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Xenia-Canary/src/xenia/gpu/dxbc_shader_translator_fetch.cc

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/**
******************************************************************************
* Xenia : Xbox 360 Emulator Research Project *
******************************************************************************
* Copyright 2018 Ben Vanik. All rights reserved. *
* Released under the BSD license - see LICENSE in the root for more details. *
******************************************************************************
*/
#include "xenia/gpu/dxbc_shader_translator.h"
#include <algorithm>
#include <memory>
#include <sstream>
#include "third_party/dxbc/d3d12TokenizedProgramFormat.hpp"
#include "xenia/base/assert.h"
#include "xenia/base/string.h"
namespace xe {
namespace gpu {
using namespace ucode;
void DxbcShaderTranslator::SwapVertexData(uint32_t vfetch_index,
uint32_t write_mask) {
// Make sure we have fetch constants.
if (cbuffer_index_fetch_constants_ == kCbufferIndexUnallocated) {
cbuffer_index_fetch_constants_ = cbuffer_count_++;
}
// Allocate temporary registers for intermediate values.
uint32_t temp1 = PushSystemTemp();
uint32_t temp2 = PushSystemTemp();
// 8-in-16: Create the value being built in temp1.
// ushr temp1, pv, l(8, 8, 8, 8)
// pv: ABCD, temp1: BCD0
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_USHR) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(temp1);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// 8-in-16: Insert A in Y of temp1.
// bfi temp1, l(8, 8, 8, 8), l(8, 8, 8, 8), pv, temp1
// pv: ABCD, temp1: BAD0
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_BFI) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(temp1);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(temp1);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// 8-in-16: Create the source for C insertion in temp2.
// ushr temp2, pv, l(16, 16, 16, 16)
// pv: ABCD, temp1: BAD0, temp2: CD00
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_USHR) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// 8-in-16: Insert C in W of temp1.
// bfi temp1, l(8, 8, 8, 8), l(24, 24, 24, 24), temp2, temp1
// pv: ABCD, temp1: BADC
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_BFI) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(temp1);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(8);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(24);
shader_code_.push_back(24);
shader_code_.push_back(24);
shader_code_.push_back(24);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(temp1);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Get bits indicating what swaps should be done. The endianness is located in
// the low 2 bits of the second dword of the fetch constant:
// - 00 for no swap.
// - 01 for 8-in-16.
// - 10 for 8-in-32 (8-in-16 and 16-in-32).
// - 11 for 16-in-32.
// ubfe temp2.xy, l(1, 1), l(0, 1), fetch.yy
// pv: ABCD, temp1: BADC, temp2: 8in16/16in32?|8in32/16in32?
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_UBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0011, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(1);
shader_code_.push_back(1);
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(0);
shader_code_.push_back(1);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorReplicatedOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER, (vfetch_index & 1) * 2 + 1, 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(vfetch_index >> 1);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// 16-in-32 is used as intermediate swapping step here rather than 8-in-32.
// Thus 8-in-16 needs to be done for 8-in-16 (01) and 8-in-32 (10).
// And 16-in-32 needs to be done for 8-in-32 (10) and 16-in-32 (11).
// xor temp2.x, temp2.x, temp2.y
// pv: ABCD, temp1: BADC, temp2: 8in16/8in32?|8in32/16in32?
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_XOR) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(temp2);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Write the 8-in-16 value to pv if needed.
// movc pv, temp2.xxxx, temp1, pv
// pv: ABCD/BADC, temp2: 8in16/8in32?|8in32/16in32?
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(temp1);
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;
// 16-in-32: Write the low 16 bits to temp1.
// ushr temp1, pv, l(16, 16, 16, 16)
// pv: ABCD/BADC, temp1: CD00/DC00, temp2: 8in16/8in32?|8in32/16in32?
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_USHR) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(temp1);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// 16-in-32: Write the high 16 bits to temp1.
// bfi temp1, l(16, 16, 16, 16), l(16, 16, 16, 16), pv, temp1
// pv: ABCD/BADC, temp1: CDAB/DCBA, temp2: 8in16/8in32?|8in32/16in32?
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_BFI) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(temp1);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(16);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(temp1);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Write the swapped value to pv.
// movc pv, temp2.yyyy, temp1, pv
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(temp2);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(temp1);
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;
PopSystemTemp(2);
}
void DxbcShaderTranslator::ProcessVertexFetchInstruction(
const ParsedVertexFetchInstruction& instr) {
if (instr.operand_count < 2 ||
instr.operands[1].storage_source !=
InstructionStorageSource::kVertexFetchConstant) {
assert_always();
return;
}
// Get the mask for ld_raw and byte swapping.
uint32_t load_dword_count;
switch (instr.attributes.data_format) {
case VertexFormat::k_8_8_8_8:
case VertexFormat::k_2_10_10_10:
case VertexFormat::k_10_11_11:
case VertexFormat::k_11_11_10:
case VertexFormat::k_16_16:
case VertexFormat::k_16_16_FLOAT:
case VertexFormat::k_32:
case VertexFormat::k_32_FLOAT:
load_dword_count = 1;
break;
case VertexFormat::k_16_16_16_16:
case VertexFormat::k_16_16_16_16_FLOAT:
case VertexFormat::k_32_32:
case VertexFormat::k_32_32_FLOAT:
load_dword_count = 2;
break;
case VertexFormat::k_32_32_32_FLOAT:
load_dword_count = 3;
break;
case VertexFormat::k_32_32_32_32:
case VertexFormat::k_32_32_32_32_FLOAT:
load_dword_count = 4;
break;
default:
assert_unhandled_case(instr.attributes.data_format);
return;
}
// Get the result write mask.
uint32_t result_component_count =
GetVertexFormatComponentCount(instr.attributes.data_format);
if (result_component_count == 0) {
assert_always();
return;
}
uint32_t result_write_mask = (1 << result_component_count) - 1;
if (FLAGS_dxbc_source_map) {
instruction_disassembly_buffer_.Reset();
instr.Disassemble(&instruction_disassembly_buffer_);
// Will be emitted by UpdateInstructionPredication.
}
UpdateInstructionPredication(instr.is_predicated, instr.predicate_condition,
true);
// Convert the index to an integer, according to
// http://web.archive.org/web/20100302145413/http://msdn.microsoft.com:80/en-us/library/bb313960.aspx
// (truncating rather than flooring to skip one operation because negatives
// are not valid anyway, and it's safer if -tiny value becomes 0, also doing
// round-to-nearest rather than round_ne so 0.5, 1.5, 2.5, 3.5 is 1, 2, 3, 4,
// which is more valid as an index sequence than 0, 2, 2, 4).
DxbcSourceOperand index_operand;
LoadDxbcSourceOperand(instr.operands[0], index_operand);
if (instr.attributes.is_index_rounded) {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
5 + DxbcSourceOperandLength(index_operand)));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_pv_);
UseDxbcSourceOperand(index_operand, kSwizzleXYZW, 0);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x3F000000);
++stat_.instruction_count;
++stat_.float_instruction_count;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_FTOU) |
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_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
} else {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_FTOU) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(
3 + DxbcSourceOperandLength(index_operand)));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_pv_);
UseDxbcSourceOperand(index_operand, kSwizzleXYZW, 0);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
}
UnloadDxbcSourceOperand(index_operand);
// TODO(Triang3l): Index clamping maybe.
uint32_t vfetch_index = instr.operands[1].storage_index;
// Get the memory address (taken from the fetch constant - the low 2 bits of
// it are removed because vertices and raw buffer operations are 4-aligned and
// fetch type - 3 for vertices - is stored there). Vertex fetch is specified
// by 2 dwords in fetch constants, but in our case they are 4-component, so
// one vector of fetch constants contains two vfetches.
