/* =========================================================================== Doom 3 GPL Source Code Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code"). Doom 3 Source Code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Doom 3 Source Code is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Doom 3 Source Code. If not, see . In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below. If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA. =========================================================================== */ #include "../idlib/precompiled.h" #pragma hdrstop #include "tr_local.h" typedef enum { FPROG_BUMP_AND_LIGHT, FPROG_DIFFUSE_COLOR, FPROG_SPECULAR_COLOR, FPROG_DIFFUSE_AND_SPECULAR_COLOR, FPROG_NUM_FRAGMENT_PROGRAMS } fragmentProgram_t; GLuint fragmentDisplayListBase; // FPROG_NUM_FRAGMENT_PROGRAMS lists void RB_NV20_DependentSpecularPass( const drawInteraction_t *din ); void RB_NV20_DependentAmbientPass( void ); /* ========================================================================================= GENERAL INTERACTION RENDERING ========================================================================================= */ /* ==================== GL_SelectTextureNoClient ==================== */ void GL_SelectTextureNoClient( int unit ) { backEnd.glState.currenttmu = unit; qglActiveTextureARB( GL_TEXTURE0_ARB + unit ); RB_LogComment( "glActiveTextureARB( %i )\n", unit ); } /* ================== RB_NV20_BumpAndLightFragment ================== */ static void RB_NV20_BumpAndLightFragment( void ) { if ( r_useCombinerDisplayLists.GetBool() ) { qglCallList( fragmentDisplayListBase + FPROG_BUMP_AND_LIGHT ); return; } // program the nvidia register combiners qglCombinerParameteriNV( GL_NUM_GENERAL_COMBINERS_NV, 3 ); // stage 0 rgb performs the dot product // SPARE0 = TEXTURE0 dot TEXTURE1 qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE1_ARB, GL_EXPAND_NORMAL_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE0_ARB, GL_EXPAND_NORMAL_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_TRUE, GL_FALSE, GL_FALSE ); // stage 1 rgb multiplies texture 2 and 3 together // SPARE1 = TEXTURE2 * TEXTURE3 qglCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE2_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE3_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER1_NV, GL_RGB, GL_SPARE1_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 1 alpha does nohing // stage 2 color multiplies spare0 * spare 1 just for debugging // SPARE0 = SPARE0 * SPARE1 qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SPARE1_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER2_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 2 alpha multiples spare0 * spare 1 // SPARE0 = SPARE0 * SPARE1 qglCombinerInputNV( GL_COMBINER2_NV, GL_ALPHA, GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_BLUE ); qglCombinerInputNV( GL_COMBINER2_NV, GL_ALPHA, GL_VARIABLE_B_NV, GL_SPARE1_NV, GL_UNSIGNED_IDENTITY_NV, GL_BLUE ); qglCombinerOutputNV( GL_COMBINER2_NV, GL_ALPHA, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // final combiner qglFinalCombinerInputNV( GL_VARIABLE_D_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_A_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_B_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_G_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_ALPHA ); } /* ================== RB_NV20_DI_BumpAndLightPass We are going to write alpha as light falloff * ( bump dot light ) * lightProjection If the light isn't a monoLightShader, the lightProjection will be skipped, because it will have to be done on an itterated basis ================== */ static void RB_NV20_DI_BumpAndLightPass( const drawInteraction_t *din, bool monoLightShader ) { RB_LogComment( "---------- RB_NV_BumpAndLightPass ----------\n" ); GL_State( GLS_COLORMASK | GLS_DEPTHMASK | backEnd.depthFunc ); // texture 0 is the normalization cube map // GL_TEXTURE0_ARB will be the normalized vector // towards the light source #ifdef MACOS_X GL_SelectTexture( 0 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 0 ); #endif if ( din->ambientLight ) { globalImages->ambientNormalMap->Bind(); } else { globalImages->normalCubeMapImage->Bind(); } // texture 1 will be the per-surface bump map #ifdef MACOS_X GL_SelectTexture( 1 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 1 ); #endif din->bumpImage->Bind(); // texture 2 will be the light falloff texture #ifdef MACOS_X GL_SelectTexture( 2 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 2 ); #endif din->lightFalloffImage->Bind(); // texture 3 will be the light projection texture #ifdef MACOS_X GL_SelectTexture( 3 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 3 ); #endif if ( monoLightShader ) { din->lightImage->Bind(); } else { // if the projected texture is multi-colored, we // will need to do it in subsequent passes globalImages->whiteImage->Bind(); } // bind our "fragment program" RB_NV20_BumpAndLightFragment(); // draw it qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, VPROG_NV20_BUMP_AND_LIGHT ); RB_DrawElementsWithCounters( din->surf->geo ); } /* ================== RB_NV20_DiffuseColorFragment ================== */ static void RB_NV20_DiffuseColorFragment( void ) { if ( r_useCombinerDisplayLists.GetBool() ) { qglCallList( fragmentDisplayListBase + FPROG_DIFFUSE_COLOR ); return; } // program the nvidia register combiners qglCombinerParameteriNV( GL_NUM_GENERAL_COMBINERS_NV, 1 ); // stage 0 is free, so we always do the multiply of the vertex color // when the vertex color is inverted, qglCombinerInputNV(GL_VARIABLE_B_NV) will be changed qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE0_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_TEXTURE0_ARB, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); qglCombinerOutputNV( GL_COMBINER0_NV, GL_ALPHA, GL_DISCARD_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // for GL_CONSTANT_COLOR0_NV * TEXTURE0 * TEXTURE1 qglFinalCombinerInputNV( GL_VARIABLE_A_NV, GL_CONSTANT_COLOR0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_B_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_E_NV, GL_TEXTURE0_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_F_NV, GL_TEXTURE1_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_G_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_ALPHA ); } /* ================== RB_NV20_DI_DiffuseColorPass ================== */ static void RB_NV20_DI_DiffuseColorPass( const drawInteraction_t *din ) { RB_LogComment( "---------- RB_NV20_DiffuseColorPass ----------\n" ); GL_State( GLS_SRCBLEND_DST_ALPHA | GLS_DSTBLEND_ONE | GLS_DEPTHMASK | GLS_ALPHAMASK | backEnd.depthFunc ); // texture 0 will be the per-surface diffuse map #ifdef MACOS_X GL_SelectTexture( 0 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 0 ); #endif din->diffuseImage->Bind(); // texture 1 will be the light projected texture #ifdef MACOS_X GL_SelectTexture( 1 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 1 ); #endif din->lightImage->Bind(); // texture 2 is disabled #ifdef MACOS_X GL_SelectTexture( 2 ); qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 2 ); #endif globalImages->BindNull(); // texture 3 is disabled #ifdef MACOS_X GL_SelectTexture( 3 ); qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 3 ); #endif globalImages->BindNull(); // bind our "fragment program" RB_NV20_DiffuseColorFragment(); // override one parameter for inverted vertex color if ( din->vertexColor == SVC_INVERSE_MODULATE ) { qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_INVERT_NV, GL_RGB ); } // draw it qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, VPROG_NV20_DIFFUSE_COLOR ); RB_DrawElementsWithCounters( din->surf->geo ); } /* ================== RB_NV20_SpecularColorFragment ================== */ static void RB_NV20_SpecularColorFragment( void ) { if ( r_useCombinerDisplayLists.GetBool() ) { qglCallList( fragmentDisplayListBase + FPROG_SPECULAR_COLOR ); return; } // program the nvidia register combiners qglCombinerParameteriNV( GL_NUM_GENERAL_COMBINERS_NV, 4 ); // we want GL_CONSTANT_COLOR1_NV * PRIMARY_COLOR * TEXTURE2 * TEXTURE3 * specular( TEXTURE0 * TEXTURE1 ) // stage 0 rgb performs the dot product // GL_SPARE0_NV = ( TEXTURE0 dot TEXTURE1 - 0.5 ) * 2 // TEXTURE2 = TEXTURE2 * PRIMARY_COLOR // the scale and bias steepen the specular curve qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE1_ARB, GL_EXPAND_NORMAL_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE0_ARB, GL_EXPAND_NORMAL_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_SCALE_BY_TWO_NV, GL_BIAS_BY_NEGATIVE_ONE_HALF_NV, GL_TRUE, GL_FALSE, GL_FALSE ); // stage 0 alpha does nothing // stage 1 color takes bump * bump // GL_SPARE0_NV = ( GL_SPARE0_NV * GL_SPARE0_NV - 0.5 ) * 2 // the scale and bias steepen the specular curve qglCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER1_NV, GL_RGB, GL_SPARE0_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_SCALE_BY_TWO_NV, GL_BIAS_BY_NEGATIVE_ONE_HALF_NV, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 1 alpha does nothing // stage 2 color // GL_SPARE0_NV = GL_SPARE0_NV * TEXTURE3 // SECONDARY_COLOR = CONSTANT_COLOR * TEXTURE2 qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE3_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_C_NV, GL_CONSTANT_COLOR1_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_D_NV, GL_TEXTURE2_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER2_NV, GL_RGB, GL_SPARE0_NV, GL_SECONDARY_COLOR_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 2 alpha does nothing // stage 3 scales the texture by the vertex color qglCombinerInputNV( GL_COMBINER3_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER3_NV, GL_RGB, GL_VARIABLE_B_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER3_NV, GL_RGB, GL_SECONDARY_COLOR_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_NONE, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 3 alpha does nothing // final combiner = GL_SPARE0_NV * SECONDARY_COLOR + PRIMARY_COLOR * SECONDARY_COLOR qglFinalCombinerInputNV( GL_VARIABLE_A_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_B_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_D_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_E_NV, GL_SPARE0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_F_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_G_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_ALPHA ); } /* ================== RB_NV20_DI_SpecularColorPass ================== */ static void RB_NV20_DI_SpecularColorPass( const drawInteraction_t *din ) { RB_LogComment( "---------- RB_NV20_SpecularColorPass ----------\n" ); GL_State( GLS_SRCBLEND_DST_ALPHA | GLS_DSTBLEND_ONE | GLS_DEPTHMASK | GLS_ALPHAMASK | backEnd.depthFunc ); // texture 0 is the normalization cube map for the half angle #ifdef MACOS_X GL_SelectTexture( 0 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 0 ); #endif globalImages->normalCubeMapImage->Bind(); // texture 1 will be the per-surface bump map #ifdef MACOS_X GL_SelectTexture( 1 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 1 ); #endif din->bumpImage->Bind(); // texture 2 will be the per-surface specular map #ifdef MACOS_X GL_SelectTexture( 2 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 2 ); #endif din->specularImage->Bind(); // texture 3 will be the light projected texture #ifdef MACOS_X GL_SelectTexture( 3 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 3 ); #endif din->lightImage->Bind(); // bind our "fragment program" RB_NV20_SpecularColorFragment(); // override one parameter for inverted vertex color if ( din->vertexColor == SVC_INVERSE_MODULATE ) { qglCombinerInputNV( GL_COMBINER3_NV, GL_RGB, GL_VARIABLE_B_NV, GL_PRIMARY_COLOR_NV, GL_UNSIGNED_INVERT_NV, GL_RGB ); } // draw it qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, VPROG_NV20_SPECULAR_COLOR ); RB_DrawElementsWithCounters( din->surf->geo ); } /* ================== RB_NV20_DiffuseAndSpecularColorFragment ================== */ static void RB_NV20_DiffuseAndSpecularColorFragment( void ) { if ( r_useCombinerDisplayLists.GetBool() ) { qglCallList( fragmentDisplayListBase + FPROG_DIFFUSE_AND_SPECULAR_COLOR ); return; } // program the nvidia register combiners qglCombinerParameteriNV( GL_NUM_GENERAL_COMBINERS_NV, 3 ); // GL_CONSTANT_COLOR0_NV will be the diffuse color // GL_CONSTANT_COLOR1_NV will be the specular color // stage 0 rgb performs the dot product // GL_SECONDARY_COLOR_NV = ( TEXTURE0 dot TEXTURE1 - 0.5 ) * 2 // the scale and bias steepen the specular curve qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_A_NV, GL_TEXTURE1_ARB, GL_EXPAND_NORMAL_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER0_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE0_ARB, GL_EXPAND_NORMAL_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER0_NV, GL_RGB, GL_SECONDARY_COLOR_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_SCALE_BY_TWO_NV, GL_BIAS_BY_NEGATIVE_ONE_HALF_NV, GL_TRUE, GL_FALSE, GL_FALSE ); // stage 0 alpha does nothing // stage 1 color takes bump * bump // PRIMARY_COLOR = ( GL_SECONDARY_COLOR_NV * GL_SECONDARY_COLOR_NV - 0.5 ) * 2 // the scale and bias steepen the specular curve qglCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER1_NV, GL_RGB, GL_VARIABLE_B_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER1_NV, GL_RGB, GL_SECONDARY_COLOR_NV, GL_DISCARD_NV, GL_DISCARD_NV, GL_SCALE_BY_TWO_NV, GL_BIAS_BY_NEGATIVE_ONE_HALF_NV, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 1 alpha does nothing // stage 2 color // PRIMARY_COLOR = ( PRIMARY_COLOR * TEXTURE3 ) * 2 // SPARE0 = 1.0 * 1.0 (needed for final combiner) qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_A_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_B_NV, GL_TEXTURE3_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB ); qglCombinerInputNV( GL_COMBINER2_NV, GL_RGB, GL_VARIABLE_D_NV, GL_ZERO, GL_UNSIGNED_INVERT_NV, GL_RGB ); qglCombinerOutputNV( GL_COMBINER2_NV, GL_RGB, GL_SECONDARY_COLOR_NV, GL_SPARE0_NV, GL_DISCARD_NV, GL_SCALE_BY_TWO_NV, GL_NONE, GL_FALSE, GL_FALSE, GL_FALSE ); // stage 2 alpha does nothing // final combiner = TEXTURE2_ARB * CONSTANT_COLOR0_NV + PRIMARY_COLOR_NV * CONSTANT_COLOR1_NV // alpha = GL_ZERO qglFinalCombinerInputNV( GL_VARIABLE_A_NV, GL_CONSTANT_COLOR1_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_B_NV, GL_SECONDARY_COLOR_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_C_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_D_NV, GL_E_TIMES_F_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_E_NV, GL_TEXTURE2_ARB, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_F_NV, GL_CONSTANT_COLOR0_NV, GL_UNSIGNED_IDENTITY_NV, GL_RGB ); qglFinalCombinerInputNV( GL_VARIABLE_G_NV, GL_ZERO, GL_UNSIGNED_IDENTITY_NV, GL_ALPHA ); } /* ================== RB_NV20_DI_DiffuseAndSpecularColorPass ================== */ static void RB_NV20_DI_DiffuseAndSpecularColorPass( const drawInteraction_t *din ) { RB_LogComment( "---------- RB_NV20_DI_DiffuseAndSpecularColorPass ----------\n" ); GL_State( GLS_SRCBLEND_DST_ALPHA | GLS_DSTBLEND_ONE | GLS_DEPTHMASK | backEnd.depthFunc ); // texture 0 is the normalization cube map for the half angle // still bound from RB_NV_BumpAndLightPass // GL_SelectTextureNoClient( 0 ); // GL_Bind( tr.normalCubeMapImage ); // texture 1 is the per-surface bump map // still bound from RB_NV_BumpAndLightPass // GL_SelectTextureNoClient( 1 ); // GL_Bind( din->bumpImage ); // texture 2 is the per-surface diffuse map #ifdef MACOS_X GL_SelectTexture( 2 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 2 ); #endif din->diffuseImage->Bind(); // texture 3 is the per-surface specular map #ifdef MACOS_X GL_SelectTexture( 3 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 3 ); #endif din->specularImage->Bind(); // bind our "fragment program" RB_NV20_DiffuseAndSpecularColorFragment(); // draw it qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, VPROG_NV20_DIFFUSE_AND_SPECULAR_COLOR ); RB_DrawElementsWithCounters( din->surf->geo ); } /* ================== RB_NV20_DrawInteraction ================== */ static void RB_NV20_DrawInteraction( const drawInteraction_t *din ) { const drawSurf_t *surf = din->surf; // load all the vertex program parameters qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_LIGHT_ORIGIN, din->localLightOrigin.ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_VIEW_ORIGIN, din->localViewOrigin.ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_LIGHT_PROJECT_S, din->lightProjection[0].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_LIGHT_PROJECT_T, din->lightProjection[1].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_LIGHT_PROJECT_Q, din->lightProjection[2].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_LIGHT_FALLOFF_S, din->lightProjection[3].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_BUMP_MATRIX_S, din->bumpMatrix[0].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_BUMP_MATRIX_T, din->bumpMatrix[1].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_DIFFUSE_MATRIX_S, din->diffuseMatrix[0].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_DIFFUSE_MATRIX_T, din->diffuseMatrix[1].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_SPECULAR_MATRIX_S, din->specularMatrix[0].ToFloatPtr() ); qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_SPECULAR_MATRIX_T, din->specularMatrix[1].ToFloatPtr() ); // set the constant colors qglCombinerParameterfvNV( GL_CONSTANT_COLOR0_NV, din->diffuseColor.ToFloatPtr() ); qglCombinerParameterfvNV( GL_CONSTANT_COLOR1_NV, din->specularColor.ToFloatPtr() ); // vertex color passes should be pretty rare (cross-faded bump map surfaces), so always // run them down as three-passes if ( din->vertexColor != SVC_IGNORE ) { qglEnableClientState( GL_COLOR_ARRAY ); RB_NV20_DI_BumpAndLightPass( din, false ); RB_NV20_DI_DiffuseColorPass( din ); RB_NV20_DI_SpecularColorPass( din ); qglDisableClientState( GL_COLOR_ARRAY ); return; } qglColor3f( 1, 1, 1 ); // on an ideal card, we would now just bind the textures and call a // single pass vertex / fragment program, but // on NV20, we need to decide which single / dual / tripple