void GLRB_ShadowSilhouette( const float* edges, int edgeCount )
{
GL_Bind( tr.whiteImage );
qglEnable( GL_CULL_FACE );
GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
qglColor3f( 0.2f, 0.2f, 0.2f );
// don't write to the color buffer
qglColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_ALWAYS, 1, 255 );
// mirrors have the culling order reversed
GL_Cull( CT_BACK_SIDED ); // @pjb: resolves to GL_FRONT if to mirror flag is set
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
RenderShadowEdges( edges, edgeCount );
GL_Cull( CT_FRONT_SIDED ); // @pjb: resolves to GL_BACK due to mirror flag is set
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
RenderShadowEdges( edges, edgeCount );
// reenable writing to the color buffer
qglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
}
/*
===================
R_ColorByStencilBuffer
Sets the screen colors based on the contents of the
stencil buffer. Stencil of 0 = black, 1 = red, 2 = green,
3 = blue, ..., 7+ = white
===================
*/
static void R_ColorByStencilBuffer() {
int i;
static float colors[8][3] = {
{0,0,0},
{1,0,0},
{0,1,0},
{0,0,1},
{0,1,1},
{1,0,1},
{1,1,0},
{1,1,1},
};
// clear color buffer to white (>6 passes)
GL_Clear( true, false, false, 0, 1.0f, 1.0f, 1.0f, 1.0f );
// now draw color for each stencil value
qglStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
for ( i = 0; i < 6; i++ ) {
GL_Color( colors[i] );
renderProgManager.BindShader_Color();
qglStencilFunc( GL_EQUAL, i, 255 );
RB_PolygonClear();
}
qglStencilFunc( GL_ALWAYS, 0, 255 );
}
/*
=================
RB_ShadowFinish
Darken everything that is is a shadow volume.
We have to delay this until everything has been shadowed,
because otherwise shadows from different body parts would
overlap and double darken.
=================
*/
void RB_ShadowFinish( void ) {
#if defined(VV_LIGHTING) && defined(_XBOX)
StencilShadower.FinishShadows();
#else
if ( r_shadows->integer != 2 ) {
return;
}
if ( glConfig.stencilBits < 4 ) {
return;
}
#ifdef _DEBUG_STENCIL_SHADOWS
return;
#endif
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_NOTEQUAL, 0, 255 );
qglStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
bool planeZeroBack = false;
if (qglIsEnabled(GL_CLIP_PLANE0))
{
planeZeroBack = true;
qglDisable (GL_CLIP_PLANE0);
}
GL_Cull(CT_TWO_SIDED);
//qglDisable (GL_CULL_FACE);
GL_Bind( tr.whiteImage );
qglPushMatrix();
qglLoadIdentity ();
// qglColor3f( 0.6f, 0.6f, 0.6f );
// GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO );
// qglColor3f( 1, 0, 0 );
// GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
qglColor4f( 0.0f, 0.0f, 0.0f, 0.5f );
//GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
GL_State( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
qglBegin( GL_QUADS );
qglVertex3f( -100, 100, -10 );
qglVertex3f( 100, 100, -10 );
qglVertex3f( 100, -100, -10 );
qglVertex3f( -100, -100, -10 );
qglEnd ();
qglColor4f(1,1,1,1);
qglDisable( GL_STENCIL_TEST );
if (planeZeroBack)
{
qglEnable (GL_CLIP_PLANE0);
}
qglPopMatrix();
#endif // VV_LIGHTING && _XBOX
}
// stencil_surf0: clear stencil; draw, incrementing stencil where stencil == 0
// stencil_surf1: draw, incrementing stencil where stencil == 1
// ...
// stencil_surfN: draw, incrementing stencil where stencil == N
// draw_surfN: disable stencil write, color where stencil == N+1
// ...
// draw_surf1: color where stencil == 2
// draw_surf0: color where stencil == 1, disable stencil test
void const* RB_StencilSurf(void const* data)
{
stencilSurfCommand_t const* const cmd = (stencilSurfCommand_t const* const)data;
// Finish any 2D drawing if needed
if(tess.numIndexes)
RB_EndSurface();
backEnd.refdef = cmd->refdef;
backEnd.viewParms = cmd->viewParms;
if(r_subviewStencil->integer)
{
// First stencil surface for this view
if(0 == backEnd.stencil_level)
{
assert(qfalse == backEnd.stencil_draw);
qglClear(GL_STENCIL_BUFFER_BIT);
qglEnable(GL_STENCIL_TEST);
backEnd.stencil_test = qtrue;
// sfail/dpfail: KEEP, dppass: INCR
qglStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
backEnd.stencil_draw = qtrue;
}
qglStencilFunc(GL_EQUAL, backEnd.stencil_level, ~0U);
backEnd.stencil_level++;
RB_RenderDrawSurfList(cmd->drawSurf, 1);
backEnd.pc.c_stencilSurfaces++;
}
return cmd + 1;
}
/*
=====================
RB_StencilShadowPass
Stencil test should already be enabled, and the stencil buffer should have
been set to 128 on any surfaces that might receive shadows
=====================
*/
void RB_StencilShadowPass(const drawSurf_t *drawSurfs)
{
if (!r_shadows.GetBool()) {
return;
}
if (!drawSurfs) {
return;
}
RB_LogComment("---------- RB_StencilShadowPass ----------\n");
globalImages->BindNull();
qglDisableClientState(GL_TEXTURE_COORD_ARRAY);
// for visualizing the shadows
if (r_showShadows.GetInteger()) {
if (r_showShadows.GetInteger() == 2) {
// draw filled in
GL_State(GLS_DEPTHMASK | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_LESS);
} else {
// draw as lines, filling the depth buffer
GL_State(GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO | GLS_POLYMODE_LINE | GLS_DEPTHFUNC_ALWAYS);
}
} else {
// don't write to the color buffer, just the stencil buffer
GL_State(GLS_DEPTHMASK | GLS_COLORMASK | GLS_ALPHAMASK | GLS_DEPTHFUNC_LESS);
}
if (r_shadowPolygonFactor.GetFloat() || r_shadowPolygonOffset.GetFloat()) {
qglPolygonOffset(r_shadowPolygonFactor.GetFloat(), -r_shadowPolygonOffset.GetFloat());
qglEnable(GL_POLYGON_OFFSET_FILL);
}
qglStencilFunc(GL_ALWAYS, 1, 255);
if (glConfig.depthBoundsTestAvailable && r_useDepthBoundsTest.GetBool()) {
qglEnable(GL_DEPTH_BOUNDS_TEST_EXT);
}
RB_RenderDrawSurfChainWithFunction(drawSurfs, RB_T_Shadow);
GL_Cull(CT_FRONT_SIDED);
if (r_shadowPolygonFactor.GetFloat() || r_shadowPolygonOffset.GetFloat()) {
qglDisable(GL_POLYGON_OFFSET_FILL);
}
