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[D3D12] DXBC: Zero operand handling in vector mul and mad

This commit is contained in:
Triang3l 2018-09-18 12:37:47 +03:00
parent a27740a41f
commit 41d461d3a5
1 changed files with 166 additions and 3 deletions
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169
src/xenia/gpu/dxbc_shader_translator.cc
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@ -4822,10 +4822,11 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
switch (instr.vector_opcode) {
case AluVectorOpcode::kAdd:
case AluVectorOpcode::kMul:
case AluVectorOpcode::kMax:
// max is commonly used as mov, but probably better not to convert it to
// make sure things like flusing denormals aren't affected.
// TODO(Triang3l): Implement Shader Model 3 behavior of min/max - return the
// non-NaN operand if any is NaN.
case AluVectorOpcode::kMin:
case AluVectorOpcode::kDp4:
case AluVectorOpcode::kDp3:
@ -4843,6 +4844,97 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
++stat_.float_instruction_count;
break;
case AluVectorOpcode::kMul: {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
3 + operand_length_sums[1]));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(system_temp_pv_);
UseDxbcSourceOperand(dxbc_operands[0]);
UseDxbcSourceOperand(dxbc_operands[1]);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Reproduce Shader Model 3 multiplication behavior - 0 * anything = 0,
// flushing denormals.
// With Shader Model 4 behavior, Halo 3 has a significant portion of the
// image missing because rcp(0) is multiplied by 0, which results in NaN
// rather than 0.
uint32_t is_subnormal_temp = PushSystemTemp();
// Check the first operand.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_LT) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
8 + DxbcSourceOperandLength(dxbc_operands[0], false, true)));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(is_subnormal_temp);
UseDxbcSourceOperand(dxbc_operands[0], kSwizzleXYZW, 4, false, true);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 1));
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
++stat_.instruction_count;
++stat_.float_instruction_count;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(12));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(is_subnormal_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 1));
shader_code_.push_back(0);
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, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Check the second operand.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_LT) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
8 + DxbcSourceOperandLength(dxbc_operands[1], false, true)));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(is_subnormal_temp);
UseDxbcSourceOperand(dxbc_operands[1], kSwizzleXYZW, 4, false, true);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 1));
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
++stat_.instruction_count;
++stat_.float_instruction_count;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(12));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(is_subnormal_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 1));
shader_code_.push_back(0);
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, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
// Release is_subnormal_temp.
PopSystemTemp();
} break;
case AluVectorOpcode::kSeq:
case AluVectorOpcode::kSgt:
case AluVectorOpcode::kSge:
@ -4898,7 +4990,7 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
++stat_.float_instruction_count;
break;
case AluVectorOpcode::kMad:
case AluVectorOpcode::kMad: {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
3 + operand_length_sums[2]));
@ -4910,7 +5002,78 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
UseDxbcSourceOperand(dxbc_operands[2]);
++stat_.instruction_count;
++stat_.float_instruction_count;
break;
// Reproduce Shader Model 3 multiplication behavior - 0 * anything = 0.
// If any operand is zero or denormalized, just leave the addition part.
uint32_t is_subnormal_temp = PushSystemTemp();
// Check the first operand.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_LT) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
8 + DxbcSourceOperandLength(dxbc_operands[0], false, true)));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(is_subnormal_temp);
UseDxbcSourceOperand(dxbc_operands[0], kSwizzleXYZW, 4, false, true);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 1));
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
++stat_.instruction_count;
++stat_.float_instruction_count;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
7 + DxbcSourceOperandLength(dxbc_operands[2])));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(is_subnormal_temp);
UseDxbcSourceOperand(dxbc_operands[2]);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Check the second operand.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_LT) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
8 + DxbcSourceOperandLength(dxbc_operands[1], false, true)));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(is_subnormal_temp);
UseDxbcSourceOperand(dxbc_operands[1], kSwizzleXYZW, 4, false, true);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 1));
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
shader_code_.push_back(0x00800000);
++stat_.instruction_count;
++stat_.float_instruction_count;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
7 + DxbcSourceOperandLength(dxbc_operands[2])));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(is_subnormal_temp);
UseDxbcSourceOperand(dxbc_operands[2]);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Release is_subnormal_temp.
PopSystemTemp();
} break;
// Using true eq to compare with zero because it handles denormals and -0.
case AluVectorOpcode::kCndEq: