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Merge pull request #3469 from namkazt/patch-1

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shader_decode: Fix LD, LDG when track constant buffer
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bunnei 2020-03-04 23:10:01 -05:00 committed by GitHub
commit fa1d625eed
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1 changed files with 14 additions and 6 deletions
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14
src/video_core/shader/track.cpp
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@ -157,13 +157,21 @@ std::tuple<Node, u32, u32> ShaderIR::TrackCbuf(Node tracked, const NodeBlock& co
if (gpr->GetIndex() == Tegra::Shader::Register::ZeroIndex) {
return {};
}
s64 current_cursor = cursor;
while (current_cursor > 0) {
// Reduce the cursor in one to avoid infinite loops when the instruction sets the same
// register that it uses as operand
const auto [source, new_cursor] = TrackRegister(gpr, code, cursor - 1);
const auto [source, new_cursor] = TrackRegister(gpr, code, current_cursor - 1);
current_cursor = new_cursor;
if (!source) {
return {};
continue;
}
return TrackCbuf(source, code, new_cursor);
const auto [base_address, index, offset] = TrackCbuf(source, code, current_cursor);
if (base_address != nullptr) {
return {base_address, index, offset};
}
}
return {};
}
if (const auto operation = std::get_if<OperationNode>(&*tracked)) {
for (std::size_t i = operation->GetOperandsCount(); i > 0; --i) {