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[D3D12] DXBC: maxas, maxasf

This commit is contained in:
Triang3l 2018-09-05 18:43:06 +03:00
parent b63d38319b
commit 5fb3fe3ab5
1 changed files with 105 additions and 4 deletions
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109
src/xenia/gpu/dxbc_shader_translator.cc
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@ -1633,6 +1633,7 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
case AluVectorOpcode::kMaxA:
// The `a0 = int(clamp(floor(src0.w + 0.5), -256.0, 255.0))` part.
//
// Using specifically floor(src0.w + 0.5) rather than round(src0.w)
// because the R600 ISA reference says so - this makes a difference at
// 0.5 because round rounds to the nearest even.
@ -1641,7 +1642,7 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
// yet which is the correct - the mova_int description, for example, says
// "clamp" explicitly.
//
// pv.x = src0.w + 0.5
// pv.x (temporary) = src0.w + 0.5
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
5 + operand_length_sums[0]));
@ -1705,7 +1706,7 @@ void DxbcShaderTranslator::ProcessVectorAluInstruction(
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
// The `max(src0, src1)` part.
// The `pv = max(src0, src1)` part.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAX) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
3 + operand_length_sums[1]));
@ -1899,8 +1900,108 @@ void DxbcShaderTranslator::ProcessScalarAluInstruction(
++stat_.float_instruction_count;
break;
// TODO(Triang3l): kLogc, kRcpc, kRcpf, kRcp, kRsqc, kRsqf, kRsq, kMaxAs,
// kMasAsf.
// TODO(Triang3l): kLogc, kRcpc, kRcpf, kRcp, kRsqc, kRsqf, kRsq.
case AluScalarOpcode::kMaxAs:
case AluScalarOpcode::kMaxAsf:
// The `a0 = int(clamp(round(src0.x), -256.0, 255.0))` part.
//
// See AluVectorOpcode::kMaxA handling for details regarding rounding and
// clamping.
//
// ps (temporary) = round(src0.x) (towards the nearest integer via
// floor(src0.x + 0.5) for maxas and towards -Infinity for maxasf).
if (instr.scalar_opcode == AluScalarOpcode::kMaxAs) {
// ps = src0.x + 0.5
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5 +
operand_lengths[0]));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
UseDxbcSourceOperand(dxbc_operands[0], kSwizzleXYZW, 0);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x3F000000u);
++stat_.instruction_count;
++stat_.float_instruction_count;
// ps = floor(src0.x + 0.5)
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ROUND_NI) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
++stat_.instruction_count;
++stat_.float_instruction_count;
} else {
// ps = floor(src0.x)
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ROUND_NI) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3 +
operand_lengths[0]));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
UseDxbcSourceOperand(dxbc_operands[0], kSwizzleXYZW, 0);
++stat_.instruction_count;
++stat_.float_instruction_count;
}
// ps = max(round(src0.x), -256.0)
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAX) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0xC3800000u);
++stat_.instruction_count;
++stat_.float_instruction_count;
// ps = clamp(round(src0.x), -256.0, 255.0)
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MIN) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x437F0000u);
++stat_.instruction_count;
++stat_.float_instruction_count;
// a0 = int(clamp(floor(src0.x + 0.5), -256.0, 255.0))
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_FTOI) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1000, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
// The `ps = max(src0.x, src0.y)` part.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAX) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
3 + 2 * operand_lengths[0]));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_ps_pc_p0_a0_);
UseDxbcSourceOperand(dxbc_operands[0], kSwizzleXYZW, 0);
UseDxbcSourceOperand(dxbc_operands[0], kSwizzleXYZW, 1);
++stat_.instruction_count;
++stat_.float_instruction_count;
break;
case AluScalarOpcode::kSubsPrev:
shader_code_.push_back(