// TODO(Triang3l): Clamp to buffer size maybe (may be difficult if the buffer
// is smaller than 16).
// http://xboxforums.create.msdn.com/forums/p/7537/39919.aspx#39919
if (cbuffer_index_fetch_constants_ == kCbufferIndexUnallocated) {
cbuffer_index_fetch_constants_ = cbuffer_count_++;
}
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0010, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSelectOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER, (vfetch_index & 1) * 2, 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(vfetch_index >> 1);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x1FFFFFFC);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Calculate the address of the vertex.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_UMAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(instr.attributes.stride * 4);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Add the element offset.
if (instr.attributes.offset != 0) {
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(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(instr.attributes.offset * 4);
++stat_.instruction_count;
++stat_.int_instruction_count;
}
// Select whether shared memory is an SRV or a UAV (depending on whether
// memexport is used in the pipeline) - check the flag.
system_constants_used_ |= 1ull << kSysConst_Flags_Index;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0010, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSelectOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER, kSysConst_Flags_Comp, 3));
shader_code_.push_back(cbuffer_index_system_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kSystemConstants));
shader_code_.push_back(kSysConst_Flags_Vec);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(kSysFlag_SharedMemoryIsUAV);
++stat_.instruction_count;
++stat_.uint_instruction_count;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IF) |
ENCODE_D3D10_SB_INSTRUCTION_TEST_BOOLEAN(
D3D10_SB_INSTRUCTION_TEST_NONZERO) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3));
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.dynamic_flow_control_count;
// Load the vertex data from the shared memory at U0.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_LD_RAW) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(8));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, (1 << load_dword_count) - 1, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D11_SB_OPERAND_TYPE_UNORDERED_ACCESS_VIEW,
kSwizzleXYZW & ((1 << (load_dword_count * 2)) - 1), 2));
shader_code_.push_back(0);
shader_code_.push_back(uint32_t(UAVRegister::kSharedMemory));
++stat_.instruction_count;
++stat_.texture_load_instructions;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ELSE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
// Load the vertex data from the shared memory at T0, register t0.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_LD_RAW) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(8));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, (1 << load_dword_count) - 1, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_RESOURCE,
kSwizzleXYZW & ((1 << (load_dword_count * 2)) - 1), 2));
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.texture_load_instructions;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ENDIF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
// Byte swap the data.
SwapVertexData(vfetch_index, (1 << load_dword_count) - 1);
// Get the data needed for unpacking and converting.
bool extract_signed = instr.attributes.is_signed;
uint32_t extract_widths[4] = {}, extract_offsets[4] = {};
uint32_t extract_swizzle = kSwizzleXXXX;
float normalize_scales[4] = {};
switch (instr.attributes.data_format) {
case VertexFormat::k_8_8_8_8:
extract_widths[0] = extract_widths[1] = extract_widths[2] =
extract_widths[3] = 8;
// Assuming little endian ByteAddressBuffer Load.
extract_offsets[1] = 8;
extract_offsets[2] = 16;
extract_offsets[3] = 24;
normalize_scales[0] = normalize_scales[1] = normalize_scales[2] =
normalize_scales[3] =
instr.attributes.is_signed ? (1.0f / 127.0f) : (1.0f / 255.0f);
break;
case VertexFormat::k_2_10_10_10:
extract_widths[0] = extract_widths[1] = extract_widths[2] = 10;
extract_widths[3] = 2;
extract_offsets[1] = 10;
extract_offsets[2] = 20;
extract_offsets[3] = 30;
normalize_scales[0] = normalize_scales[1] = normalize_scales[2] =
instr.attributes.is_signed ? (1.0f / 511.0f) : (1.0f / 1023.0f);
normalize_scales[3] = instr.attributes.is_signed ? 1.0f : (1.0f / 3.0f);
break;
case VertexFormat::k_10_11_11:
extract_widths[0] = extract_widths[1] = 11;
extract_widths[2] = 10;
extract_offsets[1] = 11;
extract_offsets[2] = 22;
normalize_scales[0] = normalize_scales[1] =
instr.attributes.is_signed ? (1.0f / 1023.0f) : (1.0f / 2047.0f);
normalize_scales[2] =
instr.attributes.is_signed ? (1.0f / 511.0f) : (1.0f / 1023.0f);
break;
case VertexFormat::k_11_11_10:
extract_widths[0] = 10;
extract_widths[1] = extract_widths[2] = 11;
extract_offsets[1] = 10;
extract_offsets[2] = 21;
normalize_scales[0] =
instr.attributes.is_signed ? (1.0f / 511.0f) : (1.0f / 1023.0f);
normalize_scales[1] = normalize_scales[2] =
instr.attributes.is_signed ? (1.0f / 1023.0f) : (1.0f / 2047.0f);
break;
case VertexFormat::k_16_16:
extract_widths[0] = extract_widths[1] = 16;
extract_offsets[1] = 16;
normalize_scales[0] = normalize_scales[1] =
instr.attributes.is_signed ? (1.0f / 32767.0f) : (1.0f / 65535.0f);
break;
case VertexFormat::k_16_16_16_16:
extract_widths[0] = extract_widths[1] = extract_widths[2] =
extract_widths[3] = 16;
extract_offsets[1] = extract_offsets[3] = 16;
extract_swizzle = 0b01010000;
normalize_scales[0] = normalize_scales[1] = normalize_scales[2] =
normalize_scales[3] = instr.attributes.is_signed ? (1.0f / 32767.0f)
: (1.0f / 65535.0f);
break;
case VertexFormat::k_16_16_FLOAT:
extract_signed = false;
extract_widths[0] = extract_widths[1] = 16;
extract_offsets[1] = 16;
break;
case VertexFormat::k_16_16_16_16_FLOAT:
extract_signed = false;
extract_widths[0] = extract_widths[1] = extract_widths[2] =
extract_widths[3] = 16;
extract_offsets[1] = extract_offsets[3] = 16;
extract_swizzle = 0b01010000;
break;
// For 32-bit, extraction is not done at all, so its parameters are ignored.
case VertexFormat::k_32:
case VertexFormat::k_32_32:
case VertexFormat::k_32_32_32_32:
normalize_scales[0] = normalize_scales[1] = normalize_scales[2] =
normalize_scales[3] =
instr.attributes.is_signed ? (1.0f / 2147483647.0f)
: (1.0f / 4294967295.0f);
break;
default:
// 32-bit float.
break;
}
// Extract components from packed data if needed.
if (extract_widths[0] != 0) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(extract_signed ? D3D11_SB_OPCODE_IBFE
: D3D11_SB_OPCODE_UBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(15));
shader_code_.push_back(EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP,
result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(extract_widths[0]);
shader_code_.push_back(extract_widths[1]);
shader_code_.push_back(extract_widths[2]);
shader_code_.push_back(extract_widths[3]);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(extract_offsets[0]);
shader_code_.push_back(extract_offsets[1]);
shader_code_.push_back(extract_offsets[2]);
shader_code_.push_back(extract_offsets[3]);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, extract_swizzle, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
if (extract_signed) {
++stat_.int_instruction_count;
} else {
++stat_.uint_instruction_count;
}
}
// Convert to float and normalize if needed.
if (instr.attributes.data_format == VertexFormat::k_16_16_FLOAT ||
instr.attributes.data_format == VertexFormat::k_16_16_16_16_FLOAT) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_F16TOF32) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP,
result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
} else if (normalize_scales[0] != 0.0f) {
// If no normalize_scales, it's a float value already. Otherwise, convert to
// float and normalize if needed.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(instr.attributes.is_signed
? D3D10_SB_OPCODE_ITOF
: D3D10_SB_OPCODE_UTOF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP,
result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
if (!instr.attributes.is_integer) {
// Normalize.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
for (uint32_t i = 0; i < 4; ++i) {
shader_code_.push_back(
reinterpret_cast<const uint32_t*>(normalize_scales)[i]);
}
++stat_.instruction_count;
++stat_.float_instruction_count;
// Clamp to -1 (both -127 and -128 should be -1 in graphics APIs for
// snorm8).
if (instr.attributes.is_signed) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAX) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0xBF800000u);
shader_code_.push_back(0xBF800000u);
shader_code_.push_back(0xBF800000u);
shader_code_.push_back(0xBF800000u);
++stat_.instruction_count;
++stat_.float_instruction_count;
}
}
}
// Zero unused components if loaded a 32-bit component (because it's not
// bfe'd, in this case, the unused components would have been zeroed already).
if (extract_widths[0] == 0 && result_write_mask != 0b1111) {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(8));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b1111 & ~result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.mov_instruction_count;
}
// Apply the exponent bias.
if (instr.attributes.exp_adjust != 0) {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP,
result_write_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
uint32_t exp_adjust_scale =
uint32_t(0x3F800000 + (instr.attributes.exp_adjust << 23));
shader_code_.push_back(exp_adjust_scale);
shader_code_.push_back(exp_adjust_scale);
shader_code_.push_back(exp_adjust_scale);
shader_code_.push_back(exp_adjust_scale);
++stat_.instruction_count;
++stat_.float_instruction_count;
}
StoreResult(instr.result, system_temp_pv_, false);
}
uint32_t DxbcShaderTranslator::FindOrAddTextureSRV(uint32_t fetch_constant,
TextureDimension dimension,
bool is_signed,
bool is_sign_required) {
// 1D and 2D textures (including stacked ones) are treated as 2D arrays for
// binding and coordinate simplicity.
if (dimension == TextureDimension::k1D) {
dimension = TextureDimension::k2D;
}
// 1 is added to the return value because T0/t0 is shared memory.
for (uint32_t i = 0; i < uint32_t(texture_srvs_.size()); ++i) {
TextureSRV& texture_srv = texture_srvs_[i];
if (texture_srv.fetch_constant == fetch_constant &&
texture_srv.dimension == dimension &&
texture_srv.is_signed == is_signed) {
if (is_sign_required && !texture_srv.is_sign_required) {
// kGetTextureComputedLod uses only the unsigned SRV, which means it
// must be bound even when all components are signed.
texture_srv.is_sign_required = true;
}
return 1 + i;
}
}
if (texture_srvs_.size() >= kMaxTextureSRVs) {
assert_always();
return 1 + (kMaxTextureSRVs - 1);
}
TextureSRV new_texture_srv;
new_texture_srv.fetch_constant = fetch_constant;
new_texture_srv.dimension = dimension;
new_texture_srv.is_signed = is_signed;
new_texture_srv.is_sign_required = is_sign_required;
const char* dimension_name;
switch (dimension) {
case TextureDimension::k3D:
dimension_name = "3d";
break;
case TextureDimension::kCube:
dimension_name = "cube";
break;
default:
dimension_name = "2d";
}
new_texture_srv.name =
xe::format_string("xe_texture%u_%s_%c", fetch_constant, dimension_name,
is_signed ? 's' : 'u');
uint32_t srv_register = 1 + uint32_t(texture_srvs_.size());
texture_srvs_.emplace_back(std::move(new_texture_srv));
return srv_register;
}
uint32_t DxbcShaderTranslator::FindOrAddSamplerBinding(
uint32_t fetch_constant, TextureFilter mag_filter, TextureFilter min_filter,
TextureFilter mip_filter, AnisoFilter aniso_filter) {
// In Direct3D 12, anisotropic filtering implies linear filtering.
if (aniso_filter != AnisoFilter::kDisabled &&
aniso_filter != AnisoFilter::kUseFetchConst) {
mag_filter = TextureFilter::kLinear;
min_filter = TextureFilter::kLinear;
mip_filter = TextureFilter::kLinear;
aniso_filter = std::min(aniso_filter, AnisoFilter::kMax_16_1);
}
for (uint32_t i = 0; i < uint32_t(sampler_bindings_.size()); ++i) {
const SamplerBinding& sampler_binding = sampler_bindings_[i];
if (sampler_binding.fetch_constant == fetch_constant &&
sampler_binding.mag_filter == mag_filter &&
sampler_binding.min_filter == min_filter &&
sampler_binding.mip_filter == mip_filter &&
sampler_binding.aniso_filter == aniso_filter) {
return i;
}
}
if (sampler_bindings_.size() >= kMaxSamplerBindings) {
assert_always();
return kMaxSamplerBindings - 1;
}
std::ostringstream name;
name << "xe_sampler" << fetch_constant;
if (aniso_filter != AnisoFilter::kUseFetchConst) {
if (aniso_filter == AnisoFilter::kDisabled) {
name << "_a0";
} else {
name << "_a" << (1u << (uint32_t(aniso_filter) - 1));
}
}
if (aniso_filter == AnisoFilter::kDisabled ||
aniso_filter == AnisoFilter::kUseFetchConst) {
static const char* kFilterSuffixes[] = {"p", "l", "b", "f"};
name << "_" << kFilterSuffixes[uint32_t(mag_filter)]
<< kFilterSuffixes[uint32_t(min_filter)]
<< kFilterSuffixes[uint32_t(mip_filter)];
}
SamplerBinding new_sampler_binding;
new_sampler_binding.fetch_constant = fetch_constant;
new_sampler_binding.mag_filter = mag_filter;
new_sampler_binding.min_filter = min_filter;
new_sampler_binding.mip_filter = mip_filter;
new_sampler_binding.aniso_filter = aniso_filter;
new_sampler_binding.name = name.str();
uint32_t sampler_register = uint32_t(sampler_bindings_.size());
sampler_bindings_.emplace_back(std::move(new_sampler_binding));
return sampler_register;
}
void DxbcShaderTranslator::ArrayCoordToCubeDirection(uint32_t reg) {
// This does the reverse of what the cube vector ALU instruction does, but
// assuming S and T are normalized.
//
// The major axis depends on the face index (passed as a float in reg.z):
// +X for 0, -X for 1, +Y for 2, -Y for 3, +Z for 4, -Z for 5.
//
// If the major axis is X:
// * X is 1.0 or -1.0.
// * Y is -T.
// * Z is -S for positive X, +S for negative X.
// If it's Y:
// * X is +S.
// * Y is 1.0 or -1.0.
// * Z is +T for positive Y, -T for negative Y.
// If it's Z:
// * X is +S for positive Z, -S for negative Z.
// * Y is -T.
// * Z is 1.0 or -1.0.
// Make 0, not 0.5, the center of S and T.
// mad reg.xy__, reg.xy__, l(2.0, 2.0, _, _), l(-1.0, -1.0, _, _)
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(15));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0011, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(reg);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0x40000000u);
shader_code_.push_back(0x40000000u);
shader_code_.push_back(0x3F800000u);
shader_code_.push_back(0x3F800000u);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0xBF800000u);
shader_code_.push_back(0xBF800000u);
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Clamp the face index to 0...5 for safety (in case an offset was applied).
// max reg.z, reg.z, l(0.0)
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, 0b0100, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.float_instruction_count;
// min reg.z, reg.z, l(5.0)
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, 0b0100, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x40A00000);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Allocate a register for major axis info.
uint32_t major_axis_temp = PushSystemTemp();
// Convert the face index to an integer.
// ftou major_axis_temp.x, reg.z
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_FTOU) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
// Split the face number into major axis number and direction.
// ubfe major_axis_temp.x__w, l(2, _, _, 1), l(1, _, _, 0),
// major_axis_temp.x__x
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, 0b1001, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(2);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(1);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(1);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(major_axis_temp);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Make booleans for whether each axis is major.
// ieq major_axis_temp.xyz_, major_axis_temp.xxx_, l(0, 1, 2, _)
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IEQ) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0);
shader_code_.push_back(1);
shader_code_.push_back(2);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.int_instruction_count;
// Replace the face index in the source/destination with 1.0 or -1.0 for
// swizzling.
// movc reg.z, major_axis_temp.w, l(-1.0), l(1.0)
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0100, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0xBF800000u);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x3F800000u);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Swizzle and negate the coordinates depending on which axis is major, but
// don't negate according to the direction of the major axis (will be done
// later).
// X case.
// movc reg.xyz_, major_axis_temp.xxx_, reg.zyx_, reg.xyz_
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b11000110, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// movc reg._yz_, major_axis_temp._xx_, -reg._yz_, reg._yz_
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0110, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1) |
ENCODE_D3D10_SB_OPERAND_EXTENDED(1));
shader_code_.push_back(
ENCODE_D3D10_SB_EXTENDED_OPERAND_MODIFIER(D3D10_SB_OPERAND_MODIFIER_NEG));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Y case.
// movc reg._yz_, major_axis_temp._yy_, reg._zy_, reg._yz_
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0110, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b11011000, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Z case.
// movc reg.y, major_axis_temp.z, -reg.y, reg.y
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0010, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1) |
ENCODE_D3D10_SB_OPERAND_EXTENDED(1));
shader_code_.push_back(
ENCODE_D3D10_SB_EXTENDED_OPERAND_MODIFIER(D3D10_SB_OPERAND_MODIFIER_NEG));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Flip coordinates according to the direction of the major axis.
// Z needs to be flipped if the major axis is X or Y, so make an X || Y mask.
// X is flipped only when the major axis is Z.
// or major_axis_temp.x, major_axis_temp.x, major_axis_temp.y
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_OR) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(major_axis_temp);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// If the major axis is positive, nothing needs to be flipped. We have
// 0xFFFFFFFF/0 at this point in the major axis mask, but 1/0 in the major
// axis direction (didn't include W in ieq to waste less scalar operations),
// but AND would result in 1/0, which is fine for movc too.
// and major_axis_temp.x_z_, major_axis_temp.x_z_, major_axis_temp.w_w_
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0101, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(major_axis_temp);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Flip axes that need to be flipped.
// movc reg.x_z_, major_axis_temp.z_x_, -reg.x_z_, reg.x_z_
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0101, 1));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b11000110, 1));
shader_code_.push_back(major_axis_temp);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1) |
ENCODE_D3D10_SB_OPERAND_EXTENDED(1));
shader_code_.push_back(
ENCODE_D3D10_SB_EXTENDED_OPERAND_MODIFIER(D3D10_SB_OPERAND_MODIFIER_NEG));
shader_code_.push_back(reg);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(reg);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Release major_axis_temp.
PopSystemTemp();
}
void DxbcShaderTranslator::ProcessTextureFetchInstruction(
const ParsedTextureFetchInstruction& instr) {
if (FLAGS_dxbc_source_map) {
instruction_disassembly_buffer_.Reset();
instr.Disassemble(&instruction_disassembly_buffer_);
// Will be emitted later explicitly or by UpdateInstructionPredication.
}
// Predication should not affect derivative calculation:
// https://docs.microsoft.com/en-us/windows/desktop/direct3dhlsl/dx9-graphics-reference-asm-ps-registers-output-color
// Do the part involving derivative calculation unconditionally, and re-enter
// the predicate check before writing the result.
bool suppress_predication = false;
if (IsDxbcPixelShader()) {
if (instr.opcode == FetchOpcode::kGetTextureComputedLod ||
instr.opcode == FetchOpcode::kGetTextureGradients) {
suppress_predication = true;
} else if (instr.opcode == FetchOpcode::kTextureFetch) {
suppress_predication = instr.attributes.use_computed_lod &&
!instr.attributes.use_register_lod;
}
}
uint32_t exec_p0_temp = UINT32_MAX;
if (suppress_predication) {
// Emit the disassembly before all this to indicate the reason of going
// unconditional.
EmitInstructionDisassembly();
// Close instruction-level predication.
CloseInstructionPredication();
// Temporarily close exec-level predication - will reopen at the end, so not
// changing cf_exec_predicated_.
if (cf_exec_predicated_) {
if (cf_exec_predicate_written_) {
// Restore the predicate value in the beginning of the exec and put it
// in exec_p0_temp.
exec_p0_temp = PushSystemTemp();
// `if` case - the value was cf_exec_predicate_condition_.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(exec_p0_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(cf_exec_predicate_condition_ ? 0xFFFFFFFFu : 0u);
++stat_.instruction_count;
++stat_.mov_instruction_count;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ELSE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
// `else` case - the value was !cf_exec_predicate_condition_.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(exec_p0_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(cf_exec_predicate_condition_ ? 0u : 0xFFFFFFFFu);
++stat_.instruction_count;
++stat_.mov_instruction_count;
}
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ENDIF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
}
} else {
UpdateInstructionPredication(instr.is_predicated, instr.predicate_condition,
true);
}
bool store_result = false;
// Whether the result is only in X and all components should be remapped to X
// while storing.
bool replicate_result = false;
DxbcSourceOperand operand;
uint32_t operand_length = 0;
if (instr.operand_count >= 1) {
LoadDxbcSourceOperand(instr.operands[0], operand);
operand_length = DxbcSourceOperandLength(operand);
}
uint32_t tfetch_index = instr.operands[1].storage_index;
// Fetch constants are laid out like:
// tf0[0] tf0[1] tf0[2] tf0[3]
// tf0[4] tf0[5] tf1[0] tf1[1]
// tf1[2] tf1[3] tf1[4] tf1[5]
uint32_t tfetch_pair_offset = (tfetch_index >> 1) * 3;
// TODO(Triang3l): kGetTextureBorderColorFrac.
