/* =========================================================================== Copyright (C) 1999-2005 Id Software, Inc. This file is part of Quake III Arena source code. Quake III Arena source code is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Quake III Arena source code is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Quake III Arena source code; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA =========================================================================== */ // tr_image.c #include "tr_local.h" #include #if defined (_MSC_VER) # pragma warning (disable: 4611) // setjmp and C++ destructors #endif #define IMAGE_HASH_SIZE 1024 static image_t* hashTable[IMAGE_HASH_SIZE]; static byte s_intensitytable[256]; static int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR; static int gl_filter_max = GL_LINEAR; typedef struct { const char* name; int minimize, maximize; } textureMode_t; static const textureMode_t modes[] = { { "GL_NEAREST", GL_NEAREST, GL_NEAREST }, { "GL_LINEAR", GL_LINEAR, GL_LINEAR }, { "GL_NEAREST_MIPMAP_NEAREST", GL_NEAREST_MIPMAP_NEAREST, GL_NEAREST }, { "GL_LINEAR_MIPMAP_NEAREST", GL_LINEAR_MIPMAP_NEAREST, GL_LINEAR }, { "GL_NEAREST_MIPMAP_LINEAR", GL_NEAREST_MIPMAP_LINEAR, GL_NEAREST }, { "GL_LINEAR_MIPMAP_LINEAR", GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR }, { 0 } }; void GL_TextureMode( const char* string ) { int i; for (i = 0; modes[i].name; ++i) { if ( !Q_stricmp( modes[i].name, string ) ) { break; } } if (!modes[i].name) { ri.Printf( PRINT_ALL, "bad filter name\n" ); return; } gl_filter_min = modes[i].minimize; gl_filter_max = modes[i].maximize; // change all the existing mipmap texture objects for ( i = 0 ; i < tr.numImages ; i++ ) { const image_t* glt = tr.images[ i ]; if ( !(glt->flags & IMG_NOMIPMAP) ) { GL_Bind( glt ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max ); } } } void R_ImageList_f( void ) { int i, vram = 0; ri.Printf( PRINT_ALL, "\nwide high MPI W format name\n" ); for ( i = 0; i < tr.numImages; ++i ) { const image_t* image = tr.images[i]; GL_Bind( image ); GLint compressed; qglGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_COMPRESSED_ARB, &compressed ); if (compressed) qglGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB, &compressed ); else compressed = image->width * image->height; if ( !(image->flags & IMG_NOMIPMAP) && (image->width > 1) && (image->height > 1) ) vram += compressed * 1.33f; // will overestimate, but that's what we want anyway vram += compressed; ri.Printf( PRINT_ALL, "%4i %4i %c%c%c ", image->width, image->height, (image->flags & IMG_NOMIPMAP) ? ' ' : 'M', (image->flags & IMG_NOPICMIP) ? ' ' : 'P', (image->flags & IMG_NOIMANIP) ? ' ' : 'I' ); switch ( image->wrapClampMode ) { case GL_REPEAT: ri.Printf( PRINT_ALL, "R " ); break; case GL_CLAMP: ri.Printf( PRINT_ALL, "C " ); break; case GL_CLAMP_TO_EDGE: ri.Printf( PRINT_ALL, "E " ); break; default: ri.Printf( PRINT_ALL, "? " ); break; } switch ( image->format ) { case GL_RGB: ri.Printf( PRINT_ALL, "RGB " ); break; case GL_RGB5: ri.Printf( PRINT_ALL, "RGB5 " ); break; case GL_RGB8: ri.Printf( PRINT_ALL, "RGB8 " ); break; case GL_RGBA: ri.Printf( PRINT_ALL, "RGBA " ); break; case GL_RGBA4: ri.Printf( PRINT_ALL, "RGBA4 " ); break; case GL_RGBA8: ri.Printf( PRINT_ALL, "RGBA8 " ); break; case GL_LUMINANCE_ALPHA: ri.Printf( PRINT_ALL, "L8A8 " ); break; case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: ri.Printf( PRINT_ALL, "DXT1 " ); break; default: ri.Printf( PRINT_ALL, "%5i ", image->format ); break; } ri.Printf( PRINT_ALL, " %s\n", image->name ); } ri.Printf( PRINT_ALL, "---------\n" ); ri.Printf( PRINT_ALL, "%i images\n", tr.numImages ); // just assume/pretend that everything is 4-component ri.Printf( PRINT_ALL, "Estimated VRAM use: %iMB\n\n", vram / (1024 * 1024 / 4) ); } /////////////////////////////////////////////////////////////// /* ================ Used to resample images in a more general than quartering fashion. This will only be filtered properly if the resampled size is greater than half the original size. If a larger shrinking is needed, use the mipmap function before or after. ================ */ static void ResampleTexture( unsigned *in, int inwidth, int inheight, unsigned *out, int outwidth, int outheight ) { int i, j; unsigned *inrow, *inrow2; unsigned frac, fracstep; unsigned p1[2048], p2[2048]; byte *pix1, *pix2, *pix3, *pix4; if (outwidth>2048) ri.Error(ERR_DROP, "ResampleTexture: max width"); fracstep = inwidth*0x10000/outwidth; frac = fracstep>>2; for ( i=0 ; i>16); frac += fracstep; } frac = 3*(fracstep>>2); for ( i=0 ; i>16); frac += fracstep; } for (i=0 ; i> 1; for (j=0 ; j>2; ((byte *)(out+j))[1] = (pix1[1] + pix2[1] + pix3[1] + pix4[1])>>2; ((byte *)(out+j))[2] = (pix1[2] + pix2[2] + pix3[2] + pix4[2])>>2; ((byte *)(out+j))[3] = (pix1[3] + pix2[3] + pix3[3] + pix4[3])>>2; } } } // scale up the pixel values in a texture to increase the lighting range static void R_LightScaleTexture( byte* p, int width, int height ) { const int pixels = width * height; for (int i = 0 ; i < pixels; ++i) { p[0] = s_intensitytable[p[0]]; p[1] = s_intensitytable[p[1]]; p[2] = s_intensitytable[p[2]]; p += 4; } } // operates in place, quartering the size of the texture - proper linear filter static void R_MipMap( unsigned* in, int inWidth, int inHeight ) { int i, j, k; byte *outpix; int total; int outWidth = inWidth >> 1; int outHeight = inHeight >> 1; unsigned* temp = (unsigned*)ri.Hunk_AllocateTempMemory( outWidth * outHeight * 4 ); int inWidthMask = inWidth - 1; int inHeightMask = inHeight - 1; for ( i = 0 ; i < outHeight ; i++ ) { for ( j = 0 ; j < outWidth ; j++ ) { outpix = (byte *) ( temp + i * outWidth + j ); for ( k = 0 ; k < 4 ; k++ ) { total = 1 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + 1 * ((byte *)&in[ ((i*2-1)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + 4 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + 4 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + 4 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + 4 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2+1)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k] + 1 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2-1)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2)&inWidthMask) ])[k] + 2 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2+1)&inWidthMask) ])[k] + 1 * ((byte *)&in[ ((i*2+2)&inHeightMask)*inWidth + ((j*2+2)&inWidthMask) ])[k]; outpix[k] = total / 36; } } } Com_Memcpy( in, temp, outWidth * outHeight * 4 ); ri.Hunk_FreeTempMemory( temp ); } // apply a color blend over a set of pixels - used for r_colorMipLevels static void R_BlendOverTexture( byte *data, int pixelCount, const byte blend[4] ) { int premult[3]; int inverseAlpha = 255 - blend[3]; premult[0] = blend[0] * blend[3]; premult[1] = blend[1] * blend[3]; premult[2] = blend[2] * blend[3]; for (int i = 0; i < pixelCount; ++i, data+=4) { data[0] = ( data[0] * inverseAlpha + premult[0] ) >> 9; data[1] = ( data[1] * inverseAlpha + premult[1] ) >> 9; data[2] = ( data[2] * inverseAlpha + premult[2] ) >> 9; } } static const byte mipBlendColors[16][4] = { {0,0,0,0}, {255,0,0,128}, {0,255,0,128}, {0,0,255,128}, {255,0,0,128}, {0,255,0,128}, {0,0,255,128}, {255,0,0,128}, {0,255,0,128}, {0,0,255,128}, {255,0,0,128}, {0,255,0,128}, {0,0,255,128}, {255,0,0,128}, {0,255,0,128}, {0,0,255,128}, }; // note that the "32" here is for the image's STRIDE - it has nothing to do with the actual COMPONENTS static void Upload32( image_t* image, unsigned int* data ) { int scaled_width, scaled_height; // convert to exact power of 2 sizes // for ( scaled_width = 1; scaled_width < image->width; scaled_width <<= 1 ) ; for ( scaled_height = 1; scaled_height < image->height; scaled_height <<=1 ) ; if ( r_roundImagesDown->integer && scaled_width > image->width ) scaled_width >>= 1; if ( r_roundImagesDown->integer && scaled_height > image->height ) scaled_height >>= 1; RI_AutoPtr pResampled; if ( scaled_width != image->width || scaled_height != image->height ) { pResampled.Alloc( scaled_width * scaled_height * 4 ); ResampleTexture( data, image->width, image->height, pResampled.Get(), scaled_width, scaled_height ); data = pResampled.Get(); image->width = scaled_width; image->height = scaled_height; } // perform optional picmip operation if ( !(image->flags & IMG_NOPICMIP) ) { scaled_width >>= r_picmip->integer; scaled_height >>= r_picmip->integer; } // clamp to minimum size scaled_width = max( scaled_width, 1 ); scaled_height = max( scaled_height, 1 ); // clamp to the current upper OpenGL limit // scale both axis down equally so we don't have to // deal with a half mip resampling // while ( scaled_width > glInfo.maxTextureSize || scaled_height > glInfo.maxTextureSize ) { scaled_width >>= 1; scaled_height >>= 1; } // validate and/or override the internal format switch (image->format) { case GL_RGB: image->format = GL_RGB8; break; case GL_RGBA: image->format = GL_RGBA8; break; case GL_LUMINANCE_ALPHA: break; default: ri.Error( ERR_DROP, "Upload32: Invalid format %d\n", image->format ); } RI_AutoPtr pScaled( sizeof(unsigned) * scaled_width * scaled_height ); // copy or resample data as appropriate for first MIP level if ( ( scaled_width == image->width ) && ( scaled_height == image->height ) ) { if ( image->flags & IMG_NOMIPMAP ) { qglTexImage2D( GL_TEXTURE_2D, 0, image->format, image->width, image->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data ); goto done; } Com_Memcpy( pScaled, data, image->width * image->height * 4 ); } else { // use the normal mip-mapping function to go down from here while ( image->width > scaled_width || image->height > scaled_height ) { R_MipMap( (unsigned*)data, image->width, image->height ); image->width = max( image->width >> 1, 1 ); image->height = max( image->height >> 1, 1 ); } Com_Memcpy( pScaled, data, image->width * image->height * 4 ); } if ( !(image->flags & IMG_NOIMANIP) ) R_LightScaleTexture( pScaled.Get(), scaled_width, scaled_height ); qglTexImage2D( GL_TEXTURE_2D, 0, image->format, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pScaled ); if ( !