if (glConfig.depthBoundsTestAvailable && r_useDepthBoundsTest.GetBool()) {
qglDisable(GL_DEPTH_BOUNDS_TEST_EXT);
}
qglEnableClientState(GL_TEXTURE_COORD_ARRAY);
qglStencilFunc(GL_GEQUAL, 128, 255);
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
}
/*
==================
RB_STD_FogAllLights
==================
*/
void RB_STD_FogAllLights( void ) {
viewLight_t *vLight;
if ( r_skipFogLights.GetBool() || r_showOverDraw.GetInteger() != 0
|| backEnd.viewDef->isXraySubview /* dont fog in xray mode*/
) {
return;
}
qglDisable( GL_STENCIL_TEST );
for ( vLight = backEnd.viewDef->viewLights ; vLight ; vLight = vLight->next ) {
backEnd.vLight = vLight;
if ( !vLight->lightShader->IsFogLight() && !vLight->lightShader->IsBlendLight() ) {
continue;
}
#if 0 // _D3XP disabled that
if ( r_ignore.GetInteger() ) {
// we use the stencil buffer to guarantee that no pixels will be
// double fogged, which happens in some areas that are thousands of
// units from the origin
backEnd.currentScissor = vLight->scissorRect;
if ( r_useScissor.GetBool() ) {
qglScissor( backEnd.viewDef->viewport.x1 + backEnd.currentScissor.x1,
backEnd.viewDef->viewport.y1 + backEnd.currentScissor.y1,
backEnd.currentScissor.x2 + 1 - backEnd.currentScissor.x1,
backEnd.currentScissor.y2 + 1 - backEnd.currentScissor.y1 );
}
qglClear( GL_STENCIL_BUFFER_BIT );
qglEnable( GL_STENCIL_TEST );
// only pass on the cleared stencil values
qglStencilFunc( GL_EQUAL, 128, 255 );
// when we pass the stencil test and depth test and are going to draw,
// increment the stencil buffer so we don't ever draw on that pixel again
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
}
#endif
if ( vLight->lightShader->IsFogLight() ) {
RB_FogPass( vLight->globalInteractions, vLight->localInteractions );
} else if ( vLight->lightShader->IsBlendLight() ) {
RB_BlendLight( vLight->globalInteractions, vLight->localInteractions );
}
qglDisable( GL_STENCIL_TEST );
}
qglEnable( GL_STENCIL_TEST );
}
/*
==================
GL_StencilOp
==================
*/
void GL_StencilOp (uint fail, uint zFail, uint zPass){
if (glState.stencilOpFail[0] == fail && glState.stencilOpFail[1] == fail && glState.stencilOpZFail[0] == zFail && glState.stencilOpZFail[1] == zFail && glState.stencilOpZPass[0] == zPass && glState.stencilOpZPass[1] == zPass)
return;
glState.stencilOpFail[0] = fail;
glState.stencilOpFail[1] = fail;
glState.stencilOpZFail[0] = zFail;
glState.stencilOpZFail[1] = zFail;
glState.stencilOpZPass[0] = zPass;
glState.stencilOpZPass[1] = zPass;
qglStencilOp(fail, zFail, zPass);
}
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 );
}
}
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);
}
/*
* RB_SetGLDefaults
*/
static void RB_SetGLDefaults( void )
{
int i;
qglClearColor( 1, 0, 0.5, 0.5 );
if( glConfig.stencilEnabled )
{
qglStencilMask( ( GLuint ) ~0 );
qglStencilFunc( GL_EQUAL, 128, 0xFF );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
}
// properly disable multitexturing at startup
for( i = glConfig.maxTextureUnits-1; i >= 0; i-- )
{
RB_SelectTextureUnit( i );
qglDisable( GL_TEXTURE_2D );
}
qglEnable( GL_TEXTURE_2D );
qglDisable( GL_CULL_FACE );
qglFrontFace( GL_CCW );
qglEnable( GL_SCISSOR_TEST );
qglDisable( GL_BLEND );
qglDisable( GL_ALPHA_TEST );
qglDepthFunc( GL_LEQUAL );
qglDepthMask( GL_FALSE );
qglDisable( GL_POLYGON_OFFSET_FILL );
qglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
qglEnable( GL_DEPTH_TEST );
qglShadeModel( GL_SMOOTH );
if( qglPolygonMode ) {
qglPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
}
qglFrontFace( GL_CCW );
rb.gl.state = 0;
rb.gl.frontFace = qfalse;
rb.gl.currentTMU = -1;
rb.gl.faceCull = 0;
rb.gl.polygonOffset[0] = rb.gl.polygonOffset[1] = 0;
memset( rb.gl.currentTextures, 0, sizeof( rb.gl.currentTextures ) );
}
/*
=============
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;
if(r_subviewStencil->integer)
{
assert(backEnd.stencil_level == cmd->viewParms.subview_level);
if(qtrue == backEnd.stencil_draw)
{
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
backEnd.stencil_draw = qfalse;
}
if(backEnd.stencil_level)
{
// pass if: backEnd.stencil_level <= stencil
qglStencilFunc(GL_LEQUAL, backEnd.stencil_level, ~0U);
backEnd.stencil_level--;
}
}
RB_RenderDrawSurfList( cmd->drawSurfs, cmd->numDrawSurfs );
if(r_subviewStencil->integer)
{
if(backEnd.stencil_test && 0 == backEnd.stencil_level)
{
qglDisable(GL_STENCIL_TEST);
backEnd.stencil_test = qfalse;
}
}
return (const void *)(cmd + 1);
}
/*
* RB_SetGLDefaults
*/
static void RB_SetGLDefaults( void )
{
if( glConfig.stencilBits )
{
qglStencilMask( ( GLuint ) ~0 );
qglStencilFunc( GL_EQUAL, 128, 0xFF );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
}
qglDisable( GL_CULL_FACE );
qglFrontFace( GL_CCW );
qglDisable( GL_BLEND );
qglDepthFunc( GL_LEQUAL );
qglDepthMask( GL_FALSE );
qglDisable( GL_POLYGON_OFFSET_FILL );
qglPolygonOffset( -1.0f, 0.0f ); // units will be handled by RB_DepthOffset
qglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
qglEnable( GL_DEPTH_TEST );
#ifndef GL_ES_VERSION_2_0
qglPolygonMode( GL_FRONT_AND_BACK, GL_FILL );
#endif
qglFrontFace( GL_CCW );
}
void RB_DoShadowTessEnd( vec3_t lightPos )
{
#ifndef _XBOX
int i;
int numTris;
vec3_t lightDir;
// we can only do this if we have enough space in the vertex buffers
if ( tess.numVertexes >= SHADER_MAX_VERTEXES / 2 ) {
return;
}
if ( glConfig.stencilBits < 4 ) {
return;
}
#if 1 //controlled method - try to keep shadows in range so they don't show through so much -rww
vec3_t worldxyz;
vec3_t entLight;
float groundDist;
VectorCopy( backEnd.currentEntity->lightDir, entLight );
entLight[2] = 0.0f;
VectorNormalize(entLight);
//Oh well, just cast them straight down no matter what onto the ground plane.
//This presets no chance of screwups and still looks better than a stupid
//shader blob.
