void GLRB_SetOverdrawMeasureEnabled( qboolean enabled )
{
if ( !enabled )
{
qglDisable( GL_STENCIL_TEST );
}
else
{
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
}
/*
* RB_Clear
*/
void RB_Clear( int bits, float r, float g, float b, float a )
{
// this is required for glClear(GL_DEPTH_BUFFER_BIT) to work
if( bits & GL_DEPTH_BUFFER_BIT )
RB_SetState( GLSTATE_DEPTHWRITE );
if( bits & GL_STENCIL_BUFFER_BIT )
qglClearStencil( 128 );
if( bits & GL_COLOR_BUFFER_BIT )
qglClearColor( r, g, b, a );
qglClear( bits );
RB_DepthRange( 0, 1 );
}
/*
* RB_Clear
*/
void RB_Clear( int bits, float r, float g, float b, float a )
{
int state = rb.gl.state;
if( bits & GL_DEPTH_BUFFER_BIT )
state |= GLSTATE_DEPTHWRITE;
if( bits & GL_STENCIL_BUFFER_BIT )
qglClearStencil( 128 );
if( bits & GL_COLOR_BUFFER_BIT )
{
state &= ~GLSTATE_NO_COLORWRITE;
qglClearColor( r, g, b, a );
}
RB_SetState( state );
qglClear( bits );
RB_DepthRange( 0.0f, 1.0f );
}
/*
=================
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) {
// set the modelview matrix for the viewer
qglMatrixMode(GL_PROJECTION);
qglLoadMatrixf( backEnd.viewDef->projectionMatrix );
qglMatrixMode(GL_MODELVIEW);
// set the window clipping
qglViewport( tr.viewportOffset[0] + backEnd.viewDef->viewport.x1,
tr.viewportOffset[1] + backEnd.viewDef->viewport.y1,
backEnd.viewDef->viewport.x2 + 1 - backEnd.viewDef->viewport.x1,
backEnd.viewDef->viewport.y2 + 1 - backEnd.viewDef->viewport.y1 );
// the scissor may be smaller than the viewport for subviews
qglScissor( tr.viewportOffset[0] + backEnd.viewDef->viewport.x1 + backEnd.viewDef->scissor.x1,
tr.viewportOffset[1] + backEnd.viewDef->viewport.y1 + backEnd.viewDef->scissor.y1,
backEnd.viewDef->scissor.x2 + 1 - backEnd.viewDef->scissor.x1,
backEnd.viewDef->scissor.y2 + 1 - backEnd.viewDef->scissor.y1 );
backEnd.currentScissor = backEnd.viewDef->scissor;
// ensures that depth writes are enabled for the depth clear
GL_State( GLS_DEFAULT );
// we don't have to clear the depth / stencil buffer for 2D rendering
if ( backEnd.viewDef->viewEntitys ) {
qglStencilMask( 0xff );
// some cards may have 7 bit stencil buffers, so don't assume this
// should be 128
qglClearStencil( 1<<(glConfig.stencilBits-1) );
qglClear( GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT );
qglEnable( GL_DEPTH_TEST );
} else {
qglDisable( GL_DEPTH_TEST );
qglDisable( GL_STENCIL_TEST );
}
backEnd.glState.faceCulling = -1; // force face culling to set next time
GL_Cull( CT_FRONT_SIDED );
}
void RB_MaskTessEnd( void ) {
shaderCommands_t *input;
input = &tess;
//qglClear( GL_COLOR_BUFFER_BIT );
qglColorMask(GL_FALSE,GL_FALSE,GL_FALSE,GL_FALSE);
qglDepthMask(GL_FALSE);
qglEnable(GL_STENCIL_TEST);
qglClearStencil(0);
qglClear(GL_STENCIL_BUFFER_BIT);
qglStencilFunc(GL_ALWAYS,1,1);
qglStencilOp(GL_KEEP,GL_KEEP,GL_REPLACE);
tess.currentStageIteratorFunc();
qglDepthMask(GL_TRUE);
qglColorMask(GL_TRUE,GL_TRUE,GL_TRUE,GL_TRUE);
qglStencilFunc(GL_EQUAL,1,1);
qglStencilOp(GL_KEEP,GL_KEEP,GL_KEEP);
}
/*
====================
RE_BeginFrame
If running in stereo, RE_BeginFrame will be called twice
for each RE_EndFrame
====================
*/
void RE_BeginFrame( stereoFrame_t stereoFrame ) {
drawBufferCommand_t *cmd = NULL;
colorMaskCommand_t *colcmd = NULL;
if ( !tr.registered ) {
return;
}
glState.finishCalled = qfalse;
tr.frameCount++;
tr.frameSceneNum = 0;
//
// do overdraw measurement
//
if ( r_measureOverdraw->integer )
{
if ( glConfig.stencilBits < 4 )
{
ri.Printf( PRINT_ALL, "Warning: not enough stencil bits to measure overdraw: %d\n", glConfig.stencilBits );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else if ( r_shadows->integer == 2 )
{
ri.Printf( PRINT_ALL, "Warning: stencil shadows and overdraw measurement are mutually exclusive\n" );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else
{
R_IssuePendingRenderCommands();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
r_measureOverdraw->modified = qfalse;
}
else
{
// this is only reached if it was on and is now off
if ( r_measureOverdraw->modified ) {
R_IssuePendingRenderCommands();
qglDisable( GL_STENCIL_TEST );
}
r_measureOverdraw->modified = qfalse;
}
//
// texturemode stuff
//
if ( r_textureMode->modified ) {
R_IssuePendingRenderCommands();
GL_TextureMode( r_textureMode->string );
r_textureMode->modified = qfalse;
}
//
// gamma stuff
//
if ( r_gamma->modified ) {
r_gamma->modified = qfalse;
R_IssuePendingRenderCommands();
R_SetColorMappings();
}
// check for errors
if ( !r_ignoreGLErrors->integer )
{
int err;
R_IssuePendingRenderCommands();
if ((err = qglGetError()) != GL_NO_ERROR)
ri.Error(ERR_FATAL, "RE_BeginFrame() - glGetError() failed (0x%x)!", err);
}
if (glConfig.stereoEnabled) {
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
cmd->commandId = RC_DRAW_BUFFER;
if ( stereoFrame == STEREO_LEFT ) {
cmd->buffer = (int)GL_BACK_LEFT;
} else if ( stereoFrame == STEREO_RIGHT ) {
cmd->buffer = (int)GL_BACK_RIGHT;
} else {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
}
}
else
{
if(r_anaglyphMode->integer)
{
if(r_anaglyphMode->modified)
{
// clear both, front and backbuffer.