if (!IsDxbcPixelShader() &&
(instr.opcode == FetchOpcode::kGetTextureComputedLod ||
instr.opcode == FetchOpcode::kGetTextureGradients)) {
// Quickly skip everything if tried to get anything involving derivatives
// not in a pixel shader because only the pixel shader has derivatives.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(8));
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_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.mov_instruction_count;
} else if (instr.opcode == FetchOpcode::kTextureFetch ||
instr.opcode == FetchOpcode::kGetTextureComputedLod ||
instr.opcode == FetchOpcode::kGetTextureWeights) {
store_result = true;
// 0 is unsigned, 1 is signed.
uint32_t srv_registers[2] = {UINT32_MAX, UINT32_MAX};
uint32_t srv_registers_stacked[2] = {UINT32_MAX, UINT32_MAX};
uint32_t sampler_register = UINT32_MAX;
// Only the fetch constant needed for kGetTextureWeights.
if (instr.opcode != FetchOpcode::kGetTextureWeights) {
if (instr.opcode == FetchOpcode::kGetTextureComputedLod) {
// The LOD is a scalar and it doesn't depend on the texture contents, so
// require any variant - unsigned in this case because more texture
// formats support it.
srv_registers[0] =
FindOrAddTextureSRV(tfetch_index, instr.dimension, false, true);
if (instr.dimension == TextureDimension::k3D) {
// 3D or 2D stacked is selected dynamically.
srv_registers_stacked[0] = FindOrAddTextureSRV(
tfetch_index, TextureDimension::k2D, false, true);
}
} else {
srv_registers[0] =
FindOrAddTextureSRV(tfetch_index, instr.dimension, false);
srv_registers[1] =
FindOrAddTextureSRV(tfetch_index, instr.dimension, true);
if (instr.dimension == TextureDimension::k3D) {
// 3D or 2D stacked is selected dynamically.
srv_registers_stacked[0] =
FindOrAddTextureSRV(tfetch_index, TextureDimension::k2D, false);
srv_registers_stacked[1] =
FindOrAddTextureSRV(tfetch_index, TextureDimension::k2D, true);
}
}
sampler_register = FindOrAddSamplerBinding(
tfetch_index, instr.attributes.mag_filter,
instr.attributes.min_filter, instr.attributes.mip_filter,
instr.attributes.aniso_filter);
}
uint32_t coord_temp = PushSystemTemp();
// Move coordinates to pv temporarily so zeros can be added to expand them
// to Texture2DArray coordinates and to apply offset. Or, if the instruction
// is getWeights, move them to pv because their fractional part will be
// returned.
uint32_t coord_mask = 0b0111;
switch (instr.dimension) {
case TextureDimension::k1D:
coord_mask = 0b0001;
break;
case TextureDimension::k2D:
coord_mask = 0b0011;
break;
case TextureDimension::k3D:
coord_mask = 0b0111;
break;
case TextureDimension::kCube:
// Don't need the 3rd component for getWeights because it's the face
// index, so it doesn't participate in bilinear filtering.
coord_mask =
instr.opcode == FetchOpcode::kGetTextureWeights ? 0b0011 : 0b0111;
break;
}
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3 + operand_length));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(coord_temp);
UseDxbcSourceOperand(operand);
++stat_.instruction_count;
++stat_.mov_instruction_count;
// If 1D or 2D, fill the unused coordinates with zeros (sampling the only
// row of the only slice). For getWeights, also clear the 4th component
// because the coordinates will be returned.
uint32_t coord_all_components_mask =
instr.opcode == FetchOpcode::kGetTextureWeights ? 0b1111 : 0b0111;
uint32_t coord_zero_mask = coord_all_components_mask & ~coord_mask;
if (coord_zero_mask) {
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(8));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, coord_zero_mask, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.mov_instruction_count;
}
// Get the offset to see if the size of the texture is needed.
// It's probably applicable to tfetchCube too, we're going to assume it's
// used for them the same way as for stacked textures.
// http://web.archive.org/web/20090511231340/http://msdn.microsoft.com:80/en-us/library/bb313959.aspx
// Adding 1/1024 - quarter of one fixed-point unit of subpixel precision
// (not to touch rounding when the GPU is converting to fixed-point) - to
// resolve the ambiguity when the texture coordinate is directly between two
// pixels, which hurts nearest-neighbor sampling (fixes the XBLA logo being
// blocky in Banjo-Kazooie and the outlines around things and overall
// blockiness in Halo 3).
// TODO(Triang3l): Investigate the sign of this epsilon, because in Halo 3
// positive causes thin outlines with MSAA (with ROV), and negative causes
// thick outlines with SSAA there.
float offset_x = instr.attributes.offset_x + (1.0f / 1024.0f);
if (instr.opcode == FetchOpcode::kGetTextureWeights) {
// Needed for correct shadow filtering (at least in Halo 3).
offset_x += 0.5f;
}
float offset_y = 0.0f, offset_z = 0.0f;
if (instr.dimension == TextureDimension::k2D ||
instr.dimension == TextureDimension::k3D ||
instr.dimension == TextureDimension::kCube) {
offset_y = instr.attributes.offset_y + (1.0f / 1024.0f);
if (instr.opcode == FetchOpcode::kGetTextureWeights) {
offset_y += 0.5f;
}
// Don't care about the Z offset for cubemaps when getting weights because
// zero Z will be returned anyway (the face index doesn't participate in
// bilinear filtering).
if (instr.dimension == TextureDimension::k3D ||
(instr.dimension == TextureDimension::kCube &&
instr.opcode != FetchOpcode::kGetTextureWeights)) {
offset_z = instr.attributes.offset_z;
if (instr.dimension == TextureDimension::k3D) {
// Z is the face index for cubemaps, so don't apply the epsilon to it.
offset_z += 1.0f / 1024.0f;
if (instr.opcode == FetchOpcode::kGetTextureWeights) {
offset_z += 0.5f;
}
}
}
}
// Get the texture size if needed, apply offset and switch between
// normalized and unnormalized coordinates if needed. The offset is
// fractional on the Xbox 360 (has 0.5 granularity), unlike in Direct3D 12,
// and cubemaps possibly can have offset and their coordinates are different
// than in Direct3D 12 (like an array texture rather than a direction).
// getWeights instructions also need the texture size because they work like
// frac(coord * texture_size).
// TODO(Triang3l): Unnormalized coordinates should be disabled when the
// wrap mode is not a clamped one, though it's probably a very rare case,
// unlikely to be used on purpose.
// http://web.archive.org/web/20090514012026/http://msdn.microsoft.com:80/en-us/library/bb313957.aspx
uint32_t size_and_is_3d_temp = UINT32_MAX;
// With 1/1024 this will always be true anyway, but let's keep the shorter
// path without the offset in case some day this hack won't be used anymore
// somehow.
bool has_offset = offset_x != 0.0f || offset_y != 0.0f || offset_z != 0.0f;
if (instr.opcode == FetchOpcode::kGetTextureWeights || has_offset ||
instr.attributes.unnormalized_coordinates ||
instr.dimension == TextureDimension::k3D) {
size_and_is_3d_temp = PushSystemTemp();
// Will use fetch constants for the size.
if (cbuffer_index_fetch_constants_ == kCbufferIndexUnallocated) {
cbuffer_index_fetch_constants_ = cbuffer_count_++;
}
// Get 2D texture size and array layer count, in bits 0:12, 13:25, 26:31
// of dword 2 ([0].z or [2].x).
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_UBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(13);
shader_code_.push_back(instr.dimension != TextureDimension::k1D ? 13 : 0);
shader_code_.push_back(instr.dimension == TextureDimension::k3D ? 6 : 0);
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0);
shader_code_.push_back(13);
shader_code_.push_back(26);
shader_code_.push_back(0);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
2 - 2 * (tfetch_index & 1), 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(tfetch_pair_offset + (tfetch_index & 1) * 2);
++stat_.instruction_count;
++stat_.uint_instruction_count;
if (instr.dimension == TextureDimension::k3D) {
// Write whether the texture is 3D to W if it's 3D/stacked, as
// 0xFFFFFFFF for 3D or 0 for stacked. The dimension is in dword 5 in
// bits 9:10.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1000, 1));
shader_code_.push_back(size_and_is_3d_temp);
// Dword 5 is [1].y or [2].w.
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
1 + 2 * (tfetch_index & 1), 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(tfetch_pair_offset + 1 + (tfetch_index & 1));
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x3 << 9);
++stat_.instruction_count;
++stat_.uint_instruction_count;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IEQ) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1000, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(uint32_t(Dimension::k3D) << 9);
++stat_.instruction_count;
++stat_.int_instruction_count;
uint32_t size_3d_temp = PushSystemTemp();
// Get 3D texture size to a temporary variable (in the same constant,
// but 11:11:10).
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_UBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(size_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(11);
shader_code_.push_back(11);
shader_code_.push_back(10);
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0);
shader_code_.push_back(11);
shader_code_.push_back(22);
shader_code_.push_back(0);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
2 - 2 * (tfetch_index & 1), 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(tfetch_pair_offset + (tfetch_index & 1) * 2);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Replace the 2D size with the 3D one if the texture is 3D.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Release size_3d_temp.
PopSystemTemp();
}
// Convert the size to float.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_UTOF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
++stat_.instruction_count;
++stat_.conversion_instruction_count;
// Add 1 to the size because fetch constants store size minus one.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0x3F800000);
shader_code_.push_back(0x3F800000);
shader_code_.push_back(0x3F800000);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.float_instruction_count;
if (instr.opcode == FetchOpcode::kGetTextureWeights) {
// Weights for bilinear filtering - need to get the fractional part of
// unnormalized coordinates.
if (instr.attributes.unnormalized_coordinates) {
if (has_offset) {
// Apply the offset.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_x));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_y));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_z));
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.float_instruction_count;
}
} else {
// Unnormalize the coordinates and apply the offset.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(has_offset ? D3D10_SB_OPCODE_MAD
: D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(has_offset ? 12
: 7));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
if (has_offset) {
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_x));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_y));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_z));
shader_code_.push_back(0);
}
++stat_.instruction_count;
++stat_.float_instruction_count;
}
if (instr.dimension == TextureDimension::k3D) {
// Ignore Z if it's the texture is stacked - it's the array layer, so
// there's no filtering across Z. Keep it only for 3D textures. This
// assumes that the 3D/stacked flag is 0xFFFFFFFF or 0.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_AND) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0100, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(size_and_is_3d_temp);
++stat_.instruction_count;
++stat_.uint_instruction_count;
}
} else {
// Texture fetch - need to get normalized coordinates (with unnormalized
// Z for stacked textures).
if (instr.dimension == TextureDimension::k3D) {
// Both 3D textures and 2D arrays have their Z coordinate normalized,
// however, on PC, array elements have unnormalized indices.
// https://www.slideshare.net/blackdevilvikas/next-generation-graphics-programming-on-xbox-360
// Put the array layer in W - Z * depth if the fetch uses normalized
// coordinates, and Z if it uses unnormalized.
if (instr.attributes.unnormalized_coordinates) {
++stat_.instruction_count;
if (offset_z != 0.0f) {
++stat_.float_instruction_count;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
} else {
++stat_.mov_instruction_count;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
}
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b1000, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(coord_temp);
if (offset_z != 0.0f) {
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_x));
}
} else {
if (offset_z != 0.0f) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
} else {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
}
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b1000, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(size_and_is_3d_temp);
if (offset_z != 0.0f) {
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_x));
}
++stat_.instruction_count;
++stat_.float_instruction_count;
}
}
if (has_offset || instr.attributes.unnormalized_coordinates) {
// Take the reciprocal of the size to normalize the coordinates and
// the offset (this is not necessary to just sample 3D/array with
// normalized coordinates and no offset). For cubemaps, there will be
// 1 in Z, so this will work.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_RCP) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Normalize the coordinates.
if (instr.attributes.unnormalized_coordinates) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
++stat_.instruction_count;
++stat_.float_instruction_count;
}
// Apply the offset (coord = offset * 1/size + coord).
if (has_offset) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(12));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_x));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_y));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&offset_z));
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(size_and_is_3d_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
++stat_.instruction_count;
++stat_.float_instruction_count;
}
}
}
}
if (instr.opcode == FetchOpcode::kGetTextureWeights) {
// Return the fractional part of unnormalized coordinates as bilinear
// filtering weights.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_FRC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(5));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, coord_mask, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
++stat_.instruction_count;
++stat_.float_instruction_count;
} else {
if (instr.dimension == TextureDimension::kCube) {
// Convert cubemap coordinates passed as 2D array texture coordinates to
// a 3D direction. We can't use a 2D array to emulate cubemaps because
// at the edges, especially in pixel shader helper invocations, the
// major axis changes, causing S/T to jump between 0 and 1, breaking
// gradient calculation and causing the 1x1 mipmap to be sampled.
ArrayCoordToCubeDirection(coord_temp);
}
// Bias the register LOD if fetching with explicit LOD (so this is not
// done two or four times due to 3D/stacked and unsigned/signed).
uint32_t lod_temp = system_temp_grad_h_lod_, lod_temp_component = 3;
if (instr.opcode == FetchOpcode::kTextureFetch &&
instr.attributes.use_register_lod &&
instr.attributes.lod_bias != 0.0f) {
lod_temp = PushSystemTemp();
lod_temp_component = 0;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(lod_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(system_temp_grad_h_lod_);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(
*reinterpret_cast<const uint32_t*>(&instr.attributes.lod_bias));
++stat_.instruction_count;
++stat_.float_instruction_count;
}
// Allocate the register for the value from the signed texture.
uint32_t signed_value_temp = instr.opcode == FetchOpcode::kTextureFetch
? PushSystemTemp()
: UINT32_MAX;
// tfetch1D/2D/Cube just fetch directly. tfetch3D needs to fetch either
// the 3D texture or the 2D stacked texture, so two sample instructions
// selected conditionally are used in this case.
if (instr.dimension == TextureDimension::k3D) {
assert_true(size_and_is_3d_temp != UINT32_MAX);
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IF) |
ENCODE_D3D10_SB_INSTRUCTION_TEST_BOOLEAN(
D3D10_SB_INSTRUCTION_TEST_NONZERO) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3));
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 3, 1));
shader_code_.push_back(size_and_is_3d_temp);
++stat_.instruction_count;
++stat_.dynamic_flow_control_count;
}
// Sample both 3D and 2D array bindings for tfetch3D.
for (uint32_t i = 0;
i < (instr.dimension == TextureDimension::k3D ? 2u : 1u); ++i) {
if (i) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ELSE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
}
// Sample both unsigned and signed.
for (uint32_t j = 0; j < 2; ++j) {
uint32_t srv_register_current =
i ? srv_registers_stacked[j] : srv_registers[j];
uint32_t target_temp_current =
j ? signed_value_temp : system_temp_pv_;
if (instr.opcode == FetchOpcode::kGetTextureComputedLod) {
// The non-pixel-shader case should be handled before because it
// just returns a constant in this case.
assert_true(IsDxbcPixelShader());
replicate_result = true;
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_1_SB_OPCODE_LOD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(11));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(target_temp_current);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_RESOURCE, kSwizzleXYZW, 2));
shader_code_.push_back(srv_register_current);
shader_code_.push_back(srv_register_current);
shader_code_.push_back(
EncodeZeroComponentOperand(D3D10_SB_OPERAND_TYPE_SAMPLER, 2));
shader_code_.push_back(sampler_register);
shader_code_.push_back(sampler_register);
++stat_.instruction_count;
++stat_.lod_instructions;
// Apply the LOD bias if used.
if (instr.attributes.lod_bias != 0.0f) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(target_temp_current);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(target_temp_current);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(*reinterpret_cast<const uint32_t*>(
&instr.attributes.lod_bias));
++stat_.instruction_count;
++stat_.float_instruction_count;
}
// In this case, only the unsigned variant is accessed because data
// doesn't matter.
break;
} else if (instr.attributes.use_register_lod) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_SAMPLE_L) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(13));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(target_temp_current);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_RESOURCE, kSwizzleXYZW, 2));
shader_code_.push_back(srv_register_current);
shader_code_.push_back(srv_register_current);
shader_code_.push_back(
EncodeZeroComponentOperand(D3D10_SB_OPERAND_TYPE_SAMPLER, 2));
shader_code_.push_back(sampler_register);
shader_code_.push_back(sampler_register);
shader_code_.push_back(EncodeVectorSelectOperand(
D3D10_SB_OPERAND_TYPE_TEMP, lod_temp_component, 1));
shader_code_.push_back(lod_temp);
++stat_.instruction_count;
++stat_.texture_normal_instructions;
} else if (instr.attributes.use_register_gradients) {
// TODO(Triang3l): Apply the LOD bias somehow for register gradients
// (possibly will require moving the bias to the sampler, which may
// be not very good considering the sampler count is very limited).
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_SAMPLE_D) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(15));
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(target_temp_current);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_RESOURCE, kSwizzleXYZW, 2));
shader_code_.push_back(srv_register_current);
shader_code_.push_back(srv_register_current);
shader_code_.push_back(
EncodeZeroComponentOperand(D3D10_SB_OPERAND_TYPE_SAMPLER, 2));
shader_code_.push_back(sampler_register);
shader_code_.push_back(sampler_register);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_grad_h_lod_);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(system_temp_grad_v_);
++stat_.instruction_count;
++stat_.texture_gradient_instructions;
} else {
// 3 different DXBC opcodes handled here:
// - sample_l, when not using a computed LOD or not in a pixel
// shader, in this case, LOD (0 + bias) is sampled.
// - sample, when sampling in a pixel shader (thus with derivatives)
// with a computed LOD.
// - sample_b, when sampling in a pixel shader with a biased
// computed LOD.
// Both sample_l and sample_b should add the LOD bias as the last
// operand in our case.
bool explicit_lod =
!instr.attributes.use_computed_lod || !IsDxbcPixelShader();
if (explicit_lod) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_SAMPLE_L) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(13));
} else if (instr.attributes.lod_bias != 0.0f) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_SAMPLE_B) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(13));
} else {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_SAMPLE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(11));
}
shader_code_.push_back(EncodeVectorMaskedOperand(
D3D10_SB_OPERAND_TYPE_TEMP, 0b1111, 1));
shader_code_.push_back(target_temp_current);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(coord_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_RESOURCE, kSwizzleXYZW, 2));
shader_code_.push_back(srv_register_current);
shader_code_.push_back(srv_register_current);
shader_code_.push_back(
EncodeZeroComponentOperand(D3D10_SB_OPERAND_TYPE_SAMPLER, 2));
shader_code_.push_back(sampler_register);
shader_code_.push_back(sampler_register);
if (explicit_lod || instr.attributes.lod_bias != 0.0f) {
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(*reinterpret_cast<const uint32_t*>(
&instr.attributes.lod_bias));
}
++stat_.instruction_count;
if (!explicit_lod && instr.attributes.lod_bias != 0.0f) {
++stat_.texture_bias_instructions;
} else {
++stat_.texture_normal_instructions;
}
}
}
}
if (instr.dimension == TextureDimension::k3D) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ENDIF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
}
if (instr.opcode == FetchOpcode::kTextureFetch) {
// Will take sign values and exponent bias from the fetch constant.
if (cbuffer_index_fetch_constants_ == kCbufferIndexUnallocated) {
cbuffer_index_fetch_constants_ = cbuffer_count_++;
}
assert_true(signed_value_temp != UINT32_MAX);
uint32_t sign_temp = PushSystemTemp();
// Choose between channels from the unsigned SRV and the signed one,
// apply sign bias (2 * color - 1) and linearize gamma textures.
// This is done before applying the exponent bias because biasing and
// linearization must be done on color values in 0...1 range, and this
// is closer to the storage format, while exponent bias is closer to the
// actual usage in shaders.
for (uint32_t i = 0; i < 4; ++i) {
// Extract the sign values from dword 0 ([0].x or [1].z) of the fetch
// constant (in bits 2:9, 2 bits per component) to sign_temp.x.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_UBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(11));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(2);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(2 + i * 2);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
(tfetch_index & 1) * 2, 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(tfetch_pair_offset + (tfetch_index & 1));
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Get if the channel is signed to sign_temp.y.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IEQ) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0010, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(uint32_t(TextureSign::kSigned));
++stat_.instruction_count;
++stat_.int_instruction_count;
// Choose between the unsigned and the signed channel.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1 << i, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, i, 1));
shader_code_.push_back(signed_value_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, i, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Get if the channel is biased to sign_temp.y.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IEQ) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0010, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(uint32_t(TextureSign::kUnsignedBiased));
++stat_.instruction_count;
++stat_.int_instruction_count;
// Expand 0...1 to -1...1 (for normal and DuDv maps, for instance) to
// sign_temp.z.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MAD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0100, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, i, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x40000000u);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0xBF800000u);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Choose between the unbiased and the biased channel.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOVC) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(9));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1 << i, 1));
shader_code_.push_back(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 1, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 2, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, i, 1));
shader_code_.push_back(system_temp_pv_);
++stat_.instruction_count;
++stat_.movc_instruction_count;
// Get if the channel is in PWL gamma to sign_temp.x.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IEQ) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(sign_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(uint32_t(TextureSign::kGamma));
++stat_.instruction_count;
++stat_.int_instruction_count;
// Check if need to degamma.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IF) |
ENCODE_D3D10_SB_INSTRUCTION_TEST_BOOLEAN(
D3D10_SB_INSTRUCTION_TEST_NONZERO) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3));
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(sign_temp);
++stat_.instruction_count;
++stat_.dynamic_flow_control_count;
// Degamma the channel.
ConvertPWLGamma(false, system_temp_pv_, i, system_temp_pv_, i,
sign_temp, 0, sign_temp, 1);
// Close the gamma conditional.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ENDIF) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(1));
++stat_.instruction_count;
}
// Release sign_temp.
PopSystemTemp();
// Apply exponent bias.
uint32_t exp_adjust_temp = PushSystemTemp();
// Get the bias value in bits 13:18 of dword 3, which is [0].w or [2].y.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_IBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(11));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(exp_adjust_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(6);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(13);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER,
3 - 2 * (tfetch_index & 1), 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(tfetch_pair_offset + (tfetch_index & 1) * 2);
++stat_.instruction_count;
++stat_.uint_instruction_count;
// Shift it into float exponent bits.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ISHL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0001, 1));
shader_code_.push_back(exp_adjust_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(exp_adjust_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(23);
++stat_.instruction_count;
++stat_.int_instruction_count;
// Add this to the exponent of 1.0.
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(exp_adjust_temp);
shader_code_.push_back(
EncodeVectorSelectOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(exp_adjust_temp);
shader_code_.push_back(
EncodeScalarOperand(D3D10_SB_OPERAND_TYPE_IMMEDIATE32, 0));
shader_code_.push_back(0x3F800000);
++stat_.instruction_count;
++stat_.int_instruction_count;
// Multiply the value from the texture by 2.0^bias.
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
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(system_temp_pv_);
shader_code_.push_back(
EncodeVectorReplicatedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0, 1));
shader_code_.push_back(exp_adjust_temp);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Release exp_adjust_temp.
PopSystemTemp();
}
if (signed_value_temp != UINT32_MAX) {
PopSystemTemp();
}
if (lod_temp != system_temp_grad_h_lod_) {
PopSystemTemp();
}
}
if (size_and_is_3d_temp != UINT32_MAX) {
PopSystemTemp();
}
// Release coord_temp.
PopSystemTemp();
} else if (instr.opcode == FetchOpcode::kGetTextureGradients) {
assert_true(IsDxbcPixelShader());
store_result = true;
// pv.xz = ddx(coord.xy)
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_DERIV_RTX_COARSE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3 + operand_length));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0101, 1));
shader_code_.push_back(system_temp_pv_);
UseDxbcSourceOperand(operand, 0b01010000);
++stat_.instruction_count;
++stat_.float_instruction_count;
// pv.yw = ddy(coord.xy)
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_DERIV_RTY_COARSE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3 + operand_length));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1010, 1));
shader_code_.push_back(system_temp_pv_);
UseDxbcSourceOperand(operand, 0b01010000);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Get the exponent bias (horizontal in bits 22:26, vertical in bits 27:31
// of dword 4 ([1].x or [2].z) of the fetch constant).
if (cbuffer_index_fetch_constants_ == kCbufferIndexUnallocated) {
cbuffer_index_fetch_constants_ = cbuffer_count_++;
}
uint32_t exp_bias_temp = PushSystemTemp();
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D11_SB_OPCODE_IBFE) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(17));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0011, 1));
shader_code_.push_back(exp_bias_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(5);
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(22);
shader_code_.push_back(27);
shader_code_.push_back(0);
shader_code_.push_back(0);
shader_code_.push_back(EncodeVectorReplicatedOperand(
D3D10_SB_OPERAND_TYPE_CONSTANT_BUFFER, (tfetch_index & 1) * 2, 3));
shader_code_.push_back(cbuffer_index_fetch_constants_);
shader_code_.push_back(uint32_t(CbufferRegister::kFetchConstants));
shader_code_.push_back(tfetch_pair_offset + 1 + (tfetch_index & 1));
++stat_.instruction_count;
++stat_.int_instruction_count;
// Shift the exponent bias into float exponent bits.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_ISHL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0011, 1));
shader_code_.push_back(exp_bias_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(exp_bias_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(23);
shader_code_.push_back(23);
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.int_instruction_count;
// Add the bias to the exponent of 1.0.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IADD) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(10));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0011, 1));
shader_code_.push_back(exp_bias_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_TEMP, kSwizzleXYZW, 1));
shader_code_.push_back(exp_bias_temp);
shader_code_.push_back(EncodeVectorSwizzledOperand(
D3D10_SB_OPERAND_TYPE_IMMEDIATE32, kSwizzleXYZW, 0));
shader_code_.push_back(0x3F800000);
shader_code_.push_back(0x3F800000);
shader_code_.push_back(0);
shader_code_.push_back(0);
++stat_.instruction_count;
++stat_.int_instruction_count;
// Apply the exponent bias.
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MUL) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(7));
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(system_temp_pv_);
shader_code_.push_back(
EncodeVectorSwizzledOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b01000100, 1));
shader_code_.push_back(exp_bias_temp);
++stat_.instruction_count;
++stat_.float_instruction_count;
// Release exp_bias_temp.
PopSystemTemp();
} else if (instr.opcode == FetchOpcode::kSetTextureLod) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3 + operand_length));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b1000, 1));
shader_code_.push_back(system_temp_grad_h_lod_);
UseDxbcSourceOperand(operand, kSwizzleXYZW, 0);
++stat_.instruction_count;
++stat_.mov_instruction_count;
} else if (instr.opcode == FetchOpcode::kSetTextureGradientsHorz ||
instr.opcode == FetchOpcode::kSetTextureGradientsVert) {
shader_code_.push_back(
ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_MOV) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3 + operand_length));
shader_code_.push_back(
EncodeVectorMaskedOperand(D3D10_SB_OPERAND_TYPE_TEMP, 0b0111, 1));
shader_code_.push_back(instr.opcode == FetchOpcode::kSetTextureGradientsVert
? system_temp_grad_v_
: system_temp_grad_h_lod_);
UseDxbcSourceOperand(operand);
++stat_.instruction_count;
++stat_.mov_instruction_count;
}
if (instr.operand_count >= 1) {
UnloadDxbcSourceOperand(operand);
}
// Re-enter conditional execution if closed it.
if (suppress_predication) {
// Re-enter exec-level predication.
if (cf_exec_predicated_) {
D3D10_SB_INSTRUCTION_TEST_BOOLEAN test =
cf_exec_predicate_condition_ ? D3D10_SB_INSTRUCTION_TEST_NONZERO
: D3D10_SB_INSTRUCTION_TEST_ZERO;
shader_code_.push_back(ENCODE_D3D10_SB_OPCODE_TYPE(D3D10_SB_OPCODE_IF) |
ENCODE_D3D10_SB_INSTRUCTION_TEST_BOOLEAN(test) |
ENCODE_D3D10_SB_TOKENIZED_INSTRUCTION_LENGTH(3));
shader_code_.push_back(EncodeVectorSelectOperand(
D3D10_SB_OPERAND_TYPE_TEMP, exec_p0_temp != UINT32_MAX ? 0 : 2, 1));
shader_code_.push_back(
exec_p0_temp != UINT32_MAX ? exec_p0_temp : system_temp_ps_pc_p0_a0_);
++stat_.instruction_count;
++stat_.dynamic_flow_control_count;
if (exec_p0_temp != UINT32_MAX) {
PopSystemTemp();
}
}
// Update instruction-level predication to the one needed by this tfetch.
UpdateInstructionPredication(instr.is_predicated, instr.predicate_condition,
false);
}
if (store_result) {
StoreResult(instr.result, system_temp_pv_, replicate_result);
}
}
} // namespace gpu
} // namespace xe
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