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MaxAs/SetpClr

This commit is contained in:
Dr. Chat 2016-02-21 16:39:54 -06:00
parent fa3ca4a5d7
commit d217f7b3c3
2 changed files with 25 additions and 1 deletions
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24
src/xenia/gpu/spirv_shader_translator.cc
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@ -54,6 +54,7 @@ void SpirvShaderTranslator::StartTranslation() {
bool_type_ = b.makeBoolType();
float_type_ = b.makeFloatType(32);
int_type_ = b.makeIntType(32);
Id uint_type = b.makeUintType(32);
vec2_float_type_ = b.makeVectorType(float_type_, 2);
vec3_float_type_ = b.makeVectorType(float_type_, 3);
@ -961,6 +962,24 @@ void SpirvShaderTranslator::ProcessScalarAluInstruction(
dest = b.makeFloatConstant(0.f);
} break;
case AluScalarOpcode::kMaxAs: {
// a0 = clamp(floor(src0 + 0.5), -256, 255)
auto addr = b.createBinOp(spv::Op::OpFAdd, float_type_, sources[0],
b.makeFloatConstant(0.5f));
addr = b.createUnaryOp(spv::Op::OpConvertFToS, int_type_, addr);
addr = CreateGlslStd450InstructionCall(
spv::Decoration::DecorationInvariant, int_type_,
spv::GLSLstd450::kSClamp,
{addr, b.makeIntConstant(-256), b.makeIntConstant(255)});
b.createStore(addr, a0_);
// dest = src0 >= src1 ? src0 : src1
auto cond = b.createBinOp(spv::Op::OpFOrdGreaterThanEqual, bool_type_,
sources[0], sources[1]);
dest = b.createTriOp(spv::Op::OpSelect, float_type_, cond, sources[0],
sources[1]);
} break;
case AluScalarOpcode::kMaxs: {
// dest = max(src0, src1)
dest = CreateGlslStd450InstructionCall(
@ -1050,6 +1069,11 @@ void SpirvShaderTranslator::ProcessScalarAluInstruction(
b.makeFloatConstant(1.f), b.makeFloatConstant(0.f));
} break;
case AluScalarOpcode::kSetpClr: {
b.createStore(b.makeBoolConstant(false), p0_);
dest = b.makeFloatConstant(FLT_MAX);
} break;
case AluScalarOpcode::kSetpEq: {
auto cond = b.createBinOp(spv::Op::OpFOrdEqual, bool_type_, sources[0],
b.makeFloatConstant(0.f));

2
src/xenia/gpu/spirv_shader_translator.h
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@ -104,7 +104,7 @@ class SpirvShaderTranslator : public ShaderTranslator {
spv::Function* translated_main_ = 0;
// Types.
spv::Id float_type_ = 0, bool_type_ = 0;
spv::Id float_type_ = 0, bool_type_ = 0, int_type_ = 0;
spv::Id vec2_float_type_ = 0, vec3_float_type_ = 0, vec4_float_type_ = 0;
spv::Id vec4_uint_type_ = 0;
spv::Id vec4_bool_type_ = 0;