pass set of programs to use // ambient light could be done as a single pass if we want to optimize for it // monochrome light is two passes int internalFormat = din->lightImage->internalFormat; if ( ( r_useNV20MonoLights.GetInteger() == 2 ) || ( din->lightImage->isMonochrome && r_useNV20MonoLights.GetInteger() ) ) { // do a two-pass rendering RB_NV20_DI_BumpAndLightPass( din, true ); RB_NV20_DI_DiffuseAndSpecularColorPass( din ); } else { // general case is three passes // ( bump dot lightDir ) * lightFalloff // diffuse * lightProject // specular * ( bump dot halfAngle extended ) * lightProject RB_NV20_DI_BumpAndLightPass( din, false ); RB_NV20_DI_DiffuseColorPass( din ); RB_NV20_DI_SpecularColorPass( din ); } } /* ============= RB_NV20_CreateDrawInteractions ============= */ static void RB_NV20_CreateDrawInteractions( const drawSurf_t *surf ) { if ( !surf ) { return; } qglEnable( GL_VERTEX_PROGRAM_ARB ); qglEnable( GL_REGISTER_COMBINERS_NV ); #ifdef MACOS_X GL_SelectTexture(0); qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); #else qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); qglEnableVertexAttribArrayARB( 8 ); qglEnableVertexAttribArrayARB( 9 ); qglEnableVertexAttribArrayARB( 10 ); qglEnableVertexAttribArrayARB( 11 ); #endif for ( ; surf ; surf=surf->nextOnLight ) { // set the vertex pointers idDrawVert *ac = (idDrawVert *)vertexCache.Position( surf->geo->ambientCache ); qglColorPointer( 4, GL_UNSIGNED_BYTE, sizeof( idDrawVert ), ac->color ); #ifdef MACOS_X GL_SelectTexture( 0 ); qglTexCoordPointer( 2, GL_FLOAT, sizeof( idDrawVert ), ac->st.ToFloatPtr() ); GL_SelectTexture( 1 ); qglTexCoordPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->tangents[0].ToFloatPtr() ); GL_SelectTexture( 2 ); qglTexCoordPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->tangents[1].ToFloatPtr() ); GL_SelectTexture( 3 ); qglTexCoordPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->normal.ToFloatPtr() ); GL_SelectTexture( 0 ); #else qglVertexAttribPointerARB( 11, 3, GL_FLOAT, false, sizeof( idDrawVert ), ac->normal.ToFloatPtr() ); qglVertexAttribPointerARB( 10, 3, GL_FLOAT, false, sizeof( idDrawVert ), ac->tangents[1].ToFloatPtr() ); qglVertexAttribPointerARB( 9, 3, GL_FLOAT, false, sizeof( idDrawVert ), ac->tangents[0].ToFloatPtr() ); qglVertexAttribPointerARB( 8, 2, GL_FLOAT, false, sizeof( idDrawVert ), ac->st.ToFloatPtr() ); #endif qglVertexPointer( 3, GL_FLOAT, sizeof( idDrawVert ), ac->xyz.ToFloatPtr() ); RB_CreateSingleDrawInteractions( surf, RB_NV20_DrawInteraction ); } #ifndef MACOS_X qglDisableVertexAttribArrayARB( 8 ); qglDisableVertexAttribArrayARB( 9 ); qglDisableVertexAttribArrayARB( 10 ); qglDisableVertexAttribArrayARB( 11 ); #endif // disable features #ifdef MACOS_X GL_SelectTexture( 3 ); globalImages->BindNull(); qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); GL_SelectTexture( 2 ); globalImages->BindNull(); qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); GL_SelectTexture( 1 ); globalImages->BindNull(); qglDisableClientState( GL_TEXTURE_COORD_ARRAY ); #else GL_SelectTextureNoClient( 3 ); globalImages->BindNull(); GL_SelectTextureNoClient( 2 ); globalImages->BindNull(); GL_SelectTextureNoClient( 1 ); globalImages->BindNull(); #endif backEnd.glState.currenttmu = -1; GL_SelectTexture( 0 ); qglEnableClientState( GL_TEXTURE_COORD_ARRAY ); qglDisable( GL_VERTEX_PROGRAM_ARB ); qglDisable( GL_REGISTER_COMBINERS_NV ); } //====================================================================================== /* ================== RB_NV20_DrawInteractions ================== */ void RB_NV20_DrawInteractions( void ) { viewLight_t *vLight; // // for each light, perform adding and shadowing // for ( vLight = backEnd.viewDef->viewLights ; vLight ; vLight = vLight->next ) { // do fogging later if ( vLight->lightShader->IsFogLight() ) { continue; } if ( vLight->lightShader->IsBlendLight() ) { continue; } if ( !vLight->localInteractions && !vLight->globalInteractions && !vLight->translucentInteractions ) { continue; } backEnd.vLight = vLight; RB_LogComment( "---------- RB_RenderViewLight 0x%p ----------\n", vLight ); // clear the stencil buffer if needed if ( vLight->globalShadows || vLight->localShadows ) { backEnd.currentScissor = vLight->scissorRect; if ( r_useScissor.GetBool() ) { qglScissor( backEnd.viewDef->viewport.x1 + backEnd.currentScissor.x1, backEnd.viewDef->viewport.y1 + backEnd.currentScissor.y1, backEnd.currentScissor.x2 + 1 - backEnd.currentScissor.x1, backEnd.currentScissor.y2 + 1 - backEnd.currentScissor.y1 ); } qglClear( GL_STENCIL_BUFFER_BIT ); } else { // no shadows, so no need to read or write the stencil buffer // we might in theory want to use GL_ALWAYS instead of disabling // completely, to satisfy the invarience rules qglStencilFunc( GL_ALWAYS, 128, 255 ); } backEnd.depthFunc = GLS_DEPTHFUNC_EQUAL; if ( r_useShadowVertexProgram.GetBool() ) { qglEnable( GL_VERTEX_PROGRAM_ARB ); qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, VPROG_STENCIL_SHADOW ); RB_StencilShadowPass( vLight->globalShadows ); RB_NV20_CreateDrawInteractions( vLight->localInteractions ); qglEnable( GL_VERTEX_PROGRAM_ARB ); qglBindProgramARB( GL_VERTEX_PROGRAM_ARB, VPROG_STENCIL_SHADOW ); RB_StencilShadowPass( vLight->localShadows ); RB_NV20_CreateDrawInteractions( vLight->globalInteractions ); qglDisable( GL_VERTEX_PROGRAM_ARB ); // if there weren't any globalInteractions, it would have stayed on } else { RB_StencilShadowPass( vLight->globalShadows ); RB_NV20_CreateDrawInteractions( vLight->localInteractions ); RB_StencilShadowPass( vLight->localShadows ); RB_NV20_CreateDrawInteractions( vLight->globalInteractions ); } // translucent surfaces never get stencil shadowed if ( r_skipTranslucent.GetBool() ) { continue; } qglStencilFunc( GL_ALWAYS, 128, 255 ); backEnd.depthFunc = GLS_DEPTHFUNC_LESS; RB_NV20_CreateDrawInteractions( vLight->translucentInteractions ); backEnd.depthFunc = GLS_DEPTHFUNC_EQUAL; } } //======================================================================= /* ================== R_NV20_Init ================== */ void R_NV20_Init( void ) { glConfig.allowNV20Path = false; common->Printf( "---------- R_NV20_Init ----------\n" ); if ( !glConfig.registerCombinersAvailable || !glConfig.ARBVertexProgramAvailable || glConfig.maxTextureUnits < 4 ) { common->Printf( "Not available.\n" ); return; } GL_CheckErrors(); // create our "fragment program" display lists fragmentDisplayListBase = qglGenLists( FPROG_NUM_FRAGMENT_PROGRAMS ); // force them to issue commands to build the list bool temp = r_useCombinerDisplayLists.GetBool(); r_useCombinerDisplayLists.SetBool( false ); qglNewList( fragmentDisplayListBase + FPROG_BUMP_AND_LIGHT, GL_COMPILE ); RB_NV20_BumpAndLightFragment(); qglEndList(); qglNewList( fragmentDisplayListBase + FPROG_DIFFUSE_COLOR, GL_COMPILE ); RB_NV20_DiffuseColorFragment(); qglEndList(); qglNewList( fragmentDisplayListBase + FPROG_SPECULAR_COLOR, GL_COMPILE ); RB_NV20_SpecularColorFragment(); qglEndList(); qglNewList( fragmentDisplayListBase + FPROG_DIFFUSE_AND_SPECULAR_COLOR, GL_COMPILE ); RB_NV20_DiffuseAndSpecularColorFragment(); qglEndList(); r_useCombinerDisplayLists.SetBool( temp ); common->Printf( "---------------------------------\n" ); glConfig.allowNV20Path = true; }