diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/external/rl_gputex.h | 818 | ||||
| -rw-r--r-- | src/rtextures.c | 945 |
2 files changed, 969 insertions, 794 deletions
diff --git a/src/external/rl_gputex.h b/src/external/rl_gputex.h new file mode 100644 index 00000000..22bb7281 --- /dev/null +++ b/src/external/rl_gputex.h @@ -0,0 +1,818 @@ +/********************************************************************************************** +* +* rl_gputex - GPU compressed textures loading and saving +* +* DESCRIPTION: +* +* Load GPU compressed image data from image files provided as memory data arrays, +* data is loaded compressed, ready to be loaded into GPU. +* +* Note that some file formats (DDS, PVR, KTX) also support uncompressed data storage. +* In those cases data is loaded uncompressed and format is returned. +* +* TODO: +* - Implement raylib function: rlGetGlTextureFormats(), required by rl_save_ktx_to_memory() +* - Review rl_load_ktx_from_memory() to support KTX v2.2 specs +* +* CONFIGURATION: +* +* #define RL_GPUTEX_SUPPORT_DDS +* #define RL_GPUTEX_SUPPORT_PKM +* #define RL_GPUTEX_SUPPORT_KTX +* #define RL_GPUTEX_SUPPORT_PVR +* #define RL_GPUTEX_SUPPORT_ASTC +* Define desired file formats to be supported +* +* +* LICENSE: zlib/libpng +* +* Copyright (c) 2013-2022 Ramon Santamaria (@raysan5) +* +* This software is provided "as-is", without any express or implied warranty. In no event +* will the authors be held liable for any damages arising from the use of this software. +* +* Permission is granted to anyone to use this software for any purpose, including commercial +* applications, and to alter it and redistribute it freely, subject to the following restrictions: +* +* 1. The origin of this software must not be misrepresented; you must not claim that you +* wrote the original software. If you use this software in a product, an acknowledgment +* in the product documentation would be appreciated but is not required. +* +* 2. Altered source versions must be plainly marked as such, and must not be misrepresented +* as being the original software. +* +* 3. This notice may not be removed or altered from any source distribution. +* +**********************************************************************************************/ + +#ifndef RL_GPUTEX_H +#define RL_GPUTEX_H + +#ifndef RLAPI + #define RLAPI // Functions defined as 'extern' by default (implicit specifiers) +#endif + +//---------------------------------------------------------------------------------- +// Module Functions Declaration +//---------------------------------------------------------------------------------- +#if defined(__cplusplus) +extern "C" { // Prevents name mangling of functions +#endif + +// Load image data from memory data files +RLAPI void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips); +RLAPI void *rl_load_pkm_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips); +RLAPI void *rl_load_ktx_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips); +RLAPI void *rl_load_pvr_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips); +RLAPI void *rl_load_astc_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips); + +RLAPI int rl_save_ktx_to_memory(const char *fileName, void *data, int width, int height, int format, int mipmaps); // Save image data as KTX file + +#if defined(__cplusplus) +} +#endif + +#endif // RL_GPUTEX_H + + +/*********************************************************************************** +* +* RL_GPUTEX IMPLEMENTATION +* +************************************************************************************/ + +#if defined(RL_GPUTEX_IMPLEMENTATION) + +// Simple log system to avoid RPNG_LOG() calls if required +// NOTE: Avoiding those calls, also avoids const strings memory usage +#define RL_GPUTEX_SHOW_LOG_INFO +#if defined(RL_GPUTEX_SHOW_LOG_INFO) && !defined(LOG) +#define LOG(...) printf(__VA_ARGS__) +#else +#define LOG(...) +#endif + +//---------------------------------------------------------------------------------- +// Module Internal Functions Declaration +//---------------------------------------------------------------------------------- +// Get