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Diffstat (limited to 'src/renderergl2/tr_shader.cpp')
| -rw-r--r-- | src/renderergl2/tr_shader.cpp | 3891 |
1 files changed, 3891 insertions, 0 deletions
diff --git a/src/renderergl2/tr_shader.cpp b/src/renderergl2/tr_shader.cpp new file mode 100644 index 0000000..b3ebacf --- /dev/null +++ b/src/renderergl2/tr_shader.cpp @@ -0,0 +1,3891 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2013 Darklegion Development +Copyright (C) 2015-2019 GrangerHub + +This file is part of Tremulous. + +Tremulous 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 3 of the License, +or (at your option) any later version. + +Tremulous 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 Tremulous; if not, see <https://www.gnu.org/licenses/> + +=========================================================================== +*/ +#include "tr_local.h" + +// tr_shader.c -- this file deals with the parsing and definition of shaders + +static char *s_shaderText; + +// the shader is parsed into these global variables, then copied into +// dynamically allocated memory if it is valid. +static shaderStage_t stages[MAX_SHADER_STAGES]; +static shader_t shader; +static texModInfo_t texMods[MAX_SHADER_STAGES][TR_MAX_TEXMODS]; + +#define FILE_HASH_SIZE 1024 +static shader_t* hashTable[FILE_HASH_SIZE]; + +#define MAX_SHADERTEXT_HASH 2048 +static char **shaderTextHashTable[MAX_SHADERTEXT_HASH]; + +/* +================ +return a hash value for the filename +================ +*/ +#ifdef __GNUCC__ + #warning TODO: check if long is ok here +#endif +static long generateHashValue( const char *fname, const int size ) { + int i; + long hash; + char letter; + + hash = 0; + i = 0; + while (fname[i] != '\0') { + letter = tolower(fname[i]); + if (letter =='.') break; // don't include extension + if (letter =='\\') letter = '/'; // damn path names + if (letter == PATH_SEP) letter = '/'; // damn path names + hash+=(long)(letter)*(i+119); + i++; + } + hash = (hash ^ (hash >> 10) ^ (hash >> 20)); + hash &= (size-1); + return hash; +} + +void R_RemapShader(const char *shaderName, const char *newShaderName, const char *timeOffset) { + char strippedName[MAX_QPATH]; + int hash; + shader_t *sh, *sh2; + qhandle_t h; + + sh = R_FindShaderByName( shaderName ); + if (sh == NULL || sh == tr.defaultShader) { + h = RE_RegisterShaderLightMap(shaderName, 0); + sh = R_GetShaderByHandle(h); + } + if (sh == NULL || sh == tr.defaultShader) { + ri.Printf( PRINT_WARNING, "WARNING: R_RemapShader: shader %s not found\n", shaderName ); + return; + } + + sh2 = R_FindShaderByName( newShaderName ); + if (sh2 == NULL || sh2 == tr.defaultShader) { + h = RE_RegisterShaderLightMap(newShaderName, 0); + sh2 = R_GetShaderByHandle(h); + } + + if (sh2 == NULL || sh2 == tr.defaultShader) { + ri.Printf( PRINT_WARNING, "WARNING: R_RemapShader: new shader %s not found\n", newShaderName ); + return; + } + + // remap all the shaders with the given name + // even tho they might have different lightmaps + COM_StripExtension(shaderName, strippedName, sizeof(strippedName)); + hash = generateHashValue(strippedName, FILE_HASH_SIZE); + for (sh = hashTable[hash]; sh; sh = sh->next) { + if (Q_stricmp(sh->name, strippedName) == 0) { + if (sh != sh2) { + sh->remappedShader = sh2; + } else { + sh->remappedShader = NULL; + } + } + } + if (timeOffset) { + sh2->timeOffset = atof(timeOffset); + } +} + +/* +=============== +ParseVector +=============== +*/ +static bool ParseVector( char **text, int count, float *v ) { + char *token; + int i; + + // FIXME: spaces are currently required after parens, should change parseext... + token = COM_ParseExt( text, qfalse ); + if ( strcmp( token, "(" ) ) { + ri.Printf( PRINT_WARNING, "WARNING: missing parenthesis in shader '%s'\n", shader.name ); + return false; + } + + for ( i = 0 ; i < count ; i++ ) { + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) { + ri.Printf( PRINT_WARNING, "WARNING: missing vector element in shader '%s'\n", shader.name ); + return false; + } + v[i] = atof( token ); + } + + token = COM_ParseExt( text, qfalse ); + if ( strcmp( token, ")" ) ) { + ri.Printf( PRINT_WARNING, "WARNING: missing parenthesis in shader '%s'\n", shader.name ); + return false; + } + + return true; +} + + +/* +=============== +NameToAFunc +=============== +*/ +static unsigned NameToAFunc( const char *funcname ) +{ + if ( !Q_stricmp( funcname, "GT0" ) ) + { + return GLS_ATEST_GT_0; + } + else if ( !Q_stricmp( funcname, "LT128" ) ) + { + return GLS_ATEST_LT_80; + } + else if ( !Q_stricmp( funcname, "GE128" ) ) + { + return GLS_ATEST_GE_80; + } + + ri.Printf( PRINT_WARNING, "WARNING: invalid alphaFunc name '%s' in shader '%s'\n", funcname, shader.name ); + return 0; +} + + +/* +=============== +NameToSrcBlendMode +=============== +*/ +static int NameToSrcBlendMode( const char *name ) +{ + if ( !Q_stricmp( name, "GL_ONE" ) ) + { + return GLS_SRCBLEND_ONE; + } + else if ( !Q_stricmp( name, "GL_ZERO" ) ) + { + return GLS_SRCBLEND_ZERO; + } + else if ( !Q_stricmp( name, "GL_DST_COLOR" ) ) + { + return GLS_SRCBLEND_DST_COLOR; + } + else if ( !Q_stricmp( name, "GL_ONE_MINUS_DST_COLOR" ) ) + { + return GLS_SRCBLEND_ONE_MINUS_DST_COLOR; + } + else if ( !Q_stricmp( name, "GL_SRC_ALPHA" ) ) + { + return GLS_SRCBLEND_SRC_ALPHA; + } + else if ( !Q_stricmp( name, "GL_ONE_MINUS_SRC_ALPHA" ) ) + { + return GLS_SRCBLEND_ONE_MINUS_SRC_ALPHA; + } + else if ( !Q_stricmp( name, "GL_DST_ALPHA" ) ) + { + if (r_ignoreDstAlpha->integer) + return GLS_SRCBLEND_ONE; + + return GLS_SRCBLEND_DST_ALPHA; + } + else if ( !Q_stricmp( name, "GL_ONE_MINUS_DST_ALPHA" ) ) + { + if (r_ignoreDstAlpha->integer) + return GLS_SRCBLEND_ZERO; + + return GLS_SRCBLEND_ONE_MINUS_DST_ALPHA; + } + else if ( !Q_stricmp( name, "GL_SRC_ALPHA_SATURATE" ) ) + { + return GLS_SRCBLEND_ALPHA_SATURATE; + } + + ri.Printf( PRINT_WARNING, "WARNING: unknown blend mode '%s' in shader '%s', substituting GL_ONE\n", name, shader.name ); + return GLS_SRCBLEND_ONE; +} + +/* +=============== +NameToDstBlendMode +=============== +*/ +static int NameToDstBlendMode( const char *name ) +{ + if ( !Q_stricmp( name, "GL_ONE" ) ) + { + return GLS_DSTBLEND_ONE; + } + else if ( !Q_stricmp( name, "GL_ZERO" ) ) + { + return GLS_DSTBLEND_ZERO; + } + else if ( !Q_stricmp( name, "GL_SRC_ALPHA" ) ) + { + return GLS_DSTBLEND_SRC_ALPHA; + } + else if ( !Q_stricmp( name, "GL_ONE_MINUS_SRC_ALPHA" ) ) + { + return GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA; + } + else if ( !Q_stricmp( name, "GL_DST_ALPHA" ) ) + { + if (r_ignoreDstAlpha->integer) + return GLS_DSTBLEND_ONE; + + return GLS_DSTBLEND_DST_ALPHA; + } + else if ( !Q_stricmp( name, "GL_ONE_MINUS_DST_ALPHA" ) ) + { + if (r_ignoreDstAlpha->integer) + return GLS_DSTBLEND_ZERO; + + return GLS_DSTBLEND_ONE_MINUS_DST_ALPHA; + } + else if ( !Q_stricmp( name, "GL_SRC_COLOR" ) ) + { + return GLS_DSTBLEND_SRC_COLOR; + } + else if ( !Q_stricmp( name, "GL_ONE_MINUS_SRC_COLOR" ) ) + { + return GLS_DSTBLEND_ONE_MINUS_SRC_COLOR; + } + + ri.Printf( PRINT_WARNING, "WARNING: unknown blend mode '%s' in shader '%s', substituting GL_ONE\n", name, shader.name ); + return GLS_DSTBLEND_ONE; +} + +/* +=============== +NameToGenFunc +=============== +*/ +static genFunc_t NameToGenFunc( const char *funcname ) +{ + if ( !Q_stricmp( funcname, "sin" ) ) + { + return GF_SIN; + } + else if ( !Q_stricmp( funcname, "square" ) ) + { + return GF_SQUARE; + } + else if ( !Q_stricmp( funcname, "triangle" ) ) + { + return GF_TRIANGLE; + } + else if ( !Q_stricmp( funcname, "sawtooth" ) ) + { + return GF_SAWTOOTH; + } + else if ( !Q_stricmp( funcname, "inversesawtooth" ) ) + { + return GF_INVERSE_SAWTOOTH; + } + else if ( !Q_stricmp( funcname, "noise" ) ) + { + return GF_NOISE; + } + + ri.Printf( PRINT_WARNING, "WARNING: invalid genfunc name '%s' in shader '%s'\n", funcname, shader.name ); + return GF_SIN; +} + + +/* +=================== +ParseWaveForm +=================== +*/ +static void ParseWaveForm( char **text, waveForm_t *wave ) +{ + char *token; + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing waveform parm in shader '%s'\n", shader.name ); + return; + } + wave->func = NameToGenFunc( token ); + + // BASE, AMP, PHASE, FREQ + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing waveform parm in shader '%s'\n", shader.name ); + return; + } + wave->base = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing waveform parm in shader '%s'\n", shader.name ); + return; + } + wave->amplitude = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing waveform parm in shader '%s'\n", shader.name ); + return; + } + wave->phase = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing waveform parm in shader '%s'\n", shader.name ); + return; + } + wave->frequency = atof( token ); +} + + +/* +=================== +ParseTexMod +=================== +*/ +static void ParseTexMod( char *_text, shaderStage_t *stage ) +{ + const char *token; + char **text = &_text; + texModInfo_t *tmi; + + if ( stage->bundle[0].numTexMods == TR_MAX_TEXMODS ) { + ri.Error( ERR_DROP, "ERROR: too many tcMod stages in shader '%s'", shader.name ); + return; + } + + tmi = &stage->bundle[0].texMods[stage->bundle[0].numTexMods]; + stage->bundle[0].numTexMods++; + + token = COM_ParseExt( text, qfalse ); + + // + // turb + // + if ( !Q_stricmp( token, "turb" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing tcMod turb parms in shader '%s'\n", shader.name ); + return; + } + tmi->wave.base = atof( token ); + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing tcMod turb in shader '%s'\n", shader.name ); + return; + } + tmi->wave.amplitude = atof( token ); + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing tcMod turb in shader '%s'\n", shader.name ); + return; + } + tmi->wave.phase = atof( token ); + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing tcMod turb in shader '%s'\n", shader.name ); + return; + } + tmi->wave.frequency = atof( token ); + + tmi->type = TMOD_TURBULENT; + } + // + // scale + // + else if ( !Q_stricmp( token, "scale" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing scale parms in shader '%s'\n", shader.name ); + return; + } + tmi->scale[0] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing scale parms in shader '%s'\n", shader.name ); + return; + } + tmi->scale[1] = atof( token ); + tmi->type = TMOD_SCALE; + } + // + // scroll + // + else if ( !Q_stricmp( token, "scroll" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing scale scroll parms in shader '%s'\n", shader.name ); + return; + } + tmi->scroll[0] = atof( token ); + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing scale scroll parms in shader '%s'\n", shader.name ); + return; + } + tmi->scroll[1] = atof( token ); + tmi->type = TMOD_SCROLL; + } + // + // stretch + // + else if ( !Q_stricmp( token, "stretch" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing stretch parms in shader '%s'\n", shader.name ); + return; + } + tmi->wave.func = NameToGenFunc( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing stretch parms in shader '%s'\n", shader.name ); + return; + } + tmi->wave.base = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing stretch parms in shader '%s'\n", shader.name ); + return; + } + tmi->wave.amplitude = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing stretch parms in shader '%s'\n", shader.name ); + return; + } + tmi->wave.phase = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing stretch parms in shader '%s'\n", shader.name ); + return; + } + tmi->wave.frequency = atof( token ); + + tmi->type = TMOD_STRETCH; + } + // + // transform + // + else if ( !Q_stricmp( token, "transform" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing transform parms in shader '%s'\n", shader.name ); + return; + } + tmi->matrix[0][0] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing transform parms in shader '%s'\n", shader.name ); + return; + } + tmi->matrix[0][1] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing transform parms in shader '%s'\n", shader.name ); + return; + } + tmi->matrix[1][0] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing transform parms in shader '%s'\n", shader.name ); + return; + } + tmi->matrix[1][1] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing transform parms in shader '%s'\n", shader.name ); + return; + } + tmi->translate[0] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing transform parms in shader '%s'\n", shader.name ); + return; + } + tmi->translate[1] = atof( token ); + + tmi->type = TMOD_TRANSFORM; + } + // + // rotate + // + else if ( !Q_stricmp( token, "rotate" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing tcMod rotate parms in shader '%s'\n", shader.name ); + return; + } + tmi->rotateSpeed = atof( token ); + tmi->type = TMOD_ROTATE; + } + // + // entityTranslate + // + else if ( !Q_stricmp( token, "entityTranslate" ) ) + { + tmi->type = TMOD_ENTITY_TRANSLATE; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown tcMod '%s' in shader '%s'\n", token, shader.name ); + } +} + + +/* +=================== +ParseStage +=================== +*/ +static bool ParseStage( shaderStage_t *stage, char **text ) +{ + char *token; + int depthMaskBits = GLS_DEPTHMASK_TRUE, blendSrcBits = 0, blendDstBits = 0, atestBits = 0, depthFuncBits = 0; + bool depthMaskExplicit = false; + + stage->active = true; + + while ( 1 ) + { + token = COM_ParseExt( text, qtrue ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: no matching '}' found\n" ); + return false; + } + + if ( token[0] == '}' ) + { + break; + } + // + // map <name> + // + else if ( !Q_stricmp( token, "map" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for 'map' keyword in shader '%s'\n", shader.name ); + return false; + } + + if ( !Q_stricmp( token, "$whiteimage" ) ) + { + stage->bundle[0].image[0] = tr.whiteImage; + continue; + } + else if ( !Q_stricmp( token, "$lightmap" ) ) + { + stage->bundle[0].isLightmap = true; + if ( shader.lightmapIndex < 0 || !tr.lightmaps ) { + stage->bundle[0].image[0] = tr.whiteImage; + } else { + stage->bundle[0].image[0] = tr.lightmaps[shader.lightmapIndex]; + } + continue; + } + else if ( !Q_stricmp( token, "$deluxemap" ) ) + { + if (!tr.worldDeluxeMapping) + { + ri.Printf( PRINT_WARNING, "WARNING: shader '%s' wants a deluxe map in a map compiled without them\n", shader.name ); + return false; + } + + stage->bundle[0].isLightmap = true; + if ( shader.lightmapIndex < 0 ) { + stage->bundle[0].image[0] = tr.whiteImage; + } else { + stage->bundle[0].image[0] = tr.deluxemaps[shader.lightmapIndex]; + } + continue; + } + else + { + imgType_t type = IMGTYPE_COLORALPHA; + int/*imgFlags_t*/ flags = IMGFLAG_NONE; + + if (!shader.noMipMaps) + flags |= IMGFLAG_MIPMAP; + + if (!shader.noPicMip) + flags |= IMGFLAG_PICMIP; + + if (stage->type == ST_NORMALMAP || stage->type == ST_NORMALPARALLAXMAP) + { + type = IMGTYPE_NORMAL; + flags |= IMGFLAG_NOLIGHTSCALE; + + if (stage->type == ST_NORMALPARALLAXMAP) + type = IMGTYPE_NORMALHEIGHT; + } + else + { + if (r_genNormalMaps->integer) + flags |= IMGFLAG_GENNORMALMAP; + } + + stage->bundle[0].image[0] = R_FindImageFile( token, type, flags ); + + if ( !stage->bundle[0].image[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: R_FindImageFile could not find '%s' in shader '%s'\n", token, shader.name ); + return false; + } + } + } + // + // clampmap <name> + // + else if ( !Q_stricmp( token, "clampmap" ) ) + { + imgType_t type = IMGTYPE_COLORALPHA; + int/*imgFlags_t*/ flags = IMGFLAG_CLAMPTOEDGE; + + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for 'clampmap' keyword in shader '%s'\n", shader.name ); + return false; + } + + if (!shader.noMipMaps) + flags |= IMGFLAG_MIPMAP; + + if (!shader.noPicMip) + flags |= IMGFLAG_PICMIP; + + if (stage->type == ST_NORMALMAP || stage->type == ST_NORMALPARALLAXMAP) + { + type = IMGTYPE_NORMAL; + flags |= IMGFLAG_NOLIGHTSCALE; + + if (stage->type == ST_NORMALPARALLAXMAP) + type = IMGTYPE_NORMALHEIGHT; + } + else + { + if (r_genNormalMaps->integer) + flags |= IMGFLAG_GENNORMALMAP; + } + + + stage->bundle[0].image[0] = R_FindImageFile( token, type, flags ); + if ( !stage->bundle[0].image[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: R_FindImageFile could not find '%s' in shader '%s'\n", token, shader.name ); + return false; + } + } + // + // animMap <frequency> <image1> .... <imageN> + // + else if ( !Q_stricmp( token, "animMap" ) ) + { + int totalImages = 0; + + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for 'animMap' keyword in shader '%s'\n", shader.name ); + return false; + } + stage->bundle[0].imageAnimationSpeed = atof( token ); + + // parse up to MAX_IMAGE_ANIMATIONS animations + while ( 1 ) { + int num; + + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) { + break; + } + num = stage->bundle[0].numImageAnimations; + if ( num < MAX_IMAGE_ANIMATIONS ) { + int/*imgFlags_t*/ flags = IMGFLAG_NONE; + + if (!shader.noMipMaps) + flags |= IMGFLAG_MIPMAP; + + if (!shader.noPicMip) + flags |= IMGFLAG_PICMIP; + + stage->bundle[0].image[num] = R_FindImageFile( token, IMGTYPE_COLORALPHA, flags ); + if ( !stage->bundle[0].image[num] ) + { + ri.Printf( PRINT_WARNING, "WARNING: R_FindImageFile could not find '%s' in shader '%s'\n", token, shader.name ); + return false; + } + stage->bundle[0].numImageAnimations++; + } + totalImages++; + } + + if ( totalImages > MAX_IMAGE_ANIMATIONS ) + { + ri.Printf( PRINT_WARNING, "WARNING: ignoring excess images for 'animMap' (found %d, max is %d) in shader '%s'\n", + totalImages, MAX_IMAGE_ANIMATIONS, shader.name ); + } + } + else if ( !Q_stricmp( token, "videoMap" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for 'videoMap' keyword in shader '%s'\n", shader.name ); + return false; + } + stage->bundle[0].videoMapHandle = ri.CIN_PlayCinematic( token, 0, 0, 256, 256, (CIN_loop | CIN_silent | CIN_shader)); + if (stage->bundle[0].videoMapHandle != -1) { + stage->bundle[0].isVideoMap = true; + stage->bundle[0].image[0] = tr.scratchImage[stage->bundle[0].videoMapHandle]; + } else { + ri.Printf( PRINT_WARNING, "WARNING: could not load '%s' for 'videoMap' keyword in shader '%s'\n", token, shader.name ); + } + } + // + // alphafunc <func> + // + else if ( !Q_stricmp( token, "alphaFunc" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for 'alphaFunc' keyword in shader '%s'\n", shader.name ); + return false; + } + + atestBits = NameToAFunc( token ); + } + // + // depthFunc <func> + // + else if ( !Q_stricmp( token, "depthfunc" ) ) + { + token = COM_ParseExt( text, qfalse ); + + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for 'depthfunc' keyword in shader '%s'\n", shader.name ); + return false; + } + + if ( !Q_stricmp( token, "lequal" ) ) + { + depthFuncBits = 0; + } + else if ( !Q_stricmp( token, "equal" ) ) + { + depthFuncBits = GLS_DEPTHFUNC_EQUAL; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown depthfunc '%s' in shader '%s'\n", token, shader.name ); + continue; + } + } + // + // detail + // + else if ( !Q_stricmp( token, "detail" ) ) + { + stage->isDetail = true; + } + // + // blendfunc <srcFactor> <dstFactor> + // or blendfunc <add|filter|blend> + // + else if ( !Q_stricmp( token, "blendfunc" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parm for blendFunc in shader '%s'\n", shader.name ); + continue; + } + // check for "simple" blends first + if ( !Q_stricmp( token, "add" ) ) { + blendSrcBits = GLS_SRCBLEND_ONE; + blendDstBits = GLS_DSTBLEND_ONE; + } else if ( !Q_stricmp( token, "filter" ) ) { + blendSrcBits = GLS_SRCBLEND_DST_COLOR; + blendDstBits = GLS_DSTBLEND_ZERO; + } else if ( !Q_stricmp( token, "blend" ) ) { + blendSrcBits = GLS_SRCBLEND_SRC_ALPHA; + blendDstBits = GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA; + } else { + // complex double blends + blendSrcBits = NameToSrcBlendMode( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parm for blendFunc in shader '%s'\n", shader.name ); + continue; + } + blendDstBits = NameToDstBlendMode( token ); + } + + // clear depth mask for blended surfaces + if ( !depthMaskExplicit ) + { + depthMaskBits = 0; + } + } + // + // stage <type> + // + else if(!Q_stricmp(token, "stage")) + { + token = COM_ParseExt(text, qfalse); + if(token[0] == 0) + { + ri.Printf(PRINT_WARNING, "WARNING: missing parameters for stage in shader '%s'\n", shader.name); + continue; + } + + if(!Q_stricmp(token, "diffuseMap")) + { + stage->type = ST_DIFFUSEMAP; + } + else if(!Q_stricmp(token, "normalMap") || !Q_stricmp(token, "bumpMap")) + { + stage->type = ST_NORMALMAP; + VectorSet4(stage->normalScale, r_baseNormalX->value, r_baseNormalY->value, 1.0f, r_baseParallax->value); + } + else if(!Q_stricmp(token, "normalParallaxMap") || !Q_stricmp(token, "bumpParallaxMap")) + { + if (r_parallaxMapping->integer) + stage->type = ST_NORMALPARALLAXMAP; + else + stage->type = ST_NORMALMAP; + VectorSet4(stage->normalScale, r_baseNormalX->value, r_baseNormalY->value, 1.0f, r_baseParallax->value); + } + else if(!Q_stricmp(token, "specularMap")) + { + stage->type = ST_SPECULARMAP; + VectorSet4(stage->specularScale, 1.0f, 1.0f, 1.0f, 1.0f); + } + else + { + ri.Printf(PRINT_WARNING, "WARNING: unknown stage parameter '%s' in shader '%s'\n", token, shader.name); + continue; + } + } + // + // specularReflectance <value> + // + else if (!Q_stricmp(token, "specularreflectance")) + { + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for specular reflectance in shader '%s'\n", shader.name ); + continue; + } + + if (r_pbr->integer) + { + // interpret specularReflectance < 0.5 as nonmetal + stage->specularScale[1] = (atof(token) < 0.5f) ? 0.0f : 1.0f; + } + else + { + stage->specularScale[0] = + stage->specularScale[1] = + stage->specularScale[2] = atof( token ); + } + } + // + // specularExponent <value> + // + else if (!Q_stricmp(token, "specularexponent")) + { + float exponent; + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for specular exponent in shader '%s'\n", shader.name ); + continue; + } + + exponent = atof( token ); + + if (r_pbr->integer) + stage->specularScale[0] = 1.0f - powf(2.0f / (exponent + 2.0), 0.25); + else + { + // Change shininess to gloss + // Assumes max exponent of 8190 and min of 0, must change here if altered in lightall_fp.glsl + exponent = CLAMP(exponent, 0.0f, 8190.0f); + stage->specularScale[3] = (log2f(exponent + 2.0f) - 1.0f) / 12.0f; + } + } + // + // gloss <value> + // + else if (!Q_stricmp(token, "gloss")) + { + float gloss; + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for gloss in shader '%s'\n", shader.name ); + continue; + } + + gloss = atof(token); + + if (r_pbr->integer) + stage->specularScale[0] = 1.0f - exp2f(-3.0f * gloss); + else + stage->specularScale[3] = gloss; + } + // + // roughness <value> + // + else if (!Q_stricmp(token, "roughness")) + { + float roughness; + + token = COM_ParseExt(text, qfalse); + if (token[0] == 0) + { + ri.Printf(PRINT_WARNING, "WARNING: missing parameter for roughness in shader '%s'\n", shader.name); + continue; + } + + roughness = atof(token); + + if (r_pbr->integer) + stage->specularScale[0] = 1.0 - roughness; + else + { + if (roughness >= 0.125) + stage->specularScale[3] = log2f(1.0f / roughness) / 3.0f; + else + stage->specularScale[3] = 1.0f; + } + } + // + // parallaxDepth <value> + // + else if (!Q_stricmp(token, "parallaxdepth")) + { + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for parallaxDepth in shader '%s'\n", shader.name ); + continue; + } + + stage->normalScale[3] = atof( token ); + } + // + // normalScale <xy> + // or normalScale <x> <y> + // or normalScale <x> <y> <height> + // + else if (!Q_stricmp(token, "normalscale")) + { + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for normalScale in shader '%s'\n", shader.name ); + continue; + } + + stage->normalScale[0] = atof( token ); + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + // one value, applies to X/Y + stage->normalScale[1] = stage->normalScale[0]; + continue; + } + + stage->normalScale[1] = atof( token ); + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + // two values, no height + continue; + } + + stage->normalScale[3] = atof( token ); + } + // + // specularScale <rgb> <gloss> + // or specularScale <metallic> <smoothness> with r_pbr 1 + // or specularScale <r> <g> <b> + // or specularScale <r> <g> <b> <gloss> + // + else if (!Q_stricmp(token, "specularscale")) + { + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for specularScale in shader '%s'\n", shader.name ); + continue; + } + + stage->specularScale[0] = atof( token ); + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameter for specularScale in shader '%s'\n", shader.name ); + continue; + } + + stage->specularScale[1] = atof( token ); + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + if (r_pbr->integer) + { + // two values, metallic then smoothness + float smoothness = stage->specularScale[1]; + stage->specularScale[1] = (stage->specularScale[0] < 0.5f) ? 