VectorSet(lightDir, entLight[0]*0.3f, entLight[1]*0.3f, 1.0f);
// project vertexes away from light direction
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
//add or.origin to vert xyz to end up with world oriented coord, then figure
//out the ground pos for the vert to project the shadow volume to
VectorAdd(tess.xyz[i], backEnd.ori.origin, worldxyz);
groundDist = worldxyz[2] - backEnd.currentEntity->e.shadowPlane;
groundDist += 16.0f; //fudge factor
VectorMA( tess.xyz[i], -groundDist, lightDir, tess.xyz[i+tess.numVertexes] );
}
#else
if (lightPos)
{
for ( i = 0 ; i < tess.numVertexes ; i++ )
{
tess.xyz[i+tess.numVertexes][0] = tess.xyz[i][0]+(( tess.xyz[i][0]-lightPos[0] )*128.0f);
tess.xyz[i+tess.numVertexes][1] = tess.xyz[i][1]+(( tess.xyz[i][1]-lightPos[1] )*128.0f);
tess.xyz[i+tess.numVertexes][2] = tess.xyz[i][2]+(( tess.xyz[i][2]-lightPos[2] )*128.0f);
}
}
else
{
VectorCopy( backEnd.currentEntity->lightDir, lightDir );
// project vertexes away from light direction
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
VectorMA( tess.xyz[i], -512, lightDir, tess.xyz[i+tess.numVertexes] );
}
}
#endif
// decide which triangles face the light
memset( numEdgeDefs, 0, 4 * tess.numVertexes );
numTris = tess.numIndexes / 3;
for ( i = 0 ; i < numTris ; i++ ) {
int i1, i2, i3;
vec3_t d1, d2, normal;
float *v1, *v2, *v3;
float d;
i1 = tess.indexes[ i*3 + 0 ];
i2 = tess.indexes[ i*3 + 1 ];
i3 = tess.indexes[ i*3 + 2 ];
v1 = tess.xyz[ i1 ];
v2 = tess.xyz[ i2 ];
v3 = tess.xyz[ i3 ];
if (!lightPos)
{
VectorSubtract( v2, v1, d1 );
VectorSubtract( v3, v1, d2 );
CrossProduct( d1, d2, normal );
d = DotProduct( normal, lightDir );
}
else
{
float planeEq[4];
planeEq[0] = v1[1]*(v2[2]-v3[2]) + v2[1]*(v3[2]-v1[2]) + v3[1]*(v1[2]-v2[2]);
planeEq[1] = v1[2]*(v2[0]-v3[0]) + v2[2]*(v3[0]-v1[0]) + v3[2]*(v1[0]-v2[0]);
planeEq[2] = v1[0]*(v2[1]-v3[1]) + v2[0]*(v3[1]-v1[1]) + v3[0]*(v1[1]-v2[1]);
planeEq[3] = -( v1[0]*( v2[1]*v3[2] - v3[1]*v2[2] ) +
v2[0]*(v3[1]*v1[2] - v1[1]*v3[2]) +
v3[0]*(v1[1]*v2[2] - v2[1]*v1[2]) );
d = planeEq[0]*lightPos[0]+
planeEq[1]*lightPos[1]+
planeEq[2]*lightPos[2]+
planeEq[3];
}
if ( d > 0 ) {
facing[ i ] = 1;
} else {
facing[ i ] = 0;
}
// create the edges
R_AddEdgeDef( i1, i2, facing[ i ] );
R_AddEdgeDef( i2, i3, facing[ i ] );
R_AddEdgeDef( i3, i1, facing[ i ] );
}
GL_Bind( tr.whiteImage );
//qglEnable( GL_CULL_FACE );
GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
#ifndef _DEBUG_STENCIL_SHADOWS
qglColor3f( 0.2f, 0.2f, 0.2f );
// don't write to the color buffer
qglColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_ALWAYS, 1, 255 );
#else
qglColor3f( 1.0f, 0.0f, 0.0f );
qglPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
//qglDisable(GL_DEPTH_TEST);
#endif
#ifdef _STENCIL_REVERSE
qglDepthFunc(GL_LESS);
//now using the Carmack Reverse<tm> -rww
if ( backEnd.viewParms.isMirror ) {
//qglCullFace( GL_BACK );
GL_Cull(CT_BACK_SIDED);
qglStencilOp( GL_KEEP, GL_INCR, GL_KEEP );
R_RenderShadowEdges();
//qglCullFace( GL_FRONT );
GL_Cull(CT_FRONT_SIDED);
qglStencilOp( GL_KEEP, GL_DECR, GL_KEEP );
R_RenderShadowEdges();
} else {
//qglCullFace( GL_FRONT );
GL_Cull(CT_FRONT_SIDED);
qglStencilOp( GL_KEEP, GL_INCR, GL_KEEP );
R_RenderShadowEdges();
//qglCullFace( GL_BACK );
GL_Cull(CT_BACK_SIDED);
qglStencilOp( GL_KEEP, GL_DECR, GL_KEEP );
R_RenderShadowEdges();
}
qglDepthFunc(GL_LEQUAL);
#else
// mirrors have the culling order reversed
if ( backEnd.viewParms.isMirror ) {
qglCullFace( GL_FRONT );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
qglCullFace( GL_BACK );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
R_RenderShadowEdges();
} else {
qglCullFace( GL_BACK );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
qglCullFace( GL_FRONT );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
R_RenderShadowEdges();
}
#endif
// reenable writing to the color buffer
qglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
#ifdef _DEBUG_STENCIL_SHADOWS
qglPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
#endif
#endif // _XBOX
}
/*
====================
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;
}
}
}
/*
=================
RB_ShadowTessEnd
triangleFromEdge[ v1 ][ v2 ]
set triangle from edge( v1, v2, tri )
if ( facing[ triangleFromEdge[ v1 ][ v2 ] ] && !facing[ triangleFromEdge[ v2 ][ v1 ] ) {
}
=================
*/
void RB_ShadowTessEnd( void ) {
int i;
int numTris;
vec3_t lightDir;
// we can only do this if we have enough space in the vertex buffers
if ( tess.numVertexes >= SHADER_MAX_VERTEXES / 2 ) {
return;
}
if ( glConfig.stencilBits < 4 ) {
return;
}
VectorCopy( backEnd.currentEntity->lightDir, lightDir );
// project vertexes away from light direction
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
VectorMA( tess.xyz[i], -512, lightDir, tess.xyz[i + tess.numVertexes] );
}
// decide which triangles face the light
memset( numEdgeDefs, 0, 4 * tess.numVertexes );
numTris = tess.numIndexes / 3;
for ( i = 0 ; i < numTris ; i++ ) {
int i1, i2, i3;
vec3_t d1, d2, normal;
float *v1, *v2, *v3;
float d;
i1 = tess.indexes[ i * 3 + 0 ];
i2 = tess.indexes[ i * 3 + 1 ];
i3 = tess.indexes[ i * 3 + 2 ];
v1 = tess.xyz[ i1 ];
v2 = tess.xyz[ i2 ];
v3 = tess.xyz[ i3 ];
VectorSubtract( v2, v1, d1 );
VectorSubtract( v3, v1, d2 );
CrossProduct( d1, d2, normal );
d = DotProduct( normal, lightDir );
if ( d > 0 ) {
facing[ i ] = 1;
} else {
facing[ i ] = 0;
}
// create the edges
R_AddEdgeDef( i1, i2, facing[ i ] );
R_AddEdgeDef( i2, i3, facing[ i ] );
R_AddEdgeDef( i3, i1, facing[ i ] );
}
// draw the silhouette edges
GL_Bind( tr.whiteImage );
qglEnable( GL_CULL_FACE );
GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
qglColor3f( 0.2f, 0.2f, 0.2f );
// don't write to the color buffer
qglColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_ALWAYS, 1, 255 );
// mirrors have the culling order reversed
if ( backEnd.viewParms.isMirror ) {
qglCullFace( GL_FRONT );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
qglCullFace( GL_BACK );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
R_RenderShadowEdges();
} else {
qglCullFace( GL_BACK );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
qglCullFace( GL_FRONT );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
R_RenderShadowEdges();
}
// reenable writing to the color buffer
qglColorMask( GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
}
/*
=================
RB_ShadowFinish
Darken everything that is is a shadow volume.
We have to delay this until everything has been shadowed,
because otherwise shadows from different body parts would
overlap and double darken.