pixel data size in bytes for certain pixel format +static int get_pixel_data_size(int width, int height, int format); + +//---------------------------------------------------------------------------------- +// Module Functions Definition +//---------------------------------------------------------------------------------- +#if defined(RL_GPUTEX_SUPPORT_DDS) +// Loading DDS from memory image data (compressed or uncompressed) +void *rl_load_dds_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips) +{ + void *image_data = NULL; // Image data pointer + int image_pixel_size = 0; // Image pixel size + + unsigned char *file_data_ptr = (unsigned char *)file_data; + + // 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 rgb_bit_count; + unsigned int r_bit_mask; + unsigned int g_bit_mask; + unsigned int b_bit_mask; + unsigned int a_bit_mask; + } dds_pixel_format; + + // DDS Header (124 bytes) + typedef struct { + unsigned int size; + unsigned int flags; + unsigned int height; + unsigned int width; + unsigned int pitch_or_linear_size; + unsigned int depth; + unsigned int mipmap_count; + unsigned int reserved1[11]; + dds_pixel_format ddspf; + unsigned int caps; + unsigned int caps2; + unsigned int caps3; + unsigned int caps4; + unsigned int reserved2; + } dds_header; + + if (file_data_ptr != NULL) + { + // Verify the type of file + unsigned char *dds_header_id = file_data_ptr; + file_data_ptr += 4; + + if ((dds_header_id[0] != 'D') || (dds_header_id[1] != 'D') || (dds_header_id[2] != 'S') || (dds_header_id[3] != ' ')) + { + LOG("WARNING: IMAGE: DDS file data not valid"); + } + else + { + dds_header *header = (dds_header *)file_data_ptr; + + file_data_ptr += sizeof(dds_header); // Skip header + + *width = header->width; + *height = header->height; + image_pixel_size = header->width*header->height; + + if (header->mipmap_count == 0) *mips = 1; // Parameter not used + else *mips = header->mipmap_count; + + if (header->ddspf.rgb_bit_count == 16) // 16bit mode, no compressed + { + if (header->ddspf.flags == 0x40) // No alpha channel + { + int data_size = image_pixel_size*sizeof(unsigned short); + image_data = RL_MALLOC(data_size); + + memcpy(image_data, file_data_ptr, data_size); + + *format = PIXELFORMAT_UNCOMPRESSED_R5G6B5; + } + else if (header->ddspf.flags == 0x41) // With alpha channel + { + if (header->ddspf.a_bit_mask == 0x8000) // 1bit alpha + { + int data_size = image_pixel_size*sizeof(unsigned short); + image_data = RL_MALLOC(data_size); + + memcpy(image_data, file_data_ptr, data_size); + + unsigned char alpha = 0; + + // NOTE: Data comes as A1R5G5B5, it must be reordered to R5G5B5A1 + for (int i = 0; i < image_pixel_size; 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; + } + + *format = PIXELFORMAT_UNCOMPRESSED_R5G5B5A1; + } + else if (header->ddspf.a_bit_mask == 0xf000) // 4bit alpha + { + int data_size = image_pixel_size*sizeof(unsigned short); + image_data = RL_MALLOC(data_size); + + memcpy(image_data, file_data_ptr, data_size); + + unsigned char alpha = 0; + + // NOTE: Data comes as A4R4G4B4, it must be reordered R4G4B4A4 + for (int i = 0; i < image_pixel_size; 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; + } + + *format = PIXELFORMAT_UNCOMPRESSED_R4G4B4A4; + } + } + } + else if (header->ddspf.flags == 0x40 && header->ddspf.rgb_bit_count == 24) // DDS_RGB, no compressed + { + int data_size = image_pixel_size*3*sizeof(unsigned char); + image_data = RL_MALLOC(data_size); + + memcpy(image_data, file_data_ptr, data_size); + + *format = PIXELFORMAT_UNCOMPRESSED_R8G8B8; + } + else if (header->ddspf.flags == 0x41 && header->ddspf.rgb_bit_count == 32) // DDS_RGBA, no compressed + { + int data_size = image_pixel_size*4*sizeof(unsigned char); + image_data = RL_MALLOC(data_size); + + memcpy(image_data, file_data_ptr, data_size); + + 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_pixel_size*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; + } + + *format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; + } + else if (((header->ddspf.flags == 0x04) || (header->ddspf.flags == 0x05)) && (header->ddspf.fourcc > 0)) // Compressed + { + int data_size = 0; + + // Calculate data size, including all mipmaps + if (header->mipmap_count > 1) data_size = header->pitch_or_linear_size*2; + else data_size = header->pitch_or_linear_size; + + image_data = RL_MALLOC(data_size*sizeof(unsigned char)); + + memcpy(image_data, file_data_ptr, data_size); + + switch (header->ddspf.fourcc) + { + case FOURCC_DXT1: + { + if (header->ddspf.flags == 0x04) *format = PIXELFORMAT_COMPRESSED_DXT1_RGB; + else *format = PIXELFORMAT_COMPRESSED_DXT1_RGBA; + } break; + case FOURCC_DXT3: *format = PIXELFORMAT_COMPRESSED_DXT3_RGBA; break; + case FOURCC_DXT5: *format = PIXELFORMAT_COMPRESSED_DXT5_RGBA; break; + default: break; + } + } + } + } + + return image_data; +} +#endif + +#if defined(RL_GPUTEX_SUPPORT_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) +void *rl_load_pkm_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips) +{ + void *image_data = NULL; // Image data pointer + + unsigned char *file_data_ptr = (unsigned char *)file_data; + + // 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) (orig_width rounded to multiple of 4) + unsigned short height; // Texture height (big-endian) (orig_height rounded to multiple of 4) + unsigned short orig_width; // Original width (big-endian) + unsigned short orig_height; // Original height (big-endian) + } pkm_header; + + // 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) + + if (file_data_ptr != NULL) + { + pkm_header *header = (pkm_header *)file_data_ptr; + + if ((header->id[0] != 'P') || (header->id[1] != 'K') || (header->id[2] != 'M') || (header->id[3] != ' ')) + { + LOG("WARNING: IMAGE: PKM file data not valid"); + } + else + { + file_data_ptr += sizeof(pkm_header); // Skip header + + // NOTE: format, width and height come as big-endian, data must be swapped to little-endian + header->format = ((header->format & 0x00FF) << 8) | ((header->format & 0xFF00) >> 8); + header->width = ((header->width & 0x00FF) << 8) | ((header->width & 0xFF00) >> 8); + header->height = ((header->height & 0x00FF) << 8) | ((header->height & 0xFF00) >> 8); + + *width = header->width; + *height = header->height; + *mips = 1; + + int bpp = 4; + if (header->format == 3) bpp = 8; + + int data_size = (*width)*(*height)*bpp/8; // Total data size in bytes + + image_data = RL_MALLOC(data_size*sizeof(unsigned char)); + + memcpy(image_data, file_data_ptr, data_size); + + if (header->format == 0) *format = PIXELFORMAT_COMPRESSED_ETC1_RGB; + else if (header->format == 1) *format = PIXELFORMAT_COMPRESSED_ETC2_RGB; + else if (header->format == 3) *format = PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA; + } + } + + return image_data; +} +#endif + +#if defined(RL_GPUTEX_SUPPORT_KTX) +// Load KTX compressed image data (ETC1/ETC2 compression) +// TODO: Review KTX loading, many things changed! +void *rl_load_ktx_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips) +{ + void *image_data = NULL; // Image data pointer + + unsigned char *file_data_ptr = (unsigned char *)file_data; + + // 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/ + + // KTX 1.1 Header + // 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 gl_type; // For compressed textures, glType must equal 0 + unsigned int gl_type_size; // For compressed texture data, usually 1 + unsigned int gl_format; // For compressed textures is 0 + unsigned int gl_internal_format; // Compressed internal format + unsigned int gl_base_internal_format; // 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 mipmap_levels; // Non-mipmapped textures = 1 + unsigned int key_value_data_size; // Used to encode any arbitrary data... + } ktx_header; + + // NOTE: Before start of every mipmap data block, we have: unsigned int data_size + + if (file_data_ptr != NULL) + { + ktx_header *header = (ktx_header *)file_data_ptr; + + if ((header->id[1] != 'K') || (header->id[2] != 'T') || (header->id[3] != 'X') || + (header->id[4] != ' ') || (header->id[5] != '1') || (header->id[6] != '1')) + { + LOG("WARNING: IMAGE: KTX file data not valid"); + } + else + { + file_data_ptr += sizeof(ktx_header); // Move file data pointer + + *width = header->width; + *height = header->height; + *mips = header->mipmap_levels; + + file_data_ptr += header->key_value_data_size; // Skip value data size + + int data_size = ((int *)file_data_ptr)[0]; + file_data_ptr += sizeof(int); + + image_data = RL_MALLOC(data_size*sizeof(unsigned char)); + + memcpy(image_data, file_data_ptr, data_size); + + if (header->gl_internal_format == 0x8D64) *format = PIXELFORMAT_COMPRESSED_ETC1_RGB; + else if (header->gl_internal_format == 0x9274) *format = PIXELFORMAT_COMPRESSED_ETC2_RGB; + else if (header->gl_internal_format == 0x9278) *format = PIXELFORMAT_COMPRESSED_ETC2_EAC_RGBA; + + // TODO: Support uncompressed data formats? Right now it returns format = 0! + } + } + + return image_data; +} + +// Save image data as KTX file +// NOTE: By default KTX 1.1 spec is used, 2.0 is still on draft (01Oct2018) +// TODO: Review KTX saving, many things changed! +int rl_save_ktx(const char *file_name, void *data, int width, int height, int format, int mipmaps) +{ + // 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/ - Final specs by 2021-04-18 + 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 gl_type; // For compressed textures, glType must equal 0 + unsigned int gl_type_size; // For compressed texture data, usually 1 + unsigned int gl_format; // For compressed textures is 0 + unsigned int gl_internal_format; // Compressed internal format + unsigned int gl_base_internal_format; // 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 mipmap_levels; // Non-mipmapped textures = 1 + unsigned int key_value_data_size; // 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... + } ktx_header; + + // Calculate file data_size required + int data_size = sizeof(ktx_header); + + for (int i = 0, width = width, height = height; i < mipmaps; i++) + { + data_size += get_pixel_data_size(width, height, format); + width /= 2; height /= 2; + } + + unsigned char *file_data = RL_CALLOC(data_size, 1); + unsigned char *file_data_ptr = file_data; + + ktx_header header = { 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 ktx_identifier[12] = { 0xAB, 'K', 'T', 'X', ' ', '1', '1', 0xBB, '\r', '\n', 0x1A, '\n' }; + + // Get the image header + memcpy(header.id, ktx_identifier, 12); // KTX 1.1 signature + header.endianness = 0; + header.gl_type = 0; // Obtained from format + header.gl_type_size = 1; + header.gl_format = 0; // Obtained from format + header.gl_internal_format = 0; // Obtained from format + header.gl_base_internal_format = 0; + header.width = width; + header.height = height; + header.depth = 0; + header.elements = 0; + header.faces = 1; + header.mipmap_levels = mipmaps; // If it was 0, it means mipmaps should be generated on loading (not for compressed formats) + header.key_value_data_size = 0; // No extra data after the header + + rlGetGlTextureFormats(format, &header.gl_internal_format, &header.gl_format, &header.gl_type); // rlgl module function + header.gl_base_internal_format = header.gl_format; // 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 (header.gl_format == -1) LOG("WARNING: IMAGE: GL format not supported for KTX export (%i)", header.gl_format); + else + { + memcpy(file_data_ptr, &header, sizeof(ktx_header)); + file_data_ptr += sizeof(ktx_header); + + int temp_width = width; + int temp_height = height; + int data_offset = 0; + + // Save all mipmaps data + for (int i = 0; i < mipmaps; i++) + { + unsigned int data_size = get_pixel_data_size(temp_width, temp_height, format); + + memcpy(file_data_ptr, &data_size, sizeof(unsigned int)); + memcpy(file_data_ptr + 4, (unsigned char *)data + data_offset, data_size); + + temp_width /= 2; + temp_height /= 2; + data_offset += data_size; + file_data_ptr += (4 + data_size); + } + } + + // Save file data to file + int success = false; + FILE *file = fopen(file_name, "wb"); + + if (file != NULL) + { + unsigned int count = (unsigned int)fwrite(file_data, sizeof(unsigned char), data_size, file); + + if (count == 0) LOG("WARNING: FILEIO: [%s] Failed to write file", file_name); + else