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
backEnd.colorMask[0] = GL_FALSE;
backEnd.colorMask[1] = GL_FALSE;
backEnd.colorMask[2] = GL_FALSE;
backEnd.colorMask[3] = GL_FALSE;
qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
if (glRefConfig.framebufferObject)
{
// clear all framebuffers
if (tr.msaaResolveFbo)
{
FBO_Bind(tr.msaaResolveFbo);
qglClear(GL_COLOR_BUFFER_BIT);
}
if (tr.renderFbo)
{
FBO_Bind(tr.renderFbo);
qglClear(GL_COLOR_BUFFER_BIT);
}
FBO_Bind(NULL);
}
qglDrawBuffer(GL_FRONT);
qglClear(GL_COLOR_BUFFER_BIT);
qglDrawBuffer(GL_BACK);
qglClear(GL_COLOR_BUFFER_BIT);
r_anaglyphMode->modified = qfalse;
}
if(stereoFrame == STEREO_LEFT)
{
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
if( !(colcmd = R_GetCommandBuffer(sizeof(*colcmd))) )
return;
}
else if(stereoFrame == STEREO_RIGHT)
{
clearDepthCommand_t *cldcmd;
if( !(cldcmd = R_GetCommandBuffer(sizeof(*cldcmd))) )
return;
cldcmd->commandId = RC_CLEARDEPTH;
if( !(colcmd = R_GetCommandBuffer(sizeof(*colcmd))) )
return;
}
else
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
R_SetColorMode(colcmd->rgba, stereoFrame, r_anaglyphMode->integer);
colcmd->commandId = RC_COLORMASK;
}
else
{
if(stereoFrame != STEREO_CENTER)
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is disabled, but stereoFrame was %i", stereoFrame );
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
}
if(cmd)
{
cmd->commandId = RC_DRAW_BUFFER;
if(r_anaglyphMode->modified)
{
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
backEnd.colorMask[0] = 0;
backEnd.colorMask[1] = 0;
backEnd.colorMask[2] = 0;
backEnd.colorMask[3] = 0;
r_anaglyphMode->modified = qfalse;
}
if (!Q_stricmp(r_drawBuffer->string, "GL_FRONT"))
cmd->buffer = (int)GL_FRONT;
else
cmd->buffer = (int)GL_BACK;
}
}
tr.refdef.stereoFrame = stereoFrame;
}
/*
====================
RE_BeginFrame
If running in stereo, RE_BeginFrame will be called twice
for each RE_EndFrame
====================
*/
void RE_BeginFrame( stereoFrame_t stereoFrame ) {
drawBufferCommand_t *cmd;
if ( !tr.registered ) {
return;
}
glState.finishCalled = qfalse;
tr.frameCount++;
tr.frameSceneNum = 0;
//
// do overdraw measurement
//
if ( r_measureOverdraw->integer )
{
if ( glConfig.stencilBits < 4 )
{
ri->Printf( PRINT_ALL, "Warning: not enough stencil bits to measure overdraw: %d\n", glConfig.stencilBits );
ri->Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else if ( r_shadows->integer == 2 )
{
ri->Printf( PRINT_ALL, "Warning: stencil shadows and overdraw measurement are mutually exclusive\n" );
ri->Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else
{
R_IssuePendingRenderCommands();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
r_measureOverdraw->modified = qfalse;
}
else
{
// this is only reached if it was on and is now off
if ( r_measureOverdraw->modified ) {
R_IssuePendingRenderCommands();
qglDisable( GL_STENCIL_TEST );
}
r_measureOverdraw->modified = qfalse;
}
//
// texturemode stuff
//
if ( r_textureMode->modified || r_ext_texture_filter_anisotropic->modified) {
R_IssuePendingRenderCommands();
GL_TextureMode( r_textureMode->string );
r_textureMode->modified = qfalse;
r_ext_texture_filter_anisotropic->modified = qfalse;
}
//
// gamma stuff
//
if ( r_gamma->modified ) {
r_gamma->modified = qfalse;
R_IssuePendingRenderCommands();
R_SetColorMappings();
}
// check for errors
if ( !r_ignoreGLErrors->integer ) {
int err;
R_IssuePendingRenderCommands();
if ( ( err = qglGetError() ) != GL_NO_ERROR ) {
Com_Error( ERR_FATAL, "RE_BeginFrame() - glGetError() failed (0x%x)!\n", err );
}
}
//
// draw buffer stuff
//
cmd = (drawBufferCommand_t *) R_GetCommandBuffer( sizeof( *cmd ) );
if ( !cmd ) {
return;
}
cmd->commandId = RC_DRAW_BUFFER;
if ( glConfig.stereoEnabled ) {
if ( stereoFrame == STEREO_LEFT ) {
cmd->buffer = (int)GL_BACK_LEFT;
} else if ( stereoFrame == STEREO_RIGHT ) {
cmd->buffer = (int)GL_BACK_RIGHT;
} else {
Com_Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
}
} else {
if ( stereoFrame != STEREO_CENTER ) {
Com_Error( ERR_FATAL, "RE_BeginFrame: Stereo is disabled, but stereoFrame was %i", stereoFrame );
}
