, 0); - - image.mipmaps = 1; - - if (comp == 1) image.format = PIXELFORMAT_UNCOMPRESSED_R32; - else if (comp == 3) image.format = PIXELFORMAT_UNCOMPRESSED_R32G32B32; - else if (comp == 4) image.format = PIXELFORMAT_UNCOMPRESSED_R32G32B32A32; - else - { - TRACELOG(LOG_WARNING, "IMAGE: HDR file format not supported"); - UnloadImage(image); - } - } -#endif - } -#endif -#if defined(SUPPORT_FILEFORMAT_DDS) - else if (TextIsEqual(fileExtLower, ".dds")) image = LoadDDS(fileData, dataSize); -#endif -#if defined(SUPPORT_FILEFORMAT_PKM) - else if (TextIsEqual(fileExtLower, ".pkm")) image = LoadPKM(fileData, dataSize); -#endif -#if defined(SUPPORT_FILEFORMAT_KTX) - else if (TextIsEqual(fileExtLower, ".ktx")) image = LoadKTX(fileData, dataSize); -#endif -#if defined(SUPPORT_FILEFORMAT_PVR) - else if (TextIsEqual(fileExtLower, ".pvr")) image = LoadPVR(fileData, dataSize); -#endif -#if defined(SUPPORT_FILEFORMAT_ASTC) - else if (TextIsEqual(fileExtLower, ".astc")) image = LoadASTC(fileData, dataSize); -#endif - else TRACELOG(LOG_WARNING, "IMAGE: File format not supported"); - - return image; -} - -// Unload image from CPU memory (RAM) -void UnloadImage(Image image) -{ - RL_FREE(image.data); -} - -// Export image data to file -// NOTE: File format depends on fileName extension -bool ExportImage(Image image, const char *fileName) -{ - int success = 0; - -#if defined(SUPPORT_IMAGE_EXPORT) - int channels = 4; - bool allocatedData = false; - unsigned char *imgData = (unsigned char *)image.data; - - if (image.format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) channels = 1; - else if (image.format == PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA) channels = 2; - else if (image.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8) channels = 3; - else if (image.format == PIXELFORMAT_UNCOMPRESSED_R8G8B8A8) channels = 4; - else - { - // NOTE: Getting Color array as RGBA unsigned char values - imgData = (unsigned char *)LoadImageColors(image); - allocatedData = true; - } - -#if defined(SUPPORT_FILEFORMAT_PNG) - if (IsFileExtension(fileName, ".png")) success = stbi_write_png(fileName, image.width, image.height, channels, imgData, image.width*channels); -#else - if (false) {} -#endif -#if defined(SUPPORT_FILEFORMAT_BMP) - else if (IsFileExtension(fileName, ".bmp")) success = stbi_write_bmp(fileName, image.width, image.height, channels, imgData); -#endif -#if defined(SUPPORT_FILEFORMAT_TGA) - else if (IsFileExtension(fileName, ".tga")) success = stbi_write_tga(fileName, image.width, image.height, channels, imgData); -#endif -#if defined(SUPPORT_FILEFORMAT_JPG) - else if (IsFileExtension(fileName, ".jpg")) success = stbi_write_jpg(fileName, image.width, image.height, channels, imgData, 90); // JPG quality: between 1 and 100 -#endif -#if defined(SUPPORT_FILEFORMAT_KTX) - else if (IsFileExtension(fileName, ".ktx")) success = SaveKTX(image, fileName); -#endif - else if (IsFileExtension(fileName, ".raw")) - { - // Export raw pixel data (without header) - // NOTE: It's up to the user to track image parameters - success = SaveFileData(fileName, image.data, GetPixelDataSize(image.width, image.height, image.format)); - } - - if (allocatedData) RL_FREE(imgData); -#endif // SUPPORT_IMAGE_EXPORT - - if (success != 0) TRACELOG(LOG_INFO, "FILEIO: [%s] Image exported successfully", fileName); - else TRACELOG(LOG_WARNING, "FILEIO: [%s] Failed to export image", fileName); - - return success; -} - -// Export image as code file (.h) defining an array of bytes -bool ExportImageAsCode(Image image, const char *fileName) -{ - bool success = false; - -#ifndef TEXT_BYTES_PER_LINE - #define TEXT_BYTES_PER_LINE 20 -#endif - - int dataSize = GetPixelDataSize(image.width, image.height, image.format); - - // NOTE: Text data buffer size is estimated considering image data size in bytes - // and requiring 6 char bytes for every byte: "0x00, " - char *txtData = (char *)RL_CALLOC(6*dataSize + 2000, sizeof(char)); - - int bytesCount = 0; - bytesCount += sprintf(txtData + bytesCount, "////////////////////////////////////////////////////////////////////////////////////////\n"); - bytesCount += sprintf(txtData + bytesCount, "// //\n"); - bytesCount += sprintf(txtData + bytesCount, "// ImageAsCode exporter v1.0 - Image pixel data exported as an array of bytes //\n"); - bytesCount += sprintf(txtData + bytesCount, "// //\n"); - bytesCount += sprintf(txtData + bytesCount, "// more info and bugs-report: github.com/raysan5/raylib //\n"); - bytesCount += sprintf(txtData + bytesCount, "// feedback and support: ray[at]raylib.com //\n"); - bytesCount += sprintf(txtData + bytesCount, "// //\n"); - bytesCount += sprintf(txtData + bytesCount, "// Copyright (c) 2020 Ramon Santamaria (@raysan5) //\n"); - bytesCount += sprintf(txtData + bytesCount, "// //\n"); - bytesCount += sprintf(txtData + bytesCount, "////////////////////////////////////////////////////////////////////////////////////////\n\n"); - - // Get file name from path and convert variable name to uppercase - char varFileName[256] = { 0 }; - strcpy(varFileName, GetFileNameWithoutExt(fileName)); - for (int i = 0; varFileName[i] != '\0'; i++) if ((varFileName[i] >= 'a') && (varFileName[i] <= 'z')) { varFileName[i] = varFileName[i] - 32; } - - // Add image information - bytesCount += sprintf(txtData + bytesCount, "// Image data information\n"); - bytesCount += sprintf(txtData + bytesCount, "#define %s_WIDTH %i\n", varFileName, image.width); - bytesCount += sprintf(txtData + bytesCount, "#define %s_HEIGHT %i\n", varFileName, image.height); - bytesCount += sprintf(txtData + bytesCount, "#define %s_FORMAT %i // raylib internal pixel format\n\n", varFileName, image.format); - - bytesCount += sprintf(txtData + bytesCount, "static unsigned char %s_DATA[%i] = { ", varFileName, dataSize); - for (int i = 0; i < dataSize - 1; i++) bytesCount += sprintf(txtData + bytesCount, ((i%TEXT_BYTES_PER_LINE == 0)? "0x%x,\n" : "0x%x, "), ((unsigned char *)image.data)[i]); - bytesCount += sprintf(txtData + bytesCount, "0x%x };\n", ((unsigned char *)image.data)[dataSize - 1]); - - // NOTE: Text data length exported is determined by '\0' (NULL) character - success = SaveFileText(fileName, txtData); - - RL_FREE(txtData); - - return success; -} - -//------------------------------------------------------------------------------------ -// Image generation functions -//------------------------------------------------------------------------------------ -// Generate image: plain color -Image GenImageColor(int width, int height, Color color) -{ - Color *pixels = (Color *)RL_CALLOC(width*height, sizeof(Color)); - - for (int i = 0; i < width*height; i++) pixels[i] = color; - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -#if defined(SUPPORT_IMAGE_GENERATION) -// Generate image: vertical gradient -Image GenImageGradientV(int width, int height, Color top, Color bottom) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - for (int j = 0; j < height; j++) - { - float factor = (float)j/(float)height; - for (int i = 0; i < width; i++) - { - pixels[j*width + i].r = (int)((float)bottom.r*factor + (float)top.r*(1.f - factor)); - pixels[j*width + i].g = (int)((float)bottom.g*factor + (float)top.g*(1.f - factor)); - pixels[j*width + i].b = (int)((float)bottom.b*factor + (float)top.b*(1.f - factor)); - pixels[j*width + i].a = (int)((float)bottom.a*factor + (float)top.a*(1.f - factor)); - } - } - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -// Generate image: horizontal gradient -Image GenImageGradientH(int width, int height, Color left, Color right) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - for (int i = 0; i < width; i++) - { - float factor = (float)i/(float)width; - for (int j = 0; j < height; j++) - { - pixels[j*width + i].r = (int)((float)right.r*factor + (float)left.r*(1.f - factor)); - pixels[j*width + i].g = (int)((float)right.g*factor + (float)left.g*(1.f - factor)); - pixels[j*width + i].b = (int)((float)right.b*factor + (float)left.b*(1.f - factor)); - pixels[j*width + i].a = (int)((float)right.a*factor + (float)left.a*(1.f - factor)); - } - } - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -// Generate image: radial gradient -Image GenImageGradientRadial(int width, int height, float density, Color inner, Color outer) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - float radius = (width < height)? (float)width/2.0f : (float)height/2.0f; - - float centerX = (float)width/2.0f; - float centerY = (float)height/2.0f; - - for (int y = 0; y < height; y++) - { - for (int x = 0; x < width; x++) - { - float dist = hypotf((float)x - centerX, (float)y - centerY); - float factor = (dist - radius*density)/(radius*(1.0f - density)); - - factor = (float)fmax(factor, 0.0f); - factor = (float)fmin(factor, 1.f); // dist can be bigger than radius so we have to check - - pixels[y*width + x].r = (int)((float)outer.r*factor + (float)inner.r*(1.0f - factor)); - pixels[y*width + x].g = (int)((float)outer.g*factor + (float)inner.g*(1.0f - factor)); - pixels[y*width + x].b = (int)((float)outer.b*factor + (float)inner.b*(1.0f - factor)); - pixels[y*width + x].a = (int)((float)outer.a*factor + (float)inner.a*(1.0f - factor)); - } - } - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -// Generate image: checked -Image GenImageChecked(int width, int height, int checksX, int checksY, Color col1, Color col2) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - for (int y = 0; y < height; y++) - { - for (int x = 0; x < width; x++) - { - if ((x/checksX + y/checksY)%2 == 0) pixels[y*width + x] = col1; - else pixels[y*width + x] = col2; - } - } - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -// Generate image: white noise -Image GenImageWhiteNoise(int width, int height, float factor) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - for (int i = 0; i < width*height; i++) - { - if (GetRandomValue(0, 99) < (int)(factor*100.0f)) pixels[i] = WHITE; - else pixels[i] = BLACK; - } - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -// Generate image: perlin noise -Image GenImagePerlinNoise(int width, int height, int offsetX, int offsetY, float scale) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - for (int y = 0; y < height; y++) - { - for (int x = 0; x < width; x++) - { - float nx = (float)(x + offsetX)*scale/(float)width; - float ny = (float)(y + offsetY)*scale/(float)height; - - // Typical values to start playing with: - // lacunarity = ~2.0 -- spacing between successive octaves (use exactly 2.0 for wrapping output) - // gain = 0.5 -- relative weighting applied to each successive octave - // octaves = 6 -- number of "octaves" of noise3() to sum - - // NOTE: We need to translate the data from [-1..1] to [0..1] - float p = (stb_perlin_fbm_noise3(nx, ny, 1.0f, 2.0f, 0.5f, 6) + 1.0f)/2.0f; - - int intensity = (int)(p*255.0f); - pixels[y*width + x] = (Color){intensity, intensity, intensity, 255}; - } - } - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} - -// Generate image: cellular algorithm. Bigger tileSize means bigger cells -Image GenImageCellular(int width, int height, int tileSize) -{ - Color *pixels = (Color *)RL_MALLOC(width*height*sizeof(Color)); - - int seedsPerRow = width/tileSize; - int seedsPerCol = height/tileSize; - int seedsCount = seedsPerRow*seedsPerCol; - - Vector2 *seeds = (Vector2 *)RL_MALLOC(seedsCount*sizeof(Vector2)); - - for (int i = 0; i < seedsCount; i++) - { - int y = (i/seedsPerRow)*tileSize + GetRandomValue(0, tileSize - 1); - int x = (i%seedsPerRow)*tileSize + GetRandomValue(0, tileSize - 1); - seeds[i] = (Vector2){ (float)x, (float)y}; - } - - for (int y = 0; y < height; y++) - { - int tileY = y/tileSize; - - for (int x = 0; x < width; x++) - { - int tileX = x/tileSize; - - float minDistance = (float)strtod("Inf", NULL); - - // Check all adjacent tiles - for (int i = -1; i < 2; i++) - { - if ((tileX + i < 0) || (tileX + i >= seedsPerRow)) continue; - - for (int j = -1; j < 2; j++) - { - if ((tileY + j < 0) || (tileY + j >= seedsPerCol)) continue; - - Vector2 neighborSeed = seeds[(tileY + j)*seedsPerRow + tileX + i]; - - float dist = (float)hypot(x - (int)neighborSeed.x, y - (int)neighborSeed.y); - minDistance = (float)fmin(minDistance, dist); - } - } - - // I made this up but it seems to give good results at all tile sizes - int intensity = (int)(minDistance*256.0f/tileSize); - if (intensity > 255) intensity = 255; - - pixels[y*width + x] = (Color){ intensity, intensity, intensity, 255 }; - } - } - - RL_FREE(seeds); - - Image image = { - .data = pixels, - .width = width, - .height = height, - .format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, - .mipmaps = 1 - }; - - return image; -} -#endif // SUPPORT_IMAGE_GENERATION - -//------------------------------------------------------------------------------------ -// Image manipulation functions -//------------------------------------------------------------------------------------ -// Copy an image to a new image -Image ImageCopy(Image image) -{ - Image newImage = { 0 }; - - int width = image.width; - int height = image.height; - int size = 0; - - for (int i = 0; i < image.mipmaps; i++) - { - size += GetPixelDataSize(width, height, image.format); - - width /= 2; - height /= 2; - - // Security check for NPOT textures - if (width < 1) width = 1; - if (height < 1) height = 1; - } - - newImage.data = RL_MALLOC(size); - - if (newImage.data != NULL) - { - // NOTE: Size must be provided in bytes - memcpy(newImage.data, image.data, size); - - newImage.width = image.width; - newImage.height = image.height; - newImage.mipmaps = image.mipmaps; - newImage.format = image.format; - } - - return newImage; -} - -// Create an image from another image piece -Image ImageFromImage(Image image, Rectangle rec) -{ - Image result = { 0 }; - - int bytesPerPixel = GetPixelDataSize(1, 1, image.format); - - // TODO: Check rec is valid? - - result.width = (int)rec.width; - result.height = (int)rec.height; - result.data = RL_CALLOC((int)(rec.width*rec.height)*bytesPerPixel, 1); - result.format = image.format; - result.mipmaps = 1; - - for (int y = 0; y < rec.height; y++) - { - memcpy(((unsigned char *)result.data) + y*(int)rec.width*bytesPerPixel, ((unsigned char *)image.data) + ((y + (int)rec.y)*image.width + (int)rec.x)*bytesPerPixel, (int)rec.width*bytesPerPixel); - } - - return result; -} - -// Crop an image to area defined by a rectangle -// NOTE: Security checks are performed in case rectangle goes out of bounds -void ImageCrop(Image *image, Rectangle crop) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - // Security checks to validate crop rectangle - if (crop.x < 0) { crop.width += crop.x; crop.x = 0; } - if (crop.y < 0) { crop.height += crop.y; crop.y = 0; } - if ((crop.x + crop.width) > image->width) crop.width = image->width - crop.x; - if ((crop.y + crop.height) > image->height) crop.height = image->height - crop.y; - if ((crop.x > image->width) || (crop.y > image->height)) - { - TRACELOG(LOG_WARNING, "IMAGE: Failed to crop, rectangle out of bounds"); - return; - } - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else - { - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - - unsigned char *croppedData = (unsigned char *)RL_MALLOC((int)(crop.width*crop.height)*bytesPerPixel); - - // OPTION 1: Move cropped data line-by-line - for (int y = (int)crop.y, offsetSize = 0; y < (int)(crop.y + crop.height); y++) - { - memcpy(croppedData + offsetSize, ((unsigned char *)image->data) + (y*image->width + (int)crop.x)*bytesPerPixel, (int)crop.width*bytesPerPixel); - offsetSize += ((int)crop.width*bytesPerPixel); - } - - /* - // OPTION 2: Move cropped data pixel-by-pixel or byte-by-byte - for (int y = (int)crop.y; y < (int)(crop.y + crop.height); y++) - { - for (int x = (int)crop.x; x < (int)(crop.x + crop.width); x++) - { - //memcpy(croppedData + ((y - (int)crop.y)*(int)crop.width + (x - (int)crop.x))*bytesPerPixel, ((unsigned char *)image->data) + (y*image->width + x)*bytesPerPixel, bytesPerPixel); - for (int i = 0; i < bytesPerPixel; i++) croppedData[((y - (int)crop.y)*(int)crop.width + (x - (int)crop.x))*bytesPerPixel + i] = ((unsigned char *)image->data)[(y*image->width + x)*bytesPerPixel + i]; - } - } - */ - - RL_FREE(image->data); - image->data = croppedData; - image->width = (int)crop.width; - image->height = (int)crop.height; - } -} - -// Convert image data to desired format -void ImageFormat(Image *image, int newFormat) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if ((newFormat != 0) && (image->format != newFormat)) - { - if ((image->format < PIXELFORMAT_COMPRESSED_DXT1_RGB) && (newFormat < PIXELFORMAT_COMPRESSED_DXT1_RGB)) - { - Vector4 *pixels = LoadImageDataNormalized(*image); // Supports 8 to 32 bit per channel - - RL_FREE(image->data); // WARNING! We loose mipmaps data --> Regenerated at the end... - image->data = NULL; - image->format = newFormat; - - int k = 0; - - switch (image->format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: - { - image->data = (unsigned char *)RL_MALLOC(image->width*image->height*sizeof(unsigned char)); - - for (int i = 0; i < image->width*image->height; i++) - { - ((unsigned char *)image->data)[i] = (unsigned char)((pixels[i].x*0.299f + pixels[i].y*0.587f + pixels[i].z*0.114f)*255.0f); - } - - } break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - { - image->data = (unsigned char *)RL_MALLOC(image->width*image->height*2*sizeof(unsigned char)); - - for (int i = 0; i < image->width*image->height*2; i += 2, k++) - { - ((unsigned char *)image->data)[i] = (unsigned char)((pixels[k].x*0.299f + (float)pixels[k].y*0.587f + (float)pixels[k].z*0.114f)*255.0f); - ((unsigned char *)image->data)[i + 1] = (unsigned char)(pixels[k].w*255.0f); - } - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - { - image->data = (unsigned short *)RL_MALLOC(image->width*image->height*sizeof(unsigned short)); - - unsigned char r = 0; - unsigned char g = 0; - unsigned char b = 0; - - for (int i = 0; i < image->width*image->height; i++) - { - r = (unsigned char)(round(pixels[i].x*31.0f)); - g = (unsigned char)(round(pixels[i].y*63.0f)); - b = (unsigned char)(round(pixels[i].z*31.0f)); - - ((unsigned short *)image->data)[i] = (unsigned short)r << 11 | (unsigned short)g << 5 | (unsigned short)b; - } - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: - { - image->data = (unsigned char *)RL_MALLOC(image->width*image->height*3*sizeof(unsigned char)); - - for (int i = 0, k = 0; i < image->width*image->height*3; i += 3, k++) - { - ((unsigned char *)image->data)[i] = (unsigned char)(pixels[k].x*255.0f); - ((unsigned char *)image->data)[i + 1] = (unsigned char)(pixels[k].y*255.0f); - ((unsigned char *)image->data)[i + 2] = (unsigned char)(pixels[k].z*255.0f); - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - image->data = (unsigned short *)RL_MALLOC(image->width*image->height*sizeof(unsigned short)); - - unsigned char r = 0; - unsigned char g = 0; - unsigned char b = 0; - unsigned char a = 0; - - for (int i = 0; i < image->width*image->height; i++) - { - r = (unsigned char)(round(pixels[i].x*31.0f)); - g = (unsigned char)(round(pixels[i].y*31.0f)); - b = (unsigned char)(round(pixels[i].z*31.0f)); - a = (pixels[i].w > ((float)PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD/255.0f))? 1 : 0; - - ((unsigned short *)image->data)[i] = (unsigned short)r << 11 | (unsigned short)g << 6 | (unsigned short)b << 1 | (unsigned short)a; - } - - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - image->data = (unsigned short *)RL_MALLOC(image->width*image->height*sizeof(unsigned short)); - - unsigned char r = 0; - unsigned char g = 0; - unsigned char b = 0; - unsigned char a = 0; - - for (int i = 0; i < image->width*image->height; i++) - { - r = (unsigned char)(round(pixels[i].x*15.0f)); - g = (unsigned char)(round(pixels[i].y*15.0f)); - b = (unsigned char)(round(pixels[i].z*15.0f)); - a = (unsigned char)(round(pixels[i].w*15.0f)); - - ((unsigned short *)image->data)[i] = (unsigned short)r << 12 | (unsigned short)g << 8 | (unsigned short)b << 4 | (unsigned short)a; - } - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: - { - image->data = (unsigned char *)RL_MALLOC(image->width*image->height*4*sizeof(unsigned char)); - - for (int i = 0, k = 0; i < image->width*image->height*4; i += 4, k++) - { - ((unsigned char *)image->data)[i] = (unsigned char)(pixels[k].x*255.0f); - ((unsigned char *)image->data)[i + 1] = (unsigned char)(pixels[k].y*255.0f); - ((unsigned char *)image->data)[i + 2] = (unsigned char)(pixels[k].z*255.0f); - ((unsigned char *)image->data)[i + 3] = (unsigned char)(pixels[k].w*255.0f); - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R32: - { - // WARNING: Image is converted to GRAYSCALE eqeuivalent 32bit - - image->data = (float *)RL_MALLOC(image->width*image->height*sizeof(float)); - - for (int i = 0; i < image->width*image->height; i++) - { - ((float *)image->data)[i] = (float)(pixels[i].x*0.299f + pixels[i].y*0.587f + pixels[i].z*0.114f); - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: - { - image->data = (float *)RL_MALLOC(image->width*image->height*3*sizeof(float)); - - for (int i = 0, k = 0; i < image->width*image->height*3; i += 3, k++) - { - ((float *)image->data)[i] = pixels[k].x; - ((float *)image->data)[i + 1] = pixels[k].y; - ((float *)image->data)[i + 2] = pixels[k].z; - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: - { - image->data = (float *)RL_MALLOC(image->width*image->height*4*sizeof(float)); - - for (int i = 0, k = 0; i < image->width*image->height*4; i += 4, k++) - { - ((float *)image->data)[i] = pixels[k].x; - ((float *)image->data)[i + 1] = pixels[k].y; - ((float *)image->data)[i + 2] = pixels[k].z; - ((float *)image->data)[i + 3] = pixels[k].w; - } - } break; - default: break; - } - - RL_FREE(pixels); - pixels = NULL; - - // In case original image had mipmaps, generate mipmaps for formated image - // NOTE: Original mipmaps are replaced by new ones, if custom mipmaps were used, they are lost - if (image->mipmaps > 1) - { - image->mipmaps = 1; - #if defined(SUPPORT_IMAGE_MANIPULATION) - if (image->data != NULL) ImageMipmaps(image); - #endif - } - } - else TRACELOG(LOG_WARNING, "IMAGE: Data format is compressed, can not be converted"); - } -} - -// Convert image to POT (power-of-two) -// NOTE: It could be useful on OpenGL ES 2.0 (RPI, HTML5) -void ImageToPOT(Image *image, Color fill) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - // Calculate next power-of-two values - // NOTE: Just add the required amount of pixels at the right and bottom sides of image... - int potWidth = (int)powf(2, ceilf(logf((float)image->width)/logf(2))); - int potHeight = (int)powf(2, ceilf(logf((float)image->height)/logf(2))); - - // Check if POT texture generation is required (if texture is not already POT) - if ((potWidth != image->width) || (potHeight != image->height)) ImageResizeCanvas(image, potWidth, potHeight, 0, 0, fill); -} - -#if defined(SUPPORT_IMAGE_MANIPULATION) -// Create an image from text (default font) -Image ImageText(const char *text, int fontSize, Color color) -{ - int defaultFontSize = 10; // Default Font chars height in pixel - if (fontSize < defaultFontSize) fontSize = defaultFontSize; - int spacing = fontSize/defaultFontSize; - - Image imText = ImageTextEx(GetFontDefault(), text, (float)fontSize, (float)spacing, color); - - return imText; -} - -// Create an image from text (custom sprite font) -Image ImageTextEx(Font font, const char *text, float fontSize, float spacing, Color tint) -{ - int length = (int)strlen(text); - - int textOffsetX = 0; // Image drawing position X - int textOffsetY = 0; // Offset between lines (on line break '\n') - - // NOTE: Text image is generated at font base size, later scaled to desired font size - Vector2 imSize = MeasureTextEx(font, text, (float)font.baseSize, spacing); - - // Create image to store text - Image imText = GenImageColor((int)imSize.x, (int)imSize.y, BLANK); - - for (int i = 0; i < length; i++) - { - // Get next codepoint from byte string and glyph index in font - int codepointByteCount = 0; - int codepoint = GetNextCodepoint(&text[i], &codepointByteCount); - int index = GetGlyphIndex(font, codepoint); - - // NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f) - // but we need to draw all of the bad bytes using the '?' symbol moving one byte - if (codepoint == 0x3f) codepointByteCount = 1; - - if (codepoint == '\n') - { - // NOTE: Fixed line spacing of 1.5 line-height - // TODO: Support custom line spacing defined by user - textOffsetY += (font.baseSize + font.baseSize/2); - textOffsetX = 0; - } - else - { - if ((codepoint != ' ') && (codepoint != '\t')) - { - Rectangle rec = { (float)(textOffsetX + font.chars[index].offsetX), (float)(textOffsetY + font.chars[index].offsetY), (float)font.recs[index].width, (float)font.recs[index].height }; - ImageDraw(&imText, font.chars[index].image, (Rectangle){ 0, 0, (float)font.chars[index].image.width, (float)font.chars[index].image.height }, rec, tint); - } - - if (font.chars[index].advanceX == 0) textOffsetX += (int)(font.recs[index].width + spacing); - else textOffsetX += font.chars[index].advanceX + (int)spacing; - } - - i += (codepointByteCount - 1); // Move text bytes counter to next codepoint - } - - // Scale image depending on text size - if (fontSize > imSize.y) - { - float scaleFactor = fontSize/imSize.y; - TRACELOG(LOG_INFO, "IMAGE: Text scaled by factor: %f", scaleFactor); - - // Using nearest-neighbor scaling algorithm for default font - if (font.texture.id == GetFontDefault().texture.id) ImageResizeNN(&imText, (int)(imSize.x*scaleFactor), (int)(imSize.y*scaleFactor)); - else ImageResize(&imText, (int)(imSize.x*scaleFactor), (int)(imSize.y*scaleFactor)); - } - - return imText; -} - -// Crop image depending on alpha value -// NOTE: Threshold is defined as a percentatge: 0.0f -> 1.0f -void ImageAlphaCrop(Image *image, float threshold) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - Rectangle crop = GetImageAlphaBorder(*image, threshold); - - // Crop if rectangle is valid - if (((int)crop.width != 0) && ((int)crop.height != 0)) ImageCrop(image, crop); -} - -// Clear alpha channel to desired color -// NOTE: Threshold defines the alpha limit, 0.0f to 1.0f -void ImageAlphaClear(Image *image, Color color, float threshold) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else - { - switch (image->format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - { - unsigned char thresholdValue = (unsigned char)(threshold*255.0f); - for (int i = 1; i < image->width*image->height*2; i += 2) - { - if (((unsigned char *)image->data)[i] <= thresholdValue) - { - ((unsigned char *)image->data)[i - 1] = color.r; - ((unsigned char *)image->data)[i] = color.a; - } - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - unsigned char thresholdValue = ((threshold < 0.5f)? 0 : 1); - - unsigned char r = (unsigned char)(round((float)color.r*31.0f)); - unsigned char g = (unsigned char)(round((float)color.g*31.0f)); - unsigned char b = (unsigned char)(round((float)color.b*31.0f)); - unsigned char a = (color.a < 128)? 0 : 1; - - for (int i = 0; i < image->width*image->height; i++) - { - if ((((unsigned short *)image->data)[i] & 0b0000000000000001) <= thresholdValue) - { - ((unsigned short *)image->data)[i] = (unsigned short)r << 11 | (unsigned short)g << 6 | (unsigned short)b << 1 | (unsigned short)a; - } - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - unsigned char thresholdValue = (unsigned char)(threshold*15.0f); - - unsigned char r = (unsigned char)(round((float)color.r*15.0f)); - unsigned char g = (unsigned char)(round((float)color.g*15.0f)); - unsigned char b = (unsigned char)(round((float)color.b*15.0f)); - unsigned char a = (unsigned char)(round((float)color.a*15.0f)); - - for (int i = 0; i < image->width*image->height; i++) - { - if ((((unsigned short *)image->data)[i] & 0x000f) <= thresholdValue) - { - ((unsigned short *)image->data)[i] = (unsigned short)r << 12 | (unsigned short)g << 8 | (unsigned short)b << 4 | (unsigned short)a; - } - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: - { - unsigned char thresholdValue = (unsigned char)(threshold*255.0f); - for (int i = 3; i < image->width*image->height*4; i += 4) - { - if (((unsigned char *)image->data)[i] <= thresholdValue) - { - ((unsigned char *)image->data)[i - 3] = color.r; - ((unsigned char *)image->data)[i - 2] = color.g; - ((unsigned char *)image->data)[i - 1] = color.b; - ((unsigned char *)image->data)[i] = color.a; - } - } - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: - { - for (int i = 3; i < image->width*image->height*4; i += 4) - { - if (((float *)image->data)[i] <= threshold) - { - ((float *)image->data)[i - 3] = (float)color.r/255.0f; - ((float *)image->data)[i - 2] = (float)color.g/255.0f; - ((float *)image->data)[i - 1] = (float)color.b/255.0f; - ((float *)image->data)[i] = (float)color.a/255.0f; - } - } - } break; - default: break; - } - } -} - -// Apply alpha mask to image -// NOTE 1: Returned image is GRAY_ALPHA (16bit) or RGBA (32bit) -// NOTE 2: alphaMask should be same size as image -void ImageAlphaMask(Image *image, Image alphaMask) -{ - if ((image->width != alphaMask.width) || (image->height != alphaMask.height)) - { - TRACELOG(LOG_WARNING, "IMAGE: Alpha mask must be same size as image"); - } - else if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) - { - TRACELOG(LOG_WARNING, "IMAGE: Alpha mask can not be applied to compressed data formats"); - } - else - { - // Force mask to be Grayscale - Image mask = ImageCopy(alphaMask); - if (mask.format != PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) ImageFormat(&mask, PIXELFORMAT_UNCOMPRESSED_GRAYSCALE); - - // In case image is only grayscale, we just add alpha channel - if (image->format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) - { - unsigned char *data = (unsigned char *)RL_MALLOC(image->width*image->height*2); - - // Apply alpha mask to alpha channel - for (int i = 0, k = 0; (i < mask.width*mask.height) || (i < image->width*image->height); i++, k += 2) - { - data[k] = ((unsigned char *)image->data)[i]; - data[k + 1] = ((unsigned char *)mask.data)[i]; - } - - RL_FREE(image->data); - image->data = data; - image->format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA; - } - else - { - // Convert image to RGBA - if (image->format != PIXELFORMAT_UNCOMPRESSED_R8G8B8A8) ImageFormat(image, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8); - - // Apply alpha mask to alpha channel - for (int i = 0, k = 3; (i < mask.width*mask.height) || (i < image->width*image->height); i++, k += 4) - { - ((unsigned char *)image->data)[k] = ((unsigned char *)mask.data)[i]; - } - } - - UnloadImage(mask); - } -} - -// Premultiply alpha channel -void ImageAlphaPremultiply(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - float alpha = 0.0f; - Color *pixels = LoadImageColors(*image); - - for (int i = 0; i < image->width*image->height; i++) - { - if (pixels[i].a == 0) - { - pixels[i].r = 0; - pixels[i].g = 0; - pixels[i].b = 0; - } - else if (pixels[i].a < 255) - { - alpha = (float)pixels[i].a/255.0f; - pixels[i].r = (unsigned char)((float)pixels[i].r*alpha); - pixels[i].g = (unsigned char)((float)pixels[i].g*alpha); - pixels[i].b = (unsigned char)((float)pixels[i].b*alpha); - } - } - - RL_FREE(image->data); - - int format = image->format; - image->data = pixels; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); -} - -// Resize and image to new size -// NOTE: Uses stb default scaling filters (both bicubic): -// STBIR_DEFAULT_FILTER_UPSAMPLE STBIR_FILTER_CATMULLROM -// STBIR_DEFAULT_FILTER_DOWNSAMPLE STBIR_FILTER_MITCHELL (high-quality Catmull-Rom) -void ImageResize(Image *image, int newWidth, int newHeight) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - bool fastPath = true; - if ((image->format != PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) && (image->format != PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA) && (image->format != PIXELFORMAT_UNCOMPRESSED_R8G8B8) && (image->format != PIXELFORMAT_UNCOMPRESSED_R8G8B8A8)) fastPath = true; - - if (fastPath) - { - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - unsigned char *output = RL_MALLOC(newWidth*newHeight*bytesPerPixel); - - switch (image->format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: stbir_resize_uint8((unsigned char *)image->data, image->width, image->height, 0, output, newWidth, newHeight, 0, 1); break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: stbir_resize_uint8((unsigned char *)image->data, image->width, image->height, 0, output, newWidth, newHeight, 0, 2); break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: stbir_resize_uint8((unsigned char *)image->data, image->width, image->height, 0, output, newWidth, newHeight, 0, 3); break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: stbir_resize_uint8((unsigned char *)image->data, image->width, image->height, 0, output, newWidth, newHeight, 0, 4); break; - default: break; - } - - RL_FREE(image->data); - image->data = output; - image->width = newWidth; - image->height = newHeight; - } - else - { - // Get data as Color pixels array to work with it - Color *pixels = LoadImageColors(*image); - Color *output = (Color *)RL_MALLOC(newWidth*newHeight*sizeof(Color)); - - // NOTE: Color data is casted to (unsigned char *), there shouldn't been any problem... - stbir_resize_uint8((unsigned char *)pixels, image->width, image->height, 0, (unsigned char *)output, newWidth, newHeight, 0, 4); - - int format = image->format; - - UnloadImageColors(pixels); - RL_FREE(image->data); - - image->data = output; - image->width = newWidth; - image->height = newHeight; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); // Reformat 32bit RGBA image to original format - } -} - -// Resize and image to new size using Nearest-Neighbor scaling algorithm -void ImageResizeNN(Image *image,int newWidth,int newHeight) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - Color *pixels = LoadImageColors(*image); - Color *output = (Color *)RL_MALLOC(newWidth*newHeight*sizeof(Color)); - - // EDIT: added +1 to account for an early rounding problem - int xRatio = (int)((image->width << 16)/newWidth) + 1; - int yRatio = (int)((image->height << 16)/newHeight) + 1; - - int x2, y2; - for (int y = 0; y < newHeight; y++) - { - for (int x = 0; x < newWidth; x++) - { - x2 = ((x*xRatio) >> 16); - y2 = ((y*yRatio) >> 16); - - output[(y*newWidth) + x] = pixels[(y2*image->width) + x2] ; - } - } - - int format = image->format; - - RL_FREE(image->data); - - image->data = output; - image->width = newWidth; - image->height = newHeight; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); // Reformat 32bit RGBA image to original format - - UnloadImageColors(pixels); -} - -// Resize canvas and fill with color -// NOTE: Resize offset is relative to the top-left corner of the original image -void ImageResizeCanvas(Image *image, int newWidth, int newHeight, int offsetX, int offsetY, Color fill) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else if ((newWidth != image->width) || (newHeight != image->height)) - { - Rectangle srcRec = { 0, 0, (float)image->width, (float)image->height }; - Vector2 dstPos = { (float)offsetX, (float)offsetY }; - - if (offsetX < 0) - { - srcRec.x = (float)-offsetX; - srcRec.width += (float)offsetX; - dstPos.x = 0; - } - else if ((offsetX + image->width) > newWidth) srcRec.width = (float)(newWidth - offsetX); - - if (offsetY < 0) - { - srcRec.y = (float)-offsetY; - srcRec.height += (float)offsetY; - dstPos.y = 0; - } - else if ((offsetY + image->height) > newHeight) srcRec.height = (float)(newHeight - offsetY); - - if (newWidth < srcRec.width) srcRec.width = (float)newWidth; - if (newHeight < srcRec.height) srcRec.height = (float)newHeight; - - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - unsigned char *resizedData = (unsigned char *)RL_CALLOC(newWidth*newHeight*bytesPerPixel, 1); - - // TODO: Fill resizedData with fill color (must be formatted to image->format) - - int dstOffsetSize = ((int)dstPos.y*newWidth + (int)dstPos.x)*bytesPerPixel; - - for (int y = 0; y < (int)srcRec.height; y++) - { - memcpy(resizedData + dstOffsetSize, ((unsigned char *)image->data) + ((y + (int)srcRec.y)*image->width + (int)srcRec.x)*bytesPerPixel, (int)srcRec.width*bytesPerPixel); - dstOffsetSize += (newWidth*bytesPerPixel); - } - - RL_FREE(image->data); - image->data = resizedData; - image->width = newWidth; - image->height = newHeight; - } -} - -// Generate all mipmap levels for a provided image -// NOTE 1: Supports POT and NPOT images -// NOTE 2: image.data is scaled to include mipmap levels -// NOTE 3: Mipmaps format is the same as base image -void ImageMipmaps(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - int mipCount = 1; // Required mipmap levels count (including base level) - int mipWidth = image->width; // Base image width - int mipHeight = image->height; // Base image height - int mipSize = GetPixelDataSize(mipWidth, mipHeight, image->format); // Image data size (in bytes) - - // Count mipmap levels required - while ((mipWidth != 1) || (mipHeight != 1)) - { - if (mipWidth != 1) mipWidth /= 2; - if (mipHeight != 1) mipHeight /= 2; - - // Security check for NPOT textures - if (mipWidth < 1) mipWidth = 1; - if (mipHeight < 1) mipHeight = 1; - - TRACELOGD("IMAGE: Next mipmap level: %i x %i - current size %i", mipWidth, mipHeight, mipSize); - - mipCount++; - mipSize += GetPixelDataSize(mipWidth, mipHeight, image->format); // Add mipmap size (in bytes) - } - - if (image->mipmaps < mipCount) - { - void *temp = RL_REALLOC(image->data, mipSize); - - if (temp != NULL) image->data = temp; // Assign new pointer (new size) to store mipmaps data - else TRACELOG(LOG_WARNING, "IMAGE: Mipmaps required memory could not be allocated"); - - // Pointer to allocated memory point where store next mipmap level data - unsigned char *nextmip = (unsigned char *)image->data + GetPixelDataSize(image->width, image->height, image->format); - - mipWidth = image->width/2; - mipHeight = image->height/2; - mipSize = GetPixelDataSize(mipWidth, mipHeight, image->format); - Image imCopy = ImageCopy(*image); - - for (int i = 1; i < mipCount; i++) - { - TRACELOGD("IMAGE: Generating mipmap level: %i (%i x %i) - size: %i - offset: 0x%x", i, mipWidth, mipHeight, mipSize, nextmip); - - ImageResize(&imCopy, mipWidth, mipHeight); // Uses internally Mitchell cubic downscale filter - - memcpy(nextmip, imCopy.data, mipSize); - nextmip += mipSize; - image->mipmaps++; - - mipWidth /= 2; - mipHeight /= 2; - - // Security check for NPOT textures - if (mipWidth < 1) mipWidth = 1; - if (mipHeight < 1) mipHeight = 1; - - mipSize = GetPixelDataSize(mipWidth, mipHeight, image->format); - } - - UnloadImage(imCopy); - } - else TRACELOG(LOG_WARNING, "IMAGE: Mipmaps already available"); -} - -// Dither image data to 16bpp or lower (Floyd-Steinberg dithering) -// NOTE: In case selected bpp do not represent an known 16bit format, -// dithered data is stored in the LSB part of the unsigned short -void ImageDither(Image *image, int rBpp, int gBpp, int bBpp, int aBpp) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) - { - TRACELOG(LOG_WARNING, "IMAGE: Compressed data formats can not be dithered"); - return; - } - - if ((rBpp + gBpp + bBpp + aBpp) > 16) - { - TRACELOG(LOG_WARNING, "IMAGE: Unsupported dithering bpps (%ibpp), only 16bpp or lower modes supported", (rBpp+gBpp+bBpp+aBpp)); - } - else - { - Color *pixels = LoadImageColors(*image); - - RL_FREE(image->data); // free old image data - - if ((image->format != PIXELFORMAT_UNCOMPRESSED_R8G8B8) && (image->format != PIXELFORMAT_UNCOMPRESSED_R8G8B8A8)) - { - TRACELOG(LOG_WARNING, "IMAGE: Format is already 16bpp or lower, dithering could have no effect"); - } - - // Define new image format, check if desired bpp match internal known format - if ((rBpp == 5) && (gBpp == 6) && (bBpp == 5) && (aBpp == 0)) image->format = PIXELFORMAT_UNCOMPRESSED_R5G6B5; - else if ((rBpp == 5) && (gBpp == 5) && (bBpp == 5) && (aBpp == 1)) image->format = PIXELFORMAT_UNCOMPRESSED_R5G5B5A1; - else if ((rBpp == 4) && (gBpp == 4) && (bBpp == 4) && (aBpp == 4)) image->format = PIXELFORMAT_UNCOMPRESSED_R4G4B4A4; - else - { - image->format = 0; - TRACELOG(LOG_WARNING, "IMAGE: Unsupported dithered OpenGL internal format: %ibpp (R%iG%iB%iA%i)", (rBpp+gBpp+bBpp+aBpp), rBpp, gBpp, bBpp, aBpp); - } - - // NOTE: We will store the dithered data as unsigned short (16bpp) - image->data = (unsigned short *)RL_MALLOC(image->width*image->height*sizeof(unsigned short)); - - Color oldPixel = WHITE; - Color newPixel = WHITE; - - int rError, gError, bError; - unsigned short rPixel, gPixel, bPixel, aPixel; // Used for 16bit pixel composition - - #define MIN(a,b) (((a)<(b))?(a):(b)) - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - oldPixel = pixels[y*image->width + x]; - - // NOTE: New pixel obtained by bits truncate, it would be better to round values (check ImageFormat()) - newPixel.r = oldPixel.r >> (8 - rBpp); // R bits - newPixel.g = oldPixel.g >> (8 - gBpp); // G bits - newPixel.b = oldPixel.b >> (8 - bBpp); // B bits - newPixel.a = oldPixel.a >> (8 - aBpp); // A bits (not used on dithering) - - // NOTE: Error must be computed between new and old pixel but using same number of bits! - // We want to know how much color precision we have lost... - rError = (int)oldPixel.r - (int)(newPixel.r << (8 - rBpp)); - gError = (int)oldPixel.g - (int)(newPixel.g << (8 - gBpp)); - bError = (int)oldPixel.b - (int)(newPixel.b << (8 - bBpp)); - - pixels[y*image->width + x] = newPixel; - - // NOTE: Some cases are out of the array and should be ignored - if (x < (image->width - 1)) - { - pixels[y*image->width + x+1].r = MIN((int)pixels[y*image->width + x+1].r + (int)((float)rError*7.0f/16), 0xff); - pixels[y*image->width + x+1].g = MIN((int)pixels[y*image->width + x+1].g + (int)((float)gError*7.0f/16), 0xff); - pixels[y*image->width + x+1].b = MIN((int)pixels[y*image->width + x+1].b + (int)((float)bError*7.0f/16), 0xff); - } - - if ((x > 0) && (y < (image->height - 1))) - { - pixels[(y+1)*image->width + x-1].r = MIN((int)pixels[(y+1)*image->width + x-1].r + (int)((float)rError*3.0f/16), 0xff); - pixels[(y+1)*image->width + x-1].g = MIN((int)pixels[(y+1)*image->width + x-1].g + (int)((float)gError*3.0f/16), 0xff); - pixels[(y+1)*image->width + x-1].b = MIN((int)pixels[(y+1)*image->width + x-1].b + (int)((float)bError*3.0f/16), 0xff); - } - - if (y < (image->height - 1)) - { - pixels[(y+1)*image->width + x].r = MIN((int)pixels[(y+1)*image->width + x].r + (int)((float)rError*5.0f/16), 0xff); - pixels[(y+1)*image->width + x].g = MIN((int)pixels[(y+1)*image->width + x].g + (int)((float)gError*5.0f/16), 0xff); - pixels[(y+1)*image->width + x].b = MIN((int)pixels[(y+1)*image->width + x].b + (int)((float)bError*5.0f/16), 0xff); - } - - if ((x < (image->width - 1)) && (y < (image->height - 1))) - { - pixels[(y+1)*image->width + x+1].r = MIN((int)pixels[(y+1)*image->width + x+1].r + (int)((float)rError*1.0f/16), 0xff); - pixels[(y+1)*image->width + x+1].g = MIN((int)pixels[(y+1)*image->width + x+1].g + (int)((float)gError*1.0f/16), 0xff); - pixels[(y+1)*image->width + x+1].b = MIN((int)pixels[(y+1)*image->width + x+1].b + (int)((float)bError*1.0f/16), 0xff); - } - - rPixel = (unsigned short)newPixel.r; - gPixel = (unsigned short)newPixel.g; - bPixel = (unsigned short)newPixel.b; - aPixel = (unsigned short)newPixel.a; - - ((unsigned short *)image->data)[y*image->width + x] = (rPixel << (gBpp + bBpp + aBpp)) | (gPixel << (bBpp + aBpp)) | (bPixel << aBpp) | aPixel; - } - } - - UnloadImageColors(pixels); - } -} - -// Flip image vertically -void ImageFlipVertical(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else - { - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - unsigned char *flippedData = (unsigned char *)RL_MALLOC(image->width*image->height*bytesPerPixel); - - for (int i = (image->height - 1), offsetSize = 0; i >= 0; i--) - { - memcpy(flippedData + offsetSize, ((unsigned char *)image->data) + i*image->width*bytesPerPixel, image->width*bytesPerPixel); - offsetSize += image->width*bytesPerPixel; - } - - RL_FREE(image->data); - image->data = flippedData; - } -} - -// Flip image horizontally -void ImageFlipHorizontal(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else - { - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - unsigned char *flippedData = (unsigned char *)RL_MALLOC(image->width*image->height*bytesPerPixel); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - // OPTION 1: Move pixels with memcopy() - //memcpy(flippedData + (y*image->width + x)*bytesPerPixel, ((unsigned char *)image->data) + (y*image->width + (image->width - 1 - x))*bytesPerPixel, bytesPerPixel); - - // OPTION 2: Just copy data pixel by pixel - for (int i = 0; i < bytesPerPixel; i++) flippedData[(y*image->width + x)*bytesPerPixel + i] = ((unsigned char *)image->data)[(y*image->width + (image->width - 1 - x))*bytesPerPixel + i]; - } - } - - RL_FREE(image->data); - image->data = flippedData; - - /* - // OPTION 3: Faster implementation (specific for 32bit pixels) - // NOTE: It does not require additional allocations - uint32_t *ptr = (uint32_t *)image->data; - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width/2; x++) - { - uint32_t backup = ptr[y*image->width + x]; - ptr[y*image->width + x] = ptr[y*image->width + (image->width - 1 - x)]; - ptr[y*image->width + (image->width - 1 - x)] = backup; - } - } - */ - } -} - -// Rotate image clockwise 90deg -void ImageRotateCW(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else - { - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - unsigned char *rotatedData = (unsigned char *)RL_MALLOC(image->width*image->height*bytesPerPixel); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - //memcpy(rotatedData + (x*image->height + (image->height - y - 1))*bytesPerPixel, ((unsigned char *)image->data) + (y*image->width + x)*bytesPerPixel, bytesPerPixel); - for (int i = 0; i < bytesPerPixel; i++) rotatedData[(x*image->height + (image->height - y - 1))*bytesPerPixel + i] = ((unsigned char *)image->data)[(y*image->width + x)*bytesPerPixel + i]; - } - } - - RL_FREE(image->data); - image->data = rotatedData; - int width = image->width; - int height = image-> height; - - image->width = height; - image->height = width; - } -} - -// Rotate image counter-clockwise 90deg -void ImageRotateCCW(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (image->mipmaps > 1) TRACELOG(LOG_WARNING, "Image manipulation only applied to base mipmap level"); - if (image->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image manipulation not supported for compressed formats"); - else - { - int bytesPerPixel = GetPixelDataSize(1, 1, image->format); - unsigned char *rotatedData = (unsigned char *)RL_MALLOC(image->width*image->height*bytesPerPixel); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - //memcpy(rotatedData + (x*image->height + y))*bytesPerPixel, ((unsigned char *)image->data) + (y*image->width + (image->width - x - 1))*bytesPerPixel, bytesPerPixel); - for (int i = 0; i < bytesPerPixel; i++) rotatedData[(x*image->height + y)*bytesPerPixel + i] = ((unsigned char *)image->data)[(y*image->width + (image->width - x - 1))*bytesPerPixel + i]; - } - } - - RL_FREE(image->data); - image->data = rotatedData; - int width = image->width; - int height = image-> height; - - image->width = height; - image->height = width; - } -} - -// Modify image color: tint -void ImageColorTint(Image *image, Color color) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - Color *pixels = LoadImageColors(*image); - - float cR = (float)color.r/255; - float cG = (float)color.g/255; - float cB = (float)color.b/255; - float cA = (float)color.a/255; - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - int index = y*image->width + x; - unsigned char r = (unsigned char)(((float)pixels[index].r/255*cR)*255.0f); - unsigned char g = (unsigned char)(((float)pixels[index].g/255*cG)*255.0f); - unsigned char b = (unsigned char)(((float)pixels[index].b/255*cB)*255.0f); - unsigned char a = (unsigned char)(((float)pixels[index].a/255*cA)*255.0f); - - pixels[y*image->width + x].r = r; - pixels[y*image->width + x].g = g; - pixels[y*image->width + x].b = b; - pixels[y*image->width + x].a = a; - } - } - - int format = image->format; - RL_FREE(image->data); - - image->data = pixels; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); -} - -// Modify image color: invert -void ImageColorInvert(Image *image) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - Color *pixels = LoadImageColors(*image); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - pixels[y*image->width + x].r = 255 - pixels[y*image->width + x].r; - pixels[y*image->width + x].g = 255 - pixels[y*image->width + x].g; - pixels[y*image->width + x].b = 255 - pixels[y*image->width + x].b; - } - } - - int format = image->format; - RL_FREE(image->data); - - image->data = pixels; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); -} - -// Modify image color: grayscale -void ImageColorGrayscale(Image *image) -{ - ImageFormat(image, PIXELFORMAT_UNCOMPRESSED_GRAYSCALE); -} - -// Modify image color: contrast -// NOTE: Contrast values between -100 and 100 -void ImageColorContrast(Image *image, float contrast) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (contrast < -100) contrast = -100; - if (contrast > 100) contrast = 100; - - contrast = (100.0f + contrast)/100.0f; - contrast *= contrast; - - Color *pixels = LoadImageColors(*image); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - float pR = (float)pixels[y*image->width + x].r/255.0f; - pR -= 0.5; - pR *= contrast; - pR += 0.5; - pR *= 255; - if (pR < 0) pR = 0; - if (pR > 255) pR = 255; - - float pG = (float)pixels[y*image->width + x].g/255.0f; - pG -= 0.5; - pG *= contrast; - pG += 0.5; - pG *= 255; - if (pG < 0) pG = 0; - if (pG > 255) pG = 255; - - float pB = (float)pixels[y*image->width + x].b/255.0f; - pB -= 0.5; - pB *= contrast; - pB += 0.5; - pB *= 255; - if (pB < 0) pB = 0; - if (pB > 255) pB = 255; - - pixels[y*image->width + x].r = (unsigned char)pR; - pixels[y*image->width + x].g = (unsigned char)pG; - pixels[y*image->width + x].b = (unsigned char)pB; - } - } - - int format = image->format; - RL_FREE(image->data); - - image->data = pixels; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); -} - -// Modify image color: brightness -// NOTE: Brightness values between -255 and 255 -void ImageColorBrightness(Image *image, int brightness) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - if (brightness < -255) brightness = -255; - if (brightness > 255) brightness = 255; - - Color *pixels = LoadImageColors(*image); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - int cR = pixels[y*image->width + x].r + brightness; - int cG = pixels[y*image->width + x].g + brightness; - int cB = pixels[y*image->width + x].b + brightness; - - if (cR < 0) cR = 1; - if (cR > 255) cR = 255; - - if (cG < 0) cG = 1; - if (cG > 255) cG = 255; - - if (cB < 0) cB = 1; - if (cB > 255) cB = 255; - - pixels[y*image->width + x].r = (unsigned char)cR; - pixels[y*image->width + x].g = (unsigned char)cG; - pixels[y*image->width + x].b = (unsigned char)cB; - } - } - - int format = image->format; - RL_FREE(image->data); - - image->data = pixels; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); -} - -// Modify image color: replace color -void ImageColorReplace(Image *image, Color color, Color replace) -{ - // Security check to avoid program crash - if ((image->data == NULL) || (image->width == 0) || (image->height == 0)) return; - - Color *pixels = LoadImageColors(*image); - - for (int y = 0; y < image->height; y++) - { - for (int x = 0; x < image->width; x++) - { - if ((pixels[y*image->width + x].r == color.r) && - (pixels[y*image->width + x].g == color.g) && - (pixels[y*image->width + x].b == color.b) && - (pixels[y*image->width + x].a == color.a)) - { - pixels[y*image->width + x].r = replace.r; - pixels[y*image->width + x].g = replace.g; - pixels[y*image->width + x].b = replace.b; - pixels[y*image->width + x].a = replace.a; - } - } - } - - int format = image->format; - RL_FREE(image->data); - - image->data = pixels; - image->format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - - ImageFormat(image, format); -} -#endif // SUPPORT_IMAGE_MANIPULATION - -// Load color data from image as a Color array (RGBA - 32bit) -// NOTE: Memory allocated should be freed using UnloadImageColors(); -Color *LoadImageColors(Image image) -{ - if ((image.width == 0) || (image.height == 0)) return NULL; - - Color *pixels = (Color *)RL_MALLOC(image.width*image.height*sizeof(Color)); - - if (image.format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "IMAGE: Pixel data retrieval not supported for compressed image formats"); - else - { - if ((image.format == PIXELFORMAT_UNCOMPRESSED_R32) || - (image.format == PIXELFORMAT_UNCOMPRESSED_R32G32B32) || - (image.format == PIXELFORMAT_UNCOMPRESSED_R32G32B32A32)) TRACELOG(LOG_WARNING, "IMAGE: Pixel format converted from 32bit to 8bit per channel"); - - for (int i = 0, k = 0; i < image.width*image.height; i++) - { - switch (image.format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: - { - pixels[i].r = ((unsigned char *)image.data)[i]; - pixels[i].g = ((unsigned char *)image.data)[i]; - pixels[i].b = ((unsigned char *)image.data)[i]; - pixels[i].a = 255; - - } break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - { - pixels[i].r = ((unsigned char *)image.data)[k]; - pixels[i].g = ((unsigned char *)image.data)[k]; - pixels[i].b = ((unsigned char *)image.data)[k]; - pixels[i].a = ((unsigned char *)image.data)[k + 1]; - - k += 2; - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - unsigned short pixel = ((unsigned short *)image.data)[i]; - - pixels[i].r = (unsigned char)((float)((pixel & 0b1111100000000000) >> 11)*(255/31)); - pixels[i].g = (unsigned char)((float)((pixel & 0b0000011111000000) >> 6)*(255/31)); - pixels[i].b = (unsigned char)((float)((pixel & 0b0000000000111110) >> 1)*(255/31)); - pixels[i].a = (unsigned char)((pixel & 0b0000000000000001)*255); - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - { - unsigned short pixel = ((unsigned short *)image.data)[i]; - - pixels[i].r = (unsigned char)((float)((pixel & 0b1111100000000000) >> 11)*(255/31)); - pixels[i].g = (unsigned char)((float)((pixel & 0b0000011111100000) >> 5)*(255/63)); - pixels[i].b = (unsigned char)((float)(pixel & 0b0000000000011111)*(255/31)); - pixels[i].a = 255; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - unsigned short pixel = ((unsigned short *)image.data)[i]; - - pixels[i].r = (unsigned char)((float)((pixel & 0b1111000000000000) >> 12)*(255/15)); - pixels[i].g = (unsigned char)((float)((pixel & 0b0000111100000000) >> 8)*(255/15)); - pixels[i].b = (unsigned char)((float)((pixel & 0b0000000011110000) >> 4)*(255/15)); - pixels[i].a = (unsigned char)((float)(pixel & 0b0000000000001111)*(255/15)); - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: - { - pixels[i].r = ((unsigned char *)image.data)[k]; - pixels[i].g = ((unsigned char *)image.data)[k + 1]; - pixels[i].b = ((unsigned char *)image.data)[k + 2]; - pixels[i].a = ((unsigned char *)image.data)[k + 3]; - - k += 4; - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: - { - pixels[i].r = (unsigned char)((unsigned char *)image.data)[k]; - pixels[i].g = (unsigned char)((unsigned char *)image.data)[k + 1]; - pixels[i].b = (unsigned char)((unsigned char *)image.data)[k + 2]; - pixels[i].a = 255; - - k += 3; - } break; - case PIXELFORMAT_UNCOMPRESSED_R32: - { - pixels[i].r = (unsigned char)(((float *)image.data)[k]*255.0f); - pixels[i].g = 0; - pixels[i].b = 0; - pixels[i].a = 255; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: - { - pixels[i].r = (unsigned char)(((float *)image.data)[k]*255.0f); - pixels[i].g = (unsigned char)(((float *)image.data)[k + 1]*255.0f); - pixels[i].b = (unsigned char)(((float *)image.data)[k + 2]*255.0f); - pixels[i].a = 255; - - k += 3; - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: - { - pixels[i].r = (unsigned char)(((float *)image.data)[k]*255.0f); - pixels[i].g = (unsigned char)(((float *)image.data)[k]*255.0f); - pixels[i].b = (unsigned char)(((float *)image.data)[k]*255.0f); - pixels[i].a = (unsigned char)(((float *)image.data)[k]*255.0f); - - k += 4; - } break; - default: break; - } - } - } - - return pixels; -} - -// Load colors palette from image as a Color array (RGBA - 32bit) -// NOTE: Memory allocated should be freed using UnloadImagePalette() -Color *LoadImagePalette(Image image, int maxPaletteSize, int *colorsCount) -{ - #define COLOR_EQUAL(col1, col2) ((col1.r == col2.r)&&(col1.g == col2.g)&&(col1.b == col2.b)&&(col1.a == col2.a)) - - int palCount = 0; - Color *palette = NULL; - Color *pixels = LoadImageColors(image); - - if (pixels != NULL) - { - palette = (Color *)RL_MALLOC(maxPaletteSize*sizeof(Color)); - - for (int i = 0; i < maxPaletteSize; i++) palette[i] = BLANK; // Set all colors to BLANK - - for (int i = 0; i < image.width*image.height; i++) - { - if (pixels[i].a > 0) - { - bool colorInPalette = false; - - // Check if the color is already on palette - for (int j = 0; j < maxPaletteSize; j++) - { - if (COLOR_EQUAL(pixels[i], palette[j])) - { - colorInPalette = true; - break; - } - } - - // Store color if not on the palette - if (!colorInPalette) - { - palette[palCount] = pixels[i]; // Add pixels[i] to palette - palCount++; - - // We reached the limit of colors supported by palette - if (palCount >= maxPaletteSize) - { - i = image.width*image.height; // Finish palette get - TRACELOG(LOG_WARNING, "IMAGE: Palette is greater than %i colors", maxPaletteSize); - } - } - } - } - - UnloadImageColors(pixels); - } - - *colorsCount = palCount; - - return palette; -} - -// Unload color data loaded with LoadImageColors() -void UnloadImageColors(Color *colors) -{ - RL_FREE(colors); -} - -// Unload colors palette loaded with LoadImagePalette() -void UnloadImagePalette(Color *colors) -{ - RL_FREE(colors); -} - -// Get pixel data from image as Vector4 array (float normalized) -static Vector4 *LoadImageDataNormalized(Image image) -{ - Vector4 *pixels = (Vector4 *)RL_MALLOC(image.width*image.height*sizeof(Vector4)); - - if (image.format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "IMAGE: Pixel data retrieval not supported for compressed image formats"); - else - { - for (int i = 0, k = 0; i < image.width*image.height; i++) - { - switch (image.format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: - { - pixels[i].x = (float)((unsigned char *)image.data)[i]/255.0f; - pixels[i].y = (float)((unsigned char *)image.data)[i]/255.0f; - pixels[i].z = (float)((unsigned char *)image.data)[i]/255.0f; - pixels[i].w = 1.0f; - - } break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - { - pixels[i].x = (float)((unsigned char *)image.data)[k]/255.0f; - pixels[i].y = (float)((unsigned char *)image.data)[k]/255.0f; - pixels[i].z = (float)((unsigned char *)image.data)[k]/255.0f; - pixels[i].w = (float)((unsigned char *)image.data)[k + 1]/255.0f; - - k += 2; - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - unsigned short pixel = ((unsigned short *)image.data)[i]; - - pixels[i].x = (float)((pixel & 0b1111100000000000) >> 11)*(1.0f/31); - pixels[i].y = (float)((pixel & 0b0000011111000000) >> 6)*(1.0f/31); - pixels[i].z = (float)((pixel & 0b0000000000111110) >> 1)*(1.0f/31); - pixels[i].w = ((pixel & 0b0000000000000001) == 0)? 0.0f : 1.0f; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - { - unsigned short pixel = ((unsigned short *)image.data)[i]; - - pixels[i].x = (float)((pixel & 0b1111100000000000) >> 11)*(1.0f/31); - pixels[i].y = (float)((pixel & 0b0000011111100000) >> 5)*(1.0f/63); - pixels[i].z = (float)(pixel & 0b0000000000011111)*(1.0f/31); - pixels[i].w = 1.0f; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - unsigned short pixel = ((unsigned short *)image.data)[i]; - - pixels[i].x = (float)((pixel & 0b1111000000000000) >> 12)*(1.0f/15); - pixels[i].y = (float)((pixel & 0b0000111100000000) >> 8)*(1.0f/15); - pixels[i].z = (float)((pixel & 0b0000000011110000) >> 4)*(1.0f/15); - pixels[i].w = (float)(pixel & 0b0000000000001111)*(1.0f/15); - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: - { - pixels[i].x = (float)((unsigned char *)image.data)[k]/255.0f; - pixels[i].y = (float)((unsigned char *)image.data)[k + 1]/255.0f; - pixels[i].z = (float)((unsigned char *)image.data)[k + 2]/255.0f; - pixels[i].w = (float)((unsigned char *)image.data)[k + 3]/255.0f; - - k += 4; - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: - { - pixels[i].x = (float)((unsigned char *)image.data)[k]/255.0f; - pixels[i].y = (float)((unsigned char *)image.data)[k + 1]/255.0f; - pixels[i].z = (float)((unsigned char *)image.data)[k + 2]/255.0f; - pixels[i].w = 1.0f; - - k += 3; - } break; - case PIXELFORMAT_UNCOMPRESSED_R32: - { - pixels[i].x = ((float *)image.data)[k]; - pixels[i].y = 0.0f; - pixels[i].z = 0.0f; - pixels[i].w = 1.0f; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: - { - pixels[i].x = ((float *)image.data)[k]; - pixels[i].y = ((float *)image.data)[k + 1]; - pixels[i].z = ((float *)image.data)[k + 2]; - pixels[i].w = 1.0f; - - k += 3; - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: - { - pixels[i].x = ((float *)image.data)[k]; - pixels[i].y = ((float *)image.data)[k + 1]; - pixels[i].z = ((float *)image.data)[k + 2]; - pixels[i].w = ((float *)image.data)[k + 3]; - - k += 4; - } - default: break; - } - } - } - - return pixels; -} - -// Get image alpha border rectangle -// NOTE: Threshold is defined as a percentatge: 0.0f -> 1.0f -Rectangle GetImageAlphaBorder(Image image, float threshold) -{ - Rectangle crop = { 0 }; - - Color *pixels = LoadImageColors(image); - - if (pixels != NULL) - { - int xMin = 65536; // Define a big enough number - int xMax = 0; - int yMin = 65536; - int yMax = 0; - - for (int y = 0; y < image.height; y++) - { - for (int x = 0; x < image.width; x++) - { - if (pixels[y*image.width + x].a > (unsigned char)(threshold*255.0f)) - { - if (x < xMin) xMin = x; - if (x > xMax) xMax = x; - if (y < yMin) yMin = y; - if (y > yMax) yMax = y; - } - } - } - - // Check for empty blank image - if ((xMin != 65536) && (xMax != 65536)) - { - crop = (Rectangle){ (float)xMin, (float)yMin, (float)((xMax + 1) - xMin), (float)((yMax + 1) - yMin) }; - } - - UnloadImageColors(pixels); - } - - return crop; -} - -//------------------------------------------------------------------------------------ -// Image drawing functions -//------------------------------------------------------------------------------------ -// Clear image background with given color -void ImageClearBackground(Image *dst, Color color) -{ - for (int i = 0; i < dst->width*dst->height; ++i) ImageDrawPixel(dst, i%dst->width, i/dst->width, color); -} - -// Draw pixel within an image -// NOTE: Compressed image formats not supported -void ImageDrawPixel(Image *dst, int x, int y, Color color) -{ - // Security check to avoid program crash - if ((dst->data == NULL) || (x < 0) || (x >= dst->width) || (y < 0) || (y >= dst->height)) return; - - switch (dst->format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: - { - // NOTE: Calculate grayscale equivalent color - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f); - - ((unsigned char *)dst->data)[y*dst->width + x] = gray; - - } break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - { - // NOTE: Calculate grayscale equivalent color - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f); - - ((unsigned char *)dst->data)[(y*dst->width + x)*2] = gray; - ((unsigned char *)dst->data)[(y*dst->width + x)*2 + 1] = color.a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - { - // NOTE: Calculate R5G6B5 equivalent color - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - - unsigned char r = (unsigned char)(round(coln.x*31.0f)); - unsigned char g = (unsigned char)(round(coln.y*63.0f)); - unsigned char b = (unsigned char)(round(coln.z*31.0f)); - - ((unsigned short *)dst->data)[y*dst->width + x] = (unsigned short)r << 11 | (unsigned short)g << 5 | (unsigned short)b; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - // NOTE: Calculate R5G5B5A1 equivalent color - Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f }; - - unsigned char r = (unsigned char)(round(coln.x*31.0f)); - unsigned char g = (unsigned char)(round(coln.y*31.0f)); - unsigned char b = (unsigned char)(round(coln.z*31.0f)); - unsigned char a = (coln.w > ((float)PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD/255.0f))? 1 : 0;; - - ((unsigned short *)dst->data)[y*dst->width + x] = (unsigned short)r << 11 | (unsigned short)g << 6 | (unsigned short)b << 1 | (unsigned short)a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - // NOTE: Calculate R5G5B5A1 equivalent color - Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f }; - - unsigned char r = (unsigned char)(round(coln.x*15.0f)); - unsigned char g = (unsigned char)(round(coln.y*15.0f)); - unsigned char b = (unsigned char)(round(coln.z*15.0f)); - unsigned char a = (unsigned char)(round(coln.w*15.0f)); - - ((unsigned short *)dst->data)[y*dst->width + x] = (unsigned short)r << 12 | (unsigned short)g << 8 | (unsigned short)b << 4 | (unsigned short)a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: - { - ((unsigned char *)dst->data)[(y*dst->width + x)*3] = color.r; - ((unsigned char *)dst->data)[(y*dst->width + x)*3 + 1] = color.g; - ((unsigned char *)dst->data)[(y*dst->width + x)*3 + 2] = color.b; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: - { - ((unsigned char *)dst->data)[(y*dst->width + x)*4] = color.r; - ((unsigned char *)dst->data)[(y*dst->width + x)*4 + 1] = color.g; - ((unsigned char *)dst->data)[(y*dst->width + x)*4 + 2] = color.b; - ((unsigned char *)dst->data)[(y*dst->width + x)*4 + 3] = color.a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R32: - { - // NOTE: Calculate grayscale equivalent color (normalized to 32bit) - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - - ((float *)dst->data)[y*dst->width + x] = coln.x*0.299f + coln.y*0.587f + coln.z*0.114f; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32: - { - // NOTE: Calculate R32G32B32 equivalent color (normalized to 32bit) - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - - ((float *)dst->data)[(y*dst->width + x)*3] = coln.x; - ((float *)dst->data)[(y*dst->width + x)*3 + 1] = coln.y; - ((float *)dst->data)[(y*dst->width + x)*3 + 2] = coln.z; - } break; - case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: - { - // NOTE: Calculate R32G32B32A32 equivalent color (normalized to 32bit) - Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f }; - - ((float *)dst->data)[(y*dst->width + x)*4] = coln.x; - ((float *)dst->data)[(y*dst->width + x)*4 + 1] = coln.y; - ((float *)dst->data)[(y*dst->width + x)*4 + 2] = coln.z; - ((float *)dst->data)[(y*dst->width + x)*4 + 3] = coln.w; - - } break; - default: break; - } -} - -// Draw pixel within an image (Vector version) -void ImageDrawPixelV(Image *dst, Vector2 position, Color color) -{ - ImageDrawPixel(dst, (int)position.x, (int)position.y, color); -} - -// Draw line within an image -void ImageDrawLine(Image *dst, int startPosX, int startPosY, int endPosX, int endPosY, Color color) -{ - int m = 2*(endPosY - startPosY); - int slopeError = m - (endPosX - startPosX); - - for (int x = startPosX, y = startPosY; x <= endPosX; x++) - { - ImageDrawPixel(dst, x, y, color); - slopeError += m; - - if (slopeError >= 0) - { - y++; - slopeError -= 2*(endPosX - startPosX); - } - } -} - -// Draw line within an image (Vector version) -void ImageDrawLineV(Image *dst, Vector2 start, Vector2 end, Color color) -{ - ImageDrawLine(dst, (int)start.x, (int)start.y, (int)end.x, (int)end.y, color); -} - -// Draw circle within an image -void ImageDrawCircle(Image *dst, int centerX, int centerY, int radius, Color color) -{ - int x = 0, y = radius; - int decesionParameter = 3 - 2*radius; - - while (y >= x) - { - ImageDrawPixel(dst, centerX + x, centerY + y, color); - ImageDrawPixel(dst, centerX - x, centerY + y, color); - ImageDrawPixel(dst, centerX + x, centerY - y, color); - ImageDrawPixel(dst, centerX - x, centerY - y, color); - ImageDrawPixel(dst, centerX + y, centerY + x, color); - ImageDrawPixel(dst, centerX - y, centerY + x, color); - ImageDrawPixel(dst, centerX + y, centerY - x, color); - ImageDrawPixel(dst, centerX - y, centerY - x, color); - x++; - - if (decesionParameter > 0) - { - y--; - decesionParameter = decesionParameter + 4*(x - y) + 10; - } - else decesionParameter = decesionParameter + 4*x + 6; - } -} - -// Draw circle within an image (Vector version) -void ImageDrawCircleV(Image *dst, Vector2 center, int radius, Color color) -{ - ImageDrawCircle(dst, (int)center.x, (int)center.y, radius, color); -} - -// Draw rectangle within an image -void ImageDrawRectangle(Image *dst, int posX, int posY, int width, int height, Color color) -{ - ImageDrawRectangleRec(dst, (Rectangle){ (float)posX, (float)posY, (float)width, (float)height }, color); -} - -// Draw rectangle within an image (Vector version) -void ImageDrawRectangleV(Image *dst, Vector2 position, Vector2 size, Color color) -{ - ImageDrawRectangle(dst, (int)position.x, (int)position.y, (int)size.x, (int)size.y, color); -} - -// Draw rectangle within an image -void ImageDrawRectangleRec(Image *dst, Rectangle rec, Color color) -{ - // Security check to avoid program crash - if ((dst->data == NULL) || (dst->width == 0) || (dst->height == 0)) return; - - int sy = (int)rec.y; - int ey = sy + (int)rec.height; - - int sx = (int)rec.x; - int ex = sx + (int)rec.width; - - for (int y = sy; y < ey; y++) - { - for (int x = sx; x < ex; x++) - { - ImageDrawPixel(dst, x, y, color); - } - } -} - -// Draw rectangle lines within an image -void ImageDrawRectangleLines(Image *dst, Rectangle rec, int thick, Color color) -{ - ImageDrawRectangle(dst, (int)rec.x, (int)rec.y, (int)rec.width, thick, color); - ImageDrawRectangle(dst, (int)rec.x, (int)(rec.y + thick), thick, (int)(rec.height - thick*2), color); - ImageDrawRectangle(dst, (int)(rec.x + rec.width - thick), (int)(rec.y + thick), thick, (int)(rec.height - thick*2), color); - ImageDrawRectangle(dst, (int)rec.x, (int)(rec.y + rec.height - thick), (int)rec.width, thick, color); -} - -// Draw an image (source) within an image (destination) -// NOTE: Color tint is applied to source image -void ImageDraw(Image *dst, Image src, Rectangle srcRec, Rectangle dstRec, Color tint) -{ - // Security check to avoid program crash - if ((dst->data == NULL) || (dst->width == 0) || (dst->height == 0) || - (src.data == NULL) || (src.width == 0) || (src.height == 0)) return; - - if (dst->mipmaps > 1) TRACELOG(LOG_WARNING, "Image drawing only applied to base mipmap level"); - if (dst->format >= PIXELFORMAT_COMPRESSED_DXT1_RGB) TRACELOG(LOG_WARNING, "Image drawing not supported for compressed formats"); - else - { - Image srcMod = { 0 }; // Source copy (in case it was required) - Image *srcPtr = &src; // Pointer to source image - bool useSrcMod = false; // Track source copy required - - // Source rectangle out-of-bounds security checks - if (srcRec.x < 0) { srcRec.width += srcRec.x; srcRec.x = 0; } - if (srcRec.y < 0) { srcRec.height += srcRec.y; srcRec.y = 0; } - if ((srcRec.x + srcRec.width) > src.width) srcRec.width = src.width - srcRec.x; - if ((srcRec.y + srcRec.height) > src.height) srcRec.height = src.height - srcRec.y; - - // Check if source rectangle needs to be resized to destination rectangle - // In that case, we make a copy of source and we apply all required transform - if (((int)srcRec.width != (int)dstRec.width) || ((int)srcRec.height != (int)dstRec.height)) - { - srcMod = ImageFromImage(src, srcRec); // Create image from another image - ImageResize(&srcMod, (int)dstRec.width, (int)dstRec.height); // Resize to destination rectangle - srcRec = (Rectangle){ 0, 0, (float)srcMod.width, (float)srcMod.height }; - - srcPtr = &srcMod; - useSrcMod = true; - } - - // Destination rectangle out-of-bounds security checks - if (dstRec.x < 0) - { - srcRec.x = -dstRec.x; - srcRec.width += dstRec.x; - dstRec.x = 0; - } - else if ((dstRec.x + srcRec.width) > dst->width) srcRec.width = dst->width - dstRec.x; - - if (dstRec.y < 0) - { - srcRec.y = -dstRec.y; - srcRec.height += dstRec.y; - dstRec.y = 0; - } - else if ((dstRec.y + srcRec.height) > dst->height) srcRec.height = dst->height - dstRec.y; - - if (dst->width < srcRec.width) srcRec.width = (float)dst->width; - if (dst->height < srcRec.height) srcRec.height = (float)dst->height; - - // This blitting method is quite fast! The process followed is: - // for every pixel -> [get_src_format/get_dst_format -> blend -> format_to_dst] - // Some optimization ideas: - // [x] Avoid creating source copy if not required (no resize required) - // [x] Optimize ImageResize() for pixel format (alternative: ImageResizeNN()) - // [x] Optimize ColorAlphaBlend() to avoid processing (alpha = 0) and (alpha = 1) - // [x] Optimize ColorAlphaBlend() for faster operations (maybe avoiding divs?) - // [x] Consider fast path: no alpha blending required cases (src has no alpha) - // [x] Consider fast path: same src/dst format with no alpha -> direct line copy - // [-] GetPixelColor(): Return Vector4 instead of Color, easier for ColorAlphaBlend() - - Color colSrc, colDst, blend; - bool blendRequired = true; - - // Fast path: Avoid blend if source has no alpha to blend - if ((tint.a == 255) && ((srcPtr->format == PIXELFORMAT_UNCOMPRESSED_GRAYSCALE) || (srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R8G8B8) || (srcPtr->format == PIXELFORMAT_UNCOMPRESSED_R5G6B5))) blendRequired = false; - - int strideDst = GetPixelDataSize(dst->width, 1, dst->format); - int bytesPerPixelDst = strideDst/(dst->width); - - int strideSrc = GetPixelDataSize(srcPtr->width, 1, srcPtr->format); - int bytesPerPixelSrc = strideSrc/(srcPtr->width); - - unsigned char *pSrcBase = (unsigned char *)srcPtr->data + ((int)srcRec.y*srcPtr->width + (int)srcRec.x)*bytesPerPixelSrc; - unsigned char *pDstBase = (unsigned char *)dst->data + ((int)dstRec.y*dst->width + (int)dstRec.x)*bytesPerPixelDst; - - for (int y = 0; y < (int)srcRec.height; y++) - { - unsigned char *pSrc = pSrcBase; - unsigned char *pDst = pDstBase; - - // Fast path: Avoid moving pixel by pixel if no blend required and same format - if (!blendRequired && (srcPtr->format == dst->format)) memcpy(pDst, pSrc, (int)(srcRec.width)*bytesPerPixelSrc); - else - { - for (int x = 0; x < (int)srcRec.width; x++) - { - colSrc = GetPixelColor(pSrc, srcPtr->format); - colDst = GetPixelColor(pDst, dst->format); - - // Fast path: Avoid blend if source has no alpha to blend - if (blendRequired) blend = ColorAlphaBlend(colDst, colSrc, tint); - else blend = colSrc; - - SetPixelColor(pDst, blend, dst->format); - - pDst += bytesPerPixelDst; - pSrc += bytesPerPixelSrc; - } - } - - pSrcBase += strideSrc; - pDstBase += strideDst; - } - - if (useSrcMod) UnloadImage(srcMod); // Unload source modified image - } -} - -// Draw text (default font) within an image (destination) -void ImageDrawText(Image *dst, const char *text, int posX, int posY, int fontSize, Color color) -{ - Vector2 position = { (float)posX, (float)posY }; - - // NOTE: For default font, sapcing is set to desired font size / default font size (10) - ImageDrawTextEx(dst, GetFontDefault(), text, position, (float)fontSize, (float)fontSize/10, color); -} - -// Draw text (custom sprite font) within an image (destination) -void ImageDrawTextEx(Image *dst, Font font, const char *text, Vector2 position, float fontSize, float spacing, Color tint) -{ - Image imText = ImageTextEx(font, text, fontSize, spacing, tint); - - Rectangle srcRec = { 0.0f, 0.0f, (float)imText.width, (float)imText.height }; - Rectangle dstRec = { position.x, position.y, (float)imText.width, (float)imText.height }; - - ImageDraw(dst, imText, srcRec, dstRec, WHITE); - - UnloadImage(imText); -} - -//------------------------------------------------------------------------------------ -// Texture loading functions -//------------------------------------------------------------------------------------ -// Load texture from file into GPU memory (VRAM) -Texture2D LoadTexture(const char *fileName) -{ - Texture2D texture = { 0 }; - - Image image = LoadImage(fileName); - - if (image.data != NULL) - { - texture = LoadTextureFromImage(image); - UnloadImage(image); - } - - return texture; -} - -// Load a texture from image data -// NOTE: image is not unloaded, it must be done manually -Texture2D LoadTextureFromImage(Image image) -{ - Texture2D texture = { 0 }; - - if ((image.data != NULL) && (image.width != 0) && (image.height != 0)) - { - texture.id = rlLoadTexture(image.data, image.width, image.height, image.format, image.mipmaps); - } - else TRACELOG(LOG_WARNING, "IMAGE: Data is not valid to load texture"); - - texture.width = image.width; - texture.height = image.height; - texture.mipmaps = image.mipmaps; - texture.format = image.format; - - return texture; -} - -// Load cubemap from image, multiple image cubemap layouts supported -TextureCubemap LoadTextureCubemap(Image image, int layout) -{ - TextureCubemap cubemap = { 0 }; - - if (layout == CUBEMAP_LAYOUT_AUTO_DETECT) // Try to automatically guess layout type - { - // Check image width/height to determine the type of cubemap provided - if (image.width > image.height) - { - if ((image.width/6) == image.height) { layout = CUBEMAP_LAYOUT_LINE_HORIZONTAL; cubemap.width = image.width/6; } - else if ((image.width/4) == (image.height/3)) { layout = CUBEMAP_LAYOUT_CROSS_FOUR_BY_THREE; cubemap.width = image.width/4; } - else if (image.width >= (int)((float)image.height*1.85f)) { layout = CUBEMAP_LAYOUT_PANORAMA; cubemap.width = image.width/4; } - } - else if (image.height > image.width) - { - if ((image.height/6) == image.width) { layout = CUBEMAP_LAYOUT_LINE_VERTICAL; cubemap.width = image.height/6; } - else if ((image.width/3) == (image.height/4)) { layout = CUBEMAP_LAYOUT_CROSS_THREE_BY_FOUR; cubemap.width = image.width/3; } - } - - cubemap.height = cubemap.width; - } - - if (layout != CUBEMAP_LAYOUT_AUTO_DETECT) - { - int size = cubemap.width; - - Image faces = { 0 }; // Vertical column image - Rectangle faceRecs[6] = { 0 }; // Face source rectangles - for (int i = 0; i < 6; i++) faceRecs[i] = (Rectangle){ 0, 0, (float)size, (float)size }; - - if (layout == CUBEMAP_LAYOUT_LINE_VERTICAL) - { - faces = image; - for (int i = 0; i < 6; i++) faceRecs[i].y = (float)size*i; - } - else if (layout == CUBEMAP_LAYOUT_PANORAMA) - { - // TODO: Convert panorama image to square faces... - // Ref: https://github.com/denivip/panorama/blob/master/panorama.cpp - } - else - { - if (layout == CUBEMAP_LAYOUT_LINE_HORIZONTAL) for (int i = 0; i < 6; i++) faceRecs[i].x = (float)size*i; - else if (layout == CUBEMAP_LAYOUT_CROSS_THREE_BY_FOUR) - { - faceRecs[0].x = (float)size; faceRecs[0].y = (float)size; - faceRecs[1].x = (float)size; faceRecs[1].y = (float)size*3; - faceRecs[2].x = (float)size; faceRecs[2].y = 0; - faceRecs[3].x = (float)size; faceRecs[3].y = (float)size*2; - faceRecs[4].x = 0; faceRecs[4].y = (float)size; - faceRecs[5].x = (float)size*2; faceRecs[5].y = (float)size; - } - else if (layout == CUBEMAP_LAYOUT_CROSS_FOUR_BY_THREE) - { - faceRecs[0].x = (float)size*2; faceRecs[0].y = (float)size; - faceRecs[1].x = 0; faceRecs[1].y = (float)size; - faceRecs[2].x = (float)size; faceRecs[2].y = 0; - faceRecs[3].x = (float)size; faceRecs[3].y = (float)size*2; - faceRecs[4].x = (float)size; faceRecs[4].y = (float)size; - faceRecs[5].x = (float)size*3; faceRecs[5].y = (float)size; - } - - // Convert image data to 6 faces in a vertical column, that's the optimum layout for loading - faces = GenImageColor(size, size*6, MAGENTA); - ImageFormat(&faces, image.format); - - // TODO: Image formating does not work with compressed textures! - } - - for (int i = 0; i < 6; i++) ImageDraw(&faces, image, faceRecs[i], (Rectangle){ 0, (float)size*i, (float)size, (float)size }, WHITE); - - cubemap.id = rlLoadTextureCubemap(faces.data, size, faces.format); - if (cubemap.id == 0) TRACELOG(LOG_WARNING, "IMAGE: Failed to load cubemap image"); - - UnloadImage(faces); - } - else TRACELOG(LOG_WARNING, "IMAGE: Failed to detect cubemap image layout"); - - return cubemap; -} - -// Load texture for rendering (framebuffer) -// NOTE: Render texture is loaded by default with RGBA color attachment and depth RenderBuffer -RenderTexture2D LoadRenderTexture(int width, int height) -{ - RenderTexture2D target = { 0 }; - - target.id = rlLoadFramebuffer(width, height); // Load an empty framebuffer - - if (target.id > 0) - { - rlEnableFramebuffer(target.id); - - // Create color texture (default to RGBA) - target.texture.id = rlLoadTexture(NULL, width, height, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, 1); - target.texture.width = width; - target.texture.height = height; - target.texture.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - target.texture.mipmaps = 1; - - // Create depth renderbuffer/texture - target.depth.id = rlLoadTextureDepth(width, height, true); - target.depth.width = width; - target.depth.height = height; - target.depth.format = 19; //DEPTH_COMPONENT_24BIT? - target.depth.mipmaps = 1; - - // Attach color texture and depth renderbuffer/texture to FBO - rlFramebufferAttach(target.id, target.texture.id, RL_ATTACHMENT_COLOR_CHANNEL0, RL_ATTACHMENT_TEXTURE2D, 0); - rlFramebufferAttach(target.id, target.depth.id, RL_ATTACHMENT_DEPTH, RL_ATTACHMENT_RENDERBUFFER, 0); - - // Check if fbo is complete with attachments (valid) - if (rlFramebufferComplete(target.id)) TRACELOG(LOG_INFO, "FBO: [ID %i] Framebuffer object created successfully", target.id); - - rlDisableFramebuffer(); - } - else TRACELOG(LOG_WARNING, "FBO: Framebuffer object can not be created"); - - return target; -} - -// Unload texture from GPU memory (VRAM) -void UnloadTexture(Texture2D texture) -{ - if (texture.id > 0) - { - rlUnloadTexture(texture.id); - - TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Unloaded texture data from VRAM (GPU)", texture.id); - } -} - -// Unload render texture from GPU memory (VRAM) -void UnloadRenderTexture(RenderTexture2D target) -{ - if (target.id > 0) - { - // Color texture attached to FBO is deleted - rlUnloadTexture(target.texture.id); - - // NOTE: Depth texture/renderbuffer is automatically - // queried and deleted before deleting framebuffer - rlUnloadFramebuffer(target.id); - } -} - -// Update GPU texture with new data -// NOTE: pixels data must match texture.format -void UpdateTexture(Texture2D texture, const void *pixels) -{ - rlUpdateTexture(texture.id, 0, 0, texture.width, texture.height, texture.format, pixels); -} - -// Update GPU texture rectangle with new data -// NOTE: pixels data must match texture.format -void UpdateTextureRec(Texture2D texture, Rectangle rec, const void *pixels) -{ - rlUpdateTexture(texture.id, (int)rec.x, (int)rec.y, (int)rec.width, (int)rec.height, texture.format, pixels); -} - -// Get pixel data from GPU texture and return an Image -// NOTE: Compressed texture formats not supported -Image GetTextureData(Texture2D texture) -{ - Image image = { 0 }; - - if (texture.format < PIXELFORMAT_COMPRESSED_DXT1_RGB) - { - image.data = rlReadTexturePixels(texture); - - if (image.data != NULL) - { - image.width = texture.width; - image.height = texture.height; - image.format = texture.format; - image.mipmaps = 1; - -#if defined(GRAPHICS_API_OPENGL_ES2) - // NOTE: Data retrieved on OpenGL ES 2.0 should be RGBA, - // coming from FBO color buffer attachment, but it seems - // original texture format is retrieved on RPI... - image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; -#endif - TRACELOG(LOG_INFO, "TEXTURE: [ID %i] Pixel data retrieved successfully", texture.id); - } - else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to retrieve pixel data", texture.id); - } - else TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] Failed to retrieve compressed pixel data", texture.id); - - return image; -} - -// Get pixel data from GPU frontbuffer and return an Image (screenshot) -Image GetScreenData(void) -{ - Image image = { 0 }; - - image.width = GetScreenWidth(); - image.height = GetScreenHeight(); - image.mipmaps = 1; - image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - image.data = rlReadScreenPixels(image.width, image.height); - - return image; -} - -//------------------------------------------------------------------------------------ -// Texture configuration functions -//------------------------------------------------------------------------------------ -// Generate GPU mipmaps for a texture -void GenTextureMipmaps(Texture2D *texture) -{ - // NOTE: NPOT textures support check inside function - // On WebGL (OpenGL ES 2.0) NPOT textures support is limited - rlGenerateMipmaps(texture); -} - -// Set texture scaling filter mode -void SetTextureFilter(Texture2D texture, int filter) -{ - switch (filter) - { - case TEXTURE_FILTER_POINT: - { - if (texture.mipmaps > 1) - { - // RL_TEXTURE_FILTER_MIP_NEAREST - tex filter: POINT, mipmaps filter: POINT (sharp switching between mipmaps) - rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_MIP_NEAREST); - - // RL_TEXTURE_FILTER_NEAREST - tex filter: POINT (no filter), no mipmaps - rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_NEAREST); - } - else - { - // RL_TEXTURE_FILTER_NEAREST - tex filter: POINT (no filter), no mipmaps - rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_NEAREST); - rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_NEAREST); - } - } break; - case TEXTURE_FILTER_BILINEAR: - { - if (texture.mipmaps > 1) - { - // RL_TEXTURE_FILTER_LINEAR_MIP_NEAREST - tex filter: BILINEAR, mipmaps filter: POINT (sharp switching between mipmaps) - // Alternative: RL_TEXTURE_FILTER_NEAREST_MIP_LINEAR - tex filter: POINT, mipmaps filter: BILINEAR (smooth transition between mipmaps) - rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_LINEAR_MIP_NEAREST); - - // RL_TEXTURE_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps - rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR); - } - else - { - // RL_TEXTURE_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps - rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_LINEAR); - rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR); - } - } break; - case TEXTURE_FILTER_TRILINEAR: - { - if (texture.mipmaps > 1) - { - // RL_TEXTURE_FILTER_MIP_LINEAR - tex filter: BILINEAR, mipmaps filter: BILINEAR (smooth transition between mipmaps) - rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_MIP_LINEAR); - - // RL_TEXTURE_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps - rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR); - } - else - { - TRACELOG(LOG_WARNING, "TEXTURE: [ID %i] No mipmaps available for TRILINEAR texture filtering", texture.id); - - // RL_TEXTURE_FILTER_LINEAR - tex filter: BILINEAR, no mipmaps - rlTextureParameters(texture.id, RL_TEXTURE_MIN_FILTER, RL_TEXTURE_FILTER_LINEAR); - rlTextureParameters(texture.id, RL_TEXTURE_MAG_FILTER, RL_TEXTURE_FILTER_LINEAR); - } - } break; - case TEXTURE_FILTER_ANISOTROPIC_4X: rlTextureParameters(texture.id, RL_TEXTURE_FILTER_ANISOTROPIC, 4); break; - case TEXTURE_FILTER_ANISOTROPIC_8X: rlTextureParameters(texture.id, RL_TEXTURE_FILTER_ANISOTROPIC, 8); break; - case TEXTURE_FILTER_ANISOTROPIC_16X: rlTextureParameters(texture.id, RL_TEXTURE_FILTER_ANISOTROPIC, 16); break; - default: break; - } -} - -// Set texture wrapping mode -void SetTextureWrap(Texture2D texture, int wrap) -{ - switch (wrap) - { - case TEXTURE_WRAP_REPEAT: - { - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_TEXTURE_WRAP_REPEAT); - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_TEXTURE_WRAP_REPEAT); - } break; - case TEXTURE_WRAP_CLAMP: - { - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_TEXTURE_WRAP_CLAMP); - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_TEXTURE_WRAP_CLAMP); - } break; - case TEXTURE_WRAP_MIRROR_REPEAT: - { - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_TEXTURE_WRAP_MIRROR_REPEAT); - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_TEXTURE_WRAP_MIRROR_REPEAT); - } break; - case TEXTURE_WRAP_MIRROR_CLAMP: - { - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_S, RL_TEXTURE_WRAP_MIRROR_CLAMP); - rlTextureParameters(texture.id, RL_TEXTURE_WRAP_T, RL_TEXTURE_WRAP_MIRROR_CLAMP); - } break; - default: break; - } -} - -//------------------------------------------------------------------------------------ -// Texture drawing functions -//------------------------------------------------------------------------------------ -// Draw a Texture2D -void DrawTexture(Texture2D texture, int posX, int posY, Color tint) -{ - DrawTextureEx(texture, (Vector2){ (float)posX, (float)posY }, 0.0f, 1.0f, tint); -} - -// Draw a Texture2D with position defined as Vector2 -void DrawTextureV(Texture2D texture, Vector2 position, Color tint) -{ - DrawTextureEx(texture, position, 0, 1.0f, tint); -} - -// Draw a Texture2D with extended parameters -void DrawTextureEx(Texture2D texture, Vector2 position, float rotation, float scale, Color tint) -{ - Rectangle source = { 0.0f, 0.0f, (float)texture.width, (float)texture.height }; - Rectangle dest = { position.x, position.y, (float)texture.width*scale, (float)texture.height*scale }; - Vector2 origin = { 0.0f, 0.0f }; - - DrawTexturePro(texture, source, dest, origin, rotation, tint); -} - -// Draw a part of a texture (defined by a rectangle) -void DrawTextureRec(Texture2D texture, Rectangle source, Vector2 position, Color tint) -{ - Rectangle dest = { position.x, position.y, fabsf(source.width), fabsf(source.height) }; - Vector2 origin = { 0.0f, 0.0f }; - - DrawTexturePro(texture, source, dest, origin, 0.0f, tint); -} - -// Draw texture quad with tiling and offset parameters -// NOTE: Tiling and offset should be provided considering normalized texture values [0..1] -// i.e tiling = { 1.0f, 1.0f } refers to all texture, offset = { 0.5f, 0.5f } moves texture origin to center -void DrawTextureQuad(Texture2D texture, Vector2 tiling, Vector2 offset, Rectangle quad, Color tint) -{ - Rectangle source = { offset.x*texture.width, offset.y*texture.height, tiling.x*texture.width, tiling.y*texture.height }; - Vector2 origin = { 0.0f, 0.0f }; - - DrawTexturePro(texture, source, quad, origin, 0.0f, tint); -} - -// Draw part of a texture (defined by a rectangle) with rotation and scale tiled into dest. -// NOTE: For tilling a whole texture DrawTextureQuad() is better -void DrawTextureTiled(Texture2D texture, Rectangle source, Rectangle dest, Vector2 origin, float rotation, float