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vk_shader_decompiler: Implement Assign and LogicalAssign
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@ -693,7 +693,49 @@ private:
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}
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Id Assign(Operation operation) {
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UNIMPLEMENTED();
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const Node dest = operation[0];
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const Node src = operation[1];
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Id target{};
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if (const auto gpr = std::get_if<GprNode>(dest)) {
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if (gpr->GetIndex() == Register::ZeroIndex) {
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// Writing to Register::ZeroIndex is a no op
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return {};
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}
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target = registers.at(gpr->GetIndex());
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} else if (const auto abuf = std::get_if<AbufNode>(dest)) {
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target = [&]() -> Id {
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switch (const auto attribute = abuf->GetIndex(); attribute) {
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case Attribute::Index::Position:
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return AccessElement(t_out_float, per_vertex, position_index,
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abuf->GetElement());
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case Attribute::Index::PointSize:
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return AccessElement(t_out_float, per_vertex, point_size_index);
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case Attribute::Index::ClipDistances0123:
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return AccessElement(t_out_float, per_vertex, clip_distances_index,
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abuf->GetElement());
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case Attribute::Index::ClipDistances4567:
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return AccessElement(t_out_float, per_vertex, clip_distances_index,
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abuf->GetElement() + 4);
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default:
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if (IsGenericAttribute(attribute)) {
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return AccessElement(t_out_float, output_attributes.at(attribute),
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abuf->GetElement());
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}
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UNIMPLEMENTED_MSG("Unhandled output attribute: {}",
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static_cast<u32>(attribute));
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return {};
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}
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}();
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} else if (const auto lmem = std::get_if<LmemNode>(dest)) {
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Id address = BitcastTo<Type::Uint>(Visit(lmem->GetAddress()));
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address = Emit(OpUDiv(t_uint, address, Constant(t_uint, 4)));
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target = Emit(OpAccessChain(t_prv_float, local_memory, {address}));
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}
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Emit(OpStore(target, Visit(src)));
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return {};
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}
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@ -723,7 +765,27 @@ private:
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}
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Id LogicalAssign(Operation operation) {
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UNIMPLEMENTED();
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const Node dest = operation[0];
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const Node src = operation[1];
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Id target{};
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if (const auto pred = std::get_if<PredicateNode>(dest)) {
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ASSERT_MSG(!pred->IsNegated(), "Negating logical assignment");
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const auto index = pred->GetIndex();
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switch (index) {
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case Tegra::Shader::Pred::NeverExecute:
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case Tegra::Shader::Pred::UnusedIndex:
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// Writing to these predicates is a no-op
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return {};
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}
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target = predicates.at(index);
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} else if (const auto flag = std::get_if<InternalFlagNode>(dest)) {
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target = internal_flags.at(static_cast<u32>(flag->GetFlag()));
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}
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Emit(OpStore(target, Visit(src)));
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return {};
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}
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