static void ComputeShaderColors( shaderStage_t *pStage, vec4_t baseColor, vec4_t vertColor )
{
//
// rgbGen
//
switch ( pStage->rgbGen )
{
case CGEN_IDENTITY:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 1.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_IDENTITY_LIGHTING:
baseColor[0] =
baseColor[1] =
baseColor[2] = tr.identityLight;
baseColor[3] = 1.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_EXACT_VERTEX:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 1.0f;
break;
case CGEN_EXACT_VERTEX_LIT:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 1.0f;
break;
case CGEN_CONST:
baseColor[0] = pStage->constantColor[0] / 255.0f;
baseColor[1] = pStage->constantColor[1] / 255.0f;
baseColor[2] = pStage->constantColor[2] / 255.0f;
baseColor[3] = pStage->constantColor[3] / 255.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_VERTEX:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] = tr.identityLight;
vertColor[3] = 1.0f;
break;
case CGEN_VERTEX_LIT:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = tr.identityLight;
break;
case CGEN_ONE_MINUS_VERTEX:
baseColor[0] =
baseColor[1] =
baseColor[2] = tr.identityLight;
baseColor[3] = 1.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] = -tr.identityLight;
vertColor[3] = 0.0f;
break;
case CGEN_FOG:
{
fog_t *fog;
fog = tr.world->fogs + tess.fogNum;
baseColor[0] = ((unsigned char *)(&fog->colorInt))[0] / 255.0f;
baseColor[1] = ((unsigned char *)(&fog->colorInt))[1] / 255.0f;
baseColor[2] = ((unsigned char *)(&fog->colorInt))[2] / 255.0f;
baseColor[3] = ((unsigned char *)(&fog->colorInt))[3] / 255.0f;
}
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_WAVEFORM:
baseColor[0] =
baseColor[1] =
baseColor[2] = RB_CalcWaveColorSingle( &pStage->rgbWave );
baseColor[3] = 1.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_ENTITY:
if (backEnd.currentEntity)
{
baseColor[0] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[0] / 255.0f;
baseColor[1] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[1] / 255.0f;
baseColor[2] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[2] / 255.0f;
baseColor[3] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_ONE_MINUS_ENTITY:
if (backEnd.currentEntity)
{
baseColor[0] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[0] / 255.0f;
baseColor[1] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[1] / 255.0f;
baseColor[2] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[2] / 255.0f;
baseColor[3] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
case CGEN_LIGHTING_DIFFUSE:
case CGEN_BAD:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 1.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
break;
}
//
// alphaGen
//
switch ( pStage->alphaGen )
{
case AGEN_SKIP:
break;
case AGEN_IDENTITY:
baseColor[3] = 1.0f;
vertColor[3] = 0.0f;
break;
case AGEN_CONST:
baseColor[3] = pStage->constantColor[3] / 255.0f;
vertColor[3] = 0.0f;
break;
case AGEN_WAVEFORM:
baseColor[3] = RB_CalcWaveAlphaSingle( &pStage->alphaWave );
vertColor[3] = 0.0f;
break;
case AGEN_ENTITY:
if (backEnd.currentEntity)
{
baseColor[3] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
vertColor[3] = 0.0f;
break;
case AGEN_ONE_MINUS_ENTITY:
if (backEnd.currentEntity)
{
baseColor[3] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
vertColor[3] = 0.0f;
break;
case AGEN_VERTEX:
baseColor[3] = 0.0f;
vertColor[3] = 1.0f;
break;
case AGEN_ONE_MINUS_VERTEX:
baseColor[3] = 1.0f;
vertColor[3] = -1.0f;
break;
case AGEN_LIGHTING_SPECULAR:
case AGEN_PORTAL:
case AGEN_FRESNEL:
// Done entirely in vertex program
baseColor[3] = 1.0f;
vertColor[3] = 0.0f;
break;
}
// FIXME: find some way to implement this.
#if 0
// if in greyscale rendering mode turn all color values into greyscale.
