/* =========================================================================== Copyright (C) 1999-2005 Id Software, Inc. This file is part of Quake III Arena source code. Quake III Arena source code is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Quake III Arena source code is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Quake III Arena source code; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA =========================================================================== */ #include "tr_local.h" backEndData_t *backEndData[SMP_FRAMES]; backEndState_t backEnd; static float s_flipMatrix[16] = { // convert from our coordinate system (looking down X) // to OpenGL's coordinate system (looking down -Z) 0, 0, -1, 0, -1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1 }; /* ** GL_Bind */ void GL_Bind( image_t *image ) { int texnum; if ( !image ) { ri.Printf( PRINT_WARNING, "GL_Bind: NULL image\n" ); texnum = tr.defaultImage->texnum; } else { texnum = image->texnum; } if ( r_nobind->integer && tr.dlightImage ) { // performance evaluation option texnum = tr.dlightImage->texnum; } if ( glState.currenttextures[glState.currenttmu] != texnum ) { image->frameUsed = tr.frameCount; glState.currenttextures[glState.currenttmu] = texnum; qglBindTexture (GL_TEXTURE_2D, texnum); } } /* ** GL_SelectTexture */ void GL_SelectTexture( int unit ) { if ( glState.currenttmu == unit ) { return; } if ( unit == 0 ) { qglActiveTextureARB( GL_TEXTURE0_ARB ); GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE0_ARB )\n" ); qglClientActiveTextureARB( GL_TEXTURE0_ARB ); GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE0_ARB )\n" ); } else if ( unit == 1 ) { qglActiveTextureARB( GL_TEXTURE1_ARB ); GLimp_LogComment( "glActiveTextureARB( GL_TEXTURE1_ARB )\n" ); qglClientActiveTextureARB( GL_TEXTURE1_ARB ); GLimp_LogComment( "glClientActiveTextureARB( GL_TEXTURE1_ARB )\n" ); } else { ri.Error( ERR_DROP, "GL_SelectTexture: unit = %i", unit ); } glState.currenttmu = unit; } /* ** GL_BindMultitexture */ void GL_BindMultitexture( image_t *image0, GLuint env0, image_t *image1, GLuint env1 ) { int texnum0, texnum1; texnum0 = image0->texnum; texnum1 = image1->texnum; if ( r_nobind->integer && tr.dlightImage ) { // performance evaluation option texnum0 = texnum1 = tr.dlightImage->texnum; } if ( glState.currenttextures[1] != texnum1 ) { GL_SelectTexture( 1 ); image1->frameUsed = tr.frameCount; glState.currenttextures[1] = texnum1; qglBindTexture( GL_TEXTURE_2D, texnum1 ); } if ( glState.currenttextures[0] != texnum0 ) { GL_SelectTexture( 0 ); image0->frameUsed = tr.frameCount; glState.currenttextures[0] = texnum0; qglBindTexture( GL_TEXTURE_2D, texnum0 ); } } /* ** GL_Cull */ void GL_Cull( int cullType ) { if ( glState.faceCulling == cullType ) { return; } glState.faceCulling = cullType; if ( cullType == CT_TWO_SIDED ) { qglDisable( GL_CULL_FACE ); } else { qglEnable( GL_CULL_FACE ); if ( cullType == CT_BACK_SIDED ) { if ( backEnd.viewParms.isMirror ) { qglCullFace( GL_FRONT ); } else { qglCullFace( GL_BACK ); } } else { if ( backEnd.viewParms.isMirror ) { qglCullFace( GL_BACK ); } else { qglCullFace( GL_FRONT ); } } } } /* ** GL_TexEnv */ void GL_TexEnv( int env ) { if ( env == glState.texEnv[glState.currenttmu] ) { return; } glState.texEnv[glState.currenttmu] = env; switch ( env ) { case GL_MODULATE: qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); break; case GL_REPLACE: qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE ); break; case