void CBaseVSShader::SetPixelShaderConstantGammaToLinear( int pixelReg, int constantVar, int constantVar2 )
{
Assert( !IsSnapshotting() );
if ((!s_ppParams) || (constantVar == -1) || (constantVar2 == -1))
return;
IMaterialVar* pPixelVar = s_ppParams[constantVar];
Assert( pPixelVar );
IMaterialVar* pPixelVar2 = s_ppParams[constantVar2];
Assert( pPixelVar2 );
float val[4];
if (pPixelVar->GetType() == MATERIAL_VAR_TYPE_VECTOR)
{
pPixelVar->GetVecValue( val, 3 );
}
else
{
val[0] = val[1] = val[2] = pPixelVar->GetFloatValue();
}
val[3] = pPixelVar2->GetFloatValue();
val[0] = val[0] > 1.0f ? val[0] : GammaToLinear( val[0] );
val[1] = val[1] > 1.0f ? val[1] : GammaToLinear( val[1] );
val[2] = val[2] > 1.0f ? val[2] : GammaToLinear( val[2] );
s_pShaderAPI->SetPixelShaderConstant( pixelReg, val );
}
//-----------------------------------------------------------------------------
// Helpers for dealing with envmap tint
//-----------------------------------------------------------------------------
// set alphaVar to -1 to ignore it.
void CBaseVSShader::SetEnvMapTintPixelShaderDynamicState( int pixelReg, int tintVar, int alphaVar, bool bConvertFromGammaToLinear )
{
float color[4] = { 1.0f, 1.0f, 1.0f, 1.0f };
if( g_pConfig->bShowSpecular && mat_fullbright.GetInt() != 2 )
{
IMaterialVar* pAlphaVar = NULL;
if( alphaVar >= 0 )
{
pAlphaVar = s_ppParams[alphaVar];
}
if( pAlphaVar )
{
color[3] = pAlphaVar->GetFloatValue();
}
IMaterialVar* pTintVar = s_ppParams[tintVar];
#ifdef _DEBUG
pTintVar->GetVecValue( color, 3 );
float envmapTintOverride = mat_envmaptintoverride.GetFloat();
float envmapTintScaleOverride = mat_envmaptintscale.GetFloat();
if( envmapTintOverride != -1.0f )
{
color[0] = color[1] = color[2] = envmapTintOverride;
}
if( envmapTintScaleOverride != -1.0f )
{
color[0] *= envmapTintScaleOverride;
color[1] *= envmapTintScaleOverride;
color[2] *= envmapTintScaleOverride;
}
if( bConvertFromGammaToLinear )
{
color[0] = color[0] > 1.0f ? color[0] : GammaToLinear( color[0] );
color[1] = color[1] > 1.0f ? color[1] : GammaToLinear( color[1] );
color[2] = color[2] > 1.0f ? color[2] : GammaToLinear( color[2] );
}
#else
if( bConvertFromGammaToLinear )
{
pTintVar->GetLinearVecValue( color, 3 );
}
else
{
pTintVar->GetVecValue( color, 3 );
}
#endif
}
else
{
color[0] = color[1] = color[2] = color[3] = 0.0f;
}
s_pShaderAPI->SetPixelShaderConstant( pixelReg, color, 1 );
}
void UTIL_ColorStringToLinearFloatColor( Vector &color, const char *pString )
{
float tmp[4];
UTIL_StringToFloatArray( tmp, 4, pString );
if( tmp[3] <= 0.0f )
{
tmp[3] = 255.0f;
}
tmp[3] *= ( 1.0f / 255.0f );
color.x = GammaToLinear( tmp[0] * ( 1.0f / 255.0f ) ) * tmp[3];
color.y = GammaToLinear( tmp[1] * ( 1.0f / 255.0f ) ) * tmp[3];
color.z = GammaToLinear( tmp[2] * ( 1.0f / 255.0f ) ) * tmp[3];
}
void CBaseVSShader::SetVertexShaderConstantGammaToLinear( int var, float const* pVec, int numConst, bool bForce )
{
int i;
for( i = 0; i < numConst; i++ )
{
float vec[4];
vec[0] = pVec[i*4+0] > 1.0f ? pVec[i*4+0] : GammaToLinear( pVec[i*4+0] );
vec[1] = pVec[i*4+1] > 1.0f ? pVec[i*4+1] : GammaToLinear( pVec[i*4+1] );
vec[2] = pVec[i*4+2] > 1.0f ? pVec[i*4+2] : GammaToLinear( pVec[i*4+2] );
vec[3] = pVec[i*4+3];
s_pShaderAPI->SetVertexShaderConstant( var + i, vec, 1, bForce );
}
}