0.0f : 1.0f; + stage->specularScale[0] = smoothness; + } + { + // two values, rgb then gloss + stage->specularScale[3] = stage->specularScale[1]; + stage->specularScale[1] = + stage->specularScale[2] = stage->specularScale[0]; + } + continue; + } + + stage->specularScale[2] = atof( token ); + + token = COM_ParseExt(text, qfalse); + if ( token[0] == 0 ) + { + // three values, rgb + continue; + } + + stage->specularScale[2] = atof( token ); + + } + // + // rgbGen + // + else if ( !Q_stricmp( token, "rgbGen" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameters for rgbGen in shader '%s'\n", shader.name ); + continue; + } + + if ( !Q_stricmp( token, "wave" ) ) + { + ParseWaveForm( text, &stage->rgbWave ); + stage->rgbGen = CGEN_WAVEFORM; + } + else if ( !Q_stricmp( token, "const" ) ) + { + vec3_t color; + + VectorClear( color ); + + ParseVector( text, 3, color ); + stage->constantColor[0] = 255 * color[0]; + stage->constantColor[1] = 255 * color[1]; + stage->constantColor[2] = 255 * color[2]; + + stage->rgbGen = CGEN_CONST; + } + else if ( !Q_stricmp( token, "identity" ) ) + { + stage->rgbGen = CGEN_IDENTITY; + } + else if ( !Q_stricmp( token, "identityLighting" ) ) + { + stage->rgbGen = CGEN_IDENTITY_LIGHTING; + } + else if ( !Q_stricmp( token, "entity" ) ) + { + stage->rgbGen = CGEN_ENTITY; + } + else if ( !Q_stricmp( token, "oneMinusEntity" ) ) + { + stage->rgbGen = CGEN_ONE_MINUS_ENTITY; + } + else if ( !Q_stricmp( token, "vertex" ) ) + { + stage->rgbGen = CGEN_VERTEX; + if ( stage->alphaGen == 0 ) { + stage->alphaGen = AGEN_VERTEX; + } + } + else if ( !Q_stricmp( token, "exactVertex" ) ) + { + stage->rgbGen = CGEN_EXACT_VERTEX; + } + else if ( !Q_stricmp( token, "vertexLit" ) ) + { + stage->rgbGen = CGEN_VERTEX_LIT; + if ( stage->alphaGen == 0 ) { + stage->alphaGen = AGEN_VERTEX; + } + } + else if ( !Q_stricmp( token, "exactVertexLit" ) ) + { + stage->rgbGen = CGEN_EXACT_VERTEX_LIT; + } + else if ( !Q_stricmp( token, "lightingDiffuse" ) ) + { + stage->rgbGen = CGEN_LIGHTING_DIFFUSE; + } + else if ( !Q_stricmp( token, "oneMinusVertex" ) ) + { + stage->rgbGen = CGEN_ONE_MINUS_VERTEX; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown rgbGen parameter '%s' in shader '%s'\n", token, shader.name ); + continue; + } + } + // + // alphaGen + // + else if ( !Q_stricmp( token, "alphaGen" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parameters for alphaGen in shader '%s'\n", shader.name ); + continue; + } + + if ( !Q_stricmp( token, "wave" ) ) + { + ParseWaveForm( text, &stage->alphaWave ); + stage->alphaGen = AGEN_WAVEFORM; + } + else if ( !Q_stricmp( token, "const" ) ) + { + token = COM_ParseExt( text, qfalse ); + stage->constantColor[3] = 255 * atof( token ); + stage->alphaGen = AGEN_CONST; + } + else if ( !Q_stricmp( token, "identity" ) ) + { + stage->alphaGen = AGEN_IDENTITY; + } + else if ( !Q_stricmp( token, "entity" ) ) + { + stage->alphaGen = AGEN_ENTITY; + } + else if ( !Q_stricmp( token, "oneMinusEntity" ) ) + { + stage->alphaGen = AGEN_ONE_MINUS_ENTITY; + } + else if ( !Q_stricmp( token, "vertex" ) ) + { + stage->alphaGen = AGEN_VERTEX; + } + else if ( !Q_stricmp( token, "lightingSpecular" ) ) + { + stage->alphaGen = AGEN_LIGHTING_SPECULAR; + } + else if ( !Q_stricmp( token, "oneMinusVertex" ) ) + { + stage->alphaGen = AGEN_ONE_MINUS_VERTEX; + } + else if ( !Q_stricmp( token, "portal" ) ) + { + stage->alphaGen = AGEN_PORTAL; + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + shader.portalRange = 256; + ri.Printf( PRINT_WARNING, "WARNING: missing range parameter for alphaGen portal in shader '%s', defaulting to 256\n", shader.name ); + } + else + { + shader.portalRange = atof( token ); + } + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown alphaGen parameter '%s' in shader '%s'\n", token, shader.name ); + continue; + } + } + // + // tcGen <function> + // + else if ( !Q_stricmp(token, "texgen") || !Q_stricmp( token, "tcGen" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing texgen parm in shader '%s'\n", shader.name ); + continue; + } + + if ( !Q_stricmp( token, "environment" ) ) + { + stage->bundle[0].tcGen = TCGEN_ENVIRONMENT_MAPPED; + } + else if ( !Q_stricmp( token, "lightmap" ) ) + { + stage->bundle[0].tcGen = TCGEN_LIGHTMAP; + } + else if ( !Q_stricmp( token, "texture" ) || !Q_stricmp( token, "base" ) ) + { + stage->bundle[0].tcGen = TCGEN_TEXTURE; + } + else if ( !Q_stricmp( token, "vector" ) ) + { + ParseVector( text, 3, stage->bundle[0].tcGenVectors[0] ); + ParseVector( text, 3, stage->bundle[0].tcGenVectors[1] ); + + stage->bundle[0].tcGen = TCGEN_VECTOR; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown texgen parm in shader '%s'\n", shader.name ); + } + } + // + // tcMod <type> <...> + // + else if ( !Q_stricmp( token, "tcMod" ) ) + { + char buffer[1024] = ""; + + while ( 1 ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + break; + Q_strcat( buffer, sizeof (buffer), token ); + Q_strcat( buffer, sizeof (buffer), " " ); + } + + ParseTexMod( buffer, stage ); + + continue; + } + // + // depthmask + // + else if ( !Q_stricmp( token, "depthwrite" ) ) + { + depthMaskBits = GLS_DEPTHMASK_TRUE; + depthMaskExplicit = true; + + continue; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown parameter '%s' in shader '%s'\n", token, shader.name ); + return false; + } + } + + // + // if cgen isn't explicitly specified, use either identity or identitylighting + // + if ( stage->rgbGen == CGEN_BAD ) { + if ( blendSrcBits == 0 || + blendSrcBits == GLS_SRCBLEND_ONE || + blendSrcBits == GLS_SRCBLEND_SRC_ALPHA ) { + stage->rgbGen = CGEN_IDENTITY_LIGHTING; + } else { + stage->rgbGen = CGEN_IDENTITY; + } + } + + + // + // implicitly assume that a GL_ONE GL_ZERO blend mask disables blending + // + if ( ( blendSrcBits == GLS_SRCBLEND_ONE ) && + ( blendDstBits == GLS_DSTBLEND_ZERO ) ) + { + blendDstBits = blendSrcBits = 0; + depthMaskBits = GLS_DEPTHMASK_TRUE; + } + + // decide which agens we can skip + if ( stage->alphaGen == AGEN_IDENTITY ) { + if ( stage->rgbGen == CGEN_IDENTITY + || stage->rgbGen == CGEN_LIGHTING_DIFFUSE ) { + stage->alphaGen = AGEN_SKIP; + } + } + + // + // compute state bits + // + stage->stateBits = depthMaskBits | + blendSrcBits | blendDstBits | + atestBits | + depthFuncBits; + + return true; +} + +/* +=============== +ParseDeform + +deformVertexes wave <spread> <waveform> <base> <amplitude> <phase> <frequency> +deformVertexes normal <frequency> <amplitude> +deformVertexes move <vector> <waveform> <base> <amplitude> <phase> <frequency> +deformVertexes bulge <bulgeWidth> <bulgeHeight> <bulgeSpeed> +deformVertexes projectionShadow +deformVertexes autoSprite +deformVertexes autoSprite2 +deformVertexes text[0-7] +=============== +*/ +static void ParseDeform( char **text ) { + char *token; + deformStage_t *ds; + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deform parm in shader '%s'\n", shader.name ); + return; + } + + if ( shader.numDeforms == MAX_SHADER_DEFORMS ) { + ri.Printf( PRINT_WARNING, "WARNING: MAX_SHADER_DEFORMS in '%s'\n", shader.name ); + return; + } + + ds = &shader.deforms[ shader.numDeforms ]; + shader.numDeforms++; + + if ( !Q_stricmp( token, "projectionShadow" ) ) { + ds->deformation = DEFORM_PROJECTION_SHADOW; + return; + } + + if ( !Q_stricmp( token, "autosprite" ) ) { + ds->deformation = DEFORM_AUTOSPRITE; + return; + } + + if ( !Q_stricmp( token, "autosprite2" ) ) { + ds->deformation = DEFORM_AUTOSPRITE2; + return; + } + + if ( !Q_stricmpn( token, "text", 4 ) ) { + int n; + + n = token[4] - '0'; + if ( n < 0 || n > 7 ) { + n = 0; + } + ds->deformation = (deform_t)(DEFORM_TEXT0 + n); + return; + } + + if ( !Q_stricmp( token, "bulge" ) ) { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes bulge parm in shader '%s'\n", shader.name ); + return; + } + ds->bulgeWidth = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes bulge parm in shader '%s'\n", shader.name ); + return; + } + ds->bulgeHeight = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes bulge parm in shader '%s'\n", shader.name ); + return; + } + ds->bulgeSpeed = atof( token ); + + ds->deformation = DEFORM_BULGE; + return; + } + + if ( !Q_stricmp( token, "wave" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes parm in shader '%s'\n", shader.name ); + return; + } + + if ( atof( token ) != 0 ) + { + ds->deformationSpread = 1.0f / atof( token ); + } + else + { + ds->deformationSpread = 100.0f; + ri.Printf( PRINT_WARNING, "WARNING: illegal div value of 0 in deformVertexes command for shader '%s'\n", shader.name ); + } + + ParseWaveForm( text, &ds->deformationWave ); + ds->deformation = DEFORM_WAVE; + return; + } + + if ( !Q_stricmp( token, "normal" ) ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes parm in shader '%s'\n", shader.name ); + return; + } + ds->deformationWave.amplitude = atof( token ); + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes parm in shader '%s'\n", shader.name ); + return; + } + ds->deformationWave.frequency = atof( token ); + + ds->deformation = DEFORM_NORMALS; + return; + } + + if ( !Q_stricmp( token, "move" ) ) { + int i; + + for ( i = 0 ; i < 3 ; i++ ) { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) { + ri.Printf( PRINT_WARNING, "WARNING: missing deformVertexes parm in shader '%s'\n", shader.name ); + return; + } + ds->moveVector[i] = atof( token ); + } + + ParseWaveForm( text, &ds->deformationWave ); + ds->deformation = DEFORM_MOVE; + return; + } + + ri.Printf( PRINT_WARNING, "WARNING: unknown deformVertexes subtype '%s' found in shader '%s'\n", token, shader.name ); +} + + +/* +=============== +ParseSkyParms + +skyParms <outerbox> <cloudheight> <innerbox> +=============== +*/ +static void ParseSkyParms( char **text ) { + char *token; + static const char *suf[6] = {"rt", "bk", "lf", "ft", "up", "dn"}; + char pathname[MAX_QPATH]; + int i; + int/*imgFlags_t*/ imgFlags = IMGFLAG_MIPMAP | IMGFLAG_PICMIP; + + // outerbox + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) { + ri.Printf( PRINT_WARNING, "WARNING: 'skyParms' missing parameter in shader '%s'\n", shader.name ); + return; + } + if ( strcmp( token, "-" ) ) { + for (i=0 ; i<6 ; i++) { + Com_sprintf( pathname, sizeof(pathname), "%s_%s.tga" + , token, suf[i] ); + shader.sky.outerbox[i] = R_FindImageFile( ( char * ) pathname, IMGTYPE_COLORALPHA, imgFlags | IMGFLAG_CLAMPTOEDGE ); + + if ( !shader.sky.outerbox[i] ) { + shader.sky.outerbox[i] = tr.defaultImage; + } + } + } + + // cloudheight + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) { + ri.Printf( PRINT_WARNING, "WARNING: 'skyParms' missing parameter in shader '%s'\n", shader.name ); + return; + } + shader.sky.cloudHeight = atof( token ); + if ( !shader.sky.cloudHeight ) { + shader.sky.cloudHeight = 512; + } + R_InitSkyTexCoords( shader.sky.cloudHeight ); + + + // innerbox + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) { + ri.Printf( PRINT_WARNING, "WARNING: 'skyParms' missing parameter in shader '%s'\n", shader.name ); + return; + } + if ( strcmp( token, "-" ) ) { + for (i=0 ; i<6 ; i++) { + Com_sprintf( pathname, sizeof(pathname), "%s_%s.tga" + , token, suf[i] ); + shader.sky.innerbox[i] = R_FindImageFile( ( char * ) pathname, IMGTYPE_COLORALPHA, imgFlags ); + if ( !shader.sky.innerbox[i] ) { + shader.sky.innerbox[i] = tr.defaultImage; + } + } + } + + shader.isSky = true; +} + + +/* +================= +ParseSort +================= +*/ +void ParseSort( char **text ) { + char *token; + + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) { + ri.Printf( PRINT_WARNING, "WARNING: missing sort parameter in shader '%s'\n", shader.name ); + return; + } + + if ( !Q_stricmp( token, "portal" ) ) { + shader.sort = SS_PORTAL; + } else if ( !Q_stricmp( token, "sky" ) ) { + shader.sort = SS_ENVIRONMENT; + } else if ( !Q_stricmp( token, "opaque" ) ) { + shader.sort = SS_OPAQUE; + }else if ( !Q_stricmp( token, "decal" ) ) { + shader.sort = SS_DECAL; + } else if ( !Q_stricmp( token, "seeThrough" ) ) { + shader.sort = SS_SEE_THROUGH; + } else if ( !Q_stricmp( token, "banner" ) ) { + shader.sort = SS_BANNER; + } else if ( !Q_stricmp( token, "additive" ) ) { + shader.sort = SS_BLEND1; + } else if ( !Q_stricmp( token, "nearest" ) ) { + shader.sort = SS_NEAREST; + } else if ( !Q_stricmp( token, "underwater" ) ) { + shader.sort = SS_UNDERWATER; + } else { + shader.sort = atof( token ); + } +} + + + +// this table is also present in q3map + +typedef struct { + const char *name; + unsigned clearSolid, surfaceFlags, contents; +} infoParm_t; + +infoParm_t infoParms[] = { + // server relevant contents + {"water", 1, 0, CONTENTS_WATER }, + {"slime", 1, 0, CONTENTS_SLIME }, // mildly damaging + {"lava", 1, 0, CONTENTS_LAVA }, // very damaging + {"playerclip", 1, 0, CONTENTS_PLAYERCLIP }, + {"monsterclip", 1, 0, CONTENTS_MONSTERCLIP }, + {"nodrop", 1, 0, CONTENTS_NODROP }, // don't drop items or leave bodies (death fog, lava, etc) + {"nonsolid", 1, SURF_NONSOLID, 0}, // clears the solid flag + + // utility relevant attributes + {"origin", 1, 0, CONTENTS_ORIGIN }, // center of rotating brushes + {"trans", 0, 0, CONTENTS_TRANSLUCENT }, // don't eat contained surfaces + {"detail", 0, 0, CONTENTS_DETAIL }, // don't include in structural bsp + {"structural", 0, 0, CONTENTS_STRUCTURAL }, // force into structural bsp even if trnas + {"areaportal", 1, 0, CONTENTS_AREAPORTAL }, // divides areas + {"clusterportal", 1,0, CONTENTS_CLUSTERPORTAL }, // for bots + {"donotenter", 1, 0, CONTENTS_DONOTENTER }, // for bots + + {"fog", 1, 0, CONTENTS_FOG}, // carves surfaces entering + {"sky", 0, SURF_SKY, 0 }, // emit light from an environment map + {"lightfilter", 0, SURF_LIGHTFILTER, 0 }, // filter light going through it + {"alphashadow", 0, SURF_ALPHASHADOW, 0 }, // test light on a per-pixel basis + {"hint", 0, SURF_HINT, 0 }, // use as a primary splitter + + // server attributes + {"slick", 0, SURF_SLICK, 0 }, + {"noimpact", 0, SURF_NOIMPACT, 0 }, // don't make impact explosions or marks + {"nomarks", 0, SURF_NOMARKS, 0 }, // don't make impact marks, but still explode + {"ladder", 0, SURF_LADDER, 0 }, + {"nodamage", 0, SURF_NODAMAGE, 0 }, + {"metalsteps", 0, SURF_METALSTEPS,0 }, + {"flesh", 0, SURF_FLESH, 0 }, + {"nosteps", 0, SURF_NOSTEPS, 0 }, + + // drawsurf attributes + {"nodraw", 0, SURF_NODRAW, 0 }, // don't generate a drawsurface (or a lightmap) + {"pointlight", 0, SURF_POINTLIGHT, 0 }, // sample lighting at vertexes + {"nolightmap", 0, SURF_NOLIGHTMAP,0 }, // don't generate a lightmap + {"nodlight", 0, SURF_NODLIGHT, 0 }, // don't ever add dynamic lights + {"dust", 0, SURF_DUST, 0} // leave a dust trail when walking on this surface +}; + + +/* +=============== +ParseSurfaceParm + +surfaceparm <name> +=============== +*/ +static void ParseSurfaceParm( char **text ) { + char *token; + int numInfoParms = ARRAY_LEN( infoParms ); + int i; + + token = COM_ParseExt( text, qfalse ); + for ( i = 0 ; i < numInfoParms ; i++ ) { + if ( !Q_stricmp( token, infoParms[i].name ) ) { + shader.surfaceFlags |= infoParms[i].surfaceFlags; + shader.contentFlags |= infoParms[i].contents; +#if 0 + if ( infoParms[i].clearSolid ) { + si->contents &= ~CONTENTS_SOLID; + } +#endif + break; + } + } +} + +/* +================= +ParseShader + +The current text pointer is at the explicit text definition of the +shader. Parse it into the global shader variable. Later functions +will optimize it. +================= +*/ +static bool ParseShader( char **text ) +{ + char *token; + int s; + + s = 0; + + token = COM_ParseExt( text, qtrue ); + if ( token[0] != '{' ) + { + ri.Printf( PRINT_WARNING, "WARNING: expecting '{', found '%s' instead in shader '%s'\n", token, shader.name ); + return false; + } + + while ( 1 ) + { + token = COM_ParseExt( text, qtrue ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: no concluding '}' in shader %s\n", shader.name ); + return false; + } + + // end of shader definition + if ( token[0] == '}' ) + { + break; + } + // stage definition + else if ( token[0] == '{' ) + { + if ( s >= MAX_SHADER_STAGES ) { + ri.Printf( PRINT_WARNING, "WARNING: too many stages in shader %s (max is %i)\n", shader.name, MAX_SHADER_STAGES ); + return false; + } + + if ( !ParseStage( &stages[s], text ) ) + { + return false; + } + stages[s].active = true; + s++; + + continue; + } + // skip stuff that only the QuakeEdRadient needs + else if ( !Q_stricmpn( token, "qer", 3 ) ) { + SkipRestOfLine( text ); + continue; + } + // sun parms + else if ( !Q_stricmp( token, "q3map_sun" ) || !Q_stricmp( token, "q3map_sunExt" ) || !Q_stricmp( token, "q3gl2_sun" ) ) { + float a, b; + bool isGL2Sun = false; + + if (!Q_stricmp( token, "q3gl2_sun" ) && r_sunShadows->integer ) + { + isGL2Sun = true; + tr.sunShadows = true; + } + + token = COM_ParseExt( text, qfalse ); + tr.sunLight[0] = atof( token ); + token = COM_ParseExt( text, qfalse ); + tr.sunLight[1] = atof( token ); + token = COM_ParseExt( text, qfalse ); + tr.sunLight[2] = atof( token ); + + VectorNormalize( tr.sunLight ); + + token = COM_ParseExt( text, qfalse ); + a = atof( token ); + VectorScale( tr.sunLight, a, tr.sunLight); + + token = COM_ParseExt( text, qfalse ); + a = atof( token ); + a = a / 180 * M_PI; + + token = COM_ParseExt( text, qfalse ); + b = atof( token ); + b = b / 180 * M_PI; + + tr.sunDirection[0] = cos( a ) * cos( b ); + tr.sunDirection[1] = sin( a ) * cos( b ); + tr.sunDirection[2] = sin( b ); + + if (isGL2Sun) + { + token = COM_ParseExt( text, qfalse ); + tr.sunShadowScale = atof(token); + + // parse twice, since older shaders may include mapLightScale before sunShadowScale + token = COM_ParseExt( text, qfalse ); + if (token[0]) + tr.sunShadowScale = atof(token); + } + + SkipRestOfLine( text ); + continue; + } + // tonemap parms + else if ( !Q_stricmp( token, "q3gl2_tonemap" ) ) { + token = COM_ParseExt( text, qfalse ); + tr.toneMinAvgMaxLevel[0] = atof( token ); + token = COM_ParseExt( text, qfalse ); + tr.toneMinAvgMaxLevel[1] = atof( token ); + token = COM_ParseExt( text, qfalse ); + tr.toneMinAvgMaxLevel[2] = atof( token ); + + token = COM_ParseExt( text, qfalse ); + tr.autoExposureMinMax[0] = atof( token ); + token = COM_ParseExt( text, qfalse ); + tr.autoExposureMinMax[1] = atof( token ); + + SkipRestOfLine( text ); + continue; + } + else if ( !Q_stricmp( token, "deformVertexes" ) ) { + ParseDeform( text ); + continue; + } + else if ( !Q_stricmp( token, "tesssize" ) ) { + SkipRestOfLine( text ); + continue; + } + else if ( !Q_stricmp( token, "clampTime" ) ) { + token = COM_ParseExt( text, qfalse ); + if (token[0]) { + shader.clampTime = atof(token); + } + } + // skip stuff that only the q3map needs + else if ( !Q_stricmpn( token, "q3map", 5 ) ) { + SkipRestOfLine( text ); + continue; + } + // skip stuff that only q3map or the server needs + else if ( !Q_stricmp( token, "surfaceParm" ) ) { + ParseSurfaceParm( text ); + continue; + } + // no mip maps + else if ( !Q_stricmp( token, "nomipmaps" ) ) + { + shader.noMipMaps = true; + shader.noPicMip = true; + continue; + } + // no picmip adjustment + else if ( !Q_stricmp( token, "nopicmip" ) ) + { + shader.noPicMip = true; + continue; + } + // polygonOffset + else if ( !Q_stricmp( token, "polygonOffset" ) ) + { + shader.polygonOffset = true; + continue; + } + // entityMergable, allowing sprite surfaces from multiple entities + // to be merged into one batch. This is a savings for smoke + // puffs and blood, but can't be used for anything where the + // shader calcs (not the surface function) reference the entity color or scroll + else if ( !Q_stricmp( token, "entityMergable" ) ) + { + shader.entityMergable = true; + continue; + } + // fogParms + else if ( !Q_stricmp( token, "fogParms" ) ) + { + if ( !ParseVector( text, 3, shader.fogParms.color ) ) { + return false; + } + + if ( r_greyscale->integer ) + { + float luminance; + + luminance = LUMA( shader.fogParms.color[0], shader.fogParms.color[1], shader.fogParms.color[2] ); + VectorSet( shader.fogParms.color, luminance, luminance, luminance ); + } + else if ( r_greyscale->value ) + { + float luminance; + + luminance = LUMA( shader.fogParms.color[0], shader.fogParms.color[1], shader.fogParms.color[2] ); + shader.fogParms.color[0] = LERP( shader.fogParms.color[0], luminance, r_greyscale->value ); + shader.fogParms.color[1] = LERP( shader.fogParms.color[1], luminance, r_greyscale->value ); + shader.fogParms.color[2] = LERP( shader.fogParms.color[2], luminance, r_greyscale->value ); + } + + token = COM_ParseExt( text, qfalse ); + if ( !token[0] ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing parm for 'fogParms' keyword in shader '%s'\n", shader.name ); + continue; + } + shader.fogParms.depthForOpaque = atof( token ); + + // skip any old gradient directions + SkipRestOfLine( text ); + continue; + } + // portal + else if ( !Q_stricmp(token, "portal") ) + { + shader.sort = SS_PORTAL; + shader.isPortal = true; + continue; + } + // skyparms <cloudheight> <outerbox> <innerbox> + else if ( !Q_stricmp( token, "skyparms" ) ) + { + ParseSkyParms( text ); + continue; + } + // light <value> determines flaring in q3map, not needed here + else if ( !Q_stricmp(token, "light") ) + { + COM_ParseExt( text, qfalse ); + continue; + } + // cull <face> + else if ( !Q_stricmp( token, "cull") ) + { + token = COM_ParseExt( text, qfalse ); + if ( token[0] == 0 ) + { + ri.Printf( PRINT_WARNING, "WARNING: missing cull parms in shader '%s'\n", shader.name ); + continue; + } + + if ( !Q_stricmp( token, "none" ) || !Q_stricmp( token, "twosided" ) || !Q_stricmp( token, "disable" ) ) + { + shader.cullType = CT_TWO_SIDED; + } + else if ( !Q_stricmp( token, "back" ) || !Q_stricmp( token, "backside" ) || !Q_stricmp( token, "backsided" ) ) + { + shader.cullType = CT_BACK_SIDED; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: invalid cull parm '%s' in shader '%s'\n", token, shader.name ); + } + continue; + } + // sort + else if ( !Q_stricmp( token, "sort" ) ) + { + ParseSort( text ); + continue; + } + else + { + ri.Printf( PRINT_WARNING, "WARNING: unknown general shader parameter '%s' in '%s'\n", token, shader.name ); + return false; + } + } + + // + // ignore shaders that don't have any stages, unless it is a sky or fog + // + if ( s == 0 && !shader.isSky && !