diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/raylib.h | 1 | ||||
| -rw-r--r-- | src/textures.c | 37 |
2 files changed, 38 insertions, 0 deletions
diff --git a/src/raylib.h b/src/raylib.h index 75bd883d..01699ae7 100644 --- a/src/raylib.h +++ b/src/raylib.h @@ -869,6 +869,7 @@ RLAPI void UnloadImage(Image image); RLAPI void UnloadTexture(Texture2D texture); // Unload texture from GPU memory (VRAM) RLAPI void UnloadRenderTexture(RenderTexture2D target); // Unload render texture from GPU memory (VRAM) RLAPI Color *GetImageData(Image image); // Get pixel data from image as a Color struct array +RLAPI int GetImageDataSize(Image image); // Get image data size in bytes RLAPI Image GetTextureData(Texture2D texture); // Get pixel data from GPU texture and return an Image RLAPI void UpdateTexture(Texture2D texture, const void *pixels); // Update GPU texture with new data RLAPI void SaveImageAs(const char *fileName, Image image); // Save image to a PNG file diff --git a/src/textures.c b/src/textures.c index fd2fae0d..9abee62b 100644 --- a/src/textures.c +++ b/src/textures.c @@ -515,6 +515,43 @@ Color *GetImageData(Image image) return pixels; } +// Get pixel data size in bytes (image or texture) +// NOTE: Size depends on pixel format +int GetPixelDataSize(int width, int height, int format) +{ + int dataSize = 0; // Size in bytes + int bpp = 0; // Bits per pixel + + switch (format) + { + case UNCOMPRESSED_GRAYSCALE: bpp = 8; break; + case UNCOMPRESSED_GRAY_ALPHA: + case UNCOMPRESSED_R5G6B5: + case UNCOMPRESSED_R5G5B5A1: + case UNCOMPRESSED_R4G4B4A4: bpp = 16; break; + case UNCOMPRESSED_R8G8B8A8: bpp = 32; break; + case UNCOMPRESSED_R8G8B8: bpp = 24; break; + case UNCOMPRESSED_R32G32B32: bpp = 32*3; break; + case UNCOMPRESSED_R32G32B32A32: bpp = 32*4; break; + case COMPRESSED_DXT1_RGB: + case COMPRESSED_DXT1_RGBA: + case COMPRESSED_ETC1_RGB: + case COMPRESSED_ETC2_RGB: + case COMPRESSED_PVRT_RGB: + case COMPRESSED_PVRT_RGBA: bpp = 4; break; + case COMPRESSED_DXT3_RGBA: + case COMPRESSED_DXT5_RGBA: + case COMPRESSED_ETC2_EAC_RGBA: + case COMPRESSED_ASTC_4x4_RGBA: bpp = 8; break; + case COMPRESSED_ASTC_8x8_RGBA: bpp = 2; break; + default: break; + } + + dataSize = width*height*bpp/8; // Total data size in bytes + + return dataSize; +} + // Get pixel data from GPU texture and return an Image // NOTE: Compressed texture formats not supported Image GetTextureData(Texture2D texture) |