=================
*/
void RB_ShadowFinish( void ) {
if ( r_shadows->integer != 2 ) {
return;
}
if ( glConfig.stencilBits < 4 ) {
return;
}
#ifdef _DEBUG_STENCIL_SHADOWS
return;
#endif
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_NOTEQUAL, 0, 255 );
qglStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
bool planeZeroBack = false;
if (qglIsEnabled(GL_CLIP_PLANE0))
{
planeZeroBack = true;
qglDisable (GL_CLIP_PLANE0);
}
GL_Cull(CT_TWO_SIDED);
//qglDisable (GL_CULL_FACE);
GL_Bind( tr.whiteImage );
qglPushMatrix();
qglLoadIdentity ();
// qglColor3f( 0.6f, 0.6f, 0.6f );
// GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO );
// qglColor3f( 1, 0, 0 );
// GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
qglColor4f( 0.0f, 0.0f, 0.0f, 0.5f );
//GL_State( GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
GL_State( GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
#ifdef HAVE_GLES
GLfloat vtx[] = {
-100, 100, -10,
100, 100, -10,
100, -100, -10,
-100, -100, -10
};
GLboolean text = qglIsEnabled(GL_TEXTURE_COORD_ARRAY);
GLboolean glcol = qglIsEnabled(GL_COLOR_ARRAY);
if (text)
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
if (glcol)
qglDisableClientState( GL_COLOR_ARRAY );
qglVertexPointer ( 3, GL_FLOAT, 0, vtx );
qglDrawArrays( GL_TRIANGLE_FAN, 0, 4 );
if (text)
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
if (glcol)
qglEnableClientState( GL_COLOR_ARRAY );
#else
qglBegin( GL_QUADS );
qglVertex3f( -100, 100, -10 );
qglVertex3f( 100, 100, -10 );
qglVertex3f( 100, -100, -10 );
qglVertex3f( -100, -100, -10 );
qglEnd ();
#endif
qglColor4f(1,1,1,1);
qglDisable( GL_STENCIL_TEST );
if (planeZeroBack)
{
qglEnable (GL_CLIP_PLANE0);
}
qglPopMatrix();
}
/*
=================
RB_ShadowTessEnd
triangleFromEdge[ v1 ][ v2 ]
set triangle from edge( v1, v2, tri )
if ( facing[ triangleFromEdge[ v1 ][ v2 ] ] && !facing[ triangleFromEdge[ v2 ][ v1 ] ) {
}
=================
*/
void RB_ShadowTessEnd( void ) {
int i;
int numTris;
vec3_t lightDir;
GLboolean rgba[4];
// we can only do this if we have enough space in the vertex buffers
if ( tess.numVertexes >= SHADER_MAX_VERTEXES / 2 ) {
return;
}
if ( glConfig.stencilBits < 4 ) {
return;
}
VectorCopy( backEnd.currentEntity->lightDir, lightDir );
// project vertexes away from light direction
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
VectorMA( tess.xyz[i], -512, lightDir, tess.xyz[i+tess.numVertexes] );
}
// decide which triangles face the light
Com_Memset( numEdgeDefs, 0, 4 * tess.numVertexes );
numTris = tess.numIndexes / 3;
for ( i = 0 ; i < numTris ; i++ ) {
int i1, i2, i3;
vec3_t d1, d2, normal;
float *v1, *v2, *v3;
float d;
i1 = tess.indexes[ i*3 + 0 ];
i2 = tess.indexes[ i*3 + 1 ];
i3 = tess.indexes[ i*3 + 2 ];
v1 = tess.xyz[ i1 ];
v2 = tess.xyz[ i2 ];
v3 = tess.xyz[ i3 ];
VectorSubtract( v2, v1, d1 );
VectorSubtract( v3, v1, d2 );
CrossProduct( d1, d2, normal );
d = DotProduct( normal, lightDir );
if ( d > 0 ) {
facing[ i ] = 1;
} else {
facing[ i ] = 0;
}
// create the edges
R_AddEdgeDef( i1, i2, facing[ i ] );
R_AddEdgeDef( i2, i3, facing[ i ] );
R_AddEdgeDef( i3, i1, facing[ i ] );
}
// draw the silhouette edges
GL_Bind( tr.whiteImage );
qglEnable( GL_CULL_FACE );
GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
qglColor3f( 0.2f, 0.2f, 0.2f );
// don't write to the color buffer
qglGetBooleanv(GL_COLOR_WRITEMASK, rgba);
qglColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_ALWAYS, 1, 255 );
#ifdef HAVE_GLES
qglVertexPointer (3, GL_FLOAT, 16, tess.xyz);
GLboolean text = qglIsEnabled(GL_TEXTURE_COORD_ARRAY);
GLboolean glcol = qglIsEnabled(GL_COLOR_ARRAY);
if (text)
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );
if (glcol)
qglDisableClientState( GL_COLOR_ARRAY );
#endif
// mirrors have the culling order reversed
if ( backEnd.viewParms.isMirror ) {
qglCullFace( GL_FRONT );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
qglCullFace( GL_BACK );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
#ifdef HAVE_GLES
qglDrawElements(GL_TRIANGLES, idx, GL_UNSIGNED_SHORT, indexes);
#else
R_RenderShadowEdges();
#endif
} else {
qglCullFace( GL_BACK );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
qglCullFace( GL_FRONT );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
#ifdef HAVE_GLES
qglDrawElements(GL_TRIANGLES, idx, GL_UNSIGNED_SHORT, indexes);
#else
R_RenderShadowEdges();
#endif
}
#ifdef HAVE_GLES
if (text)
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
if (glcol)
qglEnableClientState( GL_COLOR_ARRAY );
#endif
// reenable writing to the color buffer
qglColorMask(rgba[0], rgba[1], rgba[2], rgba[3]);
}
void RB_DistortionFill(void)
{
float alpha = tr_distortionAlpha;
float spost = 0.0f;
float spost2 = 0.0f;
if ( glConfig.stencilBits < 4 )
{
return;
}
//ok, cap the stupid thing now I guess
if (!tr_distortionPrePost)
{
RB_CaptureScreenImage();
}
qglEnable(GL_STENCIL_TEST);
qglStencilFunc(GL_NOTEQUAL, 0, 0xFFFFFFFF);
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
qglDisable (GL_CLIP_PLANE0);
GL_Cull( CT_TWO_SIDED );
//reset the view matrices and go into ortho mode
qglMatrixMode(GL_PROJECTION);
qglPushMatrix();
qglLoadIdentity();
qglOrtho(0, glConfig.vidWidth, glConfig.vidHeight, 32, -1, 1);
qglMatrixMode(GL_MODELVIEW);
qglPushMatrix();
qglLoadIdentity();
if (tr_distortionStretch)
{ //override
spost = tr_distortionStretch;
spost2 = tr_distortionStretch;
}
else
{ //do slow stretchy effect
spost = sin(tr.refdef.time*0.0005f);
if (spost < 0.0f)
{
spost = -spost;
}
spost *= 0.2f;
spost2 = sin(tr.refdef.time*0.0005f);
if (spost2 < 0.0f)
{
spost2 = -spost2;
}
spost2 *= 0.08f;
}
if (alpha != 1.0f)
{ //blend
GL_State(GLS_SRCBLEND_SRC_ALPHA|GLS_DSTBLEND_SRC_ALPHA);
}
else
{ //be sure to reset the draw state
GL_State(0);
}
#ifdef _XBOX
qglBeginEXT(GL_QUADS, 4, 0, 0, 4, 0);
#else
qglBegin(GL_QUADS);
#endif // _XBOX