// if ( !Q_stricmp( r_drawBuffer->string, "GL_FRONT" ) ) {
// cmd->buffer = (int)GL_FRONT;
// } else
{
cmd->buffer = (int)GL_BACK;
}
}
}
/*
====================
RE_BeginFrame
If running in stereo, RE_BeginFrame will be called twice
for each RE_EndFrame
====================
*/
void RE_BeginFrame( stereoFrame_t stereoFrame ) {
drawBufferCommand_t *cmd;
if ( !tr.registered ) {
return;
}
glState.finishCalled = qfalse;
tr.frameCount++;
tr.frameSceneNum = 0;
backEnd.traceShader = tr.traceShader;
backEnd.doneBloom = qfalse;
backEnd.doneSurfaces = qfalse;
backEnd.sceneZfar = 2048;
tr.traceShader = qfalse;
//
// do overdraw measurement
//
if ( r_measureOverdraw->integer )
{
if ( glConfig.stencilBits < 4 )
{
ri.Printf( PRINT_ALL, "Warning: not enough stencil bits to measure overdraw: %d\n", glConfig.stencilBits );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else if ( r_shadows->integer == 2 )
{
ri.Printf( PRINT_ALL, "Warning: stencil shadows and overdraw measurement are mutually exclusive\n" );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else if ( mme_saveStencil->integer )
{
ri.Printf( PRINT_ALL, "Warning: mme stencil masks and overdraw measurement are mutually exclusive\n" );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
}
else
{
R_SyncRenderThread();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
r_measureOverdraw->modified = qfalse;
}
else
{
// this is only reached if it was on and is now off
if ( r_measureOverdraw->modified ) {
R_SyncRenderThread();
qglDisable( GL_STENCIL_TEST );
}
r_measureOverdraw->modified = qfalse;
}
if ( mme_saveStencil->integer == 1 ) {
R_SyncRenderThread();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 255U, 255U );
qglStencilOp( GL_KEEP, GL_KEEP, GL_ZERO );
backEnd.doingStencil = qfalse;
} else if ( mme_saveStencil->integer == 2 ) {
R_SyncRenderThread();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 255U, 255U );
qglStencilOp( GL_KEEP, GL_KEEP, GL_REPLACE );
backEnd.doingStencil = qfalse;
} else {
qglDisable( GL_STENCIL_TEST );
}
//
// texturemode stuff
//
if ( r_textureMode->modified ) {
R_SyncRenderThread();
GL_TextureMode( r_textureMode->string );
r_textureMode->modified = qfalse;
}
if ( r_anisotropy->modified ) {
R_SyncRenderThread();
GL_Anisotropy( r_anisotropy->integer );
r_anisotropy->modified = qfalse;
}
//
// gamma stuff
//
if ( r_gamma->modified ) {
r_gamma->modified = qfalse;
R_SyncRenderThread();
R_SetColorMappings();
}
// check for errors
if ( !r_ignoreGLErrors->integer ) {
int err;
R_SyncRenderThread();
if ( ( err = qglGetError() ) != GL_NO_ERROR ) {
ri.Error( ERR_FATAL, "RE_BeginFrame() - glGetError() failed (0x%x)!\n", err );
}
}
if ( mme_worldShader->modified) {
if (R_FindShaderText( mme_worldShader->string )) {
tr.mmeWorldShader = R_FindShader( mme_worldShader->string, LIGHTMAP_NONE, qtrue );
} else {
tr.mmeWorldShader = 0;
}
mme_worldShader->modified = qfalse;
}
if ( mme_pip->integer ) {
tr.mmeWorldShader = R_FindShader( "mme/pip", -1, qtrue );
}
//
// draw buffer stuff
//
cmd = R_GetCommandBuffer( RC_DRAW_BUFFER, sizeof( *cmd ) );
if ( !cmd ) {
return;
}
if ( glConfig.stereoEnabled ) {
if ( stereoFrame == STEREO_LEFT ) {
cmd->buffer = (int)GL_BACK_LEFT;
} else if ( stereoFrame == STEREO_RIGHT ) {
cmd->buffer = (int)GL_BACK_RIGHT;
} else {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
}
} else {
if ( stereoFrame != STEREO_CENTER ) {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is disabled, but stereoFrame was %i", stereoFrame );
}
if ( !Q_stricmp( r_drawBuffer->string, "GL_FRONT" ) ) {
cmd->buffer = (int)GL_FRONT;
} else {
cmd->buffer = (int)GL_BACK;
}
}
}
/*
====================
RE_BeginFrame
If running in stereo, RE_BeginFrame will be called twice
for each RE_EndFrame
====================
*/
void RE_BeginFrame( stereoFrame_t stereoFrame ) {
drawBufferCommand_t *cmd = NULL;
colorMaskCommand_t *colcmd = NULL;
if ( !tr.registered ) {
return;
}
glState.finishCalled = qfalse;
tr.frameCount++;
tr.frameSceneNum = 0;
//
// do overdraw measurement
//
if ( r_measureOverdraw->integer ) {
if ( glConfig.stencilBits < 4 ) {
