1358 lines
53 KiB
C++
1358 lines
53 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2015 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/gpu/shader_translator.h"
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#include <algorithm>
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#include <cstdarg>
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#include <cstring>
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#include <set>
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#include <string>
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#include "xenia/base/assert.h"
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#include "xenia/base/logging.h"
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#include "xenia/base/math.h"
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#include "xenia/gpu/gpu_flags.h"
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namespace xe {
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namespace gpu {
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using namespace ucode;
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// The Xbox 360 GPU is effectively an Adreno A200:
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// https://github.com/freedreno/freedreno/wiki/A2XX-Shader-Instruction-Set-Architecture
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//
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// A lot of this information is derived from the freedreno drivers, AMD's
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// documentation, publicly available Xbox presentations (from GDC/etc), and
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// other reverse engineering.
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//
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// Naming has been matched as closely as possible to the real thing by using the
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// publicly available XNA Game Studio shader assembler.
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// You can find a tool for exploring this under tools/shader-playground/,
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// allowing interative assembling/disassembling of shader code.
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//
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// Though the 360's GPU is similar to the Adreno r200, the microcode format is
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// slightly different. Though this is a great guide it cannot be assumed it
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// matches the 360 in all areas:
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// https://github.com/freedreno/freedreno/blob/master/util/disasm-a2xx.c
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//
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// Lots of naming comes from the disassembly spit out by the XNA GS compiler
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// and dumps of d3dcompiler and games: https://pastebin.com/i4kAv7bB
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void Shader::AnalyzeUcode(StringBuffer& ucode_disasm_buffer) {
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if (is_ucode_analyzed_) {
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return;
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}
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// Control flow instructions come paired in blocks of 3 dwords and all are
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// listed at the top of the ucode.
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// Each control flow instruction is executed sequentially until the final
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// ending instruction.
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// Gather the upper bound of the control flow instructions, and label
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// addresses, which are needed for disassembly.
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cf_pair_index_bound_ = uint32_t(ucode_data_.size() / 3);
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for (uint32_t i = 0; i < cf_pair_index_bound_; ++i) {
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ControlFlowInstruction cf_ab[2];
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UnpackControlFlowInstructions(ucode_data_.data() + i * 3, cf_ab);
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for (uint32_t j = 0; j < 2; ++j) {
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// Guess how long the control flow program is by scanning for the first
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// kExec-ish and instruction and using its address as the upper bound.
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// This is what freedreno does.
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const ControlFlowInstruction& cf = cf_ab[j];
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if (IsControlFlowOpcodeExec(cf.opcode())) {
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cf_pair_index_bound_ =
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std::min(cf_pair_index_bound_, cf.exec.address());
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}
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switch (cf.opcode()) {
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case ControlFlowOpcode::kCondCall:
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label_addresses_.insert(cf.cond_call.address());
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break;
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case ControlFlowOpcode::kCondJmp:
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label_addresses_.insert(cf.cond_jmp.address());
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break;
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case ControlFlowOpcode::kLoopStart:
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label_addresses_.insert(cf.loop_start.address());
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break;
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case ControlFlowOpcode::kLoopEnd:
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label_addresses_.insert(cf.loop_end.address());
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break;
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default:
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break;
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}
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}
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}
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// Disassemble and gather information.