(image->flags & IMG_NOMIPMAP) ) { int miplevel = 0; while (scaled_width > 1 || scaled_height > 1) { R_MipMap( pScaled.Get(), scaled_width, scaled_height ); scaled_width = max( scaled_width >> 1, 1 ); scaled_height = max( scaled_height >> 1, 1 ); ++miplevel; if ( r_colorMipLevels->integer ) R_BlendOverTexture( pScaled, scaled_width * scaled_height, mipBlendColors[miplevel] ); qglTexImage2D( GL_TEXTURE_2D, miplevel, image->format, scaled_width, scaled_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pScaled ); } } done: qglGetTexLevelParameteriv( GL_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, (GLint*)&image->format ); if ( glInfo.maxAnisotropy >= 2 && r_ext_max_anisotropy->integer >= 2 ) qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, min( r_ext_max_anisotropy->integer, glInfo.maxAnisotropy ) ); if ( image->flags & IMG_NOMIPMAP ) { qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); } else { qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max ); } GL_CheckErrors(); } void R_UploadLightmapTile( image_t* image, byte* pic, int x, int y, int width, int height ) { if ( !(image->flags & IMG_LMATLAS) ) ri.Error( ERR_DROP, "R_UploadLightmapTile: IMG_LMATLAS flag not defined\n" ); GL_Bind( image ); qglTexSubImage2D( GL_TEXTURE_2D, 0, x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pic ); GL_CheckErrors(); } // this is the only way any image_t are created // !!! i'm pretty sure this DOESN'T work correctly for non-POT images image_t* R_CreateImage( const char* name, byte* pic, int width, int height, GLenum format, int flags, int glWrapClampMode ) { if (strlen(name) >= MAX_QPATH) ri.Error( ERR_DROP, "R_CreateImage: \"%s\" is too long\n", name ); if ( tr.numImages == MAX_DRAWIMAGES ) ri.Error( ERR_DROP, "R_CreateImage: MAX_DRAWIMAGES hit\n" ); image_t* image = tr.images[tr.numImages] = RI_New(); qglGenTextures( 1, &image->texnum ); tr.numImages++; strcpy( image->name, name ); image->format = format; image->flags = flags; image->width = width; image->height = height; image->wrapClampMode = glWrapClampMode; GL_Bind( image ); if ( flags & IMG_LMATLAS ) { image->format = GL_RGBA8; qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL ); qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE ); qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE ); } else { Upload32( image, (unsigned int*)pic ); qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glWrapClampMode ); qglTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glWrapClampMode ); } // KHB there are times we have no interest in naming an image at all (notably, font glyphs) // but atm the rest of the system is too dependent on everything being named //if (name) { int hash = Q_FileHash(name, IMAGE_HASH_SIZE); image->next = hashTable[hash]; hashTable[hash] = image; //} return image; } /////////////////////////////////////////////////////////////// typedef struct { jmp_buf jumpBuffer; const char* fileName; qbool load; } engineJPEGInfo_t; // The only memory allocation function pointers we can override are the ones exposed in jpeg_memory_mgr. // The problem is that it's the wrong layer for us: we want to replace malloc and free, // not change how the pooling of allocations works. // We are therefore re-implementing jmemnobs.c to use the engine's allocator. extern "C" { #define JPEG_INTERNALS #include "../libjpeg-turbo/jinclude.h" #include "../libjpeg-turbo/jpeglib.h" #include "../libjpeg-turbo/jmemsys.h" void* jpeg_get_small( j_common_ptr cinfo, size_t sizeofobject ) { return (void*)ri.Malloc(sizeofobject); } void jpeg_free_small( j_common_ptr cinfo, void* object, size_t sizeofobject ) { ri.Free(object); } void* jpeg_get_large( j_common_ptr cinfo, size_t sizeofobject ) { return jpeg_get_small( cinfo, sizeofobject ); } void jpeg_free_large( j_common_ptr cinfo, void* object, size_t