GL_DECAL: qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL ); break; case GL_ADD: qglTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD ); break; default: ri.Error( ERR_DROP, "GL_TexEnv: invalid env '%d' passed\n", env ); break; } } /* ** GL_State ** ** This routine is responsible for setting the most commonly changed state ** in Q3. */ void GL_State( unsigned long stateBits ) { unsigned long diff = stateBits ^ glState.glStateBits; if ( !diff ) { return; } // // check depthFunc bits // if ( diff & GLS_DEPTHFUNC_EQUAL ) { if ( stateBits & GLS_DEPTHFUNC_EQUAL ) { qglDepthFunc( GL_EQUAL ); } else { qglDepthFunc( GL_LEQUAL ); } } // // check blend bits // if ( diff & ( GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS ) ) { GLenum srcFactor, dstFactor; if ( stateBits & ( GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS ) ) { switch ( stateBits & GLS_SRCBLEND_BITS ) { case GLS_SRCBLEND_ZERO: srcFactor = GL_ZERO; break; case GLS_SRCBLEND_ONE: srcFactor = GL_ONE; break; case GLS_SRCBLEND_DST_COLOR: srcFactor = GL_DST_COLOR; break; case GLS_SRCBLEND_ONE_MINUS_DST_COLOR: srcFactor = GL_ONE_MINUS_DST_COLOR; break; case GLS_SRCBLEND_SRC_ALPHA: srcFactor = GL_SRC_ALPHA; break; case GLS_SRCBLEND_ONE_MINUS_SRC_ALPHA: srcFactor = GL_ONE_MINUS_SRC_ALPHA; break; case GLS_SRCBLEND_DST_ALPHA: srcFactor = GL_DST_ALPHA; break; case GLS_SRCBLEND_ONE_MINUS_DST_ALPHA: srcFactor = GL_ONE_MINUS_DST_ALPHA; break; case GLS_SRCBLEND_ALPHA_SATURATE: srcFactor = GL_SRC_ALPHA_SATURATE; break; default: srcFactor = GL_ONE; // to get warning to shut up ri.Error( ERR_DROP, "GL_State: invalid src blend state bits\n" ); break; } switch ( stateBits & GLS_DSTBLEND_BITS ) { case GLS_DSTBLEND_ZERO: dstFactor = GL_ZERO; break; case GLS_DSTBLEND_ONE: dstFactor = GL_ONE; break; case GLS_DSTBLEND_SRC_COLOR: dstFactor = GL_SRC_COLOR; break; case GLS_DSTBLEND_ONE_MINUS_SRC_COLOR: dstFactor = GL_ONE_MINUS_SRC_COLOR; break; case GLS_DSTBLEND_SRC_ALPHA: dstFactor = GL_SRC_ALPHA; break; case GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA: dstFactor = GL_ONE_MINUS_SRC_ALPHA; break; case GLS_DSTBLEND_DST_ALPHA: dstFactor = GL_DST_ALPHA; break; case GLS_DSTBLEND_ONE_MINUS_DST_ALPHA: dstFactor = GL_ONE_MINUS_DST_ALPHA; break; default: dstFactor = GL_ONE; // to get warning to shut up ri.Error( ERR_DROP, "GL_State: invalid dst blend state bits\n" ); break; } qglEnable( GL_BLEND ); qglBlendFunc( srcFactor, dstFactor ); } else { qglDisable( GL_BLEND ); } } // // check depthmask // if ( diff & GLS_DEPTHMASK_TRUE ) { if ( stateBits & GLS_DEPTHMASK_TRUE ) { qglDepthMask( GL_TRUE ); } else { qglDepthMask( GL_FALSE ); } } // // fill/line mode // if ( diff & GLS_POLYMODE_LINE ) { if ( stateBits & GLS_POLYMODE_LINE ) { qglPolygonMode( GL_FRONT_AND_BACK, GL_LINE ); } else { qglPolygonMode( GL_FRONT_AND_BACK, GL_FILL ); } } // // depthtest // if ( diff & GLS_DEPTHTEST_DISABLE ) { if ( stateBits & GLS_DEPTHTEST_DISABLE ) { qglDisable( GL_DEPTH_TEST ); } else { qglEnable( GL_DEPTH_TEST ); } } // // alpha test // if ( diff & GLS_ATEST_BITS ) { switch ( stateBits & GLS_ATEST_BITS ) { case 0: qglDisable( GL_ALPHA_TEST ); break; case GLS_ATEST_GT_0: qglEnable( GL_ALPHA_TEST ); qglAlphaFunc( GL_GREATER, 0.0f ); break; case GLS_ATEST_LT_80: qglEnable( GL_ALPHA_TEST ); qglAlphaFunc( GL_LESS, 0.5f ); break; case GLS_ATEST_GE_80: qglEnable( GL_ALPHA_TEST ); qglAlphaFunc( GL_GEQUAL, 0.5f ); break; default: assert( 0 ); break; } } glState.glStateBits = stateBits; } /* ================ RB_Hyperspace A player has predicted a teleport, but hasn't arrived yet ================ */ static void RB_Hyperspace( void ) { float c; if ( !backEnd.isHyperspace ) { // do initialization shit } c = ( backEnd.refdef.time & 255 ) / 255.0f; qglClearColor( c, c, c, 1 ); qglClear( GL_COLOR_BUFFER_BIT ); backEnd.isHyperspace = qtrue; } static void SetViewportAndScissor( void ) { qglMatrixMode(GL_PROJECTION); qglLoadMatrixf( backEnd.viewParms.projectionMatrix ); qglMatrixMode(GL_MODELVIEW); // set the window clipping qglViewport( backEnd.viewParms.viewportX, backEnd.viewParms.viewportY, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight ); qglScissor( backEnd.viewParms.viewportX, backEnd.viewParms.viewportY, backEnd.viewParms.viewportWidth, backEnd.viewParms.viewportHeight ); } /* ================= RB_BeginDrawingView Any mirrored or portaled views have already been drawn, so prepare to actually render the visible surfaces for this view ================= */ void RB_BeginDrawingView (void) { int clearBits = 0; // sync with gl if needed if ( r_finish->integer == 1 && !glState.finishCalled ) { qglFinish (); glState.finishCalled = qtrue; } if ( r_finish->integer == 0 ) { glState.finishCalled = qtrue; } // we will need to change the projection matrix before drawing // 2D images again backEnd.projection2D = qfalse; // // set the modelview matrix for the viewer // SetViewportAndScissor(); // ensures that depth writes are enabled for the depth clear GL_State( GLS_DEFAULT ); // clear relevant buffers clearBits = GL_DEPTH_BUFFER_BIT; if ( r_measureOverdraw->integer || r_shadows->integer == 2 ) { clearBits |= GL_STENCIL_BUFFER_BIT; } if ( r_fastsky->integer && !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) ) { clearBits |= GL_COLOR_BUFFER_BIT; // FIXME: only if sky shaders have been used #ifdef _DEBUG qglClearColor( 0.8f, 0.7f, 0.4f, 1.0f ); // FIXME: get color of sky #else qglClearColor( 0.0f, 0.0f, 0.0f, 1.0f ); // FIXME: get color of sky #endif } qglClear( clearBits ); if ( ( backEnd.refdef.rdflags & RDF_HYPERSPACE ) ) { RB_Hyperspace(); return; } else { backEnd.isHyperspace = qfalse; } glState.faceCulling = -1; // force face culling to set next time // we will only draw a sun if there was sky rendered in this view backEnd.skyRenderedThisView = qfalse; // clip to the plane of the portal if ( backEnd.viewParms.isPortal ) { float plane[4]; double plane2[4]; plane[0] = backEnd.viewParms.portalPlane.normal[0]; plane[1] = backEnd.viewParms.portalPlane.normal[1]; plane[2] = backEnd.viewParms.portalPlane.normal[2]; plane[3] = backEnd.viewParms.portalPlane.dist; plane2[0] = DotProduct (backEnd.viewParms.or.axis[0], plane); plane2[1] = DotProduct (backEnd.viewParms.or.axis[1], plane); plane2[2] = DotProduct (backEnd.viewParms.or.axis[2], plane); plane2[3] = DotProduct (plane, backEnd.viewParms.or.origin) - plane[3]; qglLoadMatrixf( s_flipMatrix ); qglClipPlane (GL_CLIP_PLANE0, plane2); qglEnable (GL_CLIP_PLANE0); } else { qglDisable (GL_CLIP_PLANE0); } } #define MAC_EVENT_PUMP_MSEC 5 /* ================== RB_RenderDrawSurfList ================== */ void RB_RenderDrawSurfList( drawSurf_t *drawSurfs, int numDrawSurfs ) { shader_t *shader, *oldShader; int fogNum, oldFogNum; int entityNum, oldEntityNum; int dlighted, oldDlighted; qboolean depthRange, oldDepthRange; int i; drawSurf_t *drawSurf; int oldSort; float originalTime; #ifdef __MACOS__ int macEventTime; Sys_PumpEvents(); // crutch up the mac's limited buffer queue size // we