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Perform alpha test with integers instead of floats

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wheremyfoodat 2024-07-16 00:58:52 +03:00
parent db80131213
commit c02b382262
1 changed files with 11 additions and 11 deletions
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22
src/core/PICA/shader_gen_glsl.cpp
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@ -398,17 +398,17 @@ void FragmentGenerator::applyAlphaTest(std::string& shader, const PICARegs& regs
return;
}
shader += "float alphaReferenceFloat = float(alphaReference) / 255.0;\n";
shader += "if (!(";
shader += "int testingAlpha = int(combinerOutput.a * 255.0);\n";
shader += "if (";
switch (function) {
case CompareFunction::Never: shader += "false"; break;
case CompareFunction::Always: shader += "true"; break;
case CompareFunction::Equal: shader += "combinerOutput.a == alphaReferenceFloat"; break;
case CompareFunction::NotEqual: shader += "combinerOutput.a != alphaReferenceFloat"; break;
case CompareFunction::Less: shader += "combinerOutput.a < alphaReferenceFloat"; break;
case CompareFunction::LessOrEqual: shader += "combinerOutput.a <= alphaReferenceFloat"; break;
case CompareFunction::Greater: shader += "combinerOutput.a > alphaReferenceFloat"; break;
case CompareFunction::GreaterOrEqual: shader += "combinerOutput.a >= alphaReferenceFloat"; break;
case CompareFunction::Never: shader += "true"; break;
case CompareFunction::Always: shader += "false"; break;
case CompareFunction::Equal: shader += "testingAlpha != alphaReference"; break;
case CompareFunction::NotEqual: shader += "testingAlpha == alphaReference"; break;
case CompareFunction::Less: shader += "testingAlpha >= alphaReference"; break;
case CompareFunction::LessOrEqual: shader += "testingAlpha > alphaReference"; break;
case CompareFunction::Greater: shader += "testingAlpha <= alphaReference"; break;
case CompareFunction::GreaterOrEqual: shader += "testingAlpha < alphaReference"; break;
default:
Helpers::warn("Unimplemented alpha test function");
@ -416,5 +416,5 @@ void FragmentGenerator::applyAlphaTest(std::string& shader, const PICARegs& regs
break;
}
shader += ")) { discard; }\n";
shader += ") { discard; }\n";
}