ri.Printf( PRINT_ALL, "Warning: not enough stencil bits to measure overdraw: %d\n", glConfig.stencilBits );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
} else if ( r_shadows->integer == 2 ) {
ri.Printf( PRINT_ALL, "Warning: stencil shadows and overdraw measurement are mutually exclusive\n" );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
} else
{
R_IssuePendingRenderCommands();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
r_measureOverdraw->modified = qfalse;
} else
{
// this is only reached if it was on and is now off
if ( r_measureOverdraw->modified ) {
R_IssuePendingRenderCommands();
qglDisable( GL_STENCIL_TEST );
}
r_measureOverdraw->modified = qfalse;
}
//
// texturemode stuff
//
if ( r_textureMode->modified ) {
R_IssuePendingRenderCommands();
GL_TextureMode( r_textureMode->string );
r_textureMode->modified = qfalse;
}
//
// ATI stuff
//
// TRUFORM
if ( qglPNTrianglesiATI ) {
// tess
if ( r_ati_truform_tess->modified ) {
r_ati_truform_tess->modified = qfalse;
// cap if necessary
if ( r_ati_truform_tess->value > glConfig.ATIMaxTruformTess ) {
ri.Cvar_Set( "r_ati_truform_tess", va( "%d",glConfig.ATIMaxTruformTess ) );
}
qglPNTrianglesiATI( GL_PN_TRIANGLES_TESSELATION_LEVEL_ATI, r_ati_truform_tess->value );
}
// point mode
if ( r_ati_truform_pointmode->modified ) {
r_ati_truform_pointmode->modified = qfalse;
// GR - shorten the mode name
if ( !Q_stricmp( r_ati_truform_pointmode->string, "LINEAR" ) ) {
glConfig.ATIPointMode = (int)GL_PN_TRIANGLES_POINT_MODE_LINEAR_ATI;
// GR - fix point mode change
} else if ( !Q_stricmp( r_ati_truform_pointmode->string, "CUBIC" ) ) {
glConfig.ATIPointMode = (int)GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI;
} else {
// bogus value, set to valid
glConfig.ATIPointMode = (int)GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI;
ri.Cvar_Set( "r_ati_truform_pointmode", "LINEAR" );
}
qglPNTrianglesiATI( GL_PN_TRIANGLES_POINT_MODE_ATI, glConfig.ATIPointMode );
}
// normal mode
if ( r_ati_truform_normalmode->modified ) {
r_ati_truform_normalmode->modified = qfalse;
// GR - shorten the mode name
if ( !Q_stricmp( r_ati_truform_normalmode->string, "LINEAR" ) ) {
glConfig.ATINormalMode = (int)GL_PN_TRIANGLES_NORMAL_MODE_LINEAR_ATI;
// GR - fix normal mode change
} else if ( !Q_stricmp( r_ati_truform_normalmode->string, "QUADRATIC" ) ) {
glConfig.ATINormalMode = (int)GL_PN_TRIANGLES_NORMAL_MODE_QUADRATIC_ATI;
} else {
// bogus value, set to valid
glConfig.ATINormalMode = (int)GL_PN_TRIANGLES_NORMAL_MODE_LINEAR_ATI;
ri.Cvar_Set( "r_ati_truform_normalmode", "LINEAR" );
}
qglPNTrianglesiATI( GL_PN_TRIANGLES_NORMAL_MODE_ATI, glConfig.ATINormalMode );
}
}
//
// NVidia stuff
//
// fog control
if ( glConfig.NVFogAvailable && r_nv_fogdist_mode->modified ) {
r_nv_fogdist_mode->modified = qfalse;
if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_PLANE_ABSOLUTE_NV" ) ) {
glConfig.NVFogMode = (int)GL_EYE_PLANE_ABSOLUTE_NV;
} else if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_PLANE" ) ) {
glConfig.NVFogMode = (int)GL_EYE_PLANE;
} else if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_RADIAL_NV" ) ) {
glConfig.NVFogMode = (int)GL_EYE_RADIAL_NV;
} else {
// in case this was really 'else', store a valid value for next time
glConfig.NVFogMode = (int)GL_EYE_RADIAL_NV;
ri.Cvar_Set( "r_nv_fogdist_mode", "GL_EYE_RADIAL_NV" );
}
}
//
// gamma stuff
//
if ( r_gamma->modified ) {
r_gamma->modified = qfalse;
R_IssuePendingRenderCommands();
R_SetColorMappings();
}
// check for errors
if ( !r_ignoreGLErrors->integer ) {
int err;
R_IssuePendingRenderCommands();
if ( ( err = qglGetError() ) != GL_NO_ERROR ) {
ri.Error( ERR_FATAL, "RE_BeginFrame() - glGetError() failed (0x%x)!", err );
}
}
if (glConfig.stereoEnabled) {
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
cmd->commandId = RC_DRAW_BUFFER;
if ( stereoFrame == STEREO_LEFT ) {
cmd->buffer = (int)GL_BACK_LEFT;
} else if ( stereoFrame == STEREO_RIGHT ) {
cmd->buffer = (int)GL_BACK_RIGHT;
} else {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
}
}
else
{
if(r_anaglyphMode->integer)
{
if(r_anaglyphMode->modified)
{
// clear both, front and backbuffer.