qglColor4f(1.0f, 1.0f, 1.0f, alpha);
qglTexCoord2f(0+spost2, 1-spost);
qglVertex2f(0, 0);
qglTexCoord2f(0+spost2, 0+spost);
qglVertex2f(0, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 0+spost);
qglVertex2f(glConfig.vidWidth, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 1-spost);
qglVertex2f(glConfig.vidWidth, 0);
qglEnd();
if (tr_distortionAlpha == 1.0f && tr_distortionStretch == 0.0f)
{ //no overrides
if (tr_distortionNegate)
{ //probably the crazy alternate saber trail
alpha = 0.8f;
GL_State(GLS_SRCBLEND_ZERO|GLS_DSTBLEND_ONE_MINUS_SRC_COLOR);
}
else
{
alpha = 0.5f;
GL_State(GLS_SRCBLEND_SRC_ALPHA|GLS_DSTBLEND_SRC_ALPHA);
}
spost = sin(tr.refdef.time*0.0008f);
if (spost < 0.0f)
{
spost = -spost;
}
spost *= 0.08f;
spost2 = sin(tr.refdef.time*0.0008f);
if (spost2 < 0.0f)
{
spost2 = -spost2;
}
spost2 *= 0.2f;
#ifdef _XBOX
qglBeginEXT(GL_QUADS, 4, 0, 0, 4, 0);
#else
qglBegin(GL_QUADS);
#endif // _XBOX
qglColor4f(1.0f, 1.0f, 1.0f, alpha);
qglTexCoord2f(0+spost2, 1-spost);
qglVertex2f(0, 0);
qglTexCoord2f(0+spost2, 0+spost);
qglVertex2f(0, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 0+spost);
qglVertex2f(glConfig.vidWidth, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 1-spost);
qglVertex2f(glConfig.vidWidth, 0);
qglEnd();
}
//pop the view matrices back
qglMatrixMode(GL_PROJECTION);
qglPopMatrix();
qglMatrixMode(GL_MODELVIEW);
qglPopMatrix();
qglDisable( GL_STENCIL_TEST );
}
/*
=====================
RB_T_Shadow
the shadow volumes face INSIDE
=====================
*/
static void RB_T_Shadow( const drawSurf_t *surf ) {
const srfTriangles_t *tri;
// set the light position if we are using a vertex program to project the rear surfaces
if ( tr.backEndRendererHasVertexPrograms && r_useShadowVertexProgram.GetBool()
&& surf->space != backEnd.currentSpace ) {
idVec4 localLight;
R_GlobalPointToLocal( surf->space->modelMatrix, backEnd.vLight->globalLightOrigin, localLight.ToVec3() );
localLight.w = 0.0f;
qglProgramEnvParameter4fvARB( GL_VERTEX_PROGRAM_ARB, PP_LIGHT_ORIGIN, localLight.ToFloatPtr() );
}
tri = surf->geo;
if ( !tri->shadowCache ) {
return;
}
qglVertexPointer( 4, GL_FLOAT, sizeof( shadowCache_t ), vertexCache.Position(tri->shadowCache) );
// we always draw the sil planes, but we may not need to draw the front or rear caps
int numIndexes;
bool external = false;
if ( !r_useExternalShadows.GetInteger() ) {
numIndexes = tri->numIndexes;
} else if ( r_useExternalShadows.GetInteger() == 2 ) { // force to no caps for testing
numIndexes = tri->numShadowIndexesNoCaps;
} else if ( !(surf->dsFlags & DSF_VIEW_INSIDE_SHADOW) ) {
// if we aren't inside the shadow projection, no caps are ever needed needed
numIndexes = tri->numShadowIndexesNoCaps;
external = true;
} else if ( !backEnd.vLight->viewInsideLight && !(surf->geo->shadowCapPlaneBits & SHADOW_CAP_INFINITE) ) {
// if we are inside the shadow projection, but outside the light, and drawing
// a non-infinite shadow, we can skip some caps
if ( backEnd.vLight->viewSeesShadowPlaneBits & surf->geo->shadowCapPlaneBits ) {
// we can see through a rear cap, so we need to draw it, but we can skip the
// caps on the actual surface
numIndexes = tri->numShadowIndexesNoFrontCaps;
} else {
// we don't need to draw any caps
numIndexes = tri->numShadowIndexesNoCaps;
}
external = true;
} else {
// must draw everything
numIndexes = tri->numIndexes;
}
// set depth bounds
if( glConfig.depthBoundsTestAvailable && r_useDepthBoundsTest.GetBool() ) {
qglDepthBoundsEXT( surf->scissorRect.zmin, surf->scissorRect.zmax );
}
// debug visualization
if ( r_showShadows.GetInteger() ) {
if ( r_showShadows.GetInteger() == 3 ) {
if ( external ) {
qglColor3f( 0.1/backEnd.overBright, 1/backEnd.overBright, 0.1/backEnd.overBright );
} else {
// these are the surfaces that require the reverse
qglColor3f( 1/backEnd.overBright, 0.1/backEnd.overBright, 0.1/backEnd.overBright );
}
} else {
// draw different color for turboshadows
if ( surf->geo->shadowCapPlaneBits & SHADOW_CAP_INFINITE ) {
if ( numIndexes == tri->numIndexes ) {
qglColor3f( 1/backEnd.overBright, 0.1/backEnd.overBright, 0.1/backEnd.overBright );
} else {
qglColor3f( 1/backEnd.overBright, 0.4/backEnd.overBright, 0.1/backEnd.overBright );
}
} else {
if ( numIndexes == tri->numIndexes ) {
qglColor3f( 0.1/backEnd.overBright, 1/backEnd.overBright, 0.1/backEnd.overBright );
} else if ( numIndexes == tri->numShadowIndexesNoFrontCaps ) {
qglColor3f( 0.1/backEnd.overBright, 1/backEnd.overBright, 0.6/backEnd.overBright );
} else {
qglColor3f( 0.6/backEnd.overBright, 1/backEnd.overBright, 0.1/backEnd.overBright );
}
}
}
qglStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
qglDisable( GL_STENCIL_TEST );
GL_Cull( CT_TWO_SIDED );
RB_DrawShadowElementsWithCounters( tri, numIndexes );
GL_Cull( CT_FRONT_SIDED );
qglEnable( GL_STENCIL_TEST );
return;
}
// patent-free work around
if ( !external ) {
// "preload" the stencil buffer with the number of volumes
// that get clipped by the near or far clip plane
qglStencilOp( GL_KEEP, tr.stencilDecr, tr.stencilDecr );
GL_Cull( CT_FRONT_SIDED );
RB_DrawShadowElementsWithCounters( tri, numIndexes );
qglStencilOp( GL_KEEP, tr.stencilIncr, tr.stencilIncr );
GL_Cull( CT_BACK_SIDED );
RB_DrawShadowElementsWithCounters( tri, numIndexes );
}
// traditional depth-pass stencil shadows
qglStencilOp( GL_KEEP, GL_KEEP, tr.stencilIncr );
GL_Cull( CT_FRONT_SIDED );
RB_DrawShadowElementsWithCounters( tri, numIndexes );
qglStencilOp( GL_KEEP, GL_KEEP, tr.stencilDecr );
GL_Cull( CT_BACK_SIDED );
RB_DrawShadowElementsWithCounters( tri, numIndexes );
}
/*
====================
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;
}
/*
====================
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;
}
void RB_DistortionFill(void)
{
float alpha = tr_distortionAlpha;
float spost = 0.0f;
float spost2 = 0.0f;
if ( glConfig.stencilBits < 4 )
{
return;
}
//ok, cap the stupid thing now I guess
if (!tr_distortionPrePost)
{
RB_CaptureScreenImage();
}
qglEnable(GL_STENCIL_TEST);
qglStencilFunc(GL_NOTEQUAL, 0, 0xFFFFFFFF);
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
qglDisable (GL_CLIP_PLANE0);
GL_Cull( CT_TWO_SIDED );
//reset the view matrices and go into ortho mode
qglMatrixMode(GL_PROJECTION);
qglPushMatrix();
qglLoadIdentity();
qglOrtho(0, glConfig.vidWidth, glConfig.vidHeight, 32, -1, 1);
qglMatrixMode(GL_MODELVIEW);
qglPushMatrix();
qglLoadIdentity();
if (tr_distortionStretch)
{ //override
spost = tr_distortionStretch;
spost2 = tr_distortionStretch;
}
else
{ //do slow stretchy effect
spost = sin(tr.refdef.time * 0.0005 + tr.refdef.timeFraction * 0.0005);
if (spost < 0.0f)
{
spost = -spost;
}
spost *= 0.2f;
spost2 = sin(tr.refdef.time * 0.0005 + tr.refdef.timeFraction * 0.0005);
if (spost2 < 0.0f)
{
spost2 = -spost2;
}
spost2 *= 0.08f;
}
if (alpha != 1.0f)
{ //blend
GL_State(GLS_SRCBLEND_SRC_ALPHA|GLS_DSTBLEND_SRC_ALPHA);
}
else
{ //be sure to reset the draw state
GL_State(0);
}
#ifdef HAVE_GLES
qglColor4f(1.0f, 1.0f, 1.0f, alpha);
GLboolean text = qglIsEnabled(GL_TEXTURE_COORD_ARRAY);
GLboolean glcol = qglIsEnabled(GL_COLOR_ARRAY);
if (!text)
qglEnableClientState(GL_TEXTURE_COORD_ARRAY);
if (glcol)
qglDisableClientState(GL_COLOR_ARRAY);
GLfloat tex[] = {
0 + spost2, 1 - spost,
0 + spost2, 0 + spost,
1 - spost2, 0 + spost,
1 - spost2, 1 - spost
};
GLfloat vtx[] = {
0, 0,
0, glConfig.vidHeight,
glConfig.vidWidth, glConfig.vidHeight,
glConfig.vidWidth, 0
};
qglTexCoordPointer(2, GL_FLOAT, 0, tex);
qglVertexPointer(2, GL_FLOAT, 0, vtx);
qglDrawArrays(GL_TRIANGLE_FAN, 0, 4);
/* if (glcol)
qglEnableClientState( GL_COLOR_ARRAY );
if (!text)
qglDisableClientState( GL_TEXTURE_COORD_ARRAY );*/
#else
qglBegin(GL_QUADS);
qglColor4f(1.0f, 1.0f, 1.0f, alpha);
qglTexCoord2f(0+spost2, 1-spost);
qglVertex2f(0, 0);
qglTexCoord2f(0+spost2, 0+spost);
qglVertex2f(0, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 0+spost);
qglVertex2f(glConfig.vidWidth, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 1-spost);
qglVertex2f(glConfig.vidWidth, 0);
qglEnd();
#endif
if (tr_distortionAlpha == 1.0f && tr_distortionStretch == 0.0f)
{ //no overrides
if (tr_distortionNegate)
{ //probably the crazy alternate saber trail
alpha = 0.8f;
GL_State(GLS_SRCBLEND_ZERO|GLS_DSTBLEND_ONE_MINUS_SRC_COLOR);
}
else
{
alpha = 0.5f;
GL_State(GLS_SRCBLEND_SRC_ALPHA|GLS_DSTBLEND_SRC_ALPHA);
}
spost = sin(tr.refdef.time * 0.0008 + tr.refdef.timeFraction * 0.0008);
if (spost < 0.0f)
{
spost = -spost;
}
spost *= 0.08f;
spost2 = sin(tr.refdef.time * 0.0008 + tr.refdef.timeFraction * 0.0008);
if (spost2 < 0.0f)
{
spost2 = -spost2;
}
spost2 *= 0.2f;
#ifdef HAVE_GLES
qglColor4f(1.0f, 1.0f, 1.0f, alpha);
/* GLboolean text = qglIsEnabled(GL_TEXTURE_COORD_ARRAY);
GLboolean glcol = qglIsEnabled(GL_COLOR_ARRAY);
if (!text)
qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
if (glcol)
qglDisableClientState( GL_COLOR_ARRAY );*/
GLfloat tex[] = {
0 + spost2, 1 - spost,
0 + spost2, 0 + spost,
1 - spost2, 0 + spost,
1 - spost2, 1 - spost
};
GLfloat vtx[] = {
0, 0,
0, glConfig.vidHeight,
glConfig.vidWidth, glConfig.vidHeight,
glConfig.vidWidth, 0
};
qglTexCoordPointer(2, GL_FLOAT, 0, tex);
qglVertexPointer(2, GL_FLOAT, 0, vtx);
qglDrawArrays(GL_TRIANGLE_FAN, 0, 4);
#else
qglBegin(GL_QUADS);
qglColor4f(1.0f, 1.0f, 1.0f, alpha);
qglTexCoord2f(0+spost2, 1-spost);
qglVertex2f(0, 0);
qglTexCoord2f(0+spost2, 0+spost);
qglVertex2f(0, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 0+spost);
qglVertex2f(glConfig.vidWidth, glConfig.vidHeight);
qglTexCoord2f(1-spost2, 1-spost);
qglVertex2f(glConfig.vidWidth, 0);
qglEnd();
#endif
}
#ifdef HAVE_GLES
if (glcol)
qglEnableClientState(GL_COLOR_ARRAY);
if (!text)
qglDisableClientState(GL_TEXTURE_COORD_ARRAY);
#endif
//pop the view matrices back
qglMatrixMode(GL_PROJECTION);
qglPopMatrix();
qglMatrixMode(GL_MODELVIEW);
qglPopMatrix();
qglDisable( GL_STENCIL_TEST );
}
void
R_DrawAliasShadow ( dmdl_t *paliashdr, int posenum )
{
#if defined(VERTEX_ARRAYS)
uint16_t total;
GLenum type;
#endif
int *order;
vec3_t point;
float height, lheight;
int count;
lheight = currententity->origin [ 2 ] - lightspot [ 2 ];
height = 0;
order = (int *) ( (byte *) paliashdr + paliashdr->ofs_glcmds );
height = -lheight + 0.1f;
/* stencilbuffer shadows */
if ( have_stencil && gl_stencilshadow->value )
{
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_EQUAL, 1, 2 );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
}
while ( 1 )
{
/* get the vertex count and primitive type */
count = *order++;
if ( !count )
{
break; /* done */
}
if ( count < 0 )
{
count = -count;
#if defined(VERTEX_ARRAYS)
type = GL_TRIANGLE_FAN;
#else
qglBegin( GL_TRIANGLE_FAN );
#endif
}
else
{
#if defined(VERTEX_ARRAYS)
type = GL_TRIANGLE_STRIP;
#else
qglBegin( GL_TRIANGLE_STRIP );
#endif
}
#if defined(VERTEX_ARRAYS)
total = count;
GLfloat vtx[3*total];
uint32_t index_vtx = 0;
#endif
do
{
/* normals and vertexes come from the frame list */
memcpy( point, s_lerped [ order [ 2 ] ], sizeof ( point ) );
point [ 0 ] -= shadevector [ 0 ] * ( point [ 2 ] + lheight );
point [ 1 ] -= shadevector [ 1 ] * ( point [ 2 ] + lheight );
point [ 2 ] = height;
#if defined(VERTEX_ARRAYS)
vtx[index_vtx++] = point [ 0 ];
vtx[index_vtx++] = point [ 1 ];
vtx[index_vtx++] = point [ 2 ];
#else
qglVertex3fv( point );
#endif
order += 3;
}
while ( --count );
#if defined(VERTEX_ARRAYS)
qglEnableClientState( GL_VERTEX_ARRAY );
qglVertexPointer( 3, GL_FLOAT, 0, vtx );
qglDrawArrays( type, 0, total );
qglDisableClientState( GL_VERTEX_ARRAY );
#else
qglEnd();
#endif
}
/* stencilbuffer shadows */
if ( have_stencil && gl_stencilshadow->value )
{
qglDisable( GL_STENCIL_TEST );
}
}
/*
==================
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");
}
/*
=================
RB_ProjectionShadowDeform
=================
*/
void RB_ProjectionShadowDeform( void ) {
#ifdef _XBOX
float shadowMat[4][4];
vec3_t light, ground;
float d, dot;
ground[0] = backEnd.ori.axis[0][2];
ground[1] = backEnd.ori.axis[1][2];
ground[2] = backEnd.ori.axis[2][2];
d = backEnd.ori.origin[2] - backEnd.currentEntity->e.shadowPlane;
light[0] = backEnd.currentEntity->lightDir[0];
light[1] = backEnd.currentEntity->lightDir[1];
light[2] = backEnd.currentEntity->lightDir[2];
dot = ground[0] * light[0] +
ground[1] * light[1] +
ground[2] * light[2];
// don't let the shadows get too long or go negative
if ( dot < 0.5 )
{
VectorMA( light, (0.5 - dot), ground, light );
dot = DotProduct( light, ground );
}
shadowMat[0][0] = dot - light[0] * ground[0];
shadowMat[1][0] = 0.f - light[0] * ground[1];
shadowMat[2][0] = 0.f - light[0] * ground[2];
shadowMat[3][0] = 0.f - light[0] * d;
shadowMat[0][1] = 0.f - light[1] * ground[0];
shadowMat[1][1] = dot - light[1] * ground[1];
shadowMat[2][1] = 0.f - light[1] * ground[2];
shadowMat[3][1] = 0.f - light[1] * d;
shadowMat[0][2] = 0.f - light[2] * ground[0];
shadowMat[1][2] = 0.f - light[2] * ground[1];
shadowMat[2][2] = dot - light[2] * ground[2];
shadowMat[3][2] = 0.f - light[2] * d;
shadowMat[0][3] = 0.f;
shadowMat[1][3] = 0.f;
shadowMat[2][3] = 0.f;
shadowMat[3][3] = dot;
qglMatrixMode(GL_MODELVIEW);
qglMultMatrixf(&shadowMat[0][0]);
// Turn on stenciling
// This is done to prevent overlapping shadow artifacts
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_NOTEQUAL, 0x1, 0xffffffff );
qglStencilMask( 0xffffffff );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
#else
float *xyz;
int i;
float h;
vec3_t ground;
vec3_t light;
float groundDist;
float d;
vec3_t lightDir;
xyz = ( float * ) tess.xyz;
ground[0] = backEnd.ori.axis[0][2];
ground[1] = backEnd.ori.axis[1][2];
ground[2] = backEnd.ori.axis[2][2];
groundDist = backEnd.ori.origin[2] - backEnd.currentEntity->e.shadowPlane;
VectorCopy( backEnd.currentEntity->lightDir, lightDir );
d = DotProduct( lightDir, ground );
// don't let the shadows get too long or go negative
if ( d < 0.5 ) {
VectorMA( lightDir, (0.5 - d), ground, lightDir );
d = DotProduct( lightDir, ground );
}
d = 1.0 / d;
light[0] = lightDir[0] * d;
light[1] = lightDir[1] * d;
light[2] = lightDir[2] * d;
for ( i = 0; i < tess.numVertexes; i++, xyz += 4 ) {
h = DotProduct( xyz, ground ) + groundDist;
xyz[0] -= light[0] * h;
xyz[1] -= light[1] * h;
xyz[2] -= light[2] * h;
}
#endif // _XBOX
}
void GL_DrawAliasShadow (entity_t *e, dmdl_t *paliashdr, int posenum)
{
dtrivertx_t *verts;
int *order;
vec3_t point;
float height, lheight;
int count;
daliasframe_t *frame;
lheight = currententity->origin[2] - lightspot[2];
frame = (daliasframe_t *)((byte *)paliashdr + paliashdr->ofs_frames
+ currententity->frame * paliashdr->framesize);
verts = frame->verts;
// height = 0;
order = (int *)((byte *)paliashdr + paliashdr->ofs_glcmds);
height = -lheight + 0.1f; // was 1.0f, lowered shadows to ground more - MrG
// Knightmare- don't draw shadow above entity
if ((currententity->origin[2]+height) > currententity->origin[2])
return;
// Knightmare- don't draw shadows above view origin
if (r_newrefdef.vieworg[2] < (currententity->origin[2] + height))
return;
qglPushMatrix ();
R_RotateForEntity (e, false);
qglDisable (GL_TEXTURE_2D);
qglEnable (GL_BLEND);
qglColor4f (0, 0, 0, gl_shadowalpha->value); // was 0.5
// Knightmare- Stencil shadows by MrG
if (gl_config.have_stencil)
{
qglEnable(GL_STENCIL_TEST);
qglStencilFunc(GL_EQUAL, 1, 2);
qglStencilOp(GL_KEEP,GL_KEEP,GL_INCR);
}
// End Stencil shadows - MrG
while (1)
{
// get the vertex count and primitive type
count = *order++;
if (!count)
break; // done
if (count < 0)
{
count = -count;
qglBegin (GL_TRIANGLE_FAN);
}
else
qglBegin (GL_TRIANGLE_STRIP);
do
{
// normals and vertexes come from the frame list
/*
point[0] = verts[order[2]].v[0] * frame->scale[0] + frame->translate[0];
point[1] = verts[order[2]].v[1] * frame->scale[1] + frame->translate[1];
point[2] = verts[order[2]].v[2] * frame->scale[2] + frame->translate[2];
*/
memcpy( point, s_lerped[order[2]], sizeof( point ) );
point[0] -= shadevector[0]*(point[2]+lheight);
point[1] -= shadevector[1]*(point[2]+lheight);
point[2] = height;
// height -= 0.001;
qglVertex3fv (point);
order += 3;
// verts++;
} while (--count);
qglEnd ();
}
// Knightmare- disable Stencil shadows
if (gl_config.have_stencil)
qglDisable(GL_STENCIL_TEST);
qglColor4f (1,1,1,1);
qglEnable (GL_TEXTURE_2D);
qglDisable (GL_BLEND);
qglPopMatrix ();
}
/*
====================
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;
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;
}
}
}
/*
=================
RB_ShadowTessEnd
triangleFromEdge[ v1 ][ v2 ]
set triangle from edge( v1, v2, tri )
if ( facing[ triangleFromEdge[ v1 ][ v2 ] ] && !facing[ triangleFromEdge[ v2 ][ v1 ] ) {
}
=================
*/
void RB_ShadowTessEnd( void ) {
int i;
int numTris;
vec3_t lightDir;
GLboolean rgba[4];
if ( glConfig.stencilBits < 4 ) {
return;
}
VectorCopy( backEnd.currentEntity->lightDir, lightDir );
// project vertexes away from light direction
for ( i = 0 ; i < tess.numVertexes ; i++ ) {
VectorMA( tess.xyz[i], -512, lightDir, shadowXyz[i] );
}
// decide which triangles face the light
Com_Memset( numEdgeDefs, 0, 4 * tess.numVertexes );
numTris = tess.numIndexes / 3;
for ( i = 0 ; i < numTris ; i++ ) {
int i1, i2, i3;
vec3_t d1, d2, normal;
float *v1, *v2, *v3;
float d;
i1 = tess.indexes[ i*3 + 0 ];
i2 = tess.indexes[ i*3 + 1 ];
i3 = tess.indexes[ i*3 + 2 ];
v1 = tess.xyz[ i1 ];
v2 = tess.xyz[ i2 ];
v3 = tess.xyz[ i3 ];
VectorSubtract( v2, v1, d1 );
VectorSubtract( v3, v1, d2 );
CrossProduct( d1, d2, normal );
d = DotProduct( normal, lightDir );
if ( d > 0 ) {
facing[ i ] = 1;
} else {
facing[ i ] = 0;
}
