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renderer_opengl: Implement half float NaN comparisons
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@ -1173,34 +1173,46 @@ private:
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return GenerateUnary(operation, "any", Type::Bool, Type::Bool2);
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}
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template <bool with_nan>
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std::string GenerateHalfComparison(Operation operation, std::string compare_op) {
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std::string comparison{GenerateBinaryCall(operation, compare_op, Type::Bool2,
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Type::HalfFloat, Type::HalfFloat)};
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if constexpr (!with_nan) {
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return comparison;
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}
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return "halfFloatNanComparison(" + comparison + ", " +
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VisitOperand(operation, 0, Type::HalfFloat) + ", " +
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VisitOperand(operation, 1, Type::HalfFloat) + ')';
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}
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template <bool with_nan>
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std::string Logical2HLessThan(Operation operation) {
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return GenerateBinaryCall(operation, "lessThan", Type::Bool2, Type::HalfFloat,
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Type::HalfFloat);
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return GenerateHalfComparison<with_nan>(operation, "lessThan");
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}
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template <bool with_nan>
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std::string Logical2HEqual(Operation operation) {
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return GenerateBinaryCall(operation, "equal", Type::Bool2, Type::HalfFloat,
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Type::HalfFloat);
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return GenerateHalfComparison<with_nan>(operation, "equal");
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}
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template <bool with_nan>
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std::string Logical2HLessEqual(Operation operation) {
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return GenerateBinaryCall(operation, "lessThanEqual", Type::Bool2, Type::HalfFloat,
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Type::HalfFloat);
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return GenerateHalfComparison<with_nan>(operation, "lessThanEqual");
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}
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template <bool with_nan>
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std::string Logical2HGreaterThan(Operation operation) {
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return GenerateBinaryCall(operation, "greaterThan", Type::Bool2, Type::HalfFloat,
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Type::HalfFloat);
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return GenerateHalfComparison<with_nan>(operation, "greaterThan");
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}
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template <bool with_nan>
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std::string Logical2HNotEqual(Operation operation) {
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return GenerateBinaryCall(operation, "notEqual", Type::Bool2, Type::HalfFloat,
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Type::HalfFloat);
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return GenerateHalfComparison<with_nan>(operation, "notEqual");
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}
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template <bool with_nan>
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std::string Logical2HGreaterEqual(Operation operation) {
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return GenerateBinaryCall(operation, "greaterThanEqual", Type::Bool2, Type::HalfFloat,
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Type::HalfFloat);
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return GenerateHalfComparison<with_nan>(operation, "greaterThanEqual");
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}
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std::string Texture(Operation operation) {
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@ -1525,12 +1537,18 @@ private:
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&GLSLDecompiler::LogicalNotEqual<Type::Uint>,
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&GLSLDecompiler::LogicalGreaterEqual<Type::Uint>,
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&GLSLDecompiler::Logical2HLessThan,
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&GLSLDecompiler::Logical2HEqual,
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&GLSLDecompiler::Logical2HLessEqual,
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&GLSLDecompiler::Logical2HGreaterThan,
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&GLSLDecompiler::Logical2HNotEqual,
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&GLSLDecompiler::Logical2HGreaterEqual,
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&GLSLDecompiler::Logical2HLessThan<false>,
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&GLSLDecompiler::Logical2HEqual<false>,
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&GLSLDecompiler::Logical2HLessEqual<false>,
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&GLSLDecompiler::Logical2HGreaterThan<false>,
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&GLSLDecompiler::Logical2HNotEqual<false>,
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&GLSLDecompiler::Logical2HGreaterEqual<false>,
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&GLSLDecompiler::Logical2HLessThan<true>,
