vk_shader_decompiler: Implement most common texture primitives
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4667ed8e22
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@ -836,24 +836,81 @@ private:
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: Emit(OpCompositeConstruct(t_float_lut.at(coords.size() - 1), coords));
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}
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Id GetTextureElement(Operation operation, Id sample_value) {
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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ASSERT(meta);
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return Emit(OpCompositeExtract(t_float, sample_value, meta->element));
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}
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Id Texture(Operation operation) {
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UNIMPLEMENTED();
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return {};
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const Id texture = Emit(OpImageSampleImplicitLod(t_float4, GetTextureSampler(operation),
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GetTextureCoordinates(operation)));
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return GetTextureElement(operation, texture);
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}
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Id TextureLod(Operation operation) {
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UNIMPLEMENTED();
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return {};
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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const Id texture = Emit(OpImageSampleExplicitLod(
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t_float4, GetTextureSampler(operation), GetTextureCoordinates(operation),
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spv::ImageOperandsMask::Lod, Visit(meta->lod)));
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return GetTextureElement(operation, texture);
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}
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Id TextureGather(Operation operation) {
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UNIMPLEMENTED();
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return {};
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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const auto coords = GetTextureCoordinates(operation);
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Id texture;
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if (meta->sampler.IsShadow()) {
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texture = Emit(OpImageDrefGather(t_float4, GetTextureSampler(operation), coords,
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Visit(meta->component)));
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} else {
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u32 component_value = 0;
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if (meta->component) {
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const auto component = std::get_if<ImmediateNode>(meta->component);
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ASSERT_MSG(component, "Component is not an immediate value");
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component_value = component->GetValue();
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}
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texture = Emit(OpImageGather(t_float4, GetTextureSampler(operation), coords,
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Constant(t_uint, component_value)));
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}
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return GetTextureElement(operation, texture);
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}
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Id TextureQueryDimensions(Operation operation) {
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UNIMPLEMENTED();
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return {};
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const auto meta = std::get_if<MetaTexture>(&operation.GetMeta());
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const auto image_id = GetTextureImage(operation);
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AddCapability(spv::Capability::ImageQuery);
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if (meta->element == 3) {
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return BitcastTo<Type::Float>(Emit(OpImageQueryLevels(t_int, image_id)));
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}
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const Id lod = VisitOperand<Type::Uint>(operation, 0);
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const std::size_t coords_count = [&]() {
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switch (const auto type = meta->sampler.GetType(); type) {
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case Tegra::Shader::TextureType::Texture1D:
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return 1;
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case Tegra::Shader::TextureType::Texture2D:
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case Tegra::Shader::TextureType::TextureCube:
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return 2;
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case Tegra::Shader::TextureType::Texture3D:
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return 3;
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default:
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UNREACHABLE_MSG("Invalid texture type={}", static_cast<u32>(type));
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return 2;
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}
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}();
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if (meta->element >= coords_count) {
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return Constant(t_float, 0.0f);
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}
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const std::array<Id, 3> types = {t_int, t_int2, t_int3};
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const Id sizes = Emit(OpImageQuerySizeLod(types.at(coords_count - 1), image_id, lod));
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const Id size = Emit(OpCompositeExtract(t_int, sizes, meta->element));
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return BitcastTo<Type::Float>(size);
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}
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Id TextureQueryLod(Operation operation) {
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