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[D3D12] DXBC clip space scale/offset

This commit is contained in:
Triang3l 2018-09-08 21:48:00 +03:00
parent 3a86d78c18
commit a6936ab4ce
1 changed files with 46 additions and 1 deletions
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47
src/xenia/gpu/dxbc_shader_translator.cc
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@ -491,7 +491,52 @@ void DxbcShaderTranslator::StartTranslation() {
}
void DxbcShaderTranslator::CompleteVertexShader() {
// TODO(Triang3l): vtx_fmt, disabled viewport, half pixel offset.
// TODO(Triang3l): vtx_fmt.
// Apply scale for drawing without a viewport.
rdef_constants_used_ |= 1ull << uint32_t(RdefConstantIndex::kSysNDCScale);
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(system_temp_position_);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_position_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
kSysConst_NDCScale_Comp | ((kSysConst_NDCScale_Comp + 1) << 2) |
((kSysConst_NDCScale_Comp + 2) << 4), 3));
shader_code_.push_back(uint32_t(RdefConstantBufferIndex::kSystemConstants));
shader_code_.push_back(uint32_t(CbufferRegister::kSystemConstants));
shader_code_.push_back(kSysConst_NDCScale_Vec);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Apply offset (multiplied by W) for drawing without a viewport and for half
// pixel offset.
rdef_constants_used_ |= 1ull << uint32_t(RdefConstantIndex::kSysNDCOffset);
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(11));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(system_temp_position_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
kSysConst_NDCOffset_Comp | ((kSysConst_NDCOffset_Comp + 1) << 2) |
((kSysConst_NDCOffset_Comp + 2) << 4), 3));
shader_code_.push_back(uint32_t(RdefConstantBufferIndex::kSystemConstants));
shader_code_.push_back(uint32_t(CbufferRegister::kSystemConstants));
shader_code_.push_back(kSysConst_NDCOffset_Vec);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(system_temp_position_);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_position_);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Write the position to the output.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));