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gl_shader_decompiler: Implement merges with bitfieldInsert 

This also fixes Turing issues but it avoids doing more bitcasts. This
should improve the generated code while also avoiding more points where
compilers can flush floats.
This commit is contained in:
ReinUsesLisp 2020-04-12 22:39:57 -03:00
parent 75eb953575
commit 05cf270836
1 changed files with 2 additions and 4 deletions
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6
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
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@ -1821,15 +1821,13 @@ private:
Expression HMergeH0(Operation operation) {
const std::string dest = VisitOperand(operation, 0).AsUint();
const std::string src = VisitOperand(operation, 1).AsUint();
return {fmt::format("vec2(unpackHalf2x16({}).x, unpackHalf2x16({}).y)", src, dest),
Type::HalfFloat};
return {fmt::format("bitfieldInsert({}, {}, 0, 16)", dest, src), Type::Uint};
}
Expression HMergeH1(Operation operation) {
const std::string dest = VisitOperand(operation, 0).AsUint();
const std::string src = VisitOperand(operation, 1).AsUint();
return {fmt::format("vec2(unpackHalf2x16({}).x, unpackHalf2x16({}).y)", dest, src),
Type::HalfFloat};
return {fmt::format("bitfieldInsert({}, {}, 16, 16)", dest, src), Type::Uint};
}
Expression HPack2(Operation operation) {