scale, Color tint) -{ - if ((texture.id <= 0) || (scale <= 0.0f)) return; // Wanna see a infinite loop?!...just delete this line! - - int tileWidth = (int)(source.width*scale), tileHeight = (int)(source.height*scale); - if ((dest.width < tileWidth) && (dest.height < tileHeight)) - { - // Can fit only one tile - DrawTexturePro(texture, (Rectangle){source.x, source.y, ((float)dest.width/tileWidth)*source.width, ((float)dest.height/tileHeight)*source.height}, - (Rectangle){dest.x, dest.y, dest.width, dest.height}, origin, rotation, tint); - } - else if (dest.width <= tileWidth) - { - // Tiled vertically (one column) - int dy = 0; - for (;dy+tileHeight < dest.height; dy += tileHeight) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, ((float)dest.width/tileWidth)*source.width, source.height}, (Rectangle){dest.x, dest.y + dy, dest.width, (float)tileHeight}, origin, rotation, tint); - } - - // Fit last tile - if (dy < dest.height) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, ((float)dest.width/tileWidth)*source.width, ((float)(dest.height - dy)/tileHeight)*source.height}, - (Rectangle){dest.x, dest.y + dy, dest.width, dest.height - dy}, origin, rotation, tint); - } - } - else if (dest.height <= tileHeight) - { - // Tiled horizontally (one row) - int dx = 0; - for (;dx+tileWidth < dest.width; dx += tileWidth) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, source.width, ((float)dest.height/tileHeight)*source.height}, (Rectangle){dest.x + dx, dest.y, (float)tileWidth, dest.height}, origin, rotation, tint); - } - - // Fit last tile - if (dx < dest.width) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, ((float)(dest.width - dx)/tileWidth)*source.width, ((float)dest.height/tileHeight)*source.height}, - (Rectangle){dest.x + dx, dest.y, dest.width - dx, dest.height}, origin, rotation, tint); - } - } - else - { - // Tiled both horizontally and vertically (rows and columns) - int dx = 0; - for (;dx+tileWidth < dest.width; dx += tileWidth) - { - int dy = 0; - for (;dy+tileHeight < dest.height; dy += tileHeight) - { - DrawTexturePro(texture, source, (Rectangle){dest.x + dx, dest.y + dy, (float)tileWidth, (float)tileHeight}, origin, rotation, tint); - } - - if (dy < dest.height) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, source.width, ((float)(dest.height - dy)/tileHeight)*source.height}, - (Rectangle){dest.x + dx, dest.y + dy, (float)tileWidth, dest.height - dy}, origin, rotation, tint); - } - } - - // Fit last column of tiles - if (dx < dest.width) - { - int dy = 0; - for (;dy+tileHeight < dest.height; dy += tileHeight) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, ((float)(dest.width - dx)/tileWidth)*source.width, source.height}, - (Rectangle){dest.x + dx, dest.y + dy, dest.width - dx, (float)tileHeight}, origin, rotation, tint); - } - - // Draw final tile in the bottom right corner - if (dy < dest.height) - { - DrawTexturePro(texture, (Rectangle){source.x, source.y, ((float)(dest.width - dx)/tileWidth)*source.width, ((float)(dest.height - dy)/tileHeight)*source.height}, - (Rectangle){dest.x + dx, dest.y + dy, dest.width - dx, dest.height - dy}, origin, rotation, tint); - } - } - } -} - -// Draw a part of a texture (defined by a rectangle) with 'pro' parameters -// NOTE: origin is relative to destination rectangle size -void DrawTexturePro(Texture2D texture, Rectangle source, Rectangle dest, Vector2 origin, float rotation, Color tint) -{ - // Check if texture is valid - if (texture.id > 0) - { - float width = (float)texture.width; - float height = (float)texture.height; - - bool flipX = false; - - if (source.width < 0) { flipX = true; source.width *= -1; } - if (source.height < 0) source.y -= source.height; - - Vector2 topLeft = { 0 }; - Vector2 topRight = { 0 }; - Vector2 bottomLeft = { 0 }; - Vector2 bottomRight = { 0 }; - - // Only calculate rotation if needed - if (rotation == 0.0f) - { - float x = dest.x - origin.x; - float y = dest.y - origin.y; - topLeft = (Vector2){ x, y }; - topRight = (Vector2){ x + dest.width, y }; - bottomLeft = (Vector2){ x, y + dest.height }; - bottomRight = (Vector2){ x + dest.width, y + dest.height }; - } - else - { - float sinRotation = sinf(rotation*DEG2RAD); - float cosRotation = cosf(rotation*DEG2RAD); - float x = dest.x; - float y = dest.y; - float dx = -origin.x; - float dy = -origin.y; - - topLeft.x = x + dx*cosRotation - dy*sinRotation; - topLeft.y = y + dx*sinRotation + dy*cosRotation; - - topRight.x = x + (dx + dest.width)*cosRotation - dy*sinRotation; - topRight.y = y + (dx + dest.width)*sinRotation + dy*cosRotation; - - bottomLeft.x = x + dx*cosRotation - (dy + dest.height)*sinRotation; - bottomLeft.y = y + dx*sinRotation + (dy + dest.height)*cosRotation; - - bottomRight.x = x + (dx + dest.width)*cosRotation - (dy + dest.height)*sinRotation; - bottomRight.y = y + (dx + dest.width)*sinRotation + (dy + dest.height)*cosRotation; - } - - rlCheckRenderBatchLimit(4); // Make sure there is enough free space on the batch buffer - - rlSetTexture(texture.id); - rlBegin(RL_QUADS); - - rlColor4ub(tint.r, tint.g, tint.b, tint.a); - rlNormal3f(0.0f, 0.0f, 1.0f); // Normal vector pointing towards viewer - - // Top-left corner for texture and quad - if (flipX) rlTexCoord2f((source.x + source.width)/width, source.y/height); - else rlTexCoord2f(source.x/width, source.y/height); - rlVertex2f(topLeft.x, topLeft.y); - - // Bottom-left corner for texture and quad - if (flipX) rlTexCoord2f((source.x + source.width)/width, (source.y + source.height)/height); - else rlTexCoord2f(source.x/width, (source.y + source.height)/height); - rlVertex2f(bottomLeft.x, bottomLeft.y); - - // Bottom-right corner for texture and quad - if (flipX) rlTexCoord2f(source.x/width, (source.y + source.height)/height); - else rlTexCoord2f((source.x + source.width)/width, (source.y + source.height)/height); - rlVertex2f(bottomRight.x, bottomRight.y); - - // Top-right corner for texture and quad - if (flipX) rlTexCoord2f(source.x/width, source.y/height); - else rlTexCoord2f((source.x + source.width)/width, source.y/height); - rlVertex2f(topRight.x, topRight.y); - - rlEnd(); - rlSetTexture(0); - - // NOTE: Vertex position can be transformed using matrices - // but the process is way more costly than just calculating - // the vertex positions manually, like done above. - // I leave here the old implementation for educational pourposes, - // just in case someone wants to do some performance test - /* - rlSetTexture(texture.id); - rlPushMatrix(); - rlTranslatef(dest.x, dest.y, 0.0f); - if (rotation != 0.0f) rlRotatef(rotation, 0.0f, 0.0f, 1.0f); - rlTranslatef(-origin.x, -origin.y, 0.0f); - - rlBegin(RL_QUADS); - rlColor4ub(tint.r, tint.g, tint.b, tint.a); - rlNormal3f(0.0f, 0.0f, 1.0f); // Normal vector pointing towards viewer - - // Bottom-left corner for texture and quad - if (flipX) rlTexCoord2f((source.x + source.width)/width, source.y/height); - else rlTexCoord2f(source.x/width, source.y/height); - rlVertex2f(0.0f, 0.0f); - - // Bottom-right corner for texture and quad - if (flipX) rlTexCoord2f((source.x + source.width)/width, (source.y + source.height)/height); - else rlTexCoord2f(source.x/width, (source.y + source.height)/height); - rlVertex2f(0.0f, dest.height); - - // Top-right corner for texture and quad - if (flipX) rlTexCoord2f(source.x/width, (source.y + source.height)/height); - else rlTexCoord2f((source.x + source.width)/width, (source.y + source.height)/height); - rlVertex2f(dest.width, dest.height); - - // Top-left corner for texture and quad - if (flipX) rlTexCoord2f(source.x/width, source.y/height); - else rlTexCoord2f((source.x + source.width)/width, source.y/height); - rlVertex2f(dest.width, 0.0f); - rlEnd(); - rlPopMatrix(); - rlSetTexture(0); - */ - } -} - -// Draws a texture (or part of it) that stretches or shrinks nicely using n-patch info -void DrawTextureNPatch(Texture2D texture, NPatchInfo nPatchInfo, Rectangle dest, Vector2 origin, float rotation, Color tint) -{ - if (texture.id > 0) - { - float width = (float)texture.width; - float height = (float)texture.height; - - float patchWidth = (dest.width <= 0.0f)? 0.0f : dest.width; - float patchHeight = (dest.height <= 0.0f)? 0.0f : dest.height; - - if (nPatchInfo.source.width < 0) nPatchInfo.source.x -= nPatchInfo.source.width; - if (nPatchInfo.source.height < 0) nPatchInfo.source.y -= nPatchInfo.source.height; - if (nPatchInfo.layout == NPATCH_THREE_PATCH_HORIZONTAL) patchHeight = nPatchInfo.source.height; - if (nPatchInfo.layout == NPATCH_THREE_PATCH_VERTICAL) patchWidth = nPatchInfo.source.width; - - bool drawCenter = true; - bool drawMiddle = true; - float leftBorder = (float)nPatchInfo.left; - float topBorder = (float)nPatchInfo.top; - float rightBorder = (float)nPatchInfo.right; - float bottomBorder = (float)nPatchInfo.bottom; - - // adjust the lateral (left and right) border widths in case patchWidth < texture.width - if (patchWidth <= (leftBorder + rightBorder) && nPatchInfo.layout != NPATCH_THREE_PATCH_VERTICAL) - { - drawCenter = false; - leftBorder = (leftBorder/(leftBorder + rightBorder))*patchWidth; - rightBorder = patchWidth - leftBorder; - } - // adjust the lateral (top and bottom) border heights in case patchHeight < texture.height - if (patchHeight <= (topBorder + bottomBorder) && nPatchInfo.layout != NPATCH_THREE_PATCH_HORIZONTAL) - { - drawMiddle = false; - topBorder = (topBorder/(topBorder + bottomBorder))*patchHeight; - bottomBorder = patchHeight - topBorder; - } - - Vector2 vertA, vertB, vertC, vertD; - vertA.x = 0.0f; // outer left - vertA.y = 0.0f; // outer top - vertB.x = leftBorder; // inner left - vertB.y = topBorder; // inner top - vertC.x = patchWidth - rightBorder; // inner right - vertC.y = patchHeight - bottomBorder; // inner bottom - vertD.x = patchWidth; // outer right - vertD.y = patchHeight; // outer bottom - - Vector2 coordA, coordB, coordC, coordD; - coordA.x = nPatchInfo.source.x/width; - coordA.y = nPatchInfo.source.y/height; - coordB.x = (nPatchInfo.source.x + leftBorder)/width; - coordB.y = (nPatchInfo.source.y + topBorder)/height; - coordC.x = (nPatchInfo.source.x + nPatchInfo.source.width - rightBorder)/width; - coordC.y = (nPatchInfo.source.y + nPatchInfo.source.height - bottomBorder)/height; - coordD.x = (nPatchInfo.source.x + nPatchInfo.source.width)/width; - coordD.y = (nPatchInfo.source.y + nPatchInfo.source.height)/height; - - rlSetTexture(texture.id); - - rlPushMatrix(); - rlTranslatef(dest.x, dest.y, 0.0f); - rlRotatef(rotation, 0.0f, 0.0f, 1.0f); - rlTranslatef(-origin.x, -origin.y, 0.0f); - - rlBegin(RL_QUADS); - rlColor4ub(tint.r, tint.g, tint.b, tint.a); - rlNormal3f(0.0f, 0.0f, 1.0f); // Normal vector pointing towards viewer - - if (nPatchInfo.layout == NPATCH_NINE_PATCH) - { - // ------------------------------------------------------------ - // TOP-LEFT QUAD - rlTexCoord2f(coordA.x, coordB.y); rlVertex2f(vertA.x, vertB.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordB.x, coordB.y); rlVertex2f(vertB.x, vertB.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordB.x, coordA.y); rlVertex2f(vertB.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordA.y); rlVertex2f(vertA.x, vertA.y); // Top-left corner for texture and quad - if (drawCenter) - { - // TOP-CENTER QUAD - rlTexCoord2f(coordB.x, coordB.y); rlVertex2f(vertB.x, vertB.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordC.x, coordB.y); rlVertex2f(vertC.x, vertB.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordC.x, coordA.y); rlVertex2f(vertC.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordB.x, coordA.y); rlVertex2f(vertB.x, vertA.y); // Top-left corner for texture and quad - } - // TOP-RIGHT QUAD - rlTexCoord2f(coordC.x, coordB.y); rlVertex2f(vertC.x, vertB.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordB.y); rlVertex2f(vertD.x, vertB.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordA.y); rlVertex2f(vertD.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordC.x, coordA.y); rlVertex2f(vertC.x, vertA.y); // Top-left corner for texture and quad - if (drawMiddle) - { - // ------------------------------------------------------------ - // MIDDLE-LEFT QUAD - rlTexCoord2f(coordA.x, coordC.y); rlVertex2f(vertA.x, vertC.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordB.x, coordC.y); rlVertex2f(vertB.x, vertC.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordB.x, coordB.y); rlVertex2f(vertB.x, vertB.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordB.y); rlVertex2f(vertA.x, vertB.y); // Top-left corner for texture and quad - if (drawCenter) - { - // MIDDLE-CENTER QUAD - rlTexCoord2f(coordB.x, coordC.y); rlVertex2f(vertB.x, vertC.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordC.x, coordC.y); rlVertex2f(vertC.x, vertC.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordC.x, coordB.y); rlVertex2f(vertC.x, vertB.y); // Top-right corner for texture and quad - rlTexCoord2f(coordB.x, coordB.y); rlVertex2f(vertB.x, vertB.y); // Top-left corner for texture and quad - } - - // MIDDLE-RIGHT QUAD - rlTexCoord2f(coordC.x, coordC.y); rlVertex2f(vertC.x, vertC.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordC.y); rlVertex2f(vertD.x, vertC.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordB.y); rlVertex2f(vertD.x, vertB.y); // Top-right corner for texture and quad - rlTexCoord2f(coordC.x, coordB.y); rlVertex2f(vertC.x, vertB.y); // Top-left corner for texture and quad - } - - // ------------------------------------------------------------ - // BOTTOM-LEFT QUAD - rlTexCoord2f(coordA.x, coordD.y); rlVertex2f(vertA.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordB.x, coordD.y); rlVertex2f(vertB.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordB.x, coordC.y); rlVertex2f(vertB.x, vertC.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordC.y); rlVertex2f(vertA.x, vertC.y); // Top-left corner for texture and quad - if (drawCenter) - { - // BOTTOM-CENTER QUAD - rlTexCoord2f(coordB.x, coordD.y); rlVertex2f(vertB.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordC.x, coordD.y); rlVertex2f(vertC.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordC.x, coordC.y); rlVertex2f(vertC.x, vertC.y); // Top-right corner for texture and quad - rlTexCoord2f(coordB.x, coordC.y); rlVertex2f(vertB.x, vertC.y); // Top-left corner for texture and quad - } - - // BOTTOM-RIGHT QUAD - rlTexCoord2f(coordC.x, coordD.y); rlVertex2f(vertC.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordD.y); rlVertex2f(vertD.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordC.y); rlVertex2f(vertD.x, vertC.y); // Top-right corner for texture and quad - rlTexCoord2f(coordC.x, coordC.y); rlVertex2f(vertC.x, vertC.y); // Top-left corner for texture and quad - } - else if (nPatchInfo.layout == NPATCH_THREE_PATCH_VERTICAL) - { - // TOP QUAD - // ----------------------------------------------------------- - // Texture coords Vertices - rlTexCoord2f(coordA.x, coordB.y); rlVertex2f(vertA.x, vertB.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordB.y); rlVertex2f(vertD.x, vertB.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordA.y); rlVertex2f(vertD.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordA.y); rlVertex2f(vertA.x, vertA.y); // Top-left corner for texture and quad - if (drawCenter) - { - // MIDDLE QUAD - // ----------------------------------------------------------- - // Texture coords Vertices - rlTexCoord2f(coordA.x, coordC.y); rlVertex2f(vertA.x, vertC.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordC.y); rlVertex2f(vertD.x, vertC.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordB.y); rlVertex2f(vertD.x, vertB.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordB.y); rlVertex2f(vertA.x, vertB.y); // Top-left corner for texture and quad - } - // BOTTOM QUAD - // ----------------------------------------------------------- - // Texture coords Vertices - rlTexCoord2f(coordA.x, coordD.y); rlVertex2f(vertA.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordD.y); rlVertex2f(vertD.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordC.y); rlVertex2f(vertD.x, vertC.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordC.y); rlVertex2f(vertA.x, vertC.y); // Top-left corner for texture and quad - } - else if (nPatchInfo.layout == NPATCH_THREE_PATCH_HORIZONTAL) - { - // LEFT QUAD - // ----------------------------------------------------------- - // Texture coords Vertices - rlTexCoord2f(coordA.x, coordD.y); rlVertex2f(vertA.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordB.x, coordD.y); rlVertex2f(vertB.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordB.x, coordA.y); rlVertex2f(vertB.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordA.x, coordA.y); rlVertex2f(vertA.x, vertA.y); // Top-left corner for texture and quad - if (drawCenter) - { - // CENTER QUAD - // ----------------------------------------------------------- - // Texture coords Vertices - rlTexCoord2f(coordB.x, coordD.y); rlVertex2f(vertB.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordC.x, coordD.y); rlVertex2f(vertC.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordC.x, coordA.y); rlVertex2f(vertC.