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shader_decode: SULD.D using std::pair instead of out parameter

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This commit is contained in:
namkazy 2020-04-06 13:46:55 +07:00
parent 9efa51311f
commit 2c98e14d13
2 changed files with 15 additions and 19 deletions
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30
src/video_core/shader/decode/image.cpp
View file

@ -271,37 +271,36 @@ std::size_t GetImageTypeNumCoordinates(Tegra::Shader::ImageType image_type) {
}
} // Anonymous namespace
Node ShaderIR::GetComponentValue(ComponentType component_type, u32 component_size,
Node original_value, bool* is_signed) {
std::pair<Node, bool> ShaderIR::GetComponentValue(ComponentType component_type, u32 component_size,
Node original_value) {
switch (component_type) {
case ComponentType::SNORM: {
*is_signed = true;
// range [-1.0, 1.0]
auto cnv_value = Operation(OperationCode::FMul, original_value,
Immediate(static_cast<float>(1 << component_size) / 2.f - 1.f));
cnv_value = SignedOperation(OperationCode::ICastFloat, is_signed, std::move(cnv_value));
return BitfieldExtract(std::move(cnv_value), 0, component_size);
cnv_value = Operation(OperationCode::ICastFloat, std::move(cnv_value));
return {BitfieldExtract(std::move(cnv_value), 0, component_size), true};
}
case ComponentType::SINT:
case ComponentType::UNORM: {
*is_signed = component_type == ComponentType::SINT;
bool is_signed = component_type == ComponentType::SINT;
// range [0.0, 1.0]
auto cnv_value = Operation(OperationCode::FMul, original_value,
Immediate(static_cast<float>(1 << component_size) - 1.f));
return SignedOperation(OperationCode::ICastFloat, is_signed, std::move(cnv_value));
return {SignedOperation(OperationCode::ICastFloat, is_signed, std::move(cnv_value)),
is_signed};
}
case ComponentType::UINT: // range [0, (1 << component_size) - 1]
*is_signed = false;
return original_value;
return {original_value, false};
case ComponentType::FLOAT:
if (component_size == 16) {
return Operation(OperationCode::HCastFloat, original_value);
return {Operation(OperationCode::HCastFloat, original_value), true};
} else {
return original_value;
return {original_value, true};
}
default:
UNIMPLEMENTED_MSG("Unimplement component type={}", component_type);
return original_value;
return {original_value, true};
}
}
@ -377,14 +376,11 @@ u32 ShaderIR::DecodeImage(NodeBlock& bb, u32 pc) {
}
const auto component_type = GetComponentType(descriptor, element);
const auto component_size = GetComponentSize(descriptor.format, element);
bool is_signed = true;
MetaImage meta{image, {}, element};
Node converted_value = GetComponentValue(
auto [converted_value, is_signed] = GetComponentValue(
component_type, component_size,
Operation(OperationCode::ImageLoad, meta, GetCoordinates(type)),
&is_signed);
Operation(OperationCode::ImageLoad, meta, GetCoordinates(type)));
// shift element to correct position
const auto shifted = shifted_counter;

4
src/video_core/shader/shader_ir.h
View file

@ -313,8 +313,8 @@ private:
Node GetSaturatedHalfFloat(Node value, bool saturate = true);
/// Get image component value by type and size
Node GetComponentValue(Tegra::Texture::ComponentType component_type, u32 component_size,
const Node original_value, bool* is_signed);
std::pair<Node, bool> GetComponentValue(Tegra::Texture::ComponentType component_type,
u32 component_size, Node original_value);
/// Returns a predicate comparing two floats
Node GetPredicateComparisonFloat(Tegra::Shader::PredCondition condition, Node op_a, Node op_b);