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
backEnd.colorMask[0] = GL_FALSE;
backEnd.colorMask[1] = GL_FALSE;
backEnd.colorMask[2] = GL_FALSE;
backEnd.colorMask[3] = GL_FALSE;
if (glRefConfig.framebufferObject)
{
// clear all framebuffers
if (tr.msaaResolveFbo)
{
FBO_Bind(tr.msaaResolveFbo);
qglClear(GL_COLOR_BUFFER_BIT);
}
if (tr.renderFbo)
{
FBO_Bind(tr.renderFbo);
qglClear(GL_COLOR_BUFFER_BIT);
}
FBO_Bind(NULL);
}
qglDrawBuffer(GL_FRONT);
qglClear(GL_COLOR_BUFFER_BIT);
qglDrawBuffer(GL_BACK);
qglClear(GL_COLOR_BUFFER_BIT);
r_anaglyphMode->modified = qfalse;
}
if(stereoFrame == STEREO_LEFT)
{
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
if( !(colcmd = R_GetCommandBuffer(sizeof(*colcmd))) )
return;
}
else if(stereoFrame == STEREO_RIGHT)
{
clearDepthCommand_t *cldcmd;
if( !(cldcmd = R_GetCommandBuffer(sizeof(*cldcmd))) )
return;
cldcmd->commandId = RC_CLEARDEPTH;
if( !(colcmd = R_GetCommandBuffer(sizeof(*colcmd))) )
return;
}
else
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
R_SetColorMode(colcmd->rgba, stereoFrame, r_anaglyphMode->integer);
colcmd->commandId = RC_COLORMASK;
}
else
{
if(stereoFrame != STEREO_CENTER)
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is disabled, but stereoFrame was %i", stereoFrame );
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
}
if(cmd)
{
cmd->commandId = RC_DRAW_BUFFER;
if(r_anaglyphMode->modified)
{
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
backEnd.colorMask[0] = 0;
backEnd.colorMask[1] = 0;
backEnd.colorMask[2] = 0;
backEnd.colorMask[3] = 0;
r_anaglyphMode->modified = qfalse;
}
if (!Q_stricmp(r_drawBuffer->string, "GL_FRONT"))
cmd->buffer = (int)GL_FRONT;
else
cmd->buffer = (int)GL_BACK;
}
}
tr.refdef.stereoFrame = stereoFrame;
}
/*
====================
RE_BeginFrame
If running in stereo, RE_BeginFrame will be called twice
for each RE_EndFrame
====================
*/
void RE_BeginFrame( stereoFrame_t stereoFrame ) {
drawBufferCommand_t *cmd = NULL;
colorMaskCommand_t *colcmd = NULL;
if ( !tr.registered ) {
return;
}
glState.finishCalled = qfalse;
tr.frameCount++;
tr.frameSceneNum = 0;
//
// do overdraw measurement
//
if ( r_measureOverdraw->integer ) {
if ( glConfig.stencilBits < 4 ) {
ri.Printf( PRINT_ALL, "Warning: not enough stencil bits to measure overdraw: %d\n", glConfig.stencilBits );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
} else if ( r_shadows->integer == 2 ) {
ri.Printf( PRINT_ALL, "Warning: stencil shadows and overdraw measurement are mutually exclusive\n" );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
} else
{
R_IssuePendingRenderCommands();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
r_measureOverdraw->modified = qfalse;
} else
{
// this is only reached if it was on and is now off
if ( r_measureOverdraw->modified ) {
R_IssuePendingRenderCommands();
qglDisable( GL_STENCIL_TEST );
}
r_measureOverdraw->modified = qfalse;
}
//
// texturemode stuff
//
if ( r_textureMode->modified ) {
R_IssuePendingRenderCommands();
GL_TextureMode( r_textureMode->string );
r_textureMode->modified = qfalse;
}
//
// NVidia stuff
//
#ifndef VCMODS_OPENGLES
// fog control
if ( glConfig.NVFogAvailable && r_nv_fogdist_mode->modified ) {
r_nv_fogdist_mode->modified = qfalse;
if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_PLANE_ABSOLUTE_NV" ) ) {
glConfig.NVFogMode = (int)GL_EYE_PLANE_ABSOLUTE_NV;
} else if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_PLANE" ) ) {
glConfig.NVFogMode = (int)GL_EYE_PLANE;
} else if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_RADIAL_NV" ) ) {
glConfig.NVFogMode = (int)GL_EYE_RADIAL_NV;
} else {
// in case this was really 'else', store a valid value for next time
glConfig.NVFogMode = (int)GL_EYE_RADIAL_NV;
ri.Cvar_Set( "r_nv_fogdist_mode", "GL_EYE_RADIAL_NV" );
}
}
#endif
//
// gamma stuff
//
if ( r_gamma->modified ) {
r_gamma->modified = qfalse;
R_IssuePendingRenderCommands();
R_SetColorMappings();
}
// check for errors
if ( !r_ignoreGLErrors->integer ) {
int err;
R_IssuePendingRenderCommands();
if ( ( err = qglGetError() ) != GL_NO_ERROR ) {
ri.Error( ERR_FATAL, "RE_BeginFrame() - glGetError() failed (0x%x)!", err );
}
}
if (glConfig.stereoEnabled) {
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
cmd->commandId = RC_DRAW_BUFFER;
if ( stereoFrame == STEREO_LEFT ) {
cmd->buffer = (int)GL_BACK_LEFT;
} else if ( stereoFrame == STEREO_RIGHT ) {
cmd->buffer = (int)GL_BACK_RIGHT;
} else {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
}
}
else
{
if(r_anaglyphMode->integer)
{
if(r_anaglyphMode->modified)
{
// clear both, front and backbuffer.