(shader.contentFlags & CONTENTS_FOG ) ) { + return false; + } + + shader.explicitlyDefined = true; + + return true; +} + +/* +======================================================================================== + +SHADER OPTIMIZATION AND FOGGING + +======================================================================================== +*/ + +/* +=================== +ComputeStageIteratorFunc + +See if we can use on of the simple fastpath stage functions, +otherwise set to the generic stage function +=================== +*/ +static void ComputeStageIteratorFunc( void ) +{ + shader.optimalStageIteratorFunc = RB_StageIteratorGeneric; + + // + // see if this should go into the sky path + // + if ( shader.isSky ) + { + shader.optimalStageIteratorFunc = RB_StageIteratorSky; + return; + } +} + +/* +=================== +ComputeVertexAttribs + +Check which vertex attributes we only need, so we +don't need to submit/copy all of them. +=================== +*/ +static void ComputeVertexAttribs(void) +{ + int i, stage; + + // dlights always need ATTR_NORMAL + shader.vertexAttribs = ATTR_POSITION | ATTR_NORMAL; + + // portals always need normals, for SurfIsOffscreen() + if (shader.isPortal) + { + shader.vertexAttribs |= ATTR_NORMAL; + } + + if (shader.defaultShader) + { + shader.vertexAttribs |= ATTR_TEXCOORD; + return; + } + + if(shader.numDeforms) + { + for ( i = 0; i < shader.numDeforms; i++) + { + deformStage_t *ds = &shader.deforms[i]; + + switch (ds->deformation) + { + case DEFORM_BULGE: + shader.vertexAttribs |= ATTR_NORMAL | ATTR_TEXCOORD; + break; + + case DEFORM_AUTOSPRITE: + shader.vertexAttribs |= ATTR_NORMAL | ATTR_COLOR; + break; + + case DEFORM_WAVE: + case DEFORM_NORMALS: + case DEFORM_TEXT0: + case DEFORM_TEXT1: + case DEFORM_TEXT2: + case DEFORM_TEXT3: + case DEFORM_TEXT4: + case DEFORM_TEXT5: + case DEFORM_TEXT6: + case DEFORM_TEXT7: + shader.vertexAttribs |= ATTR_NORMAL; + break; + + default: + case DEFORM_NONE: + case DEFORM_MOVE: + case DEFORM_PROJECTION_SHADOW: + case DEFORM_AUTOSPRITE2: + break; + } + } + } + + for ( stage = 0; stage < MAX_SHADER_STAGES; stage++ ) + { + shaderStage_t *pStage = &stages[stage]; + + if ( !pStage->active ) + { + break; + } + + if (pStage->glslShaderGroup == tr.lightallShader) + { + shader.vertexAttribs |= ATTR_NORMAL; + + if ((pStage->glslShaderIndex & LIGHTDEF_LIGHTTYPE_MASK) && !(r_normalMapping->integer == 0 && r_specularMapping->integer == 0)) + { + shader.vertexAttribs |= ATTR_TANGENT; + } + + switch (pStage->glslShaderIndex & LIGHTDEF_LIGHTTYPE_MASK) + { + case LIGHTDEF_USE_LIGHTMAP: + case LIGHTDEF_USE_LIGHT_VERTEX: + shader.vertexAttribs |= ATTR_LIGHTDIRECTION; + break; + default: + break; + } + } + + for (i = 0; i < NUM_TEXTURE_BUNDLES; i++) + { + if ( pStage->bundle[i].image[0] == 0 ) + { + continue; + } + + switch(pStage->bundle[i].tcGen) + { + case TCGEN_TEXTURE: + shader.vertexAttribs |= ATTR_TEXCOORD; + break; + case TCGEN_LIGHTMAP: + shader.vertexAttribs |= ATTR_LIGHTCOORD; + break; + case TCGEN_ENVIRONMENT_MAPPED: + shader.vertexAttribs |= ATTR_NORMAL; + break; + + default: + break; + } + } + + switch(pStage->rgbGen) + { + case CGEN_EXACT_VERTEX: + case CGEN_VERTEX: + case CGEN_EXACT_VERTEX_LIT: + case CGEN_VERTEX_LIT: + case CGEN_ONE_MINUS_VERTEX: + shader.vertexAttribs |= ATTR_COLOR; + break; + + case CGEN_LIGHTING_DIFFUSE: + shader.vertexAttribs |= ATTR_NORMAL; + break; + + default: + break; + } + + switch(pStage->alphaGen) + { + case AGEN_LIGHTING_SPECULAR: + shader.vertexAttribs |= ATTR_NORMAL; + break; + + case AGEN_VERTEX: + case AGEN_ONE_MINUS_VERTEX: + shader.vertexAttribs |= ATTR_COLOR; + break; + + default: + break; + } + } +} + + +static void CollapseStagesToLightall(shaderStage_t *diffuse, + shaderStage_t *normal, shaderStage_t *specular, shaderStage_t *lightmap, + bool useLightVector, bool useLightVertex, bool parallax, bool tcgen) +{ + int defs = 0; + + //ri.Printf(PRINT_ALL, "shader %s has diffuse %s", shader.name, diffuse->bundle[0].image[0]->imgName); + + // reuse diffuse, mark others inactive + diffuse->type = ST_GLSL; + + if (lightmap) + { + //ri.Printf(PRINT_ALL, ", lightmap"); + diffuse->bundle[TB_LIGHTMAP] = lightmap->bundle[0]; + defs |= LIGHTDEF_USE_LIGHTMAP; + } + else if (useLightVector) + { + defs |= LIGHTDEF_USE_LIGHT_VECTOR; + } + else if (useLightVertex) + { + defs |= LIGHTDEF_USE_LIGHT_VERTEX; + } + + if (r_deluxeMapping->integer && tr.worldDeluxeMapping && lightmap) + { + //ri.Printf(PRINT_ALL, ", deluxemap"); + diffuse->bundle[TB_DELUXEMAP] = lightmap->bundle[0]; + diffuse->bundle[TB_DELUXEMAP].image[0] = tr.deluxemaps[shader.lightmapIndex]; + } + + if (r_normalMapping->integer) + { + image_t *diffuseImg; + if (normal) + { + //ri.Printf(PRINT_ALL, ", normalmap %s", normal->bundle[0].image[0]->imgName); + diffuse->bundle[TB_NORMALMAP] = normal->bundle[0]; + if (parallax && r_parallaxMapping->integer) + defs |= LIGHTDEF_USE_PARALLAXMAP; + + VectorCopy4(normal->normalScale, diffuse->normalScale); + } + else if ((lightmap || useLightVector || useLightVertex) && (diffuseImg = diffuse->bundle[TB_DIFFUSEMAP].image[0])) + { + char normalName[MAX_QPATH]; + image_t *normalImg; + int/*imgFlags_t*/ normalFlags = (diffuseImg->flags & ~IMGFLAG_GENNORMALMAP) | IMGFLAG_NOLIGHTSCALE; + + // try a normalheight image first + COM_StripExtension(diffuseImg->imgName, normalName, MAX_QPATH); + Q_strcat(normalName, MAX_QPATH, "_nh"); + + normalImg = R_FindImageFile(normalName, IMGTYPE_NORMALHEIGHT, normalFlags); + + if (normalImg) + { + parallax = true; + } + else + { + // try a normal image ("_n" suffix) + normalName[strlen(normalName) - 1] = '\0'; + normalImg = R_FindImageFile(normalName, IMGTYPE_NORMAL, normalFlags); + } + + if (normalImg) + { + diffuse->bundle[TB_NORMALMAP] = diffuse->bundle[0]; + diffuse->bundle[TB_NORMALMAP].numImageAnimations = 0; + diffuse->bundle[TB_NORMALMAP].image[0] = normalImg; + + if (parallax && r_parallaxMapping->integer) + defs |= LIGHTDEF_USE_PARALLAXMAP; + + VectorSet4(diffuse->normalScale, r_baseNormalX->value, r_baseNormalY->value, 1.0f, r_baseParallax->value); + } + } + } + + if (r_specularMapping->integer) + { + image_t *diffuseImg; + if (specular) + { + //ri.Printf(PRINT_ALL, ", specularmap %s", specular->bundle[0].image[0]->imgName); + diffuse->bundle[TB_SPECULARMAP] = specular->bundle[0]; + VectorCopy4(specular->specularScale, diffuse->specularScale); + } + else if ((lightmap || useLightVector || useLightVertex) && (diffuseImg = diffuse->bundle[TB_DIFFUSEMAP].image[0])) + { + char specularName[MAX_QPATH]; + image_t *specularImg; + int/*imgFlags_t*/ specularFlags = (diffuseImg->flags & ~IMGFLAG_GENNORMALMAP) | IMGFLAG_NOLIGHTSCALE; + + COM_StripExtension(diffuseImg->imgName, specularName, MAX_QPATH); + Q_strcat(specularName, MAX_QPATH, "_s"); + + specularImg = R_FindImageFile(specularName, IMGTYPE_COLORALPHA, specularFlags); + + if (specularImg) + { + diffuse->bundle[TB_SPECULARMAP] = diffuse->bundle[0]; + diffuse->bundle[TB_SPECULARMAP].numImageAnimations = 0; + diffuse->bundle[TB_SPECULARMAP].image[0] = specularImg; + + VectorSet4(diffuse->specularScale, 1.0f, 1.0f, 1.0f, 1.0f); + } + } + } + + if (tcgen || diffuse->bundle[0].numTexMods) + { + defs |= LIGHTDEF_USE_TCGEN_AND_TCMOD; + } + + //ri.Printf(PRINT_ALL, ".\n"); + + diffuse->glslShaderGroup = tr.lightallShader; + diffuse->glslShaderIndex = defs; +} + + +static int CollapseStagesToGLSL(void) +{ + int i, j, numStages; + bool skip = false; + + // skip shaders with deforms + if (shader.numDeforms != 0) + { + skip = true; + } + + if (!skip) + { + // if 2+ stages and first stage is lightmap, switch them + // this makes it easier for the later bits to process + if (stages[0].active && stages[0].bundle[0].tcGen == TCGEN_LIGHTMAP && stages[1].active) + { + int blendBits = stages[1].stateBits & ( GLS_DSTBLEND_BITS | GLS_SRCBLEND_BITS ); + + if (blendBits == (GLS_DSTBLEND_SRC_COLOR | GLS_SRCBLEND_ZERO) + || blendBits == (GLS_DSTBLEND_ZERO | GLS_SRCBLEND_DST_COLOR)) + { + int stateBits0 = stages[0].stateBits; + int stateBits1 = stages[1].stateBits; + shaderStage_t swapStage; + + swapStage = stages[0]; + stages[0] = stages[1]; + stages[1] = swapStage; + + stages[0].stateBits = stateBits0; + stages[1].stateBits = stateBits1; + } + } + } + + if (!skip) + { + // scan for shaders that aren't supported + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + shaderStage_t *pStage = &stages[i]; + + if (!pStage->active) + continue; + + if (pStage->adjustColorsForFog) + { + skip = true; + break; + } + + if (pStage->bundle[0].tcGen == TCGEN_LIGHTMAP) + { + int blendBits = pStage->stateBits & ( GLS_DSTBLEND_BITS | GLS_SRCBLEND_BITS ); + + if (blendBits != (GLS_DSTBLEND_SRC_COLOR | GLS_SRCBLEND_ZERO) + && blendBits != (GLS_DSTBLEND_ZERO | GLS_SRCBLEND_DST_COLOR)) + { + skip = true; + break; + } + } + + switch(pStage->bundle[0].tcGen) + { + case TCGEN_TEXTURE: + case TCGEN_LIGHTMAP: + case TCGEN_ENVIRONMENT_MAPPED: + case TCGEN_VECTOR: + break; + default: + skip = true; + break; + } + + switch(pStage->alphaGen) + { + case AGEN_LIGHTING_SPECULAR: + case AGEN_PORTAL: + skip = true; + break; + default: + break; + } + } + } + + if (!skip) + { + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + shaderStage_t *pStage = &stages[i]; + shaderStage_t *diffuse, *normal, *specular, *lightmap; + bool parallax, tcgen, diffuselit, vertexlit; + + if (!pStage->active) + continue; + + // skip normal and specular maps + if (pStage->type != ST_COLORMAP) + continue; + + // skip lightmaps + if (pStage->bundle[0].tcGen == TCGEN_LIGHTMAP) + continue; + + diffuse = pStage; + normal = NULL; + parallax = false; + specular = NULL; + lightmap = NULL; + + // we have a diffuse map, find matching normal, specular, and lightmap + for (j = i + 1; j < MAX_SHADER_STAGES; j++) + { + shaderStage_t *pStage2 = &stages[j]; + + if (!pStage2->active) + continue; + + switch(pStage2->type) + { + case ST_NORMALMAP: + if (!normal) + { + normal = pStage2; + } + break; + + case ST_NORMALPARALLAXMAP: + if (!normal) + { + normal = pStage2; + parallax = true; + } + break; + + case ST_SPECULARMAP: + if (!specular) + { + specular = pStage2; + } + break; + + case ST_COLORMAP: + if (pStage2->bundle[0].tcGen == TCGEN_LIGHTMAP) + { + lightmap = pStage2; + } + break; + + default: + break; + } + } + + tcgen = false; + if (diffuse->bundle[0].tcGen == TCGEN_ENVIRONMENT_MAPPED + || diffuse->bundle[0].tcGen == TCGEN_LIGHTMAP + || diffuse->bundle[0].tcGen == TCGEN_VECTOR) + { + tcgen = true; + } + + diffuselit = false; + if (diffuse->rgbGen == CGEN_LIGHTING_DIFFUSE) + { + diffuselit = true; + } + + vertexlit = false; + if (diffuse->rgbGen == CGEN_VERTEX_LIT || diffuse->rgbGen == CGEN_EXACT_VERTEX_LIT) + { + vertexlit = true; + } + + CollapseStagesToLightall(diffuse, normal, specular, lightmap, diffuselit, vertexlit, parallax, tcgen); + } + + // deactivate lightmap stages + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + shaderStage_t *pStage = &stages[i]; + + if (!pStage->active) + continue; + + if (pStage->bundle[0].tcGen == TCGEN_LIGHTMAP) + { + pStage->active = false; + } + } + } + + // deactivate normal and specular stages + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + shaderStage_t *pStage = &stages[i]; + + if (!pStage->active) + continue; + + if (pStage->type == ST_NORMALMAP) + { + pStage->active = false; + } + + if (pStage->type == ST_NORMALPARALLAXMAP) + { + pStage->active = false; + } + + if (pStage->type == ST_SPECULARMAP) + { + pStage->active = false; + } + } + + // remove inactive stages + numStages = 0; + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + if (!stages[i].active) + continue; + + if (i == numStages) + { + numStages++; + continue; + } + + stages[numStages] = stages[i]; + stages[i].active = false; + numStages++; + } + + // convert any remaining lightmap stages to a lighting pass with a white texture + // only do this with r_sunlightMode non-zero, as it's only for correct shadows. + if (r_sunlightMode->integer && shader.numDeforms == 0) + { + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + shaderStage_t *pStage = &stages[i]; + + if (!pStage->active) + continue; + + if (pStage->adjustColorsForFog) + continue; + + if (pStage->bundle[TB_DIFFUSEMAP].tcGen == TCGEN_LIGHTMAP) + { + pStage->glslShaderGroup = tr.lightallShader; + pStage->glslShaderIndex = LIGHTDEF_USE_LIGHTMAP; + pStage->bundle[TB_LIGHTMAP] = pStage->bundle[TB_DIFFUSEMAP]; + pStage->bundle[TB_DIFFUSEMAP].image[0] = tr.whiteImage; + pStage->bundle[TB_DIFFUSEMAP].isLightmap = false; + pStage->bundle[TB_DIFFUSEMAP].tcGen = TCGEN_TEXTURE; + } + } + } + + // convert any remaining lightingdiffuse stages to a lighting pass + if (shader.numDeforms == 0) + { + for (i = 0; i < MAX_SHADER_STAGES; i++) + { + shaderStage_t *pStage = &stages[i]; + + if (!pStage->active) + continue; + + if (pStage->adjustColorsForFog) + continue; + + if (pStage->rgbGen == CGEN_LIGHTING_DIFFUSE) + { + pStage->glslShaderGroup = tr.lightallShader; + pStage->glslShaderIndex = LIGHTDEF_USE_LIGHT_VECTOR; + + if (pStage->bundle[0].tcGen != TCGEN_TEXTURE || pStage->bundle[0].numTexMods != 0) + pStage->glslShaderIndex |= LIGHTDEF_USE_TCGEN_AND_TCMOD; + } + } + } + + return numStages; +} + +/* +============= + +FixRenderCommandList +https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=493 +Arnout: this is a nasty issue. Shaders can be registered after drawsurfaces are generated +but before the frame is rendered. This will, for the duration of one frame, cause drawsurfaces +to be rendered with bad shaders. To fix this, need to go through all render commands and fix +sortedIndex. +============== +*/ +static void FixRenderCommandList( int newShader ) { + renderCommandList_t *cmdList = &backEndData->commands; + + if( cmdList ) { + const void *curCmd = cmdList->cmds; + + while ( 1 ) { + curCmd = PADP(curCmd, sizeof(void *)); + + switch ( *(const int *)curCmd ) { + case RC_SET_COLOR: + { + const setColorCommand_t *sc_cmd = (const setColorCommand_t *)curCmd; + curCmd = (const void *)(sc_cmd + 1); + break; + } + case RC_STRETCH_PIC: + { + const stretchPicCommand_t *sp_cmd = (const stretchPicCommand_t *)curCmd; + curCmd = (const void *)(sp_cmd + 1); + break; + } + case RC_DRAW_SURFS: + { + int i; + drawSurf_t *drawSurf; + shader_t *shader; + int fogNum; + int entityNum; + int dlightMap; + int pshadowMap; + int sortedIndex; + const drawSurfsCommand_t *ds_cmd = (const drawSurfsCommand_t *)curCmd; + + for( i = 0, drawSurf = ds_cmd->drawSurfs; i < ds_cmd->numDrawSurfs; i++, drawSurf++ ) { + R_DecomposeSort( drawSurf->sort, &entityNum, &shader, &fogNum, &dlightMap, &pshadowMap ); + sortedIndex = (( drawSurf->sort >> QSORT_SHADERNUM_SHIFT ) & (MAX_SHADERS-1)); + if( sortedIndex >= newShader ) { + sortedIndex++; + drawSurf->sort = (sortedIndex << QSORT_SHADERNUM_SHIFT) | entityNum | ( fogNum << QSORT_FOGNUM_SHIFT ) | ( (int)pshadowMap << QSORT_PSHADOW_SHIFT) | (int)dlightMap; + } + } + curCmd = (const void *)(ds_cmd + 1); + break; + } + case RC_DRAW_BUFFER: + { + const drawBufferCommand_t *db_cmd = (const drawBufferCommand_t *)curCmd; + curCmd = (const void *)(db_cmd + 1); + break; + } + case RC_SWAP_BUFFERS: + { + const swapBuffersCommand_t *sb_cmd = (const swapBuffersCommand_t *)curCmd; + curCmd = (const void *)(sb_cmd + 1); + break; + } + case RC_END_OF_LIST: + default: + return; + } + } + } +} + +/* +============== +SortNewShader + +Positions the most recently created shader in the tr.sortedShaders[] +array so that the shader->sort key is sorted reletive to the other +shaders. + +Sets shader->sortedIndex +============== +*/ +static void SortNewShader( void ) { + int i; + float sort; + shader_t *newShader; + + newShader = tr.shaders[ tr.numShaders - 1 ]; + sort = newShader->sort; + + for ( i = tr.numShaders - 2 ; i >= 0 ; i-- ) { + if ( tr.sortedShaders[ i ]->sort <= sort ) { + break; + } + tr.sortedShaders[i+1] = tr.sortedShaders[i]; + tr.sortedShaders[i+1]->sortedIndex++; + } + + // Arnout: fix rendercommandlist + // https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=493 + FixRenderCommandList( i+1 ); + + newShader->sortedIndex = i+1; + tr.sortedShaders[i+1] = newShader; +} + + +/* +==================== +GeneratePermanentShader +==================== +*/ +static shader_t *GeneratePermanentShader( void ) { + shader_t *newShader; + int i, b; + int size, hash; + + if ( tr.numShaders == MAX_SHADERS ) { + ri.Printf( PRINT_WARNING, "WARNING: GeneratePermanentShader - MAX_SHADERS hit\n"); + return tr.defaultShader; + } + + newShader = (shader_t*)ri.Hunk_Alloc( sizeof( shader_t ), h_low ); + + *newShader = shader; + + if ( shader.sort <= SS_OPAQUE ) { + newShader->fogPass = FP_EQUAL; + } else if ( shader.contentFlags & CONTENTS_FOG ) { + newShader->fogPass = FP_LE; + } + + tr.shaders[ tr.numShaders ] = newShader; + newShader->index = tr.numShaders; + + tr.sortedShaders[ tr.numShaders ] = newShader; + newShader->sortedIndex = tr.numShaders; + + tr.numShaders++; + + for ( i = 0 ; i < newShader->numUnfoggedPasses ; i++ ) { + if ( !stages[i].active ) { + break; + } + newShader->stages[i] = (shaderStage_t*)ri.Hunk_Alloc( sizeof( stages[i] ), h_low ); + *newShader->stages[i] = stages[i]; + + for ( b = 0 ; b < NUM_TEXTURE_BUNDLES ; b++ ) { + size = newShader->stages[i]->bundle[b].numTexMods * sizeof( texModInfo_t ); + newShader->stages[i]->bundle[b].texMods = (texModInfo_t*)ri.Hunk_Alloc( size, h_low ); + Com_Memcpy( newShader->stages[i]->bundle[b].texMods, stages[i].bundle[b].texMods, size ); + } + } + + SortNewShader(); + + hash = generateHashValue(newShader->name, FILE_HASH_SIZE); + newShader->next = hashTable[hash]; + hashTable[hash] = newShader; + + return newShader; +} + +/* +================= +VertexLightingCollapse + +If vertex lighting is enabled, only render a single +pass, trying to guess which is the correct one to best aproximate +what it is supposed to look like. +================= +*/ +static void VertexLightingCollapse( void ) { + int stage; + shaderStage_t *bestStage; + int bestImageRank; + int rank; + + // if we aren't opaque, just use the first pass + if ( shader.sort == SS_OPAQUE ) { + + // pick the best texture for the single pass + bestStage = &stages[0]; + bestImageRank = -999999; + + for ( stage = 0; stage < MAX_SHADER_STAGES; stage++ ) { + shaderStage_t *pStage = &stages[stage]; + + if ( !pStage->active ) { + break; + } + rank = 0; + + if ( pStage->bundle[0].isLightmap ) { + rank -= 100; + } + if ( pStage->bundle[0].tcGen != TCGEN_TEXTURE ) { + rank -= 5; + } + if ( pStage->bundle[0].numTexMods ) { + rank -= 5; + } + if ( pStage->rgbGen != CGEN_IDENTITY && pStage->rgbGen != CGEN_IDENTITY_LIGHTING ) { + rank -= 3; + } + + if ( rank > bestImageRank ) { + bestImageRank = rank; + bestStage = pStage; + } + } + + stages[0].bundle[0] = bestStage->bundle[0]; + stages[0].stateBits &= ~( GLS_DSTBLEND_BITS | GLS_SRCBLEND_BITS ); + stages[0].stateBits |= GLS_DEPTHMASK_TRUE; + if ( shader.lightmapIndex == LIGHTMAP_NONE ) { + stages[0].rgbGen = CGEN_LIGHTING_DIFFUSE; + } else { + stages[0].rgbGen = CGEN_EXACT_VERTEX; + } + stages[0].alphaGen = AGEN_SKIP; + } else { + // don't use a lightmap (tesla coils) + if ( stages[0].bundle[0].isLightmap ) { + stages[0] = stages[1]; + } + + // if we were in a cross-fade cgen, hack it to normal + if ( stages[0].rgbGen == CGEN_ONE_MINUS_ENTITY || stages[1].rgbGen == CGEN_ONE_MINUS_ENTITY ) { + stages[0].rgbGen = CGEN_IDENTITY_LIGHTING; + } + if ( ( stages[0].rgbGen == CGEN_WAVEFORM && stages[0].rgbWave.func == GF_SAWTOOTH ) + && ( stages[1].rgbGen == CGEN_WAVEFORM && stages[1].rgbWave.func == GF_INVERSE_SAWTOOTH ) ) { + stages[0].rgbGen = CGEN_IDENTITY_LIGHTING; + } + if ( ( stages[0].rgbGen == CGEN_WAVEFORM && stages[0].rgbWave.func == GF_INVERSE_SAWTOOTH ) + && ( stages[1].rgbGen == CGEN_WAVEFORM && stages[1].rgbWave.func == GF_SAWTOOTH ) ) { + stages[0].rgbGen = CGEN_IDENTITY_LIGHTING; + } + } + + for ( stage = 1; stage < MAX_SHADER_STAGES; stage++ ) { + shaderStage_t *pStage = &stages[stage]; + + if ( !pStage->active ) { + break; + } + + Com_Memset( pStage, 0, sizeof( *pStage ) ); + } +} + +/* +=============== +InitShader +=============== +*/ +static void InitShader( const char *name, int lightmapIndex ) { + int i; + + // clear the global shader + Com_Memset( &shader, 0, sizeof( shader ) ); + Com_Memset( &stages, 0, sizeof( stages ) ); + + Q_strncpyz( shader.name, name, sizeof( shader.name ) ); + shader.lightmapIndex = lightmapIndex; + + for ( i = 0 ; i < MAX_SHADER_STAGES ; i++ ) { + stages[i].bundle[0].texMods = texMods[i]; + + // default normal/specular + VectorSet4(stages[i].normalScale, 0.0f, 0.0f, 0.0f, 0.0f); + if (r_pbr->integer) + { + stages[i].specularScale[0] = r_baseGloss->value; + } + else + { + stages[i].specularScale[0] = + stages[i].specularScale[1] = + stages[i].specularScale[2] = r_baseSpecular->value; + stages[i].specularScale[3] = r_baseGloss->value; + } + } +} + +/* +========================= +FinishShader + +Returns a freshly allocated shader with all the needed info +from the current global working shader +========================= +*/ +static shader_t *FinishShader( void ) { + int stage; + bool hasLightmapStage; + bool vertexLightmap; + + hasLightmapStage = false; + vertexLightmap = false; + + // + // set sky stuff appropriate + // + if ( shader.isSky ) { + shader.sort = SS_ENVIRONMENT; + } + + // + // set polygon offset + // + if ( shader.polygonOffset && !shader.sort ) { + shader.sort = SS_DECAL; + } + + // + // set appropriate stage information + // + for ( stage = 0; stage < MAX_SHADER_STAGES; ) { + shaderStage_t *pStage = &stages[stage]; + + if ( !pStage->active ) { + break; + } + + // check for a missing texture + if ( !pStage->bundle[0].image[0] ) { + ri.Printf( PRINT_WARNING, "Shader %s has a stage with no image\n", shader.name ); + pStage->active = false; + stage++; + continue; + } + + // + // ditch this stage if it's detail and detail textures are disabled + // + if ( pStage->isDetail && !r_detailTextures->integer ) + { + int index; + + for(index = stage + 1; index < MAX_SHADER_STAGES; index++) + { + if(!stages[index].active) + break; + } + + if(index < MAX_SHADER_STAGES) + memmove(pStage, pStage + 1, sizeof(*pStage) * (index - stage)); + else + { + if(stage + 1 < MAX_SHADER_STAGES) + memmove(pStage, pStage + 1, sizeof(*pStage) * (index - stage - 1)); + + Com_Memset(&stages[index - 1], 0, sizeof(*stages)); + } + + continue; + } + + // + // default texture coordinate generation + // + if ( pStage->bundle[0].isLightmap ) { + if ( pStage->bundle[0].tcGen == TCGEN_BAD ) { + pStage->bundle[0].tcGen = TCGEN_LIGHTMAP; + } + hasLightmapStage = true; + } else { + if ( pStage->bundle[0].tcGen == TCGEN_BAD ) { + pStage->bundle[0].tcGen = TCGEN_TEXTURE; + } + } + + + // not a true lightmap but we want to leave existing + // behaviour in place and not print out a warning + //if (pStage->rgbGen == CGEN_VERTEX) { + // vertexLightmap = true; + //} + + + + // + // determine sort order and fog color adjustment + // + if ( ( pStage->stateBits & ( GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS ) ) && + ( stages[0].stateBits & ( GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS ) ) ) { + int blendSrcBits = pStage->stateBits & GLS_SRCBLEND_BITS; + int blendDstBits = pStage->stateBits & GLS_DSTBLEND_BITS; + + // fog color adjustment only works for blend modes that have a contribution + // that aproaches 0 as the modulate values aproach 0 -- + // GL_ONE, GL_ONE + // GL_ZERO, GL_ONE_MINUS_SRC_COLOR + // GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA + + // modulate, additive + if ( ( ( blendSrcBits == GLS_SRCBLEND_ONE ) && ( blendDstBits == GLS_DSTBLEND_ONE ) ) || + ( ( blendSrcBits == GLS_SRCBLEND_ZERO ) && ( blendDstBits == GLS_DSTBLEND_ONE_MINUS_SRC_COLOR ) ) ) { + pStage->adjustColorsForFog = ACFF_MODULATE_RGB; + } + // strict blend + else if ( ( blendSrcBits == GLS_SRCBLEND_SRC_ALPHA ) && ( blendDstBits == GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA ) ) + { + pStage->adjustColorsForFog = ACFF_MODULATE_ALPHA; + } + // premultiplied alpha + else if ( ( blendSrcBits == GLS_SRCBLEND_ONE ) && ( blendDstBits == GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA ) ) + { + pStage->adjustColorsForFog = ACFF_MODULATE_RGBA; + } else { + // we can't adjust this one correctly, so it won't be exactly correct in fog + } + + // don't screw with sort order if this is a portal or environment + if ( !shader.sort ) { + // see through item, like a grill or grate + if ( pStage->stateBits & GLS_DEPTHMASK_TRUE ) { + shader.sort = SS_SEE_THROUGH; + } else { + shader.sort = SS_BLEND0; + } + } + } + + stage++; + } + + // there are times when you will need to manually apply a sort to + // opaque alpha tested shaders that have later blend passes + if ( !shader.sort ) { + shader.sort = SS_OPAQUE; + } + + // + // if we are in r_vertexLight mode, never use a lightmap texture + // + if ( stage > 1 && ( (r_vertexLight->integer && !r_uiFullScreen->integer) || glConfig.hardwareType == GLHW_PERMEDIA2 ) ) { + VertexLightingCollapse(); + hasLightmapStage = false; + } + + // + // look for multitexture potential + // + stage = CollapseStagesToGLSL(); + + if ( shader.lightmapIndex >= 0 && !hasLightmapStage ) { + if (vertexLightmap) { + ri.Printf( PRINT_DEVELOPER, "WARNING: shader '%s' has VERTEX forced lightmap!\n", shader.name ); + } else { + ri.Printf( PRINT_DEVELOPER, "WARNING: shader '%s' has lightmap but no lightmap stage!\n", shader.name ); + // Don't set this, it will just add duplicate shaders to the hash + //shader.lightmapIndex = LIGHTMAP_NONE; + } + } + + + // + // compute number of passes + // + shader.numUnfoggedPasses = stage; + + // fogonly shaders don't have any normal passes + if (stage == 0 && !shader.isSky) + shader.sort = SS_FOG; + + // determine which stage iterator function is appropriate + ComputeStageIteratorFunc(); + + // determine which vertex attributes this shader needs + ComputeVertexAttribs(); + + return GeneratePermanentShader(); +} + +//======================================================================================== + +/* +==================== +FindShaderInShaderText + +Scans the combined text description of all the shader files for +the given shader name. + +return NULL if not found + +If found, it will return a valid shader +===================== +*/ +static char *FindShaderInShaderText( const char *shadername ) { + + char *token, *p; + + int i, hash; + + hash = generateHashValue(shadername, MAX_SHADERTEXT_HASH); + + if(shaderTextHashTable[hash]) + { + for (i = 0; shaderTextHashTable[hash][i]; i++) + { + p = shaderTextHashTable[hash][i]; + token = COM_ParseExt(&p, qtrue); + + if(!Q_stricmp(token, shadername)) + return p; + } + } + + p = s_shaderText; + + if ( !p ) { + return NULL; + } + + // look for label + while ( 1 ) { + token = COM_ParseExt( &p, qtrue ); + if ( token[0] == 0 ) { + break; + } + + if ( !Q_stricmp( token, shadername ) ) { + return p; + } + else { + // skip the definition + SkipBracedSection( &p, 0 ); + } + } + + return NULL; +} + + +/* +================== +R_FindShaderByName + +Will always return a valid shader, but it might be the +default shader if the real one can't be found. +================== +*/ +shader_t *R_FindShaderByName( const char *name ) { + char strippedName[MAX_QPATH]; + int hash; + shader_t *sh; + + if ( (name==NULL) || (name[0] == 0) ) { + return tr.defaultShader; + } + + COM_StripExtension(name, strippedName, sizeof(strippedName)); + + hash = generateHashValue(strippedName, FILE_HASH_SIZE); + + // + // see if the shader is already loaded + // + for (sh=hashTable[hash]; sh; sh=sh->next) { + // NOTE: if there was no shader or image available with the name strippedName + // then a default shader is created with lightmapIndex == LIGHTMAP_NONE, so we + // have to check all default shaders otherwise for every call to R_FindShader + // with that same strippedName a new default shader is created. + if (Q_stricmp(sh->name, strippedName) == 0) { + // match found + return sh; + } + } + + return tr.defaultShader; +} + + +/* +=============== +R_FindShader + +Will always return a valid shader, but it might be the +default shader if the real one can't be found. + +In the interest of not requiring an explicit shader text entry to +be defined for every single image used in the game, three default +shader behaviors can be auto-created for any image: + +If lightmapIndex == LIGHTMAP_NONE, then the image will have +dynamic diffuse lighting applied to it, as apropriate for most +entity skin surfaces. + +If lightmapIndex == LIGHTMAP_2D, then the image will be used +for 2D rendering unless an explicit shader is found + +If lightmapIndex == LIGHTMAP_BY_VERTEX, then the image will use +the vertex rgba modulate values, as apropriate for misc_model +pre-lit surfaces. + +Other lightmapIndex values will have a lightmap stage created +and src*dest blending applied with the texture, as apropriate for +most world construction surfaces. + +=============== +*/ +shader_t *R_FindShader( const char *name, int lightmapIndex, bool mipRawImage ) { + char strippedName[MAX_QPATH]; + int hash; + char *shaderText; + image_t *image; + shader_t *sh; + + if ( name[0] == 0 ) { + return tr.defaultShader; + } + + // use (fullbright) vertex lighting if the bsp file doesn't have + // lightmaps + if ( lightmapIndex >= 0 && lightmapIndex >= tr.numLightmaps ) { + lightmapIndex = LIGHTMAP_BY_VERTEX; + } else if ( lightmapIndex < LIGHTMAP_2D ) { + // negative lightmap indexes cause stray pointers (think tr.lightmaps[lightmapIndex]) + ri.Printf( PRINT_WARNING, "WARNING: shader '%s' has invalid lightmap index of %d\n", name, lightmapIndex ); + lightmapIndex = LIGHTMAP_BY_VERTEX; + } + + COM_StripExtension(name, strippedName, sizeof(strippedName)); + + hash = generateHashValue(strippedName, FILE_HASH_SIZE); + + // + // see if the shader is already loaded + // + for (sh = hashTable[hash]; sh; sh = sh->next) { + // NOTE: if there was no shader or image available with the name strippedName + // then a default shader is created with lightmapIndex == LIGHTMAP_NONE, so we + // have to check all default shaders otherwise for every call to R_FindShader + // with that same strippedName a new default shader is created. + if ( (sh->lightmapIndex == lightmapIndex || sh->defaultShader) && + !Q_stricmp(sh->name, strippedName)) { + // match found + return sh; + } + } + + InitShader( strippedName, lightmapIndex ); + + // + // attempt to define shader from an explicit parameter file + // + shaderText = FindShaderInShaderText( strippedName ); + if ( shaderText ) { + // enable this when building a pak file to get a global list + // of all explicit shaders + if ( r_printShaders->integer ) { + ri.Printf( PRINT_ALL, "*SHADER* %s\n", name ); + } + + if ( !ParseShader( &shaderText ) ) { + // had errors, so use default shader + shader.defaultShader = true; + } + sh = FinishShader(); + return sh; + } + + + // + // if not defined in the in-memory shader descriptions, + // look for a single supported image file + // + { + int/*imgFlags_t*/ flags; + + flags = IMGFLAG_NONE; + + if (mipRawImage) + { + flags |= IMGFLAG_MIPMAP | IMGFLAG_PICMIP; + + if (r_genNormalMaps->integer) + flags |= IMGFLAG_GENNORMALMAP; + } + else + { + flags |= IMGFLAG_CLAMPTOEDGE; + } + + image = R_FindImageFile( name, IMGTYPE_COLORALPHA, flags ); + if ( !image ) { + ri.Printf( PRINT_DEVELOPER, "Couldn't find image file for shader %s\n", name ); + shader.defaultShader = true; + return FinishShader(); + } + } + + // + // create the default shading commands + // + if ( shader.lightmapIndex == LIGHTMAP_NONE ) { + // dynamic colors at vertexes + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].rgbGen = CGEN_LIGHTING_DIFFUSE; + stages[0].stateBits = GLS_DEFAULT; + } else if ( shader.lightmapIndex == LIGHTMAP_BY_VERTEX ) { + // explicit colors at vertexes + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].rgbGen = CGEN_EXACT_VERTEX; + stages[0].alphaGen = AGEN_SKIP; + stages[0].stateBits = GLS_DEFAULT; + } else if ( shader.lightmapIndex == LIGHTMAP_2D ) { + // GUI elements + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].rgbGen = CGEN_VERTEX; + stages[0].alphaGen = AGEN_VERTEX; + stages[0].stateBits = GLS_DEPTHTEST_DISABLE | + GLS_SRCBLEND_SRC_ALPHA | + GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA; + } else if ( shader.lightmapIndex == LIGHTMAP_WHITEIMAGE ) { + // fullbright level + stages[0].bundle[0].image[0] = tr.whiteImage; + stages[0].active = true; + stages[0].rgbGen = CGEN_IDENTITY_LIGHTING; + stages[0].stateBits = GLS_DEFAULT; + + stages[1].bundle[0].image[0] = image; + stages[1].active = true; + stages[1].rgbGen = CGEN_IDENTITY; + stages[1].stateBits |= GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO; + } else { + // two pass lightmap + stages[0].bundle[0].image[0] = tr.lightmaps[shader.lightmapIndex]; + stages[0].bundle[0].isLightmap = true; + stages[0].active = true; + stages[0].rgbGen = CGEN_IDENTITY; // lightmaps are scaled on creation + // for identitylight + stages[0].stateBits = GLS_DEFAULT; + + stages[1].bundle[0].image[0] = image; + stages[1].active = true; + stages[1].rgbGen = CGEN_IDENTITY; + stages[1].stateBits |= GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO; + } + + return FinishShader(); +} + + +qhandle_t RE_RegisterShaderFromImage(const char *name, int lightmapIndex, image_t *image, bool mipRawImage) { + int hash; + shader_t *sh; + + hash = generateHashValue(name, FILE_HASH_SIZE); + + // probably not necessary since this function + // only gets called from tr_font.c with lightmapIndex == LIGHTMAP_2D + // but better safe than sorry. + if ( lightmapIndex >= tr.numLightmaps ) { + lightmapIndex = LIGHTMAP_WHITEIMAGE; + } + + // + // see if the shader is already loaded + // + for (sh=hashTable[hash]; sh; sh=sh->next) { + // NOTE: if there was no shader or image available with the name strippedName + // then a default shader is created with lightmapIndex == LIGHTMAP_NONE, so we + // have to check all default shaders otherwise for every call to R_FindShader + // with that same strippedName a new default shader is created. + if ( (sh->lightmapIndex == lightmapIndex || sh->defaultShader) && + // index by name + !Q_stricmp(sh->name, name)) { + // match found + return sh->index; + } + } + + InitShader( name, lightmapIndex ); + + // + // create the default shading commands + // + if ( shader.lightmapIndex == LIGHTMAP_NONE ) { + // dynamic colors at vertexes + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].rgbGen = CGEN_LIGHTING_DIFFUSE; + stages[0].stateBits = GLS_DEFAULT; + } else if ( shader.lightmapIndex == LIGHTMAP_BY_VERTEX ) { + // explicit colors at vertexes + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].rgbGen = CGEN_EXACT_VERTEX; + stages[0].alphaGen = AGEN_SKIP; + stages[0].stateBits = GLS_DEFAULT; + } else if ( shader.lightmapIndex == LIGHTMAP_2D ) { + // GUI elements + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].rgbGen = CGEN_VERTEX; + stages[0].alphaGen = AGEN_VERTEX; + stages[0].stateBits = GLS_DEPTHTEST_DISABLE | + GLS_SRCBLEND_SRC_ALPHA | + GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA; + } else if ( shader.lightmapIndex == LIGHTMAP_WHITEIMAGE ) { + // fullbright level + stages[0].bundle[0].image[0] = tr.whiteImage; + stages[0].active = true; + stages[0].rgbGen = CGEN_IDENTITY_LIGHTING; + stages[0].stateBits = GLS_DEFAULT; + + stages[1].bundle[0].image[0] = image; + stages[1].active = true; + stages[1].rgbGen = CGEN_IDENTITY; + stages[1].stateBits |= GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO; + } else { + // two pass lightmap + stages[0].bundle[0].image[0] = tr.lightmaps[shader.lightmapIndex]; + stages[0].bundle[0].isLightmap = true; + stages[0].active = true; + stages[0].rgbGen = CGEN_IDENTITY; // lightmaps are scaled on creation + // for identitylight + stages[0].stateBits = GLS_DEFAULT; + + stages[1].bundle[0].image[0] = image; + stages[1].active = true; + stages[1].rgbGen = CGEN_IDENTITY; + stages[1].stateBits |= GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO; + } + + sh = FinishShader(); + return sh->index; +} + + +/* +==================== +RE_RegisterShader + +This is the exported shader entry point for the rest of the system +It will always return an index that will be valid. + +This should really only be used for explicit shaders, because there is no +way to ask for different implicit lighting modes (vertex, lightmap, etc) +==================== +*/ +qhandle_t RE_RegisterShaderLightMap( const char *name, int lightmapIndex ) { + shader_t *sh; + + if ( strlen( name ) >= MAX_QPATH ) { + ri.Printf( PRINT_ALL, "Shader name exceeds MAX_QPATH\n" ); + return 0; + } + + sh = R_FindShader( name, lightmapIndex, true ); + + // we want to return 0 if the shader failed to + // load for some reason, but R_FindShader should + // still keep a name allocated for it, so if + // something calls RE_RegisterShader again with + // the same name, we don't try looking for it again + if ( sh->defaultShader ) { + return 0; + } + + return sh->index; +} + + +/* +==================== +RE_RegisterShader + +This is the exported shader entry point for the rest of the system +It will always return an index that will be valid. + +This should really only be used for explicit shaders, because there is no +way to ask for different implicit lighting modes (vertex, lightmap, etc) +==================== +*/ +qhandle_t RE_RegisterShader( const char *name ) { + shader_t *sh; + + if ( strlen( name ) >= MAX_QPATH ) { + ri.Printf( PRINT_ALL, "Shader name exceeds MAX_QPATH\n" ); + return 0; + } + + sh = R_FindShader( name, LIGHTMAP_2D, true ); + + // we want to return 0 if the shader failed to + // load for some reason, but R_FindShader should + // still keep a name allocated for it, so if + // something calls RE_RegisterShader again with + // the same name, we don't try looking for it again + if ( sh->defaultShader ) { + return 0; + } + + return sh->index; +} + + +/* +==================== +RE_RegisterShaderNoMip + +For menu graphics that should never be picmiped +==================== +*/ +qhandle_t RE_RegisterShaderNoMip( const char *name ) { + shader_t *sh; + + if ( strlen( name ) >= MAX_QPATH ) { + ri.Printf( PRINT_ALL, "Shader name exceeds MAX_QPATH\n" ); + return 0; + } + + sh = R_FindShader( name, LIGHTMAP_2D, false ); + + // we want to return 0 if the shader failed to + // load for some reason, but R_FindShader should + // still keep a name allocated for it, so if + // something calls RE_RegisterShader again with + // the same name, we don't try looking for it again + if ( sh->defaultShader ) { + return 0; + } + + return sh->index; +} + +/* +==================== +R_GetShaderByHandle + +When a handle is passed in by another module, this range checks +it and returns a valid (possibly default) shader_t to be used internally. +==================== +*/ +shader_t *R_GetShaderByHandle( qhandle_t hShader ) { + if ( hShader < 0 ) { + ri.Printf( PRINT_WARNING, "R_GetShaderByHandle: out of range hShader '%d'\n", hShader ); + return tr.defaultShader; + } + if ( hShader >= tr.numShaders ) { + ri.Printf( PRINT_WARNING, "R_GetShaderByHandle: out of range hShader '%d'\n", hShader ); + return tr.defaultShader; + } + return tr.shaders[hShader]; +} + +/* +=============== +R_ShaderList_f + +Dump information on all valid shaders to the console +A second parameter will cause it to print in sorted order +=============== +*/ +void R_ShaderList_f (void) { + int i; + int count; + shader_t *shader; + + ri.Printf (PRINT_ALL, "-----------------------\n"); + + count = 0; + for ( i = 0 ; i < tr.numShaders ; i++ ) { + if ( ri.Cmd_Argc() > 1 ) { + shader = tr.sortedShaders[i]; + } else { + shader = tr.shaders[i]; + } + + ri.Printf( PRINT_ALL, "%i ", shader->numUnfoggedPasses ); + + if (shader->lightmapIndex >= 0 ) { + ri.Printf (PRINT_ALL, "L "); + } else { + ri.Printf (PRINT_ALL, " "); + } + if ( shader->explicitlyDefined ) { + ri.Printf( PRINT_ALL, "E " ); + } else { + ri.Printf( PRINT_ALL, " " ); + } + + if ( shader->optimalStageIteratorFunc == RB_StageIteratorGeneric ) { + ri.Printf( PRINT_ALL, "gen " ); + } else if ( shader->optimalStageIteratorFunc == RB_StageIteratorSky ) { + ri.Printf( PRINT_ALL, "sky " ); + } else { + ri.Printf( PRINT_ALL, " " ); + } + + if ( shader->defaultShader ) { + ri.Printf (PRINT_ALL, ": %s (DEFAULTED)\n", shader->name); + } else { + ri.Printf (PRINT_ALL, ": %s\n", shader->name); + } + count++; + } + ri.Printf (PRINT_ALL, "%i total shaders\n", count); + ri.Printf (PRINT_ALL, "------------------\n"); +} + +/* +==================== +ScanAndLoadShaderFiles + +Finds and loads all .shader files, combining them into +a single large text block that can be scanned for shader names +===================== +*/ +#define MAX_SHADER_FILES 4096 +static void ScanAndLoadShaderFiles( void ) +{ + char **shaderFiles; + char *buffers[MAX_SHADER_FILES] = {NULL}; + char *p; + int numShaderFiles; + int i; + char *oldp, *token, *hashMem, *textEnd; + int shaderTextHashTableSizes[MAX_SHADERTEXT_HASH], hash, size; + char shaderName[MAX_QPATH]; + int shaderLine; + + long sum = 0, summand; + // scan for shader files + shaderFiles = ri.FS_ListFiles( "scripts", ".shader", &numShaderFiles ); + + if ( !shaderFiles || !numShaderFiles ) + { + ri.Printf( PRINT_WARNING, "WARNING: no shader files found\n" ); + return; + } + + if ( numShaderFiles > MAX_SHADER_FILES ) { + numShaderFiles = MAX_SHADER_FILES; + } + + // load and parse shader files + for ( i = 0; i < numShaderFiles; i++ ) + { + char filename[MAX_QPATH]; + + // look for a .mtr file first + { + char *ext; + Com_sprintf( filename, sizeof( filename ), "scripts/%s", shaderFiles[i] ); + if ( (ext = strrchr(filename, '.')) ) + { + strcpy(ext, ".mtr"); + } + + if ( ri.FS_ReadFile( filename, NULL ) <= 0 ) + { + Com_sprintf( filename, sizeof( filename ), "scripts/%s", shaderFiles[i] ); + } + } + + ri.Printf( PRINT_DEVELOPER, "...loading '%s'\n", filename ); + summand = ri.FS_ReadFile( filename, (void **)&buffers[i] ); + + if ( !buffers[i] ) + ri.Error( ERR_DROP, "Couldn't load %s", filename ); + + // Do a simple check on the shader structure in that file to make sure one bad shader file cannot fuck up all other shaders. + p = buffers[i]; + COM_BeginParseSession(filename); + while(1) + { + token = COM_ParseExt(&p, qtrue); + + if(!*token) + break; + + Q_strncpyz(shaderName, token, sizeof(shaderName)); + shaderLine = COM_GetCurrentParseLine(); + + token = COM_ParseExt(&p, qtrue); + if(token[0] != '{' || token[1] != '\0') + { + ri.Printf(PRINT_WARNING, "WARNING: Ignoring shader file %s. Shader \"%s\" on line %d missing opening brace", + filename, shaderName, shaderLine); + if (token[0]) + { + ri.Printf(PRINT_WARNING, " (found \"%s\" on line %d)", token, COM_GetCurrentParseLine()); + } + ri.Printf(PRINT_WARNING, ".\n"); + ri.FS_FreeFile(buffers[i]); + buffers[i] = NULL; + break; + } + + if(!SkipBracedSection(&p, 1)) + { + ri.Printf(PRINT_WARNING, "WARNING: Ignoring shader file %s. Shader \"%s\" on line %d missing closing brace.\n", + filename, shaderName, shaderLine); + ri.FS_FreeFile(buffers[i]); + buffers[i] = NULL; + break; + } + } + + + if (buffers[i]) + sum += summand; + } + + // build single large buffer + s_shaderText = (char*)ri.Hunk_Alloc( sum + numShaderFiles*2, h_low ); + s_shaderText[ 0 ] = '\0'; + textEnd = s_shaderText; + + // free in reverse order, so the temp files are all dumped + for ( i = numShaderFiles - 1; i >= 0 ; i-- ) + { + if ( !buffers[i] ) + continue; + + strcat( textEnd, buffers[i] ); + strcat( textEnd, "\n" ); + textEnd += strlen( textEnd ); + ri.FS_FreeFile( buffers[i] ); + } + + COM_Compress( s_shaderText ); + + // free up memory + ri.FS_FreeFileList( shaderFiles ); + + Com_Memset(shaderTextHashTableSizes, 0, sizeof(shaderTextHashTableSizes)); + size = 0; + + p = s_shaderText; + // look for shader names + while ( 1 ) { + token = COM_ParseExt( &p, qtrue ); + if ( token[0] == 0 ) { + break; + } + + hash = generateHashValue(token, MAX_SHADERTEXT_HASH); + shaderTextHashTableSizes[hash]++; + size++; + SkipBracedSection(&p, 0); + } + + size += MAX_SHADERTEXT_HASH; + + hashMem = (char*)ri.Hunk_Alloc( size * sizeof(char *), h_low ); + + for (i = 0; i < MAX_SHADERTEXT_HASH; i++) { + shaderTextHashTable[i] = (char **) hashMem; + hashMem = ((char *) hashMem) + ((shaderTextHashTableSizes[i] + 1) * sizeof(char *)); + } + + Com_Memset(shaderTextHashTableSizes, 0, sizeof(shaderTextHashTableSizes)); + + p = s_shaderText; + // look for shader names + while ( 1 ) { + oldp = p; + token = COM_ParseExt( &p, qtrue ); + if ( token[0] == 0 ) { + break; + } + + hash = generateHashValue(token, MAX_SHADERTEXT_HASH); + shaderTextHashTable[hash][shaderTextHashTableSizes[hash]++] = oldp; + + SkipBracedSection(&p, 0); + } + + return; + +} + + +/* +==================== +CreateInternalShaders +==================== +*/ +static void CreateInternalShaders( void ) { + tr.numShaders = 0; + + // init the default shader + InitShader( "<default>", LIGHTMAP_NONE ); + stages[0].bundle[0].image[0] = tr.defaultImage; + stages[0].active = true; + stages[0].stateBits = GLS_DEFAULT; + tr.defaultShader = FinishShader(); + + // shadow shader is just a marker + Q_strncpyz( shader.name, "<stencil shadow>", sizeof( shader.name ) ); + shader.sort = SS_STENCIL_SHADOW; + tr.shadowShader = FinishShader(); +} + +static void CreateExternalShaders( void ) { + tr.projectionShadowShader = R_FindShader( "projectionShadow", LIGHTMAP_NONE, true ); + tr.flareShader = R_FindShader( "flareShader", LIGHTMAP_NONE, true ); + + // Hack to make fogging work correctly on flares. Fog colors are calculated + // in tr_flare.c already. + if(!tr.flareShader->defaultShader) + { + int index; + + for(index = 0; index < tr.flareShader->numUnfoggedPasses; index++) + { + tr.flareShader->stages[index]->adjustColorsForFog = ACFF_NONE; + tr.flareShader->stages[index]->stateBits |= GLS_DEPTHTEST_DISABLE; + } + } + + tr.sunShader = R_FindShader( "sun", LIGHTMAP_NONE, true ); + + tr.sunFlareShader = R_FindShader( "gfx/2d/sunflare", LIGHTMAP_NONE, true); + + // HACK: if sunflare is missing, make one using the flare image or dlight image + if (tr.sunFlareShader->defaultShader) + { + image_t *image; + + if (!tr.flareShader->defaultShader && tr.flareShader->stages[0] && tr.flareShader->stages[0]->bundle[0].image[0]) + image = tr.flareShader->stages[0]->bundle[0].image[0]; + else + image = tr.dlightImage; + + InitShader( "gfx/2d/sunflare", LIGHTMAP_NONE ); + stages[0].bundle[0].image[0] = image; + stages[0].active = true; + stages[0].stateBits = GLS_DEFAULT; + tr.sunFlareShader = FinishShader(); + } + +} + +/* +================== +R_InitShaders +================== +*/ +void R_InitShaders( void ) { + ri.Printf( PRINT_ALL, "Initializing Shaders\n" ); + + Com_Memset(hashTable, 0, sizeof(hashTable)); + + CreateInternalShaders(); + + ScanAndLoadShaderFiles(); + + CreateExternalShaders(); +} |