if (count != data_size) LOG("WARNING: FILEIO: [%s] File partially written", file_name); + else LOG("INFO: FILEIO: [%s] File saved successfully", file_name); + + int result = fclose(file); + if (result == 0) success = true; + } + else LOG("WARNING: FILEIO: [%s] Failed to open file", file_name); + + RL_FREE(file_data); // Free file data buffer + + // If all data has been written correctly to file, success = 1 + return success; +} +#endif + +#if defined(RL_GPUTEX_SUPPORT_PVR) +// Loading PVR image data (uncompressed or PVRT compression) +// NOTE: PVR v2 not supported, use PVR v3 instead +void *rl_load_pvr_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips) +{ + void *image_data = NULL; // Image data pointer + + unsigned char *file_data_ptr = (unsigned char *)file_data; + + // 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 channel_depth[4]; // pixelFormat low part + unsigned int color_space; + unsigned int channel_type; + unsigned int height; + unsigned int width; + unsigned int depth; + unsigned int num_surfaces; + unsigned int num_faces; + unsigned int num_mipmaps; + unsigned int metadata_size; + } pvr_header; + +#if 0 // Not used... + // Metadata (usually 15 bytes) + typedef struct { + unsigned int devFOURCC; + unsigned int key; + unsigned int data_size; // Not used? + unsigned char *data; // Not used? + } PVRMetadata; +#endif + + if (file_data_ptr != NULL) + { + // Check PVR image version + unsigned char pvr_version = file_data_ptr[0]; + + // Load different PVR data formats + if (pvr_version == 0x50) + { + pvr_header *header = (pvr_header *)file_data_ptr; + + if ((header->id[0] != 'P') || (header->id[1] != 'V') || (header->id[2] != 'R') || (header->id[3] != 3)) + { + LOG("WARNING: IMAGE: PVR file data not valid"); + } + else + { + file_data_ptr += sizeof(pvr_header); // Skip header + + *width = header->width; + *height = header->height; + *mips = header->num_mipmaps; + + // Check data format + if (((header->channels[0] == 'l') && (header->channels[1] == 0)) && (header->channel_depth[0] == 8)) *format = PIXELFORMAT_UNCOMPRESSED_GRAYSCALE; + else if (((header->channels[0] == 'l') && (header->channels[1] == 'a')) && ((header->channel_depth[0] == 8) && (header->channel_depth[1] == 8))) *format = PIXELFORMAT_UNCOMPRESSED_GRAY_ALPHA; + else if ((header->channels[0] == 'r') && (header->channels[1] == 'g') && (header->channels[2] == 'b')) + { + if (header->channels[3] == 'a') + { + if ((header->channel_depth[0] == 5) && (header->channel_depth[1] == 5) && (header->channel_depth[2] == 5) && (header->channel_depth[3] == 1)) *format = PIXELFORMAT_UNCOMPRESSED_R5G5B5A1; + else if ((header->channel_depth[0] == 4) && (header->channel_depth[1] == 4) && (header->channel_depth[2] == 4) && (header->channel_depth[3] == 4)) *format = PIXELFORMAT_UNCOMPRESSED_R4G4B4A4; + else if ((header->channel_depth[0] == 8) && (header->channel_depth[1] == 8) && (header->channel_depth[2] == 8) && (header->channel_depth[3] == 8)) *format = PIXELFORMAT_UNCOMPRESSED_R8G8B8A8; + } + else if (header->channels[3] == 0) + { + if ((header->channel_depth[0] == 5) && (header->channel_depth[1] == 6) && (header->channel_depth[2] == 5)) *format = PIXELFORMAT_UNCOMPRESSED_R5G6B5; + else if ((header->channel_depth[0] == 8) && (header->channel_depth[1] == 8) && (header->channel_depth[2] == 8)) *format = PIXELFORMAT_UNCOMPRESSED_R8G8B8; + } + } + else if (header->channels[0] == 2) *format = PIXELFORMAT_COMPRESSED_PVRT_RGB; + else if (header->channels[0] == 3) *format = PIXELFORMAT_COMPRESSED_PVRT_RGBA; + + file_data_ptr += header->metadata_size; // Skip meta data header + + // Calculate data size (depends on format) + int bpp = 0; + switch (*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 data_size = (*width)*(*height)*bpp/8; // Total data size in bytes + image_data = RL_MALLOC(data_size*sizeof(unsigned char)); + + memcpy(image_data, file_data_ptr, data_size); + } + } + else if (pvr_version == 52) LOG("INFO: IMAGE: PVRv2 format not supported, update your files to PVRv3"); + } + + return image_data; +} +#endif + +#if defined(RL_GPUTEX_SUPPORT_ASTC) +// Load