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
qglDrawBuffer(GL_FRONT);
qglClear(GL_COLOR_BUFFER_BIT);
qglDrawBuffer(GL_BACK);
qglClear(GL_COLOR_BUFFER_BIT);
r_anaglyphMode->modified = qfalse;
}
if(stereoFrame == STEREO_LEFT)
{
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
if( !(colcmd = R_GetCommandBuffer(sizeof(*colcmd))) )
return;
}
else if(stereoFrame == STEREO_RIGHT)
{
clearDepthCommand_t *cldcmd;
if( !(cldcmd = R_GetCommandBuffer(sizeof(*cldcmd))) )
return;
cldcmd->commandId = RC_CLEARDEPTH;
if( !(colcmd = R_GetCommandBuffer(sizeof(*colcmd))) )
return;
}
else
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
R_SetColorMode(colcmd->rgba, stereoFrame, r_anaglyphMode->integer);
colcmd->commandId = RC_COLORMASK;
}
else
{
if(stereoFrame != STEREO_CENTER)
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is disabled, but stereoFrame was %i", stereoFrame );
if( !(cmd = R_GetCommandBuffer(sizeof(*cmd))) )
return;
}
if(cmd)
{
cmd->commandId = RC_DRAW_BUFFER;
if(r_anaglyphMode->modified)
{
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
r_anaglyphMode->modified = qfalse;
}
if (!Q_stricmp(r_drawBuffer->string, "GL_FRONT"))
cmd->buffer = (int)GL_FRONT;
else
cmd->buffer = (int)GL_BACK;
}
}
tr.refdef.stereoFrame = stereoFrame;
}
/*
==================
GL_Setup3D
TODO: time is messed up
==================
*/
void GL_Setup3D (int time){
double clipPlane[4];
QGL_LogPrintf("---------- RB_Setup3D ----------\n");
backEnd.projection2D = false;
backEnd.time = time;
backEnd.floatTime = MS2SEC(Sys_Milliseconds());
backEnd.viewport.x = backEnd.viewParms.viewport.x;
backEnd.viewport.y = backEnd.viewParms.viewport.y;
backEnd.viewport.width = backEnd.viewParms.viewport.width;
backEnd.viewport.height = backEnd.viewParms.viewport.height;
backEnd.scissor.x = backEnd.viewParms.scissor.x;
backEnd.scissor.y = backEnd.viewParms.scissor.y;
backEnd.scissor.width = backEnd.viewParms.scissor.width;
backEnd.scissor.height = backEnd.viewParms.scissor.height;
backEnd.coordScale[0] = 1.0f / backEnd.viewport.width;
backEnd.coordScale[1] = 1.0f / backEnd.viewport.height;
backEnd.coordBias[0] = -backEnd.viewport.x * backEnd.coordScale[0];
backEnd.coordBias[1] = -backEnd.viewport.y * backEnd.coordScale[1];
backEnd.depthFilling = false;
backEnd.debugRendering = false;
backEnd.currentColorCaptured = SORT_BAD;
backEnd.currentDepthCaptured = false;
// Set up the viewport
GL_Viewport(backEnd.viewport);
// Set up the scissor
GL_Scissor(backEnd.viewport);
// Set up the depth bounds
if (glConfig.depthBoundsTestAvailable)
GL_DepthBounds(0.0f, 1.0f);
// Set the projection matrix
GL_LoadMatrix(GL_PROJECTION, backEnd.viewParms.projectionMatrix);
// Set the modelview matrix
GL_LoadIdentity(GL_MODELVIEW);
// Set the GL state
GL_PolygonMode(GL_FILL);
GL_Disable(GL_CULL_FACE);
GL_Disable(GL_POLYGON_OFFSET_FILL);
GL_Disable(GL_BLEND);
GL_Disable(GL_ALPHA_TEST);
GL_Disable(GL_DEPTH_TEST);
GL_Disable(GL_STENCIL_TEST);
GL_DepthRange(0.0f, 1.0f);
GL_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
GL_DepthMask(GL_TRUE);
GL_StencilMask(255);
// Enable the clip plane if needed
if (backEnd.viewParms.viewType != VIEW_MIRROR)
qglDisable(GL_CLIP_PLANE0);
else {
clipPlane[0] = -DotProduct(backEnd.viewParms.axis[1], backEnd.viewParms.clipPlane.normal);
clipPlane[1] = DotProduct(backEnd.viewParms.axis[2], backEnd.viewParms.clipPlane.normal);
clipPlane[2] = -DotProduct(backEnd.viewParms.axis[0], backEnd.viewParms.clipPlane.normal);
clipPlane[3] = DotProduct(backEnd.viewParms.origin, backEnd.viewParms.clipPlane.normal) - backEnd.viewParms.clipPlane.dist;
qglEnable(GL_CLIP_PLANE0);
qglClipPlane(GL_CLIP_PLANE0, clipPlane);
}
// Enable multisampling if available
if (glConfig.multiSamples > 1)
qglEnable(GL_MULTISAMPLE);
// Clear the buffers
qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
qglClearDepth(1.0f);
qglClearStencil(0);
if (backEnd.viewParms.primaryView)
qglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
else
qglClear(GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
// Check for errors
if (!r_ignoreGLErrors->integerValue)
GL_CheckForErrors();
QGL_LogPrintf("--------------------\n");
}
/*
==================
GL_SetDefaultState
==================
*/
