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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.
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75eb953575
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1 changed files with 2 additions and 4 deletions
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@ -1821,15 +1821,13 @@ private:
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Expression HMergeH0(Operation operation) {
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const std::string dest = VisitOperand(operation, 0).AsUint();
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const std::string src = VisitOperand(operation, 1).AsUint();
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return {fmt::format("vec2(unpackHalf2x16({}).x, unpackHalf2x16({}).y)", src, dest),
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Type::HalfFloat};
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return {fmt::format("bitfieldInsert({}, {}, 0, 16)", dest, src), Type::Uint};
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}
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Expression HMergeH1(Operation operation) {
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const std::string dest = VisitOperand(operation, 0).AsUint();
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const std::string src = VisitOperand(operation, 1).AsUint();
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return {fmt::format("vec2(unpackHalf2x16({}).x, unpackHalf2x16({}).y)", dest, src),
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Type::HalfFloat};
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return {fmt::format("bitfieldInsert({}, {}, 16, 16)", dest, src), Type::Uint};
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}
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Expression HPack2(Operation operation) {
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