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-rw-r--r--code/renderer/tr_backend.c1285
1 files changed, 1285 insertions, 0 deletions
diff --git a/code/renderer/tr_backend.c b/code/renderer/tr_backend.c
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--- /dev/null
+++ b/code/renderer/tr_backend.c
@@ -0,0 +1,1285 @@
+/*
+===========================================================================
+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
+ //
+#ifndef PANDORA
+ 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 );
+ }
+ }
+#endif
+ //
+ // 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];
+#ifdef PANDORA
+ float plane2[4];
+#else
+ double plane2[4];
+#endif
+ 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 );
+#ifdef PANDORA
+ qglClipPlanef (GL_CLIP_PLANE0, plane2);
+#else
+ qglClipPlane (GL_CLIP_PLANE0, plane2);
+#endif
+ 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, isCrosshair, wasCrosshair;
+ int i;
+ drawSurf_t *drawSurf;
+ int oldSort;
+ float originalTime;
+
+ // 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;
+ wasCrosshair = 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) {
+ RB_EndSurface();
+ }
+ RB_BeginSurface( shader, fogNum );
+ oldShader = shader;
+ oldFogNum = fogNum;
+ oldDlighted = dlighted;
+ }
+
+ //
+ // change the modelview matrix if needed
+ //
+ if ( entityNum != oldEntityNum ) {
+ depthRange = isCrosshair = 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;
+
+ if(backEnd.currentEntity->e.renderfx & RF_CROSSHAIR)
+ isCrosshair = 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. Also change projection matrix so first person weapon does not look like coming
+ // out of the screen.
+ //
+ if (oldDepthRange != depthRange || wasCrosshair != isCrosshair)
+ {
+ if (depthRange)
+ {
+ if(backEnd.viewParms.stereoFrame != STEREO_CENTER)
+ {
+ if(isCrosshair)
+ {
+ if(oldDepthRange)
+ {
+ // was not a crosshair but now is, change back proj matrix
+ qglMatrixMode(GL_PROJECTION);
+ qglLoadMatrixf(backEnd.viewParms.projectionMatrix);
+ qglMatrixMode(GL_MODELVIEW);
+ }
+ }
+ else
+ {
+ viewParms_t temp = backEnd.viewParms;
+
+ R_SetupProjection(&temp, r_znear->value, qfalse);
+
+ qglMatrixMode(GL_PROJECTION);
+ qglLoadMatrixf(temp.projectionMatrix);
+ qglMatrixMode(GL_MODELVIEW);
+ }
+ }
+
+ if(!oldDepthRange)
+#ifdef PANDORA
+ qglDepthRangef (0, 0.3);
+#else
+ qglDepthRange (0, 0.3);
+#endif
+ }
+ else
+ {
+ if(!wasCrosshair && backEnd.viewParms.stereoFrame != STEREO_CENTER)
+ {
+ qglMatrixMode(GL_PROJECTION);
+ qglLoadMatrixf(backEnd.viewParms.projectionMatrix);
+ qglMatrixMode(GL_MODELVIEW);
+ }
+#ifdef PANDORA
+ qglDepthRangef (0, 1);
+#else
+ qglDepthRange (0, 1);
+#endif
+ }
+
+ oldDepthRange = depthRange;
+ wasCrosshair = isCrosshair;
+ }
+
+ 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 ) {
+#ifdef PANDORA
+ qglDepthRangef (0, 1);
+#else
+ qglDepthRange (0, 1);
+#endif
+ }
+
+#if 0
+ RB_DrawSun();
+#endif
+ // darken down any stencil shadows
+ RB_ShadowFinish();
+
+ // add light flares on lights that aren't obscured
+ RB_RenderFlares();
+}
+
+
+/*
+============================================================================
+
+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 ();
+#ifdef PANDORA
+ qglOrthof (0, glConfig.vidWidth, glConfig.vidHeight, 0, 0, 1);
+#else
+ qglOrtho (0, glConfig.vidWidth, glConfig.vidHeight, 0, 0, 1);
+#endif
+ 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;
+#ifdef PANDORA
+ vec2_t texcoords[4];
+ vec2_t verts[4];
+ glIndex_t indicies[6] = { 0, 1, 2, 0, 3, 2 };
+#endif
+ 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;
+#ifdef PANDORA
+ qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data );
+#else
+ qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB8, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data );
+#endif
+ 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_TO_EDGE );
+ qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
+ } 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();
+
+#ifdef PANDORA
+ glColor4f( tr.identityLight, tr.identityLight, tr.identityLight, 1.0f );
+
+ verts[0][0] = x; verts[0][1] = y;
+ verts[1][0] = x+w; verts[1][1] = y;
+ verts[2][0] = x+w; verts[2][1] = y+h;
+ verts[3][0] = x; verts[3][1] = y+h;
+
+ texcoords[0][0] = 0.5f/cols; texcoords[0][1] = 0.5f/rows;
+ texcoords[1][0] = (cols-0.5f)/cols; texcoords[1][1] = 0.5f/rows;
+ texcoords[2][0] = (cols-0.5f)/cols; texcoords[2][1] = (rows-0.5f)/rows;
+ texcoords[3][0] = 0.5f/cols; texcoords[3][1] = (rows-0.5f)/rows;
+
+ qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
+ qglTexCoordPointer( 2, GL_FLOAT, 0, texcoords );
+ qglVertexPointer ( 2, GL_FLOAT, 0, verts );
+ qglDrawElements( GL_TRIANGLE_STRIP, 6, GL_INDEX_TYPE, indicies );
+ qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
+#else
+ 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 ();
+#endif
+}
+
+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;
+#ifdef PANDORA
+ qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data );
+#else
+ qglTexImage2D( GL_TEXTURE_2D, 0, GL_RGB8, cols, rows, 0, GL_RGBA, GL_UNSIGNED_BYTE, data );
+#endif
+ 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_TO_EDGE );
+ qglTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE );
+ } 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;
+#ifdef PANDORA
+ vec2_t texcoords[4] = { {0.0f, 0.0f}, {1.0f, 0.0f}, {1.0f, 1.0f}, {0.0f, 1.0f} };
+ vec2_t verts[4];
+ glIndex_t indicies[6] = { 0, 1, 2, 0, 3, 2 };
+#endif
+
+ if ( !backEnd.projection2D ) {
+ RB_SetGL2D();
+ }
+
+ qglClear( GL_COLOR_BUFFER_BIT );
+
+ qglFinish();
+
+ start = ri.Milliseconds();
+
+#ifdef PANDORA
+ qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
+#endif
+ for ( i=0 ; i<tr.numImages ; i++ ) {
+ image = tr.images[i];
+
+ w = glConfig.vidWidth / 20;
+ h = glConfig.vidHeight / 15;
+ x = i % 20 * w;
+ y = i / 20 * h;
+
+ // show in proportional size in mode 2
+ if ( r_showImages->integer == 2 ) {
+ w *= image->uploadWidth / 512.0f;
+ h *= image->uploadHeight / 512.0f;
+ }
+#ifdef PANDORA
+ verts[0][0] = x; verts[0][1] = y;
+ verts[1][0] = x+w; verts[1][1] = y;
+ verts[2][0] = x+w; verts[2][1] = y+h;
+ verts[3][0] = x; verts[3][1] = y+h;
+
+ qglTexCoordPointer( 2, GL_FLOAT, 0, texcoords );
+ qglVertexPointer ( 2, GL_FLOAT, 0, verts );
+ qglDrawElements( GL_TRIANGLE_STRIP, 6, GL_INDEX_TYPE, indicies );
+#else
+ 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();
+#endif
+ }
+#ifdef PANDORA
+ qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
+#endif
+ qglFinish();
+
+ end = ri.Milliseconds();
+ ri.Printf( PRINT_ALL, "%i msec to draw all images\n", end - start );
+
+}
+
+/*
+=============
+RB_ColorMask
+
+=============
+*/
+const void *RB_ColorMask(const void *data)
+{
+ const colorMaskCommand_t *cmd = data;
+
+ qglColorMask(cmd->rgba[0], cmd->rgba[1], cmd->rgba[2], cmd->rgba[3]);
+
+ return (const void *)(cmd + 1);
+}
+
+/*
+=============
+RB_ClearDepth
+
+=============
+*/
+const void *RB_ClearDepth(const void *data)
+{
+ const clearDepthCommand_t *cmd = data;
+
+ if(tess.numIndexes)
+ RB_EndSurface();
+
+ // texture swapping test
+ if (r_showImages->integer)
+ RB_ShowImages();
+
+ qglClear(GL_DEPTH_BUFFER_BIT);
+
+ return (const void *)(cmd + 1);
+}
+
+/*
+=============
+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;
+
+#ifndef PANDORA
+ // 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 );
+ }
+#endif
+
+ 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_VIDEOFRAME:
+ data = RB_TakeVideoFrameCmd( data );
+ break;
+ case RC_COLORMASK:
+ data = RB_ColorMask(data);
+ break;
+ case RC_CLEARDEPTH:
+ data = RB_ClearDepth(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;
+ }
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 22:21:09 +0000