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[SPIR-V] Unary math functions

This commit is contained in:
Triang3l 2020-11-01 21:48:14 +03:00
parent d466ebbbe1
commit 0f6aff6f74
1 changed files with 100 additions and 0 deletions
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100
src/xenia/gpu/spirv_shader_translator_alu.cc
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@ -10,6 +10,8 @@
#include "xenia/gpu/spirv_shader_translator.h"
#include <cfloat>
#include <cmath>
#include <cstdint>
#include <memory>
#include "third_party/glslang/SPIRV/GLSL.std.450.h"
@ -1210,6 +1212,104 @@ spv::Id SpirvShaderTranslator::ProcessScalarAluOperation(
return builder_->createBuiltinCall(
type_float_, ext_inst_glsl_std_450_,
GLSLstd450(kOps[size_t(instr.scalar_opcode)]), id_vector_temp_);
case ucode::AluScalarOpcode::kLogc: {
id_vector_temp_.clear();
id_vector_temp_.push_back(GetOperandComponents(
operand_storage[0], instr.scalar_operands[0], 0b0001));
spv::Id result = builder_->createBuiltinCall(
type_float_, ext_inst_glsl_std_450_, GLSLstd450Log2, id_vector_temp_);
return builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(-INFINITY)),
builder_->makeFloatConstant(-FLT_MAX), result);
}
case ucode::AluScalarOpcode::kRcpc: {
spv::Id result = builder_->createBinOp(
spv::OpFDiv, type_float_, const_float_1_,
GetOperandComponents(operand_storage[0], instr.scalar_operands[0],
0b0001));
builder_->addDecoration(result, spv::DecorationNoContraction);
result = builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(-INFINITY)),
builder_->makeFloatConstant(-FLT_MAX), result);
return builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(INFINITY)),
builder_->makeFloatConstant(FLT_MAX), result);
}
case ucode::AluScalarOpcode::kRcpf: {
spv::Id result = builder_->createBinOp(
spv::OpFDiv, type_float_, const_float_1_,
GetOperandComponents(operand_storage[0], instr.scalar_operands[0],
0b0001));
builder_->addDecoration(result, spv::DecorationNoContraction);
result = builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(INFINITY)),
const_float_0_, result);
// Can't create -0.0f with makeFloatConstant due to float comparison
// internally, cast to bit pattern.
result = builder_->createTriOp(
spv::OpSelect, type_uint_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(-INFINITY)),
builder_->makeUintConstant(uint32_t(INT32_MIN)),
builder_->createUnaryOp(spv::OpBitcast, type_uint_, result));
return builder_->createUnaryOp(spv::OpBitcast, type_float_, result);
}
case ucode::AluScalarOpcode::kRcp: {
spv::Id result = builder_->createBinOp(
spv::OpFDiv, type_float_, const_float_1_,
GetOperandComponents(operand_storage[0], instr.scalar_operands[0],
0b0001));
builder_->addDecoration(result, spv::DecorationNoContraction);
return result;
}
case ucode::AluScalarOpcode::kRsqc: {
id_vector_temp_.clear();
id_vector_temp_.push_back(GetOperandComponents(
operand_storage[0], instr.scalar_operands[0], 0b0001));
spv::Id result =
builder_->createBuiltinCall(type_float_, ext_inst_glsl_std_450_,
GLSLstd450InverseSqrt, id_vector_temp_);
result = builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(-INFINITY)),
builder_->makeFloatConstant(-FLT_MAX), result);
return builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(INFINITY)),
builder_->makeFloatConstant(FLT_MAX), result);
}
case ucode::AluScalarOpcode::kRsqf: {
id_vector_temp_.clear();
id_vector_temp_.push_back(GetOperandComponents(
operand_storage[0], instr.scalar_operands[0], 0b0001));
spv::Id result =
builder_->createBuiltinCall(type_float_, ext_inst_glsl_std_450_,
GLSLstd450InverseSqrt, id_vector_temp_);
result = builder_->createTriOp(
spv::OpSelect, type_float_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(INFINITY)),
const_float_0_, result);
// Can't create -0.0f with makeFloatConstant due to float comparison
// internally, cast to bit pattern.
result = builder_->createTriOp(
spv::OpSelect, type_uint_,
builder_->createBinOp(spv::OpFOrdEqual, type_bool_, result,
builder_->makeFloatConstant(-INFINITY)),
builder_->makeUintConstant(uint32_t(INT32_MIN)),
builder_->createUnaryOp(spv::OpBitcast, type_uint_, result));
return builder_->createUnaryOp(spv::OpBitcast, type_float_, result);
}
// TODO(Triang3l): Implement the rest of instructions.
}