if(r_greyscale->integer)
{
int scale;
for(i = 0; i < tess.numVertexes; i++)
{
scale = (tess.svars.colors[i][0] + tess.svars.colors[i][1] + tess.svars.colors[i][2]) / 3;
tess.svars.colors[i][0] = tess.svars.colors[i][1] = tess.svars.colors[i][2] = scale;
}
}
#endif
}
static void ComputeShaderColors( shaderStage_t *pStage, vec4_t baseColor, vec4_t vertColor, int blend )
{
qboolean isBlend = ((blend & GLS_SRCBLEND_BITS) == GLS_SRCBLEND_DST_COLOR)
|| ((blend & GLS_SRCBLEND_BITS) == GLS_SRCBLEND_ONE_MINUS_DST_COLOR)
|| ((blend & GLS_DSTBLEND_BITS) == GLS_DSTBLEND_SRC_COLOR)
|| ((blend & GLS_DSTBLEND_BITS) == GLS_DSTBLEND_ONE_MINUS_SRC_COLOR);
#if defined(USE_OVERBRIGHT)
float exactLight = 1.0f;
#else
qboolean isWorldDraw = !(backEnd.refdef.rdflags & RDF_NOWORLDMODEL);
float exactLight = (isBlend || !isWorldDraw) ? 1.0f : (float)(1 << r_mapOverBrightBits->integer);
#endif
baseColor[0] =
baseColor[1] =
baseColor[2] = exactLight;
baseColor[3] = 1.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = 0.0f;
//
// rgbGen
//
switch ( pStage->rgbGen )
{
case CGEN_IDENTITY_LIGHTING:
baseColor[0] =
baseColor[1] =
baseColor[2] = tr.identityLight;
break;
case CGEN_EXACT_VERTEX:
case CGEN_EXACT_VERTEX_LIT:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] = exactLight;
vertColor[3] = 1.0f;
break;
case CGEN_CONST:
baseColor[0] = pStage->constantColor[0] / 255.0f;
baseColor[1] = pStage->constantColor[1] / 255.0f;
baseColor[2] = pStage->constantColor[2] / 255.0f;
baseColor[3] = pStage->constantColor[3] / 255.0f;
break;
case CGEN_VERTEX:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] = tr.identityLight;
vertColor[3] = 1.0f;
break;
case CGEN_VERTEX_LIT:
baseColor[0] =
baseColor[1] =
baseColor[2] =
baseColor[3] = 0.0f;
vertColor[0] =
vertColor[1] =
vertColor[2] =
vertColor[3] = tr.identityLight;
break;
case CGEN_ONE_MINUS_VERTEX:
baseColor[0] =
baseColor[1] =
baseColor[2] = tr.identityLight;
vertColor[0] =
vertColor[1] =
vertColor[2] = -tr.identityLight;
break;
case CGEN_FOG:
{
fog_t *fog;
fog = tr.world->fogs + tess.fogNum;
baseColor[0] = ((unsigned char *)(&fog->colorInt))[0] / 255.0f;
baseColor[1] = ((unsigned char *)(&fog->colorInt))[1] / 255.0f;
baseColor[2] = ((unsigned char *)(&fog->colorInt))[2] / 255.0f;
baseColor[3] = ((unsigned char *)(&fog->colorInt))[3] / 255.0f;
}
break;
case CGEN_WAVEFORM:
baseColor[0] =
baseColor[1] =
baseColor[2] = RB_CalcWaveColorSingle( &pStage->rgbWave );
break;
case CGEN_ENTITY:
if (backEnd.currentEntity)
{
baseColor[0] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[0] / 255.0f;
baseColor[1] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[1] / 255.0f;
baseColor[2] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[2] / 255.0f;
baseColor[3] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
break;
case CGEN_ONE_MINUS_ENTITY:
if (backEnd.currentEntity)
{
baseColor[0] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[0] / 255.0f;
baseColor[1] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[1] / 255.0f;
baseColor[2] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[2] / 255.0f;
baseColor[3] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
break;
case CGEN_IDENTITY:
case CGEN_LIGHTING_DIFFUSE:
case CGEN_BAD:
break;
}
//
// alphaGen
//
switch ( pStage->alphaGen )
{
case AGEN_SKIP:
break;
case AGEN_CONST:
baseColor[3] = pStage->constantColor[3] / 255.0f;
vertColor[3] = 0.0f;
break;
case AGEN_WAVEFORM:
baseColor[3] = RB_CalcWaveAlphaSingle( &pStage->alphaWave );
vertColor[3] = 0.0f;
break;
case AGEN_ENTITY:
if (backEnd.currentEntity)
{
baseColor[3] = ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
vertColor[3] = 0.0f;
break;
case AGEN_ONE_MINUS_ENTITY:
if (backEnd.currentEntity)
{
baseColor[3] = 1.0f - ((unsigned char *)backEnd.currentEntity->e.shaderRGBA)[3] / 255.0f;
}
vertColor[3] = 0.0f;
break;
case AGEN_VERTEX:
baseColor[3] = 0.0f;
vertColor[3] = 1.0f;
break;
case AGEN_ONE_MINUS_VERTEX:
baseColor[3] = 1.0f;
vertColor[3] = -1.0f;
break;
case AGEN_IDENTITY:
case AGEN_LIGHTING_SPECULAR:
case AGEN_PORTAL:
// Done entirely in vertex program
baseColor[3] = 1.0f;
vertColor[3] = 0.0f;
break;
}
// multiply color by overbrightbits if this isn't a blend
if (tr.overbrightBits && !isBlend)
{
float scale = 1 << tr.overbrightBits;
baseColor[0] *= scale;
baseColor[1] *= scale;
baseColor[2] *= scale;
vertColor[0] *= scale;
vertColor[1] *= scale;
vertColor[2] *= scale;
}
// FIXME: find some way to implement this.
#if 0
// if in greyscale rendering mode turn all color values into greyscale.
if(r_greyscale->integer)
{
int scale;
for(i = 0; i < tess.numVertexes; i++)
{
scale = (tess.svars.colors[i][0] + tess.svars.colors[i][1] + tess.svars.colors[i][2]) / 3;
tess.svars.colors[i][0] = tess.svars.colors[i][1] = tess.svars.colors[i][2] = scale;
}
}
#endif
}