ASTC compressed image data (ASTC compression) +void *rl_load_astc_from_memory(const unsigned char *file_data, unsigned int file_size, int *width, int *height, int *format, int *mips) +{ + void *image_data = NULL; // Image data pointer + + unsigned char *file_data_ptr = (unsigned char *)file_data; + + // 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]; // void *width in pixels (24bit value) + unsigned char height[3]; // void *height in pixels (24bit value) + unsigned char length[3]; // void *Z-size (1 for 2D images) + } astc_header; + + if (file_data_ptr != NULL) + { + astc_header *header = (astc_header *)file_data_ptr; + + if ((header->id[3] != 0x5c) || (header->id[2] != 0xa1) || (header->id[1] != 0xab) || (header->id[0] != 0x13)) + { + LOG("WARNING: IMAGE: ASTC file data not valid"); + } + else + { + file_data_ptr += sizeof(astc_header); // Skip header + + // NOTE: Assuming Little Endian (could it be wrong?) + *width = 0x00000000 | ((int)header->width[2] << 16) | ((int)header->width[1] << 8) | ((int)header->width[0]); + *height = 0x00000000 | ((int)header->height[2] << 16) | ((int)header->height[1] << 8) | ((int)header->height[0]); + *mips = 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/(header->blockX*header->blockY); + + // NOTE: Currently we only support 2 blocks configurations: 4x4 and 8x8 + if ((bpp == 8) || (bpp == 2)) + { + int data_size = (*width)*(*height)*bpp/8; // Data size in bytes + + image_data = RL_MALLOC(data_size*sizeof(unsigned char)); + + memcpy(image_data, file_data_ptr, data_size); + + if (bpp == 8) *format = PIXELFORMAT_COMPRESSED_ASTC_4x4_RGBA; + else if (bpp == 2) *format = PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA; + } + else LOG("WARNING: IMAGE: ASTC block size configuration not supported"); + } + } + + return image_data; +} +#endif + +//---------------------------------------------------------------------------------- +// Module Internal Functions Definition +//---------------------------------------------------------------------------------- +// Get pixel data size in bytes for certain pixel format +static int get_pixel_data_size(int width, int height, int format) +{ + int data_size = 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; + } + + data_size = 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)) data_size = 8; + else if ((format >= PIXELFORMAT_COMPRESSED_DXT3_RGBA) && (format < PIXELFORMAT_COMPRESSED_ASTC_8x8_RGBA)) data_size = 16; + } + + return data_size; +} + +#endif // RL_GPUTEX_IMPLEMENTATION diff --git a/src/rtextures.c b/src/rtextures.c index d602081b..12ba4923 100644 --- a/src/rtextures.c +++ b/src/rtextures.c @@ -104,6 +104,22 @@ #define STBI_NO_HDR #endif +#if defined(SUPPORT_FILEFORMAT_DDS) + #define RL_GPUTEX_SUPPORT_DDS +#endif +#if defined(SUPPORT_FILEFORMAT_PKM) + #define RL_GPUTEX_SUPPORT_PKM +#endif +#if defined(SUPPORT_FILEFORMAT_KTX) + #define RL_GPUTEX_SUPPORT_KTX +#endif +#if defined(SUPPORT_FILEFORMAT_PVR) + #define RL_GPUTEX_SUPPORT_PVR +#endif +#if defined(SUPPORT_FILEFORMAT_ASTC) + #define RL_GPUTEX_SUPPORT_ASTC +#endif + // Image fileformats not supported by default #define STBI_NO_PIC #define STBI_NO_PNM // Image format .ppm and .pgm @@ -130,6 +146,17 @@ // NOTE: Used to read image data (multiple formats support) #endif +#if (defined(SUPPORT_FILEFORMAT_DDS) || \ + defined(SUPPORT_FILEFORMAT_PKM) || \ + defined(SUPPORT_FILEFORMAT_KTX) || \ + defined(SUPPORT_FILEFORMAT_PVR) || \ + defined(SUPPORT_FILEFORMAT_ASTC)) + + #define RL_GPUTEX_IMPLEMENTATION + #include "external/rl_gputex.h" // Required for: rl_load_xxx_from_memory() + // NOTE: Used to read compressed textures data (multiple formats support) +#endif + #if defined(SUPPORT_FILEFORMAT_QOI) #define QOI_MALLOC RL_MALLOC #define QOI_FREE RL_FREE @@ -185,23 +212,6 @@ //---------------------------------------------------------------------------------- // 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) //---------------------------------------------------------------------------------- @@ -333,7 +343,7 @@ Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, i #if