// create the edges
R_AddEdgeDef( i1, i2, facing[ i ] );
R_AddEdgeDef( i2, i3, facing[ i ] );
R_AddEdgeDef( i3, i1, facing[ i ] );
}
// draw the silhouette edges
GL_Bind( tr.whiteImage );
GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ZERO );
qglColor3f( 0.2f, 0.2f, 0.2f );
// don't write to the color buffer
qglGetBooleanv(GL_COLOR_WRITEMASK, rgba);
qglColorMask( GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE );
qglEnable( GL_STENCIL_TEST );
qglStencilFunc( GL_ALWAYS, 1, 255 );
GL_Cull( CT_BACK_SIDED );
qglStencilOp( GL_KEEP, GL_KEEP, GL_INCR );
R_RenderShadowEdges();
GL_Cull( CT_FRONT_SIDED );
qglStencilOp( GL_KEEP, GL_KEEP, GL_DECR );
R_RenderShadowEdges();
// reenable writing to the color buffer
qglColorMask(rgba[0], rgba[1], rgba[2], rgba[3]);
}
static void RB_IterateStagesGeneric( shaderCommands_t *input )
{
int stage;
bool UseGLFog = false;
bool FogColorChange = false;
fog_t *fog = NULL;
if (tess.fogNum && tess.shader->fogPass && (tess.fogNum == tr.world->globalFog || tess.fogNum == tr.world->numfogs)
&& r_drawfog->value == 2)
{ // only gl fog global fog and the "special fog"
fog = tr.world->fogs + tess.fogNum;
if (tr.rangedFog)
{ //ranged fog, used for sniper scope
float fStart = fog->parms.depthForOpaque;
if (tr.rangedFog < 0.0f)
{ //special designer override
fStart = -tr.rangedFog;
}
else
{
//the greater tr.rangedFog is, the more fog we will get between the view point and cull distance
if ((tr.distanceCull-fStart) < tr.rangedFog)
{ //assure a minimum range between fog beginning and cutoff distance
fStart = tr.distanceCull-tr.rangedFog;
if (fStart < 16.0f)
{
fStart = 16.0f;
}
}
}
qglFogi(GL_FOG_MODE, GL_LINEAR);
qglFogf(GL_FOG_START, fStart);
qglFogf(GL_FOG_END, tr.distanceCull);
}
else
{
qglFogi(GL_FOG_MODE, GL_EXP2);
qglFogf(GL_FOG_DENSITY, logtestExp2 / fog->parms.depthForOpaque);
}
if ( g_bRenderGlowingObjects )
{
const float fogColor[3] = { 0.0f, 0.0f, 0.0f };
qglFogfv(GL_FOG_COLOR, fogColor );
}
else
{
qglFogfv(GL_FOG_COLOR, fog->parms.color);
}
qglEnable(GL_FOG);
UseGLFog = true;
}
for ( stage = 0; stage < input->shader->numUnfoggedPasses; stage++ )
{
shaderStage_t *pStage = &tess.xstages[stage];
int forceRGBGen = 0;
int stateBits = 0;
if ( !pStage->active )
{
break;
}
// Reject this stage if it's not a glow stage but we are doing a glow pass.
if ( g_bRenderGlowingObjects && !pStage->glow )
{
continue;
}
if ( stage && r_lightmap->integer && !( pStage->bundle[0].isLightmap || pStage->bundle[1].isLightmap || pStage->bundle[0].vertexLightmap ) )
{
break;
}
stateBits = pStage->stateBits;
if ( backEnd.currentEntity )
{
assert(backEnd.currentEntity->e.renderfx >= 0);
if ( backEnd.currentEntity->e.renderfx & RF_DISINTEGRATE1 )
{
// we want to be able to rip a hole in the thing being disintegrated, and by doing the depth-testing it avoids some kinds of artefacts, but will probably introduce others?
stateBits = GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA | GLS_DEPTHMASK_TRUE | GLS_ATEST_GE_C0;
}
if ( backEnd.currentEntity->e.renderfx & RF_RGB_TINT )
{//want to use RGBGen from ent
forceRGBGen = CGEN_ENTITY;
}
}
if (pStage->ss && pStage->ss->surfaceSpriteType)
{
// We check for surfacesprites AFTER drawing everything else
continue;
}
if (UseGLFog)
{
if (pStage->mGLFogColorOverride)
{
qglFogfv(GL_FOG_COLOR, GLFogOverrideColors[pStage->mGLFogColorOverride]);
FogColorChange = true;
}
else if (FogColorChange && fog)
{
FogColorChange = false;
qglFogfv(GL_FOG_COLOR, fog->parms.color);
}
}
if (!input->fading)
{ //this means ignore this, while we do a fade-out
ComputeColors( pStage, forceRGBGen );
}
ComputeTexCoords( pStage );
if ( !setArraysOnce )
{
qglEnableClientState( GL_COLOR_ARRAY );
qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, input->svars.colors );
}
//
// do multitexture
//
if ( pStage->bundle[1].image != 0 )
{
DrawMultitextured( input, stage );
}
else
{
static bool lStencilled = false;
if ( !setArraysOnce )
{
qglTexCoordPointer( 2, GL_FLOAT, 0, input->svars.texcoords[0] );
}
//
// set state
//
if ( (tess.shader == tr.distortionShader) ||
(backEnd.currentEntity && (backEnd.currentEntity->e.renderfx & RF_DISTORTION)) )
{ //special distortion effect -rww
//tr.screenImage should have been set for this specific entity before we got in here.
GL_Bind( tr.screenImage );
GL_Cull(CT_TWO_SIDED);
}
else if ( pStage->bundle[0].vertexLightmap && ( r_vertexLight->integer && !r_uiFullScreen->integer ) && r_lightmap->integer )
{
GL_Bind( tr.whiteImage );
}
else
R_BindAnimatedImage( &pStage->bundle[0] );
if (tess.shader == tr.distortionShader &&
glConfig.stencilBits >= 4)
{ //draw it to the stencil buffer!
tr_stencilled = true;
lStencilled = true;
qglEnable(GL_STENCIL_TEST);
qglStencilFunc(GL_ALWAYS, 1, 0xFFFFFFFF);
qglStencilOp(GL_KEEP, GL_KEEP, GL_INCR);
qglColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
//don't depthmask, don't blend.. don't do anything
GL_State(0);
}
else if (backEnd.currentEntity && (backEnd.currentEntity->e.renderfx & RF_FORCE_ENT_ALPHA))
{
ForceAlpha((unsigned char *) tess.svars.colors, backEnd.currentEntity->e.shaderRGBA[3]);
if (backEnd.currentEntity->e.renderfx & RF_ALPHA_DEPTH)
{ //depth write, so faces through the model will be stomped over by nearer ones. this works because
//we draw RF_FORCE_ENT_ALPHA stuff after everything else, including standard alpha surfs.
GL_State(GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA | GLS_DEPTHMASK_TRUE);
}
else
{
GL_State(GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA);
}
}
else
{
GL_State( stateBits );
}
//
// draw
//
R_DrawElements( input->numIndexes, input->indexes );
if (lStencilled)
{ //re-enable the color buffer, disable stencil test
lStencilled = false;
qglDisable(GL_STENCIL_TEST);
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
}
}
if (FogColorChange)
{
qglFogfv(GL_FOG_COLOR, fog->parms.color);
}
}