don't want to pump the event loop too often and waste time, so // we are going to check every shader change macEventTime = ri.Milliseconds() + MAC_EVENT_PUMP_MSEC; #endif // save original time for entity shader offsets originalTime = backEnd.refdef.floatTime; // clear the z buffer, set the modelview, etc RB_BeginDrawingView (); // draw everything oldEntityNum = -1; backEnd.currentEntity = &tr.worldEntity; oldShader = NULL; oldFogNum = -1; oldDepthRange = qfalse; oldDlighted = qfalse; oldSort = -1; depthRange = qfalse; backEnd.pc.c_surfaces += numDrawSurfs; for (i = 0, drawSurf = drawSurfs ; i < numDrawSurfs ; i++, drawSurf++) { if ( drawSurf->sort == oldSort ) { // fast path, same as previous sort rb_surfaceTable[ *drawSurf->surface ]( drawSurf->surface ); continue; } oldSort = drawSurf->sort; R_DecomposeSort( drawSurf->sort, &entityNum, &shader, &fogNum, &dlighted ); // // change the tess parameters if needed // a "entityMergable" shader is a shader that can have surfaces from seperate // entities merged into a single batch, like smoke and blood puff sprites if (shader != oldShader || fogNum != oldFogNum || dlighted != oldDlighted || ( entityNum != oldEntityNum && !shader->entityMergable ) ) { if (oldShader != NULL) { #ifdef __MACOS__ // crutch up the mac's limited buffer queue size int t; t = ri.Milliseconds(); if ( t > macEventTime ) { macEventTime = t + MAC_EVENT_PUMP_MSEC; Sys_PumpEvents(); } #endif RB_EndSurface(); } RB_BeginSurface( shader, fogNum ); oldShader = shader; oldFogNum = fogNum; oldDlighted = dlighted; } // // change the modelview matrix if needed // if ( entityNum != oldEntityNum ) { depthRange = qfalse; if ( entityNum != ENTITYNUM_WORLD ) { backEnd.currentEntity = &backEnd.refdef.entities[entityNum]; backEnd.refdef.floatTime = originalTime - backEnd.currentEntity->e.shaderTime; // we have to reset the shaderTime as well otherwise image animations start // from the wrong frame tess.shaderTime = backEnd.refdef.floatTime - tess.shader->timeOffset; // set up the transformation matrix R_RotateForEntity( backEnd.currentEntity, &backEnd.viewParms, &backEnd.or ); // set up the dynamic lighting if needed if ( backEnd.currentEntity->needDlights ) { R_TransformDlights( backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.or ); } if ( backEnd.currentEntity->e.renderfx & RF_DEPTHHACK ) { // hack the depth range to prevent view model from poking into walls depthRange = qtrue; } } else { backEnd.currentEntity = &tr.worldEntity; backEnd.refdef.floatTime = originalTime; backEnd.or = backEnd.viewParms.world; // we have to reset the shaderTime as well otherwise image animations on // the world (like water) continue with the wrong frame tess.shaderTime = backEnd.refdef.floatTime - tess.shader->timeOffset; R_TransformDlights( backEnd.refdef.num_dlights, backEnd.refdef.dlights, &backEnd.or ); } qglLoadMatrixf( backEnd.or.modelMatrix ); // // change depthrange if needed // if ( oldDepthRange != depthRange ) { if ( depthRange ) { qglDepthRange (0, 0.3); } else { qglDepthRange (0, 1); } oldDepthRange = depthRange; } oldEntityNum = entityNum; } // add the triangles for this surface rb_surfaceTable[ *drawSurf->surface ]( drawSurf->surface ); } backEnd.refdef.floatTime = originalTime; // draw the contents of the last shader batch if (oldShader != NULL) { RB_EndSurface(); } // go back to the world modelview matrix qglLoadMatrixf( backEnd.viewParms.world.modelMatrix ); if ( depthRange ) { qglDepthRange (0, 1); } #if 0 RB_DrawSun(); #endif // darken down any stencil shadows RB_ShadowFinish(); // add light flares on lights that aren't obscured RB_RenderFlares(); #ifdef __MACOS__ Sys_PumpEvents(); // crutch up the mac's limited buffer queue size #endif } /* ============================================================================ RENDER BACK END THREAD FUNCTIONS ============================================================================ */ /* ================ RB_SetGL2D ================ */ void RB_SetGL2D (void) { backEnd.projection2D = qtrue; // set 2D virtual screen size qglViewport( 0, 0, glConfig.vidWidth, glConfig.vidHeight ); qglScissor( 0, 0, glConfig.vidWidth, glConfig.vidHeight ); qglMatrixMode(GL_PROJECTION); qglLoadIdentity (); qglOrtho (0, glConfig.vidWidth, glConfig.vidHeight, 0, 0, 1); qglMatrixMode(GL_MODELVIEW); qglLoadIdentity (); GL_State( GLS_DEPTHTEST_DISABLE | GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA ); qglDisable( GL_CULL_FACE ); qglDisable( GL_CLIP_PLANE0 ); // set time for 2D shaders backEnd.refdef.time = ri.Milliseconds(); backEnd.refdef.floatTime = backEnd.refdef.time * 0.001f; } /* ============= RE_StretchRaw FIXME: not exactly backend Stretches a raw 32 bit power of 2 bitmap image over the given screen rectangle. Used for cinematics. ============= */ void RE_StretchRaw (int x, int y, int w, int h, int cols, int rows, const byte *data, int client, qboolean dirty) { int i, j; int start, end; if ( !tr.registered ) { return; } R_SyncRenderThread(); // we definately want to sync every frame for the cinematics qglFinish(); start = end = 0; if ( r_speeds->integer ) { start = ri.Milliseconds(); } // make sure rows and cols are powers of 2 for ( i = 0 ; ( 1 << i ) < cols ; i++ ) { } for ( j = 0 ; ( 1 << j ) < rows ; j++ ) { } if ( ( 1 << i ) != cols || ( 1 << j ) != rows) { ri.Error (ERR_DROP, "Draw_StretchRaw: size not a power of 2: %i by %i", cols, rows); } GL_Bind( tr.scratchImage[client] ); // if the scratchImage isn't in the format we want, specify it as a new texture if ( cols != tr.scratchImage[client]->width || rows != tr.scratchImage[client]->height ) { tr.scratchImage[client]->width = tr.scratchImage[client]->uploadWidth = cols; tr.scratchImage[client]->height = tr.scratchImage[client]->uploadHeight = rows; qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB8, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP ); } else { if (dirty) { // otherwise, just subimage upload it so that drivers can tell we are going to be changing // it and don't try and do a texture compression qglTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0, cols, rows, GL_RGBA, GL_UNSIGNED_BYTE, data ); } } if ( r_speeds->integer ) { end = ri.Milliseconds(); ri.Printf( PRINT_ALL, "qglTexSubImage2D %i, %i: %i msec\n", cols, rows, end - start ); } RB_SetGL2D(); qglColor3f( tr.identityLight, tr.identityLight, tr.identityLight ); qglBegin (GL_QUADS); qglTexCoord2f ( 0.5f / cols, 0.5f / rows ); qglVertex2f (x, y); qglTexCoord2f ( ( cols - 0.5f ) / cols , 0.5f / rows ); qglVertex2f (x+w, y); qglTexCoord2f ( ( cols - 0.5f ) / cols, ( rows - 0.5f ) / rows ); qglVertex2f (x+w, y+h); qglTexCoord2f ( 0.5f / cols, ( rows - 0.5f ) / rows ); qglVertex2f (x, y+h); qglEnd (); } void RE_UploadCinematic (int w, int h, int cols, int rows, const byte *data, int client, qboolean dirty) { GL_Bind( tr.scratchImage[client] ); // if the scratchImage isn't in the format we want, specify it as a new texture if ( cols != tr.scratchImage[client]->width || rows != tr.scratchImage[client]->height ) { tr.scratchImage[client]->width = tr.scratchImage[client]->uploadWidth = cols; tr.scratchImage[client]->height = tr.scratchImage[client]->uploadHeight = rows; qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB8, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP ); qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP ); } else { if (dirty) { // otherwise, just subimage upload it so that drivers can tell we are going to be changing // it and don't try and do a texture compression qglTexSubImage2D( GL_TEXTURE_2D, 0, 0, 0, cols, rows, GL_RGBA, GL_UNSIGNED_BYTE, data ); } } } /* ============= RB_SetColor ============= */ const void *RB_SetColor( const void *data ) { const setColorCommand_t *cmd; cmd = (const setColorCommand_t *)data; backEnd.color2D[0] = cmd->color[0] * 255; backEnd.color2D[1] = cmd->color[1] * 255; backEnd.color2D[2] = cmd->color[2] * 255; backEnd.color2D[3] = cmd->color[3] * 255; return (const void *)(cmd + 1); } /* ============= RB_StretchPic ============= */ const void *RB_StretchPic ( const void *data ) { const stretchPicCommand_t *cmd; shader_t *shader; int numVerts, numIndexes; cmd = (const stretchPicCommand_t *)data; if ( !backEnd.projection2D ) { RB_SetGL2D(); } shader = cmd->shader; if ( shader != tess.shader ) { if ( tess.numIndexes ) { RB_EndSurface(); } backEnd.currentEntity = &backEnd.entity2D; RB_BeginSurface( shader, 0 ); } RB_CHECKOVERFLOW( 4, 6 ); numVerts = tess.numVertexes; numIndexes = tess.numIndexes; tess.numVertexes += 4; tess.numIndexes += 6; tess.indexes[ numIndexes ] = numVerts + 3; tess.indexes[ numIndexes + 1 ] = numVerts + 0; tess.indexes[ numIndexes + 2 ] = numVerts + 2; tess.indexes[ numIndexes + 3 ] = numVerts + 2; tess.indexes[ numIndexes + 4 ] = numVerts + 0; tess.indexes[ numIndexes + 5 ] = numVerts + 1; *(int *)tess.vertexColors[ numVerts ] = *(int *)tess.vertexColors[ numVerts + 1 ] = *(int *)tess.vertexColors[ numVerts + 2 ] = *(int *)tess.vertexColors[ numVerts + 3 ] = *(int *)backEnd.color2D; tess.xyz[ numVerts ][0] = cmd->x; tess.xyz[ numVerts ][1] = cmd->y; tess.xyz[ numVerts ][2] = 0; tess.texCoords[ numVerts ][0][0] = cmd->s1; tess.texCoords[ numVerts ][0][1] = cmd->t1; tess.xyz[ numVerts + 1 ][0] = cmd->x + cmd->w; tess.xyz[ numVerts + 1 ][1] = cmd->y; tess.xyz[ numVerts + 1 ][2] = 0; tess.texCoords[ numVerts + 1 ][0][0] = cmd->s2; tess.texCoords[ numVerts + 1 ][0][1] = cmd->t1; tess.xyz[ numVerts + 2 ][0] = cmd->x + cmd->w; tess.xyz[ numVerts + 2 ][1] = cmd->y + cmd->h; tess.xyz[ numVerts + 2 ][2] = 0; tess.texCoords[ numVerts + 2 ][0][0] = cmd->s2; tess.texCoords[ numVerts + 2 ][0][1] = cmd->t2; tess.xyz[ numVerts + 3 ][0] = cmd->x; tess.xyz[ numVerts + 3 ][1] = cmd->y + cmd->h; tess.xyz[ numVerts + 3 ][2] = 0; tess.texCoords[ numVerts + 3 ][0][0] = cmd->s1; tess.texCoords[ numVerts + 3 ][0][1] = cmd->t2; return (const void *)(cmd + 1); } /* ============= RB_DrawSurfs ============= */ const void *RB_DrawSurfs( const void *data ) { const drawSurfsCommand_t *cmd; // finish any 2D drawing if needed if ( tess.numIndexes ) { RB_EndSurface(); } cmd = (const drawSurfsCommand_t *)data; backEnd.refdef = cmd->refdef; backEnd.viewParms = cmd->viewParms; RB_RenderDrawSurfList( cmd->drawSurfs, cmd->numDrawSurfs ); return (const void *)(cmd + 1); } /* ============= RB_DrawBuffer ============= */ const void *RB_DrawBuffer( const void *data ) { const drawBufferCommand_t *cmd; cmd = (const drawBufferCommand_t *)data; qglDrawBuffer( cmd->buffer ); // clear screen for debugging if ( r_clear->integer ) { qglClearColor( 1, 0, 0.5, 1 ); qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); } return (const void *)(cmd + 1); } /* =============== RB_ShowImages Draw all the images to the screen, on top of whatever was there. This is used to test for texture thrashing. Also called by RE_EndRegistration =============== */ void RB_ShowImages( void ) { int i; image_t *image; float x, y, w, h; int start, end; if ( !backEnd.projection2D ) { RB_SetGL2D(); } qglClear( GL_COLOR_BUFFER_BIT ); qglFinish(); start = ri.Milliseconds(); for ( i=0 ; iinteger == 2 ) { w *= image->uploadWidth / 512.0f; h *= image->uploadHeight / 512.0f; } GL_Bind( image ); qglBegin (GL_QUADS); qglTexCoord2f( 0, 0 ); qglVertex2f( x, y ); qglTexCoord2f( 1, 0 ); qglVertex2f( x + w, y ); qglTexCoord2f( 1, 1 ); qglVertex2f( x + w, y + h ); qglTexCoord2f( 0, 1 ); qglVertex2f( x, y + h ); qglEnd(); } qglFinish(); end = ri.Milliseconds(); ri.Printf( PRINT_ALL, "%i msec to draw all images\n", end - start ); } /* ============= RB_SwapBuffers ============= */ const void *RB_SwapBuffers( const void *data ) { const swapBuffersCommand_t *cmd; // finish any 2D drawing if needed if ( tess.numIndexes ) { RB_EndSurface(); } // texture swapping test if ( r_showImages->integer ) { RB_ShowImages(); } cmd = (const swapBuffersCommand_t *)data; // we measure overdraw by reading back the stencil buffer and // counting up the number of increments that have happened if ( r_measureOverdraw->integer ) { int i; long sum = 0; unsigned char *stencilReadback; stencilReadback = ri.Hunk_AllocateTempMemory( glConfig.vidWidth * glConfig.vidHeight ); qglReadPixels( 0, 0, glConfig.vidWidth, glConfig.vidHeight, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, stencilReadback ); for ( i = 0; i < glConfig.vidWidth * glConfig.vidHeight; i++ ) { sum += stencilReadback[i]; } backEnd.pc.c_overDraw += sum; ri.Hunk_FreeTempMemory( stencilReadback ); } if ( !glState.finishCalled ) { qglFinish(); } GLimp_LogComment( "***************** RB_SwapBuffers *****************\n\n\n" ); GLimp_EndFrame(); backEnd.projection2D = qfalse; return (const void *)(cmd + 1); } /* ==================== RB_ExecuteRenderCommands This function will be called synchronously if running without smp extensions, or asynchronously by another thread. ==================== */ void RB_ExecuteRenderCommands( const void *data ) { int t1, t2; t1 = ri.Milliseconds (); if ( !r_smp->integer || data == backEndData[0]->commands.cmds ) { backEnd.smpFrame = 0; } else { backEnd.smpFrame = 1; } while ( 1 ) { switch ( *(const int *)data ) { case RC_SET_COLOR: data = RB_SetColor( data ); break; case RC_STRETCH_PIC: data = RB_StretchPic( data ); break; case RC_DRAW_SURFS: data = RB_DrawSurfs( data ); break; case RC_DRAW_BUFFER: data = RB_DrawBuffer( data ); break; case RC_SWAP_BUFFERS: data = RB_SwapBuffers( data ); break; case RC_SCREENSHOT: data = RB_TakeScreenshotCmd( data ); break; case RC_END_OF_LIST: default: // stop rendering on this thread t2 = ri.Milliseconds (); backEnd.pc.msec = t2 - t1; return; } } } /* ================ RB_RenderThread ================ */ void RB_RenderThread( void ) { const void *data; // wait for either a rendering command or a quit command while ( 1 ) { // sleep until we have work to do data = GLimp_RendererSleep(); if ( !data ) { return; // all done, renderer is shutting down } renderThreadActive = qtrue; RB_ExecuteRenderCommands( data ); renderThreadActive = qfalse; } }