defined(SUPPORT_FILEFORMAT_PSD) || (strcmp(fileType, ".psd") == 0) #endif - ) + ) { #if defined(STBI_REQUIRED) // NOTE: Using stb_image to load images (Supports multiple image formats) @@ -390,19 +400,35 @@ Image LoadImageFromMemory(const char *fileType, const unsigned char *fileData, i } #endif #if defined(SUPPORT_FILEFORMAT_DDS) - else if (strcmp(fileType, ".dds") == 0) image = LoadDDS(fileData, dataSize); + else if (strcmp(fileType, ".dds") == 0) + { + int format = 0; + image.data = rl_load_dds_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps); + } #endif #if defined(SUPPORT_FILEFORMAT_PKM) - else if (strcmp(fileType, ".pkm") == 0) image = LoadPKM(fileData, dataSize); + else if (strcmp(fileType, ".pkm") == 0) + { + image.data = rl_load_pkm_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps); + } #endif #if defined(SUPPORT_FILEFORMAT_KTX) - else if (strcmp(fileType, ".ktx") == 0) image = LoadKTX(fileData, dataSize); + else if (strcmp(fileType, ".ktx") == 0) + { + image.data = rl_load_ktx_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps); + } #endif #if defined(SUPPORT_FILEFORMAT_PVR) - else if (strcmp(fileType, ".pvr") == 0) image = LoadPVR(fileData, dataSize); + else if (strcmp(fileType, ".pvr") == 0) + { + image.data = rl_load_pvr_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps); + } #endif #if defined(SUPPORT_FILEFORMAT_ASTC) - else if (strcmp(fileType, ".astc") == 0) image = LoadASTC(fileData, dataSize); + else if (strcmp(fileType, ".astc") == 0) + { + image.data = rl_load_astc_from_memory(fileData, dataSize, &image.width, &image.height, &image.format, &image.mipmaps); + } #endif else TRACELOG(LOG_WARNING, "IMAGE: Data format not supported"); @@ -528,7 +554,10 @@ bool ExportImage(Image image, const char *fileName) } #endif #if defined(SUPPORT_FILEFORMAT_KTX) - else if (IsFileExtension(fileName, ".ktx")) success = SaveKTX(image, fileName); + else if (IsFileExtension(fileName, ".ktx")) + { + success = rl_save_ktx(fileName, image.data, image.width, image.height, image.format, image.mipmaps); + } #endif else if (IsFileExtension(fileName, ".raw")) { @@ -3253,104 +3282,6 @@ void DrawTextureRec(Texture2D texture, Rectangle source, Vector2 position, Color 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) -{ - // WARNING: This solution only works if TEXTURE_WRAP_REPEAT is supported, - // NPOT textures supported is required and OpenGL ES 2.0 could not support it - 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! - if ((source.width == 0) || (source.height == 0)) return; - - 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) @@ -3474,6 +3405,104 @@ void DrawTexturePro(Texture2D texture, Rectangle source, Rectangle dest, Vector2 } } +// 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) +{ + // WARNING: This solution only works if TEXTURE_WRAP_REPEAT is supported, + // NPOT textures supported is required and OpenGL ES 2.0 could not support it + 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! + if ((source.width == 0) || (source.height == 0)) return; + + 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); + } + } + } +} + // 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) { @@ -4106,678 +4135,6 @@ int GetPixelDataSize(int width, int height, int format) //---------------------------------------------------------------------------------- // 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) -// TODO: Review KTX loading, many things changed! -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; - - // TODO: Support uncompressed data formats? Right now it returns format = 0! - } - } - - return image; -} - -// Save image data as KTX file -// NOTE: By default KTX 1.1 spec is used, 2.0 is still on draft (01Oct2018) -// TODO: Review KTX saving, many things changed! -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/ - Final specs by 2021-04-18 - 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 colorSpace; - 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 - // Get pixel data from image as Vector4 array (float normalized) static Vector4 *LoadImageDataNormalized(Image image) { |