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ucode_disasm_buffer.Reset();
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VertexFetchInstruction previous_vfetch_full;
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std::memset(&previous_vfetch_full, 0, sizeof(previous_vfetch_full));
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uint32_t unique_texture_bindings = 0;
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uint32_t memexport_alloc_count = 0;
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uint32_t memexport_eA_written = 0;
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for (uint32_t i = 0; i < cf_pair_index_bound_; ++i) {
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ControlFlowInstruction cf_ab[2];
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UnpackControlFlowInstructions(ucode_data_.data() + i * 3, cf_ab);
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for (uint32_t j = 0; j < 2; ++j) {
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uint32_t cf_index = i * 2 + j;
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if (label_addresses_.find(cf_index) != label_addresses_.end()) {
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ucode_disasm_buffer.AppendFormat(" label L{}\n",
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cf_index);
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}
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ucode_disasm_buffer.AppendFormat("/* {:4d}.{} */ ", i, j);
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const ControlFlowInstruction& cf = cf_ab[j];
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uint32_t bool_constant_index = UINT32_MAX;
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switch (cf.opcode()) {
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case ControlFlowOpcode::kNop:
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ucode_disasm_buffer.Append(" cnop\n");
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break;
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case ControlFlowOpcode::kExec:
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case ControlFlowOpcode::kExecEnd: {
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ParsedExecInstruction instr;
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ParseControlFlowExec(cf.exec, cf_index, instr);
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GatherExecInformation(instr, previous_vfetch_full,
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unique_texture_bindings, memexport_alloc_count,
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memexport_eA_written, ucode_disasm_buffer);
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} break;
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case ControlFlowOpcode::kCondExec:
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case ControlFlowOpcode::kCondExecEnd:
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case ControlFlowOpcode::kCondExecPredClean:
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case ControlFlowOpcode::kCondExecPredCleanEnd: {
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bool_constant_index = cf.cond_exec.bool_address();
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ParsedExecInstruction instr;
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ParseControlFlowCondExec(cf.cond_exec, cf_index, instr);
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GatherExecInformation(instr, previous_vfetch_full,
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unique_texture_bindings, memexport_alloc_count,
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memexport_eA_written, ucode_disasm_buffer);
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} break;
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case ControlFlowOpcode::kCondExecPred:
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case ControlFlowOpcode::kCondExecPredEnd: {
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ParsedExecInstruction instr;
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ParseControlFlowCondExecPred(cf.cond_exec_pred, cf_index, instr);
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GatherExecInformation(instr, previous_vfetch_full,
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unique_texture_bindings, memexport_alloc_count,
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memexport_eA_written, ucode_disasm_buffer);
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} break;
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case ControlFlowOpcode::kLoopStart: {
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ParsedLoopStartInstruction instr;
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ParseControlFlowLoopStart(cf.loop_start, cf_index, instr);
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instr.Disassemble(&ucode_disasm_buffer);
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constant_register_map_.loop_bitmap |= uint32_t(1)
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<< instr.loop_constant_index;
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} break;
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case ControlFlowOpcode::kLoopEnd: {
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ParsedLoopEndInstruction instr;
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ParseControlFlowLoopEnd(cf.loop_end, cf_index, instr);
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instr.Disassemble(&ucode_disasm_buffer);
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constant_register_map_.loop_bitmap |= uint32_t(1)
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<< instr.loop_constant_index;
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} break;
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case ControlFlowOpcode::kCondCall: {
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ParsedCallInstruction instr;
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ParseControlFlowCondCall(cf.cond_call, cf_index, instr);
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instr.Disassemble(&ucode_disasm_buffer);
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if (instr.type == ParsedCallInstruction::Type::kConditional) {
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bool_constant_index = instr.bool_constant_index;
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}
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} break;
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case ControlFlowOpcode::kReturn: {
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ParsedReturnInstruction instr;
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ParseControlFlowReturn(cf.ret, cf_index, instr);
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instr.Disassemble(&ucode_disasm_buffer);
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} break;
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case ControlFlowOpcode::kCondJmp: {
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ParsedJumpInstruction instr;
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ParseControlFlowCondJmp(cf.cond_jmp, cf_index, instr);
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instr.Disassemble(&ucode_disasm_buffer);
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if (instr.type == ParsedJumpInstruction::Type::kConditional) {
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bool_constant_index = instr.bool_constant_index;
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}
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} break;
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case ControlFlowOpcode::kAlloc: {
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ParsedAllocInstruction instr;
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ParseControlFlowAlloc(cf.alloc, cf_index,
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type() == xenos::ShaderType::kVertex, instr);
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instr.Disassemble(&ucode_disasm_buffer);
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if (instr.type == AllocType::kMemory) {
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++memexport_alloc_count;
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}
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} break;
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case ControlFlowOpcode::kMarkVsFetchDone:
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break;
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default:
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assert_unhandled_case(cf.opcode);
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break;
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}
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if (bool_constant_index != UINT32_MAX) {
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constant_register_map_.bool_bitmap[bool_constant_index / 32] |=
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uint32_t(1) << (bool_constant_index % 32);
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}
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// TODO(benvanik): break if (DoesControlