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[D3D12] DXBC: Convert vertex index to float

This commit is contained in:
Triang3l 2018-09-06 22:45:07 +03:00
parent 2b2d7e71c6
commit e2d60a4708
1 changed files with 19 additions and 7 deletions
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26
src/xenia/gpu/dxbc_shader_translator.cc
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@ -315,20 +315,18 @@ void DxbcShaderTranslator::StartVertexShader_LoadVertexIndex() {
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Add the base vertex index and replicate the swapped value in the
// destination register (what should be in YZW is unknown, but just to make it
// a bit cleaner).
// Add the base vertex index.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXXXX, 1));
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(reg);
rdef_constants_used_ |= 1ull
<< uint32_t(RdefConstantIndex::kSysVertexBaseIndex);
shader_code_.push_back(EncodeVectorReplicatedOperand(
shader_code_.push_back(EncodeVectorSelectOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER, kSysConst_VertexBaseIndex_Comp,
3));
shader_code_.push_back(uint32_t(RdefConstantBufferIndex::kSystemConstants));
@ -337,6 +335,20 @@ void DxbcShaderTranslator::StartVertexShader_LoadVertexIndex() {
++stat_.instruction_count;
++stat_.int_instruction_count;
// Convert to float and replicate the swapped value in the destination
// register (what should be in YZW is unknown, but just to make it a bit
// cleaner).
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ITOF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
if (uses_register_dynamic_addressing()) {
// Store to indexed GPR 0 in x0[0].
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
@ -391,7 +403,7 @@ void DxbcShaderTranslator::StartVertexShader() {
++stat_.instruction_count;
++stat_.mov_instruction_count;
// Byte swap and write the vertex index to GPR 0.
// Write the vertex index to GPR 0.
StartVertexShader_LoadVertexIndex();
}