sizeofobject ) { jpeg_free_small( cinfo, object, sizeofobject ); } size_t jpeg_mem_available( j_common_ptr cinfo, size_t min_bytes_needed, size_t max_bytes_needed, size_t already_allocated ) { return max_bytes_needed; } void jpeg_open_backing_store( j_common_ptr cinfo, backing_store_ptr info, long total_bytes_needed ) { ERREXIT(cinfo, JERR_NO_BACKING_STORE); } long jpeg_mem_init( j_common_ptr cinfo) { return 0; } void jpeg_mem_term( j_common_ptr cinfo) {} void error_exit( j_common_ptr cinfo ) { char buffer[JMSG_LENGTH_MAX]; (*cinfo->err->format_message)(cinfo, buffer); engineJPEGInfo_t* const extra = (engineJPEGInfo_t*)cinfo->client_data; ri.Printf(PRINT_WARNING, "libjpeg-turbo: couldn't %s %s: %s\n", extra->load ? "load" : "save", extra->fileName, buffer); jpeg_destroy(cinfo); longjmp(extra->jumpBuffer, -1); } void output_message( j_common_ptr cinfo ) { char buffer[JMSG_LENGTH_MAX]; (*cinfo->err->format_message)(cinfo, buffer); const engineJPEGInfo_t* const extra = (const engineJPEGInfo_t*)cinfo->client_data; ri.Printf(PRINT_ALL, "libjpeg-turbo: while %s %s: %s\n", extra->load ? "loading" : "saving", extra->fileName, buffer); } }; static qbool LoadJPG( const char* fileName, byte* buffer, int len, byte** pic, int* w, int* h, GLenum* format ) { jpeg_decompress_struct cinfo; jpeg_error_mgr jerr; engineJPEGInfo_t extra; if (setjmp(extra.jumpBuffer)) return qfalse; extra.load = qtrue; extra.fileName = fileName; cinfo.err = jpeg_std_error( &jerr ); cinfo.err->error_exit = &error_exit; cinfo.err->output_message = &output_message; cinfo.client_data = &extra; jpeg_create_decompress( &cinfo ); jpeg_mem_src( &cinfo, buffer, len ); jpeg_read_header( &cinfo, TRUE ); jpeg_start_decompress( &cinfo ); const unsigned numBytes = cinfo.output_width * cinfo.output_height * 4; *pic = (byte*)ri.Malloc(numBytes); *w = cinfo.output_width; *h = cinfo.output_height; // We set JCS_EXT_RGBA to instruct libjpeg-turbo to always // write the alpha value as 255. cinfo.out_color_space = JCS_EXT_RGBA; cinfo.output_components = 4; // go for speed cinfo.dither_mode = JDITHER_NONE; cinfo.dct_method = JDCT_FASTEST; cinfo.do_fancy_upsampling = FALSE; const unsigned rowStride = cinfo.output_width * 4; JSAMPROW rowPointer = *pic; while (cinfo.output_scanline < cinfo.output_height) { jpeg_read_scanlines( &cinfo, &rowPointer, 1 ); rowPointer += rowStride; } jpeg_finish_decompress( &cinfo ); jpeg_destroy_decompress( &cinfo ); *format = GL_RGB; return qtrue; } int SaveJPGToBuffer( byte* out, int quality, int image_width, int image_height, byte* image_buffer ) { static const char* fileName = "memory buffer"; jpeg_compress_struct cinfo; jpeg_error_mgr jerr; engineJPEGInfo_t extra; if (setjmp(extra.jumpBuffer)) return qfalse; extra.load = qfalse; extra.fileName = fileName; cinfo.err = jpeg_std_error( &jerr ); cinfo.err->error_exit = &error_exit; cinfo.err->output_message = &output_message; cinfo.client_data = &extra; jpeg_create_compress( &cinfo ); // jpeg_mem_dest only calls malloc if both outSize and outBuffer are 0 unsigned long outSize = image_width * image_height * 4; unsigned char* outBuffer = out; jpeg_mem_dest( &cinfo, &outBuffer, &outSize ); cinfo.image_width = image_width; cinfo.image_height = image_height; cinfo.input_components = 4; cinfo.in_color_space = JCS_EXT_RGBA; jpeg_set_defaults( &cinfo ); jpeg_set_quality( &cinfo, quality, TRUE ); jpeg_start_compress( &cinfo, TRUE ); const unsigned rowStride = image_width * 4; JSAMPROW rowPointer = image_buffer + (cinfo.image_height - 1) * rowStride; while (cinfo.next_scanline < cinfo.image_height) { jpeg_write_scanlines( &cinfo, &rowPointer, 1 ); rowPointer -= rowStride; } jpeg_finish_compress( &cinfo ); const int csize = (int)(cinfo.dest->next_output_byte - outBuffer); jpeg_destroy_compress( &cinfo ); return csize; } /////////////////////////////////////////////////////////////// extern qbool LoadSTB( const char* fileName, byte* buffer, int len, byte** pic, int* w, int* h, GLenum* format ); typedef qbool (*imageLoaderFunc)( const char* fileName, byte* buffer, int len, byte** pic, int* w, int* h, GLenum* format ); typedef struct { const char* extension; imageLoaderFunc function; } imageLoader_t; static const imageLoader_t imageLoaders[] = { { ".jpg", &LoadJPG }, { ".tga", &LoadSTB }, { ".png", &LoadSTB }, { ".jpeg", &LoadJPG } }; static void R_LoadImage( const char* name, byte** pic, int* w, int* h, GLenum* format ) { *pic = NULL; *w = 0; *h = 0; const int loaderCount = ARRAY_LEN( imageLoaders ); char altName[MAX_QPATH]; byte* buffer; int bufferSize = ri.FS_ReadFile( name, (void**)&buffer ); if ( buffer == NULL ) { const char* lastDot = strrchr( name, '.' ); const int nameLength = lastDot != NULL ? (int)(lastDot - name) : (int)strlen( name ); if ( nameLength >= MAX_QPATH ) return; for ( int i = 0; i < loaderCount; ++i ) { memcpy( altName, name, nameLength ); altName[nameLength] = '\0'; Q_strcat( altName, sizeof(altName), imageLoaders[i].extension ); bufferSize = ri.FS_ReadFile( altName, (void**)&buffer ); if ( buffer != NULL ) { name = altName; break; } } if ( buffer == NULL ) return; } const int nameLength = (int)strlen( name ); for ( int i = 0; i < loaderCount; ++i ) { const int extLength = (int)strlen( imageLoaders[i].extension ); if ( extLength < nameLength && Q_stricmp(name + nameLength - extLength, imageLoaders[i].extension) == 0 ) { (*imageLoaders[i].function)( name, buffer, bufferSize, pic, w, h, format ); break; } } ri.FS_FreeFile( buffer ); } struct forcedLoadImage_t { const char* mapName; const char* shaderName; int shaderNameHash; }; // map-specific fixes for textures that are used with different (incompatible) settings static const forcedLoadImage_t g_forcedLoadImages[] = { { "ct3ctf1", "textures/ct3ctf1/grate_02.tga", 716 } }; // finds or loads the given image - returns NULL if it fails, not a default image const image_t* R_FindImageFile( const char* name, int flags, int glWrapClampMode ) { if ( !name ) return NULL; qbool forcedLoad = qfalse; const int hash = Q_FileHash( name, IMAGE_HASH_SIZE ); const int forcedLoadImageCount = ARRAY_LEN( g_forcedLoadImages ); for ( int i = 0; i < forcedLoadImageCount; ++i ) { const forcedLoadImage_t* const fli = g_forcedLoadImages + i; if ( hash == fli->shaderNameHash && strcmp( R_GetMapName(), fli->mapName ) == 0 && strcmp( name, fli->shaderName ) == 0 ) forcedLoad = qtrue; } // see if the image is already loaded // if ( !forcedLoad ) { image_t* image; for ( image = hashTable[hash]; image; image=image->next ) { if ( strcmp( name, image->name ) ) continue; if ( strcmp( name, "*white" ) ) return image; // since this WASN'T enforced as an error, half the shaders out there (including most of id's) // have been getting it wrong for years // the white image can be used with any set of parms, but other mismatches are errors if ( (image->flags & IMG_NOMIPMAP) != (flags & IMG_NOMIPMAP) ) { ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed nomipmap settings\n", name ); } if ( (image->flags & IMG_NOPICMIP) != (image->flags & IMG_NOPICMIP) ) { ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed nomipmaps settings\n", name ); } if ( image->wrapClampMode != glWrapClampMode ) { ri.Printf( PRINT_DEVELOPER, "WARNING: reused image %s with mixed clamp settings (map vs clampMap)\n", name ); } return image; } } // load the pic from disk // byte* pic; int width, height; GLenum format; R_LoadImage( name, &pic, &width, &height, &format ); if ( !pic ) return NULL; image_t* const image = R_CreateImage( name, pic, width, height, format, flags, glWrapClampMode ); ri.Free( pic ); return image; } void R_InitFogTable() { const float exp = 0.5; for (int i = 0; i < FOG_TABLE_SIZE; ++i) { tr.fogTable[i] = pow( (float)i/(FOG_TABLE_SIZE-1), exp ); } } /* Returns a 0.0 to 1.0 fog density value This is called for each texel of the fog texture on startup and for each vertex of transparent shaders in fog dynamically */ float R_FogFactor( float s, float t ) { s -= 1.0/512; if ( s < 0 ) { return 0; } if ( t < 1.0/32 ) { return 0; } if ( t < 31.0/32 ) { s *= (t - 1.0f/32.0f) / (30.0f/32.0f); } // we need to leave a lot of clamp range s *= 8; if ( s > 1.0 ) { s = 1.0; } return tr.fogTable[ (int)(s * (FOG_TABLE_SIZE-1)) ]; } static void R_CreateFogImage() { const int FOG_S = 256; const int FOG_T = 32; RI_AutoPtr ap( FOG_S * FOG_T * 4 ); byte* p = ap; // S is distance, T is depth for (int x = 0; x < FOG_S; ++x) { for (int y = 0; y < FOG_T; ++y) { float d = R_FogFactor( ( x + 0.5f ) / FOG_S, ( y + 0.5f ) / FOG_T ); p[(y*FOG_S+x)*4+0] = p[(y*FOG_S+x)*4+1] = p[(y*FOG_S+x)*4+2] = 255; p[(y*FOG_S+x)*4+3] = 255*d; } } tr.fogImage = R_CreateImage( "*fog", p, FOG_S, FOG_T, GL_RGBA, IMG_NOPICMIP, GL_CLAMP_TO_EDGE ); qglTexParameterfv( GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, colorWhite ); } static void R_CreateDefaultImage() { const int DEFAULT_SIZE = 16; byte data[DEFAULT_SIZE][DEFAULT_SIZE][4]; // the default image is a box showing increasing s and t Com_Memset( data, 32, sizeof( data ) ); for ( int i = 0; i < DEFAULT_SIZE; ++i ) { byte b = (byte)( 64 + (128 * i / DEFAULT_SIZE) ); data[0][i][0] = b; data[0][i][3] = 255; data[i][0][1] = b; data[i][0][3] = 255; data[i][i][0] = data[i][i][1] = b; data[i][i][3] = 255; } tr.defaultImage = R_CreateImage( "*default", (byte*)data, DEFAULT_SIZE, DEFAULT_SIZE, GL_RGBA, IMG_NOPICMIP, GL_REPEAT ); } static void R_CreateBuiltinImages() { int i; byte data[4]; R_CreateDefaultImage(); // we use a solid white image instead of disabling texturing Com_Memset( data, 255, 4 ); tr.whiteImage = R_CreateImage( "*white", data, 1, 1, GL_RGBA, IMG_NOMIPMAP, GL_REPEAT ); // scratchimages usually used for cinematic drawing (signal-quality effects) // these are just placeholders: RE_StretchRaw will regenerate them when it wants them for (i = 0; i < 16; ++i) // MAX_VIDEO_HANDLES tr.scratchImage[i] = R_CreateImage( "*scratch", data, 1, 1, GL_RGBA, IMG_NOMIPMAP | IMG_NOPICMIP, GL_CLAMP ); R_CreateFogImage(); } void R_SetColorMappings() { tr.identityLight = 1.0f / r_brightness->value; tr.identityLightByte = (int)( 255.0f * tr.identityLight ); for (int i = 0; i < 256; ++i) { s_intensitytable[i] = (byte)min( r_intensity->value * i, 255.0f ); } } void R_InitImages() { Com_Memset( hashTable, 0, sizeof(hashTable) ); R_SetColorMappings(); // build brightness translation tables R_CreateBuiltinImages(); // create default textures (white, fog, etc) } void R_DeleteTextures() { for ( int i = 0; i < tr.numImages; ++i ) qglDeleteTextures( 