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Shader compiler: Simplify generated code for reading and faster compilation

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This commit is contained in:
wheremyfoodat 2024-07-26 01:08:00 +03:00
parent d9f4f3736f
commit 2fc09223aa
1 changed files with 10 additions and 2 deletions
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12
src/core/PICA/shader_decompiler.cpp
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@ -163,6 +163,12 @@ std::string ShaderDecompiler::getDest(u32 dest) const {
}
std::string ShaderDecompiler::getSwizzlePattern(u32 swizzle) const {
// If the swizzle field is this value then the swizzle pattern is .xyzw so we don't need a shuffle
static constexpr uint noSwizzle = 0x1B;
if (swizzle == noSwizzle) {
return "";
}
static constexpr std::array<char, 4> names = {'x', 'y', 'z', 'w'};
std::string ret(". ");
@ -211,8 +217,10 @@ void ShaderDecompiler::setDest(u32 operandDescriptor, const std::string& dest, c
decompiledShader += dest + destSwizzle + " = ";
if (writtenLaneCount == 1) {
decompiledShader += "float(" + value + ");\n";
} else {
decompiledShader += "vec" + std::to_string(writtenLaneCount) + "(" + value + ");\n";
} else if (writtenLaneCount <= 3) { // We don't need to cast for vec4, as we guarantee the rhs will be a vec4
decompiledShader += fmt::format("vec{}({});\n", writtenLaneCount, value);
} else if (writtenLaneCount == 4) {
decompiledShader += fmt::format("{};\n", value);
}
}