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&GLSLDecompiler::Logical2HEqual<true>,
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&GLSLDecompiler::Logical2HLessEqual<true>,
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&GLSLDecompiler::Logical2HGreaterThan<true>,
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&GLSLDecompiler::Logical2HNotEqual<true>,
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&GLSLDecompiler::Logical2HGreaterEqual<true>,
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&GLSLDecompiler::Texture,
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&GLSLDecompiler::TextureLod,
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@ -1633,6 +1651,12 @@ std::string GetCommonDeclarations() {
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"}\n\n"
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"vec2 toHalf2(float value) {\n"
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" return unpackHalf2x16(ftou(value));\n"
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"}\n\n"
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"bvec2 halfFloatNanComparison(bvec2 comparison, vec2 pair1, vec2 pair2) {\n"
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" bvec2 is_nan1 = isnan(pair1);\n"
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" bvec2 is_nan2 = isnan(pair2);\n"
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" return bvec2(comparison.x || is_nan1.x || is_nan2.x, comparison.y || is_nan1.y || "
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"is_nan2.y);\n"
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"}\n";
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}
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@ -285,13 +285,6 @@ Node ShaderIR::GetPredicateComparisonInteger(PredCondition condition, bool is_si
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Node ShaderIR::GetPredicateComparisonHalf(Tegra::Shader::PredCondition condition,
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const MetaHalfArithmetic& meta, Node op_a, Node op_b) {
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UNIMPLEMENTED_IF_MSG(condition == PredCondition::LessThanWithNan ||
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condition == PredCondition::NotEqualWithNan ||
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condition == PredCondition::LessEqualWithNan ||
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condition == PredCondition::GreaterThanWithNan ||
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condition == PredCondition::GreaterEqualWithNan,
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"Unimplemented NaN comparison for half floats");
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const std::unordered_map<PredCondition, OperationCode> PredicateComparisonTable = {
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{PredCondition::LessThan, OperationCode::Logical2HLessThan},
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{PredCondition::Equal, OperationCode::Logical2HEqual},
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@ -299,11 +292,11 @@ Node ShaderIR::GetPredicateComparisonHalf(Tegra::Shader::PredCondition condition
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{PredCondition::GreaterThan, OperationCode::Logical2HGreaterThan},
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{PredCondition::NotEqual, OperationCode::Logical2HNotEqual},
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{PredCondition::GreaterEqual, OperationCode::Logical2HGreaterEqual},
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{PredCondition::LessThanWithNan, OperationCode::Logical2HLessThan},
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{PredCondition::NotEqualWithNan, OperationCode::Logical2HNotEqual},
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{PredCondition::LessEqualWithNan, OperationCode::Logical2HLessEqual},
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{PredCondition::GreaterThanWithNan, OperationCode::Logical2HGreaterThan},
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{PredCondition::GreaterEqualWithNan, OperationCode::Logical2HGreaterEqual}};
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{PredCondition::LessThanWithNan, OperationCode::Logical2HLessThanWithNan},
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{PredCondition::NotEqualWithNan, OperationCode::Logical2HNotEqualWithNan},
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{PredCondition::LessEqualWithNan, OperationCode::Logical2HLessEqualWithNan},
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{PredCondition::GreaterThanWithNan, OperationCode::Logical2HGreaterThanWithNan},
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{PredCondition::GreaterEqualWithNan, OperationCode::Logical2HGreaterEqualWithNan}};
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const auto comparison{PredicateComparisonTable.find(condition)};
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UNIMPLEMENTED_IF_MSG(comparison == PredicateComparisonTable.end(),
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@ -150,12 +150,18 @@ enum class OperationCode {
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LogicalUNotEqual, /// (uint a, uint b) -> bool
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LogicalUGreaterEqual, /// (uint a, uint b) -> bool
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Logical2HLessThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HNotEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterThan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HNotEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterEqual, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessThanWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HLessEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterThanWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HNotEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Logical2HGreaterEqualWithNan, /// (MetaHalfArithmetic, f16vec2 a, f16vec2) -> bool2
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Texture, /// (MetaTexture, float[N] coords) -> float4
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TextureLod, /// (MetaTexture, float[N] coords) -> float4
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