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[D3D12] DXBC float constant loading

This commit is contained in:
Triang3l 2018-09-03 07:57:22 +03:00
parent 45c83e84c8
commit cb9c2984dc
1 changed files with 67 additions and 4 deletions
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71
src/xenia/gpu/dxbc_shader_translator.cc
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@ -513,6 +513,9 @@ std::vector<uint8_t> DxbcShaderTranslator::CompleteTranslation() {
void DxbcShaderTranslator::LoadDxbcSourceOperand(
const InstructionOperand& operand, DxbcSourceOperand& dxbc_operand) {
// Initialize the values to their defaults.
dxbc_operand.type = DxbcSourceOperand::Type::kZerosOnes;
dxbc_operand.index = 0;
dxbc_operand.swizzle = kSwizzleXYZW;
dxbc_operand.is_dynamic_indexed = false;
dxbc_operand.is_negated = operand.is_negated;
dxbc_operand.is_absolute_value = operand.is_absolute_value;
@ -523,8 +526,6 @@ void DxbcShaderTranslator::LoadDxbcSourceOperand(
// No components requested, probably totally invalid - give something more
// or less safe (zeros) and exit.
assert_always();
dxbc_operand.type = DxbcSourceOperand::Type::kZerosOnes;
dxbc_operand.index = 0;
return;
}
@ -557,7 +558,6 @@ void DxbcShaderTranslator::LoadDxbcSourceOperand(
// If all components are constant, just write a literal.
if (constant_components == 0xF) {
dxbc_operand.type = DxbcSourceOperand::Type::kZerosOnes;
dxbc_operand.index = constant_component_values;
return;
}
@ -624,9 +624,72 @@ void DxbcShaderTranslator::LoadDxbcSourceOperand(
dxbc_operand.index = uint32_t(operand.storage_index);
}
break;
case InstructionStorageSource::kConstantFloat:
dxbc_operand.type = DxbcSourceOperand::Type::kConstantFloat;
if (operand.storage_addressing_mode ==
InstructionStorageAddressingMode::kStatic) {
// Constant buffers with a constant index can be used directly.
dxbc_operand.index = uint32_t(operand.storage_index);
} else {
dxbc_operand.is_dynamic_indexed = true;
if (dxbc_operand.intermediate_register ==
DxbcSourceOperand::kIntermediateRegisterNone) {
dxbc_operand.intermediate_register = PushSystemTemp();
}
uint32_t constant_address_register = dynamic_address_register;
uint32_t constant_address_component = dynamic_address_component;
if (operand.storage_index != 0) {
// Has an offset - add it.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(dxbc_operand.intermediate_register);
shader_code_.push_back(EncodeVectorSelectOperand(
D3D10_SB_OPERAND_TYPE_TEMP, constant_address_component, 1));
shader_code_.push_back(constant_address_register);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(uint32_t(operand.storage_index));
++stat_.instruction_count;
++stat_.int_instruction_count;
constant_address_register = dxbc_operand.intermediate_register;
constant_address_component = 0;
}
// Load the high part (page, 3 bits) and the low part (vector, 5 bits)
// of the index.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_UBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(15));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0011, 1));
shader_code_.push_back(dxbc_operand.intermediate_register);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(3);
shader_code_.push_back(5);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(5);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP,
constant_address_component | (constant_address_component << 2) |
(constant_address_component << 4) |
(constant_address_component << 6),
1));
shader_code_.push_back(constant_address_register);
++stat_.instruction_count;
++stat_.uint_instruction_count;
}
break;
// TODO(Triang3l): Load other types.
default:
dxbc_operand.type = DxbcSourceOperand::Type::kZerosOnes;
dxbc_operand.index = constant_component_values;
return;
}