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordB.x, coordA.y); rlVertex2f(vertB.x, vertA.y); // Top-left corner for texture and quad - } - // RIGHT QUAD - // ----------------------------------------------------------- - // Texture coords Vertices - rlTexCoord2f(coordC.x, coordD.y); rlVertex2f(vertC.x, vertD.y); // Bottom-left corner for texture and quad - rlTexCoord2f(coordD.x, coordD.y); rlVertex2f(vertD.x, vertD.y); // Bottom-right corner for texture and quad - rlTexCoord2f(coordD.x, coordA.y); rlVertex2f(vertD.x, vertA.y); // Top-right corner for texture and quad - rlTexCoord2f(coordC.x, coordA.y); rlVertex2f(vertC.x, vertA.y); // Top-left corner for texture and quad - } - rlEnd(); - rlPopMatrix(); - - rlSetTexture(0); - } -} - -// Draw textured polygon, defined by vertex and texturecoordinates -// NOTE: Polygon center must have straight line path to all points -// without crossing perimeter, points must be in anticlockwise order -void DrawTexturePoly(Texture2D texture, Vector2 center, Vector2 *points, Vector2 *texcoords, int pointsCount, Color tint) -{ - rlCheckRenderBatchLimit((pointsCount - 1)*4); - - rlSetTexture(texture.id); - - // Texturing is only supported on QUADs - rlBegin(RL_QUADS); - - rlColor4ub(tint.r, tint.g, tint.b, tint.a); - - for (int i = 0; i < pointsCount - 1; i++) - { - rlTexCoord2f(0.5f, 0.5f); - rlVertex2f(center.x, center.y); - - rlTexCoord2f(texcoords[i].x, texcoords[i].y); - rlVertex2f(points[i].x + center.x, points[i].y + center.y); - - rlTexCoord2f(texcoords[i + 1].x, texcoords[i + 1].y); - rlVertex2f(points[i + 1].x + center.x, points[i + 1].y + center.y); - - rlTexCoord2f(texcoords[i + 1].x, texcoords[i + 1].y); - rlVertex2f(points[i + 1].x + center.x, points[i + 1].y + center.y); - } - rlEnd(); - - rlSetTexture(0); -} - -// Returns color with alpha applied, alpha goes from 0.0f to 1.0f -Color Fade(Color color, float alpha) -{ - if (alpha < 0.0f) alpha = 0.0f; - else if (alpha > 1.0f) alpha = 1.0f; - - return (Color){color.r, color.g, color.b, (unsigned char)(255.0f*alpha)}; -} - -// Returns hexadecimal value for a Color -int ColorToInt(Color color) -{ - return (((int)color.r << 24) | ((int)color.g << 16) | ((int)color.b << 8) | (int)color.a); -} - -// Returns color normalized as float [0..1] -Vector4 ColorNormalize(Color color) -{ - Vector4 result; - - result.x = (float)color.r/255.0f; - result.y = (float)color.g/255.0f; - result.z = (float)color.b/255.0f; - result.w = (float)color.a/255.0f; - - return result; -} - -// Returns color from normalized values [0..1] -Color ColorFromNormalized(Vector4 normalized) -{ - Color result; - - result.r = (unsigned char)(normalized.x*255.0f); - result.g = (unsigned char)(normalized.y*255.0f); - result.b = (unsigned char)(normalized.z*255.0f); - result.a = (unsigned char)(normalized.w*255.0f); - - return result; -} - -// Returns HSV values for a Color -// NOTE: Hue is returned as degrees [0..360] -Vector3 ColorToHSV(Color color) -{ - Vector3 hsv = { 0 }; - Vector3 rgb = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - float min, max, delta; - - min = rgb.x < rgb.y? rgb.x : rgb.y; - min = min < rgb.z? min : rgb.z; - - max = rgb.x > rgb.y? rgb.x : rgb.y; - max = max > rgb.z? max : rgb.z; - - hsv.z = max; // Value - delta = max - min; - - if (delta < 0.00001f) - { - hsv.y = 0.0f; - hsv.x = 0.0f; // Undefined, maybe NAN? - return hsv; - } - - if (max > 0.0f) - { - // NOTE: If max is 0, this divide would cause a crash - hsv.y = (delta/max); // Saturation - } - else - { - // NOTE: If max is 0, then r = g = b = 0, s = 0, h is undefined - hsv.y = 0.0f; - hsv.x = NAN; // Undefined - return hsv; - } - - // NOTE: Comparing float values could not work properly - if (rgb.x >= max) hsv.x = (rgb.y - rgb.z)/delta; // Between yellow & magenta - else - { - if (rgb.y >= max) hsv.x = 2.0f + (rgb.z - rgb.x)/delta; // Between cyan & yellow - else hsv.x = 4.0f + (rgb.x - rgb.y)/delta; // Between magenta & cyan - } - - hsv.x *= 60.0f; // Convert to degrees - - if (hsv.x < 0.0f) hsv.x += 360.0f; - - return hsv; -} - -// Returns a Color from HSV values -// Implementation reference: https://en.wikipedia.org/wiki/HSL_and_HSV#Alternative_HSV_conversion -// NOTE: Color->HSV->Color conversion will not yield exactly the same color due to rounding errors -// Hue is provided in degrees: [0..360] -// Saturation/Value are provided normalized: [0.0f..1.0f] -Color ColorFromHSV(float hue, float saturation, float value) -{ - Color color = { 0, 0, 0, 255 }; - - // Red channel - float k = fmodf((5.0f + hue/60.0f), 6); - float t = 4.0f - k; - k = (t < k)? t : k; - k = (k < 1)? k : 1; - k = (k > 0)? k : 0; - color.r = (unsigned char)((value - value*saturation*k)*255.0f); - - // Green channel - k = fmodf((3.0f + hue/60.0f), 6); - t = 4.0f - k; - k = (t < k)? t : k; - k = (k < 1)? k : 1; - k = (k > 0)? k : 0; - color.g = (unsigned char)((value - value*saturation*k)*255.0f); - - // Blue channel - k = fmodf((1.0f + hue/60.0f), 6); - t = 4.0f - k; - k = (t < k)? t : k; - k = (k < 1)? k : 1; - k = (k > 0)? k : 0; - color.b = (unsigned char)((value - value*saturation*k)*255.0f); - - return color; -} - -// Returns color with alpha applied, alpha goes from 0.0f to 1.0f -Color ColorAlpha(Color color, float alpha) -{ - if (alpha < 0.0f) alpha = 0.0f; - else if (alpha > 1.0f) alpha = 1.0f; - - return (Color){color.r, color.g, color.b, (unsigned char)(255.0f*alpha)}; -} - -// Returns src alpha-blended into dst color with tint -Color ColorAlphaBlend(Color dst, Color src, Color tint) -{ - Color out = WHITE; - - // Apply color tint to source color - src.r = (unsigned char)(((unsigned int)src.r*(unsigned int)tint.r) >> 8); - src.g = (unsigned char)(((unsigned int)src.g*(unsigned int)tint.g) >> 8); - src.b = (unsigned char)(((unsigned int)src.b*(unsigned int)tint.b) >> 8); - src.a = (unsigned char)(((unsigned int)src.a*(unsigned int)tint.a) >> 8); - -//#define COLORALPHABLEND_FLOAT -#define COLORALPHABLEND_INTEGERS -#if defined(COLORALPHABLEND_INTEGERS) - if (src.a == 0) out = dst; - else if (src.a == 255) out = src; - else - { - unsigned int alpha = (unsigned int)src.a + 1; // We are shifting by 8 (dividing by 256), so we need to take that excess into account - out.a = (unsigned char)(((unsigned int)alpha*256 + (unsigned int)dst.a*(256 - alpha)) >> 8); - - if (out.a > 0) - { - out.r = (unsigned char)((((unsigned int)src.r*alpha*256 + (unsigned int)dst.r*(unsigned int)dst.a*(256 - alpha))/out.a) >> 8); - out.g = (unsigned char)((((unsigned int)src.g*alpha*256 + (unsigned int)dst.g*(unsigned int)dst.a*(256 - alpha))/out.a) >> 8); - out.b = (unsigned char)((((unsigned int)src.b*alpha*256 + (unsigned int)dst.b*(unsigned int)dst.a*(256 - alpha))/out.a) >> 8); - } - } -#endif -#if defined(COLORALPHABLEND_FLOAT) - if (src.a == 0) out = dst; - else if (src.a == 255) out = src; - else - { - Vector4 fdst = ColorNormalize(dst); - Vector4 fsrc = ColorNormalize(src); - Vector4 ftint = ColorNormalize(tint); - Vector4 fout = { 0 }; - - fout.w = fsrc.w + fdst.w*(1.0f - fsrc.w); - - if (fout.w > 0.0f) - { - fout.x = (fsrc.x*fsrc.w + fdst.x*fdst.w*(1 - fsrc.w))/fout.w; - fout.y = (fsrc.y*fsrc.w + fdst.y*fdst.w*(1 - fsrc.w))/fout.w; - fout.z = (fsrc.z*fsrc.w + fdst.z*fdst.w*(1 - fsrc.w))/fout.w; - } - - out = (Color){ (unsigned char)(fout.x*255.0f), (unsigned char)(fout.y*255.0f), (unsigned char)(fout.z*255.0f), (unsigned char)(fout.w*255.0f) }; - } -#endif - - return out; -} - -// Returns a Color struct from hexadecimal value -Color GetColor(int hexValue) -{ - Color color; - - color.r = (unsigned char)(hexValue >> 24) & 0xFF; - color.g = (unsigned char)(hexValue >> 16) & 0xFF; - color.b = (unsigned char)(hexValue >> 8) & 0xFF; - color.a = (unsigned char)hexValue & 0xFF; - - return color; -} - -// Get color from a pixel from certain format -Color GetPixelColor(void *srcPtr, int format) -{ - Color col = { 0 }; - - switch (format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], 255 }; break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[1] }; break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - { - col.r = (unsigned char)((((unsigned short *)srcPtr)[0] >> 11)*255/31); - col.g = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 5) & 0b0000000000111111)*255/63); - col.b = (unsigned char)((((unsigned short *)srcPtr)[0] & 0b0000000000011111)*255/31); - col.a = 255; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - col.r = (unsigned char)((((unsigned short *)srcPtr)[0] >> 11)*255/31); - col.g = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 6) & 0b0000000000011111)*255/31); - col.b = (unsigned char)((((unsigned short *)srcPtr)[0] & 0b0000000000011111)*255/31); - col.a = (((unsigned short *)srcPtr)[0] & 0b0000000000000001)? 255 : 0; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - col.r = (unsigned char)((((unsigned short *)srcPtr)[0] >> 12)*255/15); - col.g = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 8) & 0b0000000000001111)*255/15); - col.b = (unsigned char)(((((unsigned short *)srcPtr)[0] >> 4) & 0b0000000000001111)*255/15); - col.a = (unsigned char)((((unsigned short *)srcPtr)[0] & 0b0000000000001111)*255/15); - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[1], ((unsigned char *)srcPtr)[2], ((unsigned char *)srcPtr)[3] }; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: col = (Color){ ((unsigned char *)srcPtr)[0], ((unsigned char *)srcPtr)[1], ((unsigned char *)srcPtr)[2], 255 }; break; - // TODO: case PIXELFORMAT_UNCOMPRESSED_R32: break; - // TODO: case PIXELFORMAT_UNCOMPRESSED_R32G32B32: break; - // TODO: case PIXELFORMAT_UNCOMPRESSED_R32G32B32A32: break; - default: break; - } - - return col; -} - -// Set pixel color formatted into destination pointer -void SetPixelColor(void *dstPtr, Color color, int format) -{ - switch (format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: - { - // NOTE: Calculate grayscale equivalent color - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f); - - ((unsigned char *)dstPtr)[0] = gray; - - } break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - { - // NOTE: Calculate grayscale equivalent color - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - unsigned char gray = (unsigned char)((coln.x*0.299f + coln.y*0.587f + coln.z*0.114f)*255.0f); - - ((unsigned char *)dstPtr)[0] = gray; - ((unsigned char *)dstPtr)[1] = color.a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - { - // NOTE: Calculate R5G6B5 equivalent color - Vector3 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f }; - - unsigned char r = (unsigned char)(round(coln.x*31.0f)); - unsigned char g = (unsigned char)(round(coln.y*63.0f)); - unsigned char b = (unsigned char)(round(coln.z*31.0f)); - - ((unsigned short *)dstPtr)[0] = (unsigned short)r << 11 | (unsigned short)g << 5 | (unsigned short)b; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - { - // NOTE: Calculate R5G5B5A1 equivalent color - Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f }; - - unsigned char r = (unsigned char)(round(coln.x*31.0f)); - unsigned char g = (unsigned char)(round(coln.y*31.0f)); - unsigned char b = (unsigned char)(round(coln.z*31.0f)); - unsigned char a = (coln.w > ((float)PIXELFORMAT_UNCOMPRESSED_R5G5B5A1_ALPHA_THRESHOLD/255.0f))? 1 : 0;; - - ((unsigned short *)dstPtr)[0] = (unsigned short)r << 11 | (unsigned short)g << 6 | (unsigned short)b << 1 | (unsigned short)a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: - { - // NOTE: Calculate R5G5B5A1 equivalent color - Vector4 coln = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f, (float)color.a/255.0f }; - - unsigned char r = (unsigned char)(round(coln.x*15.0f)); - unsigned char g = (unsigned char)(round(coln.y*15.0f)); - unsigned char b = (unsigned char)(round(coln.z*15.0f)); - unsigned char a = (unsigned char)(round(coln.w*15.0f)); - - ((unsigned short *)dstPtr)[0] = (unsigned short)r << 12 | (unsigned short)g << 8 | (unsigned short)b << 4 | (unsigned short)a; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: - { - ((unsigned char *)dstPtr)[0] = color.r; - ((unsigned char *)dstPtr)[1] = color.g; - ((unsigned char *)dstPtr)[2] = color.b; - - } break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: - { - ((unsigned char *)dstPtr)[0] = color.r; - ((unsigned char *)dstPtr)[1] = color.g; - ((unsigned char *)dstPtr)[2] = color.b; - ((unsigned char *)dstPtr)[3] = color.a; - - } break; - default: break; - } -} - -// Get pixel data size in bytes for certain format -// NOTE: Size can be requested for Image or Texture data -int GetPixelDataSize(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; -} - -//---------------------------------------------------------------------------------- -// Module specific Functions Definition -//---------------------------------------------------------------------------------- -#if defined(SUPPORT_FILEFORMAT_DDS) -// Loading DDS image data (compressed or uncompressed) -static Image LoadDDS(const unsigned char *fileData, unsigned int fileSize) -{ - unsigned char *fileDataPtr = (unsigned char *)fileData; - - // Required extension: - // GL_EXT_texture_compression_s3tc - - // Supported tokens (defined by extensions) - // GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0 - // GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1 - // GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2 - // GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3 - - #define FOURCC_DXT1 0x31545844 // Equivalent to "DXT1" in ASCII - #define FOURCC_DXT3 0x33545844 // Equivalent to "DXT3" in ASCII - #define FOURCC_DXT5 0x35545844 // Equivalent to "DXT5" in ASCII - - // DDS Pixel Format - typedef struct { - unsigned int size; - unsigned int flags; - unsigned int fourCC; - unsigned int rgbBitCount; - unsigned int rBitMask; - unsigned int gBitMask; - unsigned int bBitMask; - unsigned int aBitMask; - } DDSPixelFormat; - - // DDS Header (124 bytes) - typedef struct { - unsigned int size; - unsigned int flags; - unsigned int height; - unsigned int width; - unsigned int pitchOrLinearSize; - unsigned int depth; - unsigned int mipmapCount; - unsigned int reserved1[11]; - DDSPixelFormat ddspf; - unsigned int caps; - unsigned int caps2; - unsigned int caps3; - unsigned int caps4; - unsigned int reserved2; - } DDSHeader; - - Image image = { 0 }; - - if (fileDataPtr != NULL) - { - // Verify the type of file - unsigned char *ddsHeaderId = fileDataPtr; - fileDataPtr += 4; - - if ((ddsHeaderId[0] != 'D') || (ddsHeaderId[1] != 'D') || (ddsHeaderId[2] != 'S') || (ddsHeaderId[3] != ' ')) - { - TRACELOG(LOG_WARNING, "IMAGE: DDS file data not valid"); - } - else - { - DDSHeader *ddsHeader = (DDSHeader *)fileDataPtr; - - TRACELOGD("IMAGE: DDS file data info:"); - TRACELOGD(" > Header size: %i", sizeof(DDSHeader)); - TRACELOGD(" > Pixel format size: %i", ddsHeader->ddspf.size); - TRACELOGD(" > Pixel format flags: 0x%x", ddsHeader->ddspf.flags); - TRACELOGD(" > File format: 0x%x", ddsHeader->ddspf.fourCC); - TRACELOGD(" > File bit count: 0x%x", ddsHeader->ddspf.rgbBitCount); - - fileDataPtr += sizeof(DDSHeader); // Skip header - - image.width = ddsHeader->width; - image.height = ddsHeader->height; - - if (ddsHeader->mipmapCount == 0) image.mipmaps = 1; // Parameter not used - else image.mipmaps = ddsHeader->mipmapCount; - - if (ddsHeader->ddspf.rgbBitCount == 16) // 16bit mode, no compressed - { - if (ddsHeader->ddspf.flags == 0x40) // no alpha channel - { - int dataSize = image.width*image.height*sizeof(unsigned short); - image.data = (unsigned short *)RL_MALLOC(dataSize); - - memcpy(image.data, fileDataPtr, dataSize); - - image.format = PIXELFORMAT_UNCOMPRESSED_R5G6B5; - } - else if (ddsHeader->ddspf.flags == 0x41) // with alpha channel - { - if (ddsHeader->ddspf.aBitMask == 0x8000) // 1bit alpha - { - int dataSize = image.width*image.height*sizeof(unsigned short); - image.data = (unsigned short *)RL_MALLOC(dataSize); - - memcpy(image.data, fileDataPtr, dataSize); - - unsigned char alpha = 0; - - // NOTE: Data comes as A1R5G5B5, it must be reordered to R5G5B5A1 - for (int i = 0; i < image.width*image.height; i++) - { - alpha = ((unsigned short *)image.data)[i] >> 15; - ((unsigned short *)image.data)[i] = ((unsigned short *)image.data)[i] << 1; - ((unsigned short *)image.data)[i] += alpha; - } - - image.format = PIXELFORMAT_UNCOMPRESSED_R5G5B5A1; - } - else if (ddsHeader->ddspf.aBitMask == 0xf000) // 4bit alpha - { - int dataSize = image.width*image.height*sizeof(unsigned short); - image.data = (unsigned short *)RL_MALLOC(dataSize); - - memcpy(image.data, fileDataPtr, dataSize); - - unsigned char alpha = 0; - - // NOTE: Data comes as A4R4G4B4, it must be reordered R4G4B4A4 - for (int i = 0; i < image.width*image.height; i++) - { - alpha = ((unsigned short *)image.data)[i] >> 12; - ((unsigned short *)image.data)[i] = ((unsigned short *)image.data)[i] << 4; - ((unsigned short *)image.data)[i] += alpha; - } - - image.format = PIXELFORMAT_UNCOMPRESSED_R4G4B4A4; - } - } - } - else if (ddsHeader->ddspf.flags == 0x40 && ddsHeader->ddspf.rgbBitCount == 24) // DDS_RGB, no compressed - { - int dataSize = image.width*image.height*3*sizeof(unsigned char); - image.data = (unsigned short *)RL_MALLOC(dataSize); - - memcpy(image.data, fileDataPtr, dataSize); - - image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8; - } - else if (ddsHeader->ddspf.flags == 0x41 && ddsHeader->ddspf.rgbBitCount == 32) // DDS_RGBA, no compressed - { - int dataSize = image.width*image.height*4*sizeof(unsigned char); - image.data = (unsigned short *)RL_MALLOC(dataSize); - - memcpy(image.data, fileDataPtr, dataSize); - - unsigned char blue = 0; - - // NOTE: Data comes as A8R8G8B8, it must be reordered R8G8B8A8 (view next comment) - // DirecX understand ARGB as a 32bit DWORD but the actual memory byte alignment is BGRA - // So, we must realign B8G8R8A8 to R8G8B8A8 - for (int i = 0; i < image.width*image.height*4; i += 4) - { - blue = ((unsigned char *)image.data)[i]; - ((unsigned char *)image.data)[i] = ((unsigned char *)image.data)[i + 2]; - ((unsigned char *)image.data)[i + 2] = blue; - } - - image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - } - else if (((ddsHeader->ddspf.flags == 0x04) || (ddsHeader->ddspf.flags == 0x05)) && (ddsHeader->ddspf.fourCC > 0)) // Compressed - { - int dataSize = 0; - - // Calculate data size, including all mipmaps - if (ddsHeader->mipmapCount > 1) dataSize = ddsHeader->pitchOrLinearSize*2; - else dataSize = ddsHeader->pitchOrLinearSize; - - image.data = (unsigned char *)RL_MALLOC(dataSize*sizeof(unsigned char)); - - memcpy(image.data, fileDataPtr, dataSize); - - switch (ddsHeader->ddspf.fourCC) - { - case FOURCC_DXT1: - { - if (ddsHeader->ddspf.flags == 0x04) image.format = PIXELFORMAT_COMPRESSED_DXT1_RGB; - else image.format = PIXELFORMAT_COMPRESSED_DXT1_RGBA; - } break; - case FOURCC_DXT3: image.format = PIXELFORMAT_COMPRESSED_DXT3_RGBA; break; - case FOURCC_DXT5: image.format = PIXELFORMAT_COMPRESSED_DXT5_RGBA; break; - default: break; - } - } - } - } - - return image; -} -#endif - -#if defined(SUPPORT_FILEFORMAT_PKM) -// Loading PKM image data (ETC1/ETC2 compression) -// NOTE: KTX is the standard Khronos Group compression format (ETC1/ETC2, mipmaps) -// PKM is a much simpler file format used mainly to contain a single ETC1/ETC2 compressed image (no mipmaps) -static Image LoadPKM(const unsigned char *fileData, unsigned int fileSize) -{ - unsigned char *fileDataPtr = (unsigned char *)fileData; - - // Required extensions: - // GL_OES_compressed_ETC1_RGB8_texture (ETC1) (OpenGL ES 2.0) - // GL_ARB_ES3_compatibility (ETC2/EAC) (OpenGL ES 3.0) - - // Supported tokens (defined by extensions) - // GL_ETC1_RGB8_OES 0x8D64 - // GL_COMPRESSED_RGB8_ETC2 0x9274 - // GL_COMPRESSED_RGBA8_ETC2_EAC 0x9278 - - // PKM file (ETC1) Header (16 bytes) - typedef struct { - char id[4]; // "PKM " - char version[2]; // "10" or "20" - unsigned short format; // Data format (big-endian) (Check list below) - unsigned short width; // Texture width (big-endian) (origWidth rounded to multiple of 4) - unsigned short height; // Texture height (big-endian) (origHeight rounded to multiple of 4) - unsigned short origWidth; // Original width (big-endian) - unsigned short origHeight; // Original height (big-endian) - } PKMHeader; - - // Formats list - // version 10: format: 0=ETC1_RGB, [1=ETC1_RGBA, 2=ETC1_RGB_MIP, 3=ETC1_RGBA_MIP] (not used) - // version 20: format: 0=ETC1_RGB, 1=ETC2_RGB, 2=ETC2_RGBA_OLD, 3=ETC2_RGBA, 4=ETC2_RGBA1, 5=ETC2_R, 6=ETC2_RG, 7=ETC2_SIGNED_R, 8=ETC2_SIGNED_R - - // NOTE: The extended width and height are the widths rounded up to a multiple of 4. - // NOTE: ETC is always 4bit per pixel (64 bit for each 4x4 block of pixels) - - Image image = { 0 }; - - if (fileDataPtr != NULL) - { - PKMHeader *pkmHeader = (PKMHeader *)fileDataPtr; - - if ((pkmHeader->id[0] != 'P') || (pkmHeader->id[1] != 'K') || (pkmHeader->id[2] != 'M') || (pkmHeader->id[3] != ' ')) - { - TRACELOG(LOG_WARNING, "IMAGE: PKM file data not valid"); - } - else - { - fileDataPtr += sizeof(PKMHeader); // Skip header - - // NOTE: format, width and height come as big-endian, data must be swapped to little-endian - pkmHeader->format = ((pkmHeader->format & 0x00FF) << 8) | ((pkmHeader->format & 0xFF00) >> 8); - pkmHeader->width = ((pkmHeader->width & 0x00FF) << 8) | ((pkmHeader->width & 0xFF00) >> 8); - pkmHeader->height = ((pkmHeader->height & 0x00FF) << 8) | ((pkmHeader->height & 0xFF00) >> 8); - - TRACELOGD("IMAGE: PKM file data info:"); - TRACELOGD(" > Image width: %i", pkmHeader->width); - TRACELOGD(" > Image height: %i", pkmHeader->height); - TRACELOGD(" > Image format: %i", pkmHeader->format); - - image.width = pkmHeader->width; - image.height = pkmHeader->height; - image.mipmaps = 1; - - int bpp = 4; - if (pkmHeader->format == 3) bpp = 8; - - int dataSize = image.width*image.height*bpp/8; // Total data size in bytes - - image.data = (unsigned char *)RL_MALLOC(dataSize*sizeof(unsigned char)); - - memcpy(image.data, fileDataPtr, dataSize); - - if (pkmHeader->format == 0) image.format = PIXELFORMAT_COMPRESSED_ETC1_RGB; - else if (pkmHeader->format == 1) image.format = PIXELFORMAT_COMPRESSED_ETC2_RGB; - else if (pkmHeader->format == 3) image.format = PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA; - } - } - - return image; -} -#endif - -#if defined(SUPPORT_FILEFORMAT_KTX) -// Load KTX compressed image data (ETC1/ETC2 compression) -static Image LoadKTX(const unsigned char *fileData, unsigned int fileSize) -{ - unsigned char *fileDataPtr = (unsigned char *)fileData; - - // Required extensions: - // GL_OES_compressed_ETC1_RGB8_texture (ETC1) - // GL_ARB_ES3_compatibility (ETC2/EAC) - - // Supported tokens (defined by extensions) - // GL_ETC1_RGB8_OES 0x8D64 - // GL_COMPRESSED_RGB8_ETC2 0x9274 - // GL_COMPRESSED_RGBA8_ETC2_EAC 0x9278 - - // KTX file Header (64 bytes) - // v1.1 - https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/ - // v2.0 - http://github.khronos.org/KTX-Specification/ - - // TODO: Support KTX 2.2 specs! - - typedef struct { - char id[12]; // Identifier: "«KTX 11»\r\n\x1A\n" - unsigned int endianness; // Little endian: 0x01 0x02 0x03 0x04 - unsigned int glType; // For compressed textures, glType must equal 0 - unsigned int glTypeSize; // For compressed texture data, usually 1 - unsigned int glFormat; // For compressed textures is 0 - unsigned int glInternalFormat; // Compressed internal format - unsigned int glBaseInternalFormat; // Same as glFormat (RGB, RGBA, ALPHA...) - unsigned int width; // Texture image width in pixels - unsigned int height; // Texture image height in pixels - unsigned int depth; // For 2D textures is 0 - unsigned int elements; // Number of array elements, usually 0 - unsigned int faces; // Cubemap faces, for no-cubemap = 1 - unsigned int mipmapLevels; // Non-mipmapped textures = 1 - unsigned int keyValueDataSize; // Used to encode any arbitrary data... - } KTXHeader; - - // NOTE: Before start of every mipmap data block, we have: unsigned int dataSize - - Image image = { 0 }; - - if (fileDataPtr != NULL) - { - KTXHeader *ktxHeader = (KTXHeader *)fileDataPtr; - - if ((ktxHeader->id[1] != 'K') || (ktxHeader->id[2] != 'T') || (ktxHeader->id[3] != 'X') || - (ktxHeader->id[4] != ' ') || (ktxHeader->id[5] != '1') || (ktxHeader->id[6] != '1')) - { - TRACELOG(LOG_WARNING, "IMAGE: KTX file data not valid"); - } - else - { - fileDataPtr += sizeof(KTXHeader); // Move file data pointer - - image.width = ktxHeader->width; - image.height = ktxHeader->height; - image.mipmaps = ktxHeader->mipmapLevels; - - TRACELOGD("IMAGE: KTX file data info:"); - TRACELOGD(" > Image width: %i", ktxHeader->width); - TRACELOGD(" > Image height: %i", ktxHeader->height); - TRACELOGD(" > Image format: 0x%x", ktxHeader->glInternalFormat); - - fileDataPtr += ktxHeader->keyValueDataSize; // Skip value data size - - int dataSize = ((int *)fileDataPtr)[0]; - fileDataPtr += sizeof(int); - - image.data = (unsigned char *)RL_MALLOC(dataSize*sizeof(unsigned char)); - - memcpy(image.data, fileDataPtr, dataSize); - - if (ktxHeader->glInternalFormat == 0x8D64) image.format = PIXELFORMAT_COMPRESSED_ETC1_RGB; - else if (ktxHeader->glInternalFormat == 0x9274) image.format = PIXELFORMAT_COMPRESSED_ETC2_RGB; - else if (ktxHeader->glInternalFormat == 0x9278) image.format = PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA; - } - } - - return image; -} - -// Save image data as KTX file -// NOTE: By default KTX 1.1 spec is used, 2.0 is still on draft (01Oct2018) -static int SaveKTX(Image image, const char *fileName) -{ - // KTX file Header (64 bytes) - // v1.1 - https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/ - // v2.0 - http://github.khronos.org/KTX-Specification/ - still on draft, not ready for implementation - typedef struct { - char id[12]; // Identifier: "«KTX 11»\r\n\x1A\n" // KTX 2.0: "«KTX 22»\r\n\x1A\n" - unsigned int endianness; // Little endian: 0x01 0x02 0x03 0x04 - unsigned int glType; // For compressed textures, glType must equal 0 - unsigned int glTypeSize; // For compressed texture data, usually 1 - unsigned int glFormat; // For compressed textures is 0 - unsigned int glInternalFormat; // Compressed internal format - unsigned int glBaseInternalFormat; // Same as glFormat (RGB, RGBA, ALPHA...) // KTX 2.0: UInt32 vkFormat - unsigned int width; // Texture image width in pixels - unsigned int height; // Texture image height in pixels - unsigned int depth; // For 2D textures is 0 - unsigned int elements; // Number of array elements, usually 0 - unsigned int faces; // Cubemap faces, for no-cubemap = 1 - unsigned int mipmapLevels; // Non-mipmapped textures = 1 - unsigned int keyValueDataSize; // Used to encode any arbitrary data... // KTX 2.0: UInt32 levelOrder - ordering of the mipmap levels, usually 0 - // KTX 2.0: UInt32 supercompressionScheme - 0 (None), 1 (Crunch CRN), 2 (Zlib DEFLATE)... - // KTX 2.0 defines additional header elements... - } KTXHeader; - - // Calculate file dataSize required - int dataSize = sizeof(KTXHeader); - - for (int i = 0, width = image.width, height = image.height; i < image.mipmaps; i++) - { - dataSize += GetPixelDataSize(width, height, image.format); - width /= 2; height /= 2; - } - - unsigned char *fileData = RL_CALLOC(dataSize, 1); - unsigned char *fileDataPtr = fileData; - - KTXHeader ktxHeader = { 0 }; - - // KTX identifier (v1.1) - //unsigned char id[12] = { '«', 'K', 'T', 'X', ' ', '1', '1', '»', '\r', '\n', '\x1A', '\n' }; - //unsigned char id[12] = { 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A }; - - const char ktxIdentifier[12] = { 0xAB, 'K', 'T', 'X', ' ', '1', '1', 0xBB, '\r', '\n', 0x1A, '\n' }; - - // Get the image header - memcpy(ktxHeader.id, ktxIdentifier, 12); // KTX 1.1 signature - ktxHeader.endianness = 0; - ktxHeader.glType = 0; // Obtained from image.format - ktxHeader.glTypeSize = 1; - ktxHeader.glFormat = 0; // Obtained from image.format - ktxHeader.glInternalFormat = 0; // Obtained from image.format - ktxHeader.glBaseInternalFormat = 0; - ktxHeader.width = image.width; - ktxHeader.height = image.height; - ktxHeader.depth = 0; - ktxHeader.elements = 0; - ktxHeader.faces = 1; - ktxHeader.mipmapLevels = image.mipmaps; // If it was 0, it means mipmaps should be generated on loading (not for compressed formats) - ktxHeader.keyValueDataSize = 0; // No extra data after the header - - rlGetGlTextureFormats(image.format, &ktxHeader.glInternalFormat, &ktxHeader.glFormat, &ktxHeader.glType); // rlgl module function - ktxHeader.glBaseInternalFormat = ktxHeader.glFormat; // KTX 1.1 only - - // NOTE: We can save into a .ktx all PixelFormats supported by raylib, including compressed formats like DXT, ETC or ASTC - - if (ktxHeader.glFormat == -1) TRACELOG(LOG_WARNING, "IMAGE: GL format not supported for KTX export (%i)", ktxHeader.glFormat); - else - { - memcpy(fileDataPtr, &ktxHeader, sizeof(KTXHeader)); - fileDataPtr += sizeof(KTXHeader); - - int width = image.width; - int height = image.height; - int dataOffset = 0; - - // Save all mipmaps data - for (int i = 0; i < image.mipmaps; i++) - { - unsigned int dataSize = GetPixelDataSize(width, height, image.format); - - memcpy(fileDataPtr, &dataSize, sizeof(unsigned int)); - memcpy(fileDataPtr + 4, (unsigned char *)image.data + dataOffset, dataSize); - - width /= 2; - height /= 2; - dataOffset += dataSize; - fileDataPtr += (4 + dataSize); - } - } - - int success = SaveFileData(fileName, fileData, dataSize); - - RL_FREE(fileData); // Free file data buffer - - // If all data has been written correctly to file, success = 1 - return success; -} -#endif - -#if defined(SUPPORT_FILEFORMAT_PVR) -// Loading PVR image data (uncompressed or PVRT compression) -// NOTE: PVR v2 not supported, use PVR v3 instead -static Image LoadPVR(const unsigned char *fileData, unsigned int fileSize) -{ - unsigned char *fileDataPtr = (unsigned char *)fileData; - - // Required extension: - // GL_IMG_texture_compression_pvrtc - - // Supported tokens (defined by extensions) - // GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG 0x8C00 - // GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG 0x8C02 - -#if 0 // Not used... - // PVR file v2 Header (52 bytes) - typedef struct { - unsigned int headerLength; - unsigned int height; - unsigned int width; - unsigned int numMipmaps; - unsigned int flags; - unsigned int dataLength; - unsigned int bpp; - unsigned int bitmaskRed; - unsigned int bitmaskGreen; - unsigned int bitmaskBlue; - unsigned int bitmaskAlpha; - unsigned int pvrTag; - unsigned int numSurfs; - } PVRHeaderV2; -#endif - - // PVR file v3 Header (52 bytes) - // NOTE: After it could be metadata (15 bytes?) - typedef struct { - char id[4]; - unsigned int flags; - unsigned char channels[4]; // pixelFormat high part - unsigned char channelDepth[4]; // pixelFormat low part - unsigned int colourSpace; - unsigned int channelType; - unsigned int height; - unsigned int width; - unsigned int depth; - unsigned int numSurfaces; - unsigned int numFaces; - unsigned int numMipmaps; - unsigned int metaDataSize; - } PVRHeaderV3; - -#if 0 // Not used... - // Metadata (usually 15 bytes) - typedef struct { - unsigned int devFOURCC; - unsigned int key; - unsigned int dataSize; // Not used? - unsigned char *data; // Not used? - } PVRMetadata; -#endif - - Image image = { 0 }; - - if (fileDataPtr != NULL) - { - // Check PVR image version - unsigned char pvrVersion = fileDataPtr[0]; - - // Load different PVR data formats - if (pvrVersion == 0x50) - { - PVRHeaderV3 *pvrHeader = (PVRHeaderV3 *)fileDataPtr; - - if ((pvrHeader->id[0] != 'P') || (pvrHeader->id[1] != 'V') || (pvrHeader->id[2] != 'R') || (pvrHeader->id[3] != 3)) - { - TRACELOG(LOG_WARNING, "IMAGE: PVR file data not valid"); - } - else - { - fileDataPtr += sizeof(PVRHeaderV3); // Skip header - - image.width = pvrHeader->width; - image.height = pvrHeader->height; - image.mipmaps = pvrHeader->numMipmaps; - - // Check data format - if (((pvrHeader->channels[0] == 'l') && (pvrHeader->channels[1] == 0)) && (pvrHeader->channelDepth[0] == 8)) image.format = PIXELFORMAT_UNCOMPRESSED_GRAYSCALE; - else if (((pvrHeader->channels[0] == 'l') && (pvrHeader->channels[1] == 'a')) && ((pvrHeader->channelDepth[0] == 8) && (pvrHeader->channelDepth[1] == 8))) image.format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA; - else if ((pvrHeader->channels[0] == 'r') && (pvrHeader->channels[1] == 'g') && (pvrHeader->channels[2] == 'b')) - { - if (pvrHeader->channels[3] == 'a') - { - if ((pvrHeader->channelDepth[0] == 5) && (pvrHeader->channelDepth[1] == 5) && (pvrHeader->channelDepth[2] == 5) && (pvrHeader->channelDepth[3] == 1)) image.format = PIXELFORMAT_UNCOMPRESSED_R5G5B5A1; - else if ((pvrHeader->channelDepth[0] == 4) && (pvrHeader->channelDepth[1] == 4) && (pvrHeader->channelDepth[2] == 4) && (pvrHeader->channelDepth[3] == 4)) image.format = PIXELFORMAT_UNCOMPRESSED_R4G4B4A4; - else if ((pvrHeader->channelDepth[0] == 8) && (pvrHeader->channelDepth[1] == 8) && (pvrHeader->channelDepth[2] == 8) && (pvrHeader->channelDepth[3] == 8)) image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; - } - else if (pvrHeader->channels[3] == 0) - { - if ((pvrHeader->channelDepth[0] == 5) && (pvrHeader->channelDepth[1] == 6) && (pvrHeader->channelDepth[2] == 5)) image.format = PIXELFORMAT_UNCOMPRESSED_R5G6B5; - else if ((pvrHeader->channelDepth[0] == 8) && (pvrHeader->channelDepth[1] == 8) && (pvrHeader->channelDepth[2] == 8)) image.format = PIXELFORMAT_UNCOMPRESSED_R8G8B8; - } - } - else if (pvrHeader->channels[0] == 2) image.format = PIXELFORMAT_COMPRESSED_PVRT_RGB; - else if (pvrHeader->channels[0] == 3) image.format = PIXELFORMAT_COMPRESSED_PVRT_RGBA; - - fileDataPtr += pvrHeader->metaDataSize; // Skip meta data header - - // Calculate data size (depends on format) - int bpp = 0; - switch (image.format) - { - case PIXELFORMAT_UNCOMPRESSED_GRAYSCALE: bpp = 8; break; - case PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA: - case PIXELFORMAT_UNCOMPRESSED_R5G5B5A1: - case PIXELFORMAT_UNCOMPRESSED_R5G6B5: - case PIXELFORMAT_UNCOMPRESSED_R4G4B4A4: bpp = 16; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8A8: bpp = 32; break; - case PIXELFORMAT_UNCOMPRESSED_R8G8B8: bpp = 24; break; - case PIXELFORMAT_COMPRESSED_PVRT_RGB: - case PIXELFORMAT_COMPRESSED_PVRT_RGBA: bpp = 4; break; - default: break; - } - - int dataSize = image.width*image.height*bpp/8; // Total data size in bytes - image.data = (unsigned char *)RL_MALLOC(dataSize*sizeof(unsigned char)); - - memcpy(image.data, fileDataPtr, dataSize); - } - } - else if (pvrVersion == 52) TRACELOG(LOG_INFO, "IMAGE: PVRv2 format not supported, update your files to PVRv3"); - } - - return image; -} -#endif - -#if defined(SUPPORT_FILEFORMAT_ASTC) -// Load ASTC compressed image data (ASTC compression) -static Image LoadASTC(const unsigned char *fileData, unsigned int fileSize) -{ - unsigned char *fileDataPtr = (unsigned char *)fileData; - - // Required extensions: - // GL_KHR_texture_compression_astc_hdr - // GL_KHR_texture_compression_astc_ldr - - // Supported tokens (defined by extensions) - // GL_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93b0 - // GL_COMPRESSED_RGBA_ASTC_8x8_KHR 0x93b7 - - // ASTC file Header (16 bytes) - typedef struct { - unsigned char id[4]; // Signature: 0x13 0xAB 0xA1 0x5C - unsigned char blockX; // Block X dimensions - unsigned char blockY; // Block Y dimensions - unsigned char blockZ; // Block Z dimensions (1 for 2D images) - unsigned char width[3]; // Image width in pixels (24bit value) - unsigned char height[3]; // Image height in pixels (24bit value) - unsigned char length[3]; // Image Z-size (1 for 2D images) - } ASTCHeader; - - Image image = { 0 }; - - if (fileDataPtr != NULL) - { - ASTCHeader *astcHeader = (ASTCHeader *)fileDataPtr; - - if ((astcHeader->id[3] != 0x5c) || (astcHeader->id[2] != 0xa1) || (astcHeader->id[1] != 0xab) || (astcHeader->id[0] != 0x13)) - { - TRACELOG(LOG_WARNING, "IMAGE: ASTC file data not valid"); - } - else - { - fileDataPtr += sizeof(ASTCHeader); // Skip header - - // NOTE: Assuming Little Endian (could it be wrong?) - image.width = 0x00000000 | ((int)astcHeader->width[2] << 16) | ((int)astcHeader->width[1] << 8) | ((int)astcHeader->width[0]); - image.height = 0x00000000 | ((int)astcHeader->height[2] << 16) | ((int)astcHeader->height[1] << 8) | ((int)astcHeader->height[0]); - - TRACELOGD("IMAGE: ASTC file data info:"); - TRACELOGD(" > Image width: %i", image.width); - TRACELOGD(" > Image height: %i", image.height); - TRACELOGD(" > Image blocks: %ix%i", astcHeader->blockX, astcHeader->blockY); - - image.mipmaps = 1; // NOTE: ASTC format only contains one mipmap level - - // NOTE: Each block is always stored in 128bit so we can calculate the bpp - int bpp = 128/(astcHeader->blockX*astcHeader->blockY); - - // NOTE: Currently we only support 2 blocks configurations: 4x4 and 8x8 - if ((bpp == 8) || (bpp == 2)) - { - int dataSize = image.width*image.height*bpp/8; // Data size in bytes - - image.data = (unsigned char *)RL_MALLOC(dataSize*sizeof(unsigned char)); - - memcpy(image.data, fileDataPtr, dataSize); - - if (bpp == 8) image.format = PIXELFORMAT_COMPRESSED_ASTC_4x4_RGBA; - else if (bpp == 2) image.format = PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA; - } - else TRACELOG(LOG_WARNING, "IMAGE: ASTC block size configuration not supported"); - } - } - - return image; -} -#endif |