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[D3D12] DXBC: Move interpolants to GPRs in pixel shaders

This commit is contained in:
Triang3l 2018-09-06 14:16:17 +03:00
parent 4cc9e84f35
commit a0aa55b1e8
1 changed files with 28 additions and 0 deletions
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28
src/xenia/gpu/dxbc_shader_translator.cc
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@ -380,6 +380,34 @@ void DxbcShaderTranslator::StartVertexShader() {
}
void DxbcShaderTranslator::StartPixelShader() {
// Copy interpolants to GPRs.
uint32_t interpolator_count = std::min(kInterpolatorCount, register_count());
for (uint32_t i = 0; i < interpolator_count; ++i) {
++stat_.instruction_count;
if (uses_register_dynamic_addressing()) {
++stat_.array_instruction_count;
shader_object_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(6));
shader_object_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_INDEXABLE_TEMP, 0b1111, 2));
shader_object_.push_back(0);
} else {
++stat_.mov_instruction_count;
shader_object_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_object_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
}
shader_object_.push_back(i);
shader_object_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_INPUT, kSwizzleXYZW, 1));
shader_object_.push_back(kPSInInterpolatorRegister + i);
}
// TODO(Triang3l): ps_param_gen.
// Initialize color indexable temporary registers so they have a defined value
// in case the shader doesn't write to all used outputs on all execution
// paths.