1, &tr.images[i]->texnum ); tr.numImages = 0; Com_Memset( tr.images, 0, sizeof( tr.images ) ); Com_Memset( glState.texID, 0, sizeof( glState.texID ) ); for ( int i = MAX_TMUS - 1; i >= 0; --i ) { GL_SelectTexture( i ); qglBindTexture( GL_TEXTURE_2D, 0 ); } } /* ============================================================================ SKINS ============================================================================ */ // unfortunatly, skin files aren't compatible with our normal parsing rules. oops :/ static const char* CommaParse( const char** data ) { static char com_token[MAX_TOKEN_CHARS]; int c = 0; const char* p = *data; while (*p && (*p < 32)) ++p; while ((*p > 32) && (*p != ',') && (c < MAX_TOKEN_CHARS-1)) com_token[c++] = *p++; *data = p; com_token[c] = 0; return com_token; } qhandle_t RE_RegisterSkin( const char* name ) { if (!name || !name[0] || (strlen(name) >= MAX_QPATH)) ri.Error( ERR_DROP, "RE_RegisterSkin: invalid name [%s]\n", name ? name : "NULL" ); skin_t* skin; qhandle_t hSkin; // see if the skin is already loaded for (hSkin = 1; hSkin < tr.numSkins; ++hSkin) { skin = tr.skins[hSkin]; if ( !Q_stricmp( skin->name, name ) ) { return (skin->numSurfaces ? hSkin : 0); } } // allocate a new skin if ( tr.numSkins == MAX_SKINS ) { ri.Printf( PRINT_WARNING, "WARNING: RE_RegisterSkin( '%s' ) MAX_SKINS hit\n", name ); return 0; } tr.numSkins++; skin = RI_New(); tr.skins[hSkin] = skin; Q_strncpyz( skin->name, name, sizeof( skin->name ) ); skin->numSurfaces = 0; // make sure the render thread is stopped // KHB why? we're not uploading anything... R_SyncRenderThread(); // if not a .skin file, load as a single shader if ( Q_stricmpn( name + strlen( name ) - 5, ".skin", 6 ) ) { skin->numSurfaces = 1; skin->surfaces[0] = RI_New(); skin->surfaces[0]->shader = R_FindShader( name, LIGHTMAP_NONE, qtrue ); return hSkin; } char* text; // load and parse the skin file ri.FS_ReadFile( name, (void **)&text ); if (!text) return 0; const char* token; const char* p = text; char surfName[MAX_QPATH]; while (p && *p) { // get surface name token = CommaParse( &p ); Q_strncpyz( surfName, token, sizeof( surfName ) ); if ( !token[0] ) break; // lowercase the surface name so skin compares are faster Q_strlwr( surfName ); if (*p == ',') ++p; if ( strstr( token, "tag_" ) ) continue; // parse the shader name token = CommaParse( &p ); skinSurface_t* surf = skin->surfaces[ skin->numSurfaces ] = RI_New(); Q_strncpyz( surf->name, surfName, sizeof( surf->name ) ); surf->shader = R_FindShader( token, LIGHTMAP_NONE, qtrue ); skin->numSurfaces++; } ri.FS_FreeFile( text ); return (skin->numSurfaces ? hSkin : 0); // never let a skin have 0 shaders } void R_InitSkins() { tr.numSkins = 1; // make the default skin have all default shaders tr.skins[0] = RI_New(); tr.skins[0]->numSurfaces = 1; tr.skins[0]->surfaces[0] = RI_New(); tr.skins[0]->surfaces[0]->shader = tr.defaultShader; Q_strncpyz( tr.skins[0]->name, "", sizeof( tr.skins[0]->name ) ); } const skin_t* R_GetSkinByHandle( qhandle_t hSkin ) { return ((hSkin > 0) && (hSkin < tr.numSkins) ? tr.skins[hSkin] : tr.skins[0]); } void R_SkinList_f( void ) { ri.Printf( PRINT_ALL, "------------------\n" ); for (int i = 0; i < tr.numSkins; ++i) { const skin_t* skin = tr.skins[i]; ri.Printf( PRINT_ALL, "%3i:%s\n", i, skin->name ); for (int j = 0; j < skin->numSurfaces; ++j) { ri.Printf( PRINT_ALL, " %s = %s\n", skin->surfaces[j]->name, skin->surfaces[j]->shader->name ); } } ri.Printf( PRINT_ALL, "------------------\n" ); }