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Update shaderFeature.cpp

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marauder2k7 2025-12-08 07:46:33 +00:00
parent 7ea1cb2843
commit f5414c9e64
1 changed files with 35 additions and 102 deletions
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67
Engine/source/shaderGen/shaderFeature.cpp
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@ -38,73 +38,6 @@ void ShaderFeature::addDependency( const ShaderDependency *dependsOn )
mDependencies.push_back(dependsOn); mDependencies.push_back(dependsOn);
} }
Var* ShaderFeature::getVertTexCoord(const String& name)
{
Var* inTex = NULL;
for (U32 i = 0; i < LangElement::elementList.size(); i++)
{
if (!String::compare((char*)LangElement::elementList[i]->name, name.c_str()))
{
inTex = dynamic_cast<Var*>(LangElement::elementList[i]);
if (inTex)
{
// NOTE: This used to do this check...
//
// String::compare( (char*)inTex->structName, "IN" )
//
// ... to ensure that the var was from the input
// vertex structure, but this kept some features
// ( ie. imposter vert ) from decoding their own
// coords for other features to use.
//
// If we run into issues with collisions between
// IN vars and local vars we may need to revise.
break;
}
}
}
return inTex;
}
LangElement* ShaderFeature::expandNormalMap(LangElement* sampleNormalOp, LangElement* normalDecl, LangElement* normalVar, const MaterialFeatureData& fd)
{
MultiLine* meta = new MultiLine;
const bool hasBc3 = fd.features.hasFeature(MFT_IsBC3nm, getProcessIndex());
const bool hasBc5 = fd.features.hasFeature(MFT_IsBC5nm, getProcessIndex());
if (hasBc3 || hasBc5)
{
if (fd.features[MFT_ImposterVert])
{
// The imposter system uses object space normals and
// encodes them with the z axis in the alpha component.
meta->addStatement(new GenOp(" @ = @( normalize( @.xyw * 2.0 - 1.0 ), 0.0 ); // Obj DXTnm\r\n", normalDecl, new TypeOp(GFXSCT_Float4), sampleNormalOp));
}
else if (hasBc3)
{
// BC3 Swizzle trick
meta->addStatement(new GenOp(" @ = @( @.ag * 2.0 - 1.0, 0.0, 0.0 ); // DXTnm\r\n", normalDecl, new TypeOp(GFXSCT_Float4), sampleNormalOp));
meta->addStatement(new GenOp(" @.z = sqrt( 1.0 - dot( @.xy, @.xy ) ); // DXTnm\r\n", normalVar, normalVar, normalVar));
}
else if (hasBc5)
{
// BC5
meta->addStatement(new GenOp(" @ = @( @.gr * 2.0 - 1.0, 0.0, 0.0 ); // bc5nm\r\n", normalDecl, new TypeOp(GFXSCT_Float4), sampleNormalOp));
meta->addStatement(new GenOp(" @.z = sqrt( 1.0 - dot( @.xy, @.xy ) ); // bc5nm\r\n", normalVar, normalVar, normalVar));
}
}
else
{
meta->addStatement(new GenOp(" @ = @;\r\n", normalDecl, sampleNormalOp));
meta->addStatement(new GenOp(" @.xyz = @.xyz * 2.0 - 1.0;\r\n", normalVar, normalVar));
}
return meta;
}
ShaderFeature::Resources ShaderFeature::getResources(const MaterialFeatureData& fd) ShaderFeature::Resources ShaderFeature::getResources(const MaterialFeatureData& fd)
{ {
Resources temp; Resources temp;