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Scalar logc, fix log

This commit is contained in:
Dr. Chat 2016-03-01 12:52:34 -06:00
parent 48cf270724
commit 740c70f270
1 changed files with 22 additions and 1 deletions
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23
src/xenia/gpu/spirv_shader_translator.cc
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@ -729,6 +729,7 @@ void SpirvShaderTranslator::ProcessVectorAluInstruction(
const ParsedAluInstruction& instr) {
auto& b = *builder_;
// TODO: If we have identical operands, reuse previous one.
Id sources[3] = {0};
Id dest = 0;
for (size_t i = 0; i < instr.operand_count; i++) {
@ -899,12 +900,24 @@ void SpirvShaderTranslator::ProcessVectorAluInstruction(
} break;
case AluVectorOpcode::kMax: {
if (sources[0] == sources[1]) {
// mov dst, src
dest = sources[0];
break;
}
dest = CreateGlslStd450InstructionCall(spv::NoPrecision, vec4_float_type_,
spv::GLSLstd450::kFMax,
{sources[0], sources[1]});
} break;
case AluVectorOpcode::kMin: {
if (sources[0] == sources[1]) {
// mov dst, src
dest = sources[0];
break;
}
dest = CreateGlslStd450InstructionCall(spv::NoPrecision, vec4_float_type_,
spv::GLSLstd450::kFMin,
{sources[0], sources[1]});
@ -1065,6 +1078,7 @@ void SpirvShaderTranslator::ProcessScalarAluInstruction(
const ParsedAluInstruction& instr) {
auto& b = *builder_;
// TODO: If we have identical operands, reuse previous one.
Id sources[3] = {0};
Id dest = 0;
for (size_t i = 0, x = 0; i < instr.operand_count; i++) {
@ -1230,10 +1244,17 @@ void SpirvShaderTranslator::ProcessScalarAluInstruction(
} break;
case AluScalarOpcode::kLogc: {
auto t = CreateGlslStd450InstructionCall(
spv::NoPrecision, float_type_, spv::GLSLstd450::kLog2, {sources[0]});
// FIXME: We don't check to see if t == -INF, we just check for INF
auto c = b.createUnaryOp(spv::Op::OpIsInf, bool_type_, t);
dest = b.createTriOp(spv::Op::OpSelect, float_type_, c,
b.makeFloatConstant(-FLT_MAX), t);
} break;
case AluScalarOpcode::kLog: {
auto log = CreateGlslStd450InstructionCall(
dest = CreateGlslStd450InstructionCall(
spv::NoPrecision, float_type_, spv::GLSLstd450::kLog2, {sources[0]});
} break;