void GL_SetDefaultState (){
int i;
QGL_LogPrintf("---------- GL_SetDefaultState ----------\n");
// Reset the state manager
glState.projectionMatrixIdentity = true;
glState.modelviewMatrixIdentity = true;
for (i = 0; i < MAX_TEXTURE_UNITS; i++)
glState.textureMatrixIdentity[i] = true;
for (i = 0; i < MAX_TEXTURE_UNITS; i++)
glState.texture[i] = NULL;
glState.program = NULL;
glState.indexBuffer = NULL;
glState.vertexBuffer = NULL;
glState.viewportX = 0;
glState.viewportY = 0;
glState.viewportWidth = glConfig.videoWidth;
glState.viewportHeight = glConfig.videoHeight;
glState.scissorX = 0;
glState.scissorY = 0;
glState.scissorWidth = glConfig.videoWidth;
glState.scissorHeight = glConfig.videoHeight;
glState.depthBoundsMin = 0.0f;
glState.depthBoundsMax = 1.0f;
glState.texUnit = 0;
for (i = 0; i < MAX_TEXTURE_UNITS; i++){
glState.texTarget[i] = 0;
glState.texEnv[i] = GL_MODULATE;
glState.texGen[i][0] = GL_OBJECT_LINEAR;
glState.texGen[i][1] = GL_OBJECT_LINEAR;
glState.texGen[i][2] = GL_OBJECT_LINEAR;
glState.texGen[i][3] = GL_OBJECT_LINEAR;
}
glState.cullFace = false;
glState.polygonOffsetFill = false;
glState.polygonOffsetLine = false;
glState.blend = false;
glState.alphaTest = false;
glState.depthTest = false;
glState.stencilTest = false;
for (i = 0; i < MAX_TEXTURE_UNITS; i++){
glState.textureGen[i][0] = false;
glState.textureGen[i][1] = false;
glState.textureGen[i][2] = false;
glState.textureGen[i][3] = false;
}
glState.cullMode = GL_FRONT;
glState.polygonMode = GL_FILL;
glState.polygonOffsetFactor = 0.0f;
glState.polygonOffsetUnits = 0.0f;
glState.blendSrc = GL_ONE;
glState.blendDst = GL_ZERO;
glState.blendMode = GL_FUNC_ADD;
glState.alphaFunc = GL_GREATER;
glState.alphaFuncRef = 0.0f;
glState.depthFunc = GL_LEQUAL;
glState.stencilFunc[0] = GL_ALWAYS;
glState.stencilFunc[1] = GL_ALWAYS;
glState.stencilFuncRef[0] = 0;
glState.stencilFuncRef[1] = 0;
glState.stencilFuncMask[0] = 255;
glState.stencilFuncMask[1] = 255;
glState.stencilOpFail[0] = GL_KEEP;
glState.stencilOpFail[1] = GL_KEEP;
glState.stencilOpZFail[0] = GL_KEEP;
glState.stencilOpZFail[1] = GL_KEEP;
glState.stencilOpZPass[0] = GL_KEEP;
glState.stencilOpZPass[1] = GL_KEEP;
glState.depthMin = 0.0f;
glState.depthMax = 1.0f;
glState.colorMask[0] = GL_TRUE;
glState.colorMask[1] = GL_TRUE;
glState.colorMask[2] = GL_TRUE;
glState.colorMask[3] = GL_TRUE;
glState.depthMask = GL_TRUE;
glState.stencilMask[0] = 255;
glState.stencilMask[1] = 255;
// Set default state
qglMatrixMode(GL_PROJECTION);
qglLoadIdentity();
qglMatrixMode(GL_MODELVIEW);
qglLoadIdentity();
for (i = MAX_TEXTURE_UNITS - 1; i >= 0; i--){
if (i >= glConfig.maxTextureImageUnits)
continue;
if (i >= glConfig.maxTextureUnits){
qglActiveTexture(GL_TEXTURE0 + i);
qglBindTexture(GL_TEXTURE_2D, 0);
qglBindTexture(GL_TEXTURE_3D, 0);
qglBindTexture(GL_TEXTURE_CUBE_MAP, 0);
qglBindTexture(GL_TEXTURE_2D_ARRAY, 0);
continue;
}
qglActiveTexture(GL_TEXTURE0 + i);
qglMatrixMode(GL_TEXTURE);
qglLoadIdentity();
qglDisable(GL_TEXTURE_2D);
qglDisable(GL_TEXTURE_3D);
qglDisable(GL_TEXTURE_CUBE_MAP);
qglDisable(GL_TEXTURE_2D_ARRAY);
qglBindTexture(GL_TEXTURE_2D, 0);
qglBindTexture(GL_TEXTURE_3D, 0);
qglBindTexture(GL_TEXTURE_CUBE_MAP, 0);
qglBindTexture(GL_TEXTURE_2D_ARRAY, 0);
qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
qglDisable(GL_TEXTURE_GEN_S);
qglDisable(GL_TEXTURE_GEN_T);
qglDisable(GL_TEXTURE_GEN_R);
qglDisable(GL_TEXTURE_GEN_Q);
qglTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
qglTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
qglTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
qglTexGeni(GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
}
qglDisable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
qglUseProgram(0);
qglBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
qglBindBuffer(GL_ARRAY_BUFFER, 0);
qglViewport(0, 0, glConfig.videoWidth, glConfig.videoHeight);
qglEnable(GL_SCISSOR_TEST);
qglScissor(0, 0, glConfig.videoWidth, glConfig.videoHeight);
qglEnable(GL_DEPTH_BOUNDS_TEST_EXT);
qglDepthBoundsEXT(0.0f, 1.0f);
qglFrontFace(GL_CCW);
qglShadeModel(GL_SMOOTH);
qglPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
qglDisable(GL_CULL_FACE);
qglCullFace(GL_FRONT);
qglDisable(GL_POLYGON_OFFSET_FILL);
qglDisable(GL_POLYGON_OFFSET_LINE);
qglPolygonOffset(0.0f, 0.0f);
qglDisable(GL_BLEND);
qglBlendFunc(GL_ONE, GL_ZERO);
qglBlendEquation(GL_FUNC_ADD);
qglDisable(GL_ALPHA_TEST);
qglAlphaFunc(GL_GREATER, 0.0f);
qglDisable(GL_DEPTH_TEST);
qglDepthFunc(GL_LEQUAL);
qglDisable(GL_STENCIL_TEST);
qglStencilFunc(GL_ALWAYS, 128, 255);
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
qglDepthRange(0.0f, 1.0f);
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
qglDepthMask(GL_TRUE);
qglStencilMask(255);
qglDisable(GL_DEPTH_CLAMP);
qglDisable(GL_CLIP_PLANE0);
if (glConfig.multiSamples > 1){
qglDisable(GL_MULTISAMPLE);
qglDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
}
qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
qglClearDepth(1.0f);
qglClearStencil(128);
qglEnableClientState(GL_VERTEX_ARRAY);
qglDisableVertexAttribArray(GL_ATTRIB_NORMAL);
qglDisableVertexAttribArray(GL_ATTRIB_TANGENT1);
qglDisableVertexAttribArray(GL_ATTRIB_TANGENT2);
qglDisableVertexAttribArray(GL_ATTRIB_TEXCOORD);
qglDisableVertexAttribArray(GL_ATTRIB_COLOR);
QGL_LogPrintf("--------------------\n");
}
/*
====================
RE_BeginFrame
If running in stereo, RE_BeginFrame will be called twice
for each RE_EndFrame
====================
*/
void RE_BeginFrame( stereoFrame_t stereoFrame ) {
drawBufferCommand_t *cmd;
if ( !tr.registered ) {
return;
}
glState.finishCalled = qfalse;
tr.frameCount++;
tr.frameSceneNum = 0;
//
// do overdraw measurement
//
if ( r_measureOverdraw->integer ) {
if ( glConfig.stencilBits < 4 ) {
ri.Printf( PRINT_ALL, "Warning: not enough stencil bits to measure overdraw: %d\n", glConfig.stencilBits );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
} else if ( r_shadows->integer == 2 ) {
ri.Printf( PRINT_ALL, "Warning: stencil shadows and overdraw measurement are mutually exclusive\n" );
ri.Cvar_Set( "r_measureOverdraw", "0" );
r_measureOverdraw->modified = qfalse;
} else
{
R_SyncRenderThread();
qglEnable( GL_STENCIL_TEST );
qglStencilMask( ~0U );
qglClearStencil( 0U );
qglStencilFunc( GL_ALWAYS, 0U, ~0U );
qglStencilOp( GL_KEEP, GL_INCR, GL_INCR );
}
r_measureOverdraw->modified = qfalse;
} else
{
// this is only reached if it was on and is now off
if ( r_measureOverdraw->modified ) {
R_SyncRenderThread();
qglDisable( GL_STENCIL_TEST );
}
r_measureOverdraw->modified = qfalse;
}
//
// texturemode stuff
//
if ( r_textureMode->modified ) {
R_SyncRenderThread();
GL_TextureMode( r_textureMode->string );
r_textureMode->modified = qfalse;
}
//
// NVidia stuff
//
// fog control
if ( glConfig.NVFogAvailable && r_nv_fogdist_mode->modified ) {
r_nv_fogdist_mode->modified = qfalse;
if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_PLANE_ABSOLUTE_NV" ) ) {
glConfig.NVFogMode = (int)GL_EYE_PLANE_ABSOLUTE_NV;
} else if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_PLANE" ) ) {
glConfig.NVFogMode = (int)GL_EYE_PLANE;
} else if ( !Q_stricmp( r_nv_fogdist_mode->string, "GL_EYE_RADIAL_NV" ) ) {
glConfig.NVFogMode = (int)GL_EYE_RADIAL_NV;
} else {
// in case this was really 'else', store a valid value for next time
glConfig.NVFogMode = (int)GL_EYE_RADIAL_NV;
ri.Cvar_Set( "r_nv_fogdist_mode", "GL_EYE_RADIAL_NV" );
}
}
//
// gamma stuff
//
if ( r_gamma->modified ) {
r_gamma->modified = qfalse;
R_SyncRenderThread();
R_SetColorMappings();
}
// check for errors
if ( !r_ignoreGLErrors->integer ) {
int err;
R_SyncRenderThread();
if ( ( err = qglGetError() ) != GL_NO_ERROR ) {
ri.Error( ERR_FATAL, "RE_BeginFrame() - glGetError() failed (0x%x)!\n", err );
}
}
//
// draw buffer stuff
//
cmd = R_GetCommandBuffer( sizeof( *cmd ) );
if ( !cmd ) {
return;
}
cmd->commandId = RC_DRAW_BUFFER;
if ( glConfig.stereoEnabled ) {
if ( stereoFrame == STEREO_LEFT ) {
cmd->buffer = (int)GL_BACK_LEFT;
} else if ( stereoFrame == STEREO_RIGHT ) {
cmd->buffer = (int)GL_BACK_RIGHT;
} else {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is enabled, but stereoFrame was %i", stereoFrame );
}
} else {
if ( stereoFrame != STEREO_CENTER ) {
ri.Error( ERR_FATAL, "RE_BeginFrame: Stereo is disabled, but stereoFrame was %i", stereoFrame );
}
if ( !Q_stricmp( r_drawBuffer->string, "GL_FRONT" ) ) {
cmd->buffer = (int)GL_FRONT;
} else {
cmd->buffer = (int)GL_BACK;
}
}
}
