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-rw-r--r--src/video_core/renderer_opengl/gl_shader_decompiler.cpp15
-rw-r--r--src/video_core/renderer_vulkan/vk_shader_decompiler.cpp6
-rw-r--r--src/video_core/shader/decode/arithmetic_half_immediate.cpp6
-rw-r--r--src/video_core/shader/shader_ir.cpp9
-rw-r--r--src/video_core/shader/shader_ir.h3
5 files changed, 31 insertions, 8 deletions
diff --git a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
index cbaa4dceb..9c972fd3a 100644
--- a/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_decompiler.cpp
@@ -617,13 +617,11 @@ private:
}
std::string VisitOperand(Operation operation, std::size_t operand_index, Type type) {
- std::string value = VisitOperand(operation, operand_index);
+ const std::string value = VisitOperand(operation, operand_index);
switch (type) {
case Type::HalfFloat: {
const auto half_meta = std::get_if<MetaHalfArithmetic>(&operation.GetMeta());
- if (!half_meta) {
- value = "toHalf2(" + value + ')';
- }
+ ASSERT(half_meta);
switch (half_meta->types.at(operand_index)) {
case Tegra::Shader::HalfType::H0_H1:
@@ -1067,6 +1065,14 @@ private:
return BitwiseCastResult(value, Type::HalfFloat);
}
+ std::string HClamp(Operation operation) {
+ const std::string value = VisitOperand(operation, 0, Type::HalfFloat);
+ const std::string min = VisitOperand(operation, 1, Type::Float);
+ const std::string max = VisitOperand(operation, 2, Type::Float);
+ const std::string clamped = "clamp(" + value + ", vec2(" + min + "), vec2(" + max + "))";
+ return ApplyPrecise(operation, BitwiseCastResult(clamped, Type::HalfFloat));
+ }
+
std::string HMergeF32(Operation operation) {
return "float(toHalf2(" + Visit(operation[0]) + ")[0])";
}
@@ -1501,6 +1507,7 @@ private:
&GLSLDecompiler::Fma<Type::HalfFloat>,
&GLSLDecompiler::Absolute<Type::HalfFloat>,
&GLSLDecompiler::HNegate,
+ &GLSLDecompiler::HClamp,
&GLSLDecompiler::HMergeF32,
&GLSLDecompiler::HMergeH0,
&GLSLDecompiler::HMergeH1,
diff --git a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
index e0a6f5e87..6ecb0bcb0 100644
--- a/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
+++ b/src/video_core/renderer_vulkan/vk_shader_decompiler.cpp
@@ -744,6 +744,11 @@ private:
return {};
}
+ Id HClamp(Operation operation) {
+ UNIMPLEMENTED();
+ return {};
+ }
+
Id HMergeF32(Operation operation) {
UNIMPLEMENTED();
return {};
@@ -1216,6 +1221,7 @@ private:
&SPIRVDecompiler::Ternary<&Module::OpFma, Type::HalfFloat>,
&SPIRVDecompiler::Unary<&Module::OpFAbs, Type::HalfFloat>,
&SPIRVDecompiler::HNegate,
+ &SPIRVDecompiler::HClamp,
&SPIRVDecompiler::HMergeF32,
&SPIRVDecompiler::HMergeH0,
&SPIRVDecompiler::HMergeH1,
diff --git a/src/video_core/shader/decode/arithmetic_half_immediate.cpp b/src/video_core/shader/decode/arithmetic_half_immediate.cpp
index 4a5b0620e..cf4bc0432 100644
--- a/src/video_core/shader/decode/arithmetic_half_immediate.cpp
+++ b/src/video_core/shader/decode/arithmetic_half_immediate.cpp
@@ -23,8 +23,6 @@ u32 ShaderIR::DecodeArithmeticHalfImmediate(NodeBlock& bb, u32 pc) {
} else {
UNIMPLEMENTED_IF(instr.alu_half_imm.precision != Tegra::Shader::HalfPrecision::None);
}
- UNIMPLEMENTED_IF_MSG(instr.alu_half_imm.saturate != 0,
- "Half float immediate saturation not implemented");
Node op_a = GetRegister(instr.gpr8);
op_a = GetOperandAbsNegHalf(op_a, instr.alu_half_imm.abs_a, instr.alu_half_imm.negate_a);
@@ -43,10 +41,10 @@ u32 ShaderIR::DecodeArithmeticHalfImmediate(NodeBlock& bb, u32 pc) {
return Immediate(0);
}
}();
- value = HalfMerge(GetRegister(instr.gpr0), value, instr.alu_half_imm.merge);
+ value = GetSaturatedHalfFloat(value, instr.alu_half_imm.saturate);
+ value = HalfMerge(GetRegister(instr.gpr0), value, instr.alu_half_imm.merge);
SetRegister(bb, instr.gpr0, value);
-
return pc;
}
diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp
index 5c1c591f8..d158b4bfd 100644
--- a/src/video_core/shader/shader_ir.cpp
+++ b/src/video_core/shader/shader_ir.cpp
@@ -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},
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index 0ae51389b..d329da58d 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -114,6 +114,7 @@ enum class OperationCode {
HFma, /// (MetaHalfArithmetic, f16vec2 a, f16vec2 b, f16vec2 c) -> f16vec2
HAbsolute, /// (f16vec2 a) -> f16vec2
HNegate, /// (f16vec2 a, bool first, bool second) -> f16vec2
+ HClamp, /// (f16vec2 src, float min, float max) -> f16vec2
HMergeF32, /// (f16vec2 src) -> float
HMergeH0, /// (f16vec2 dest, f16vec2 src) -> f16vec2
HMergeH1, /// (f16vec2 dest, f16vec2 src) -> f16vec2
@@ -716,6 +717,8 @@ private:
Node HalfMerge(Node dest, Node src, Tegra::Shader::HalfMerge merge);
/// Conditionally absolute/negated half float pair. Absolute is applied first
Node GetOperandAbsNegHalf(Node value, bool absolute, bool negate);
+ /// Conditionally saturates a half float pair
+ Node GetSaturatedHalfFloat(Node value, bool saturate = true);
/// Returns a predicate comparing two floats
Node GetPredicateComparisonFloat(Tegra::Shader::PredCondition condition, Node op_a, Node op_b);