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shader_ir/decode: Implement half float saturation

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This commit is contained in:
ReinUsesLisp 2019-04-09 18:41:41 -03:00
parent 9c4449696a
commit 6d47914b88
5 changed files with 31 additions and 8 deletions
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9
src/video_core/shader/shader_ir.cpp
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@ -218,6 +218,15 @@ Node ShaderIR::GetOperandAbsNegHalf(Node value, bool absolute, bool negate) {
return value;
}
Node ShaderIR::GetSaturatedHalfFloat(Node value, bool saturate) {
if (!saturate) {
return value;
}
const Node positive_zero = Immediate(std::copysignf(0, 1));
const Node positive_one = Immediate(1.0f);
return Operation(OperationCode::HClamp, HALF_NO_PRECISE, value, positive_zero, positive_one);
}
Node ShaderIR::GetPredicateComparisonFloat(PredCondition condition, Node op_a, Node op_b) {
const std::unordered_map<PredCondition, OperationCode> PredicateComparisonTable = {
{PredCondition::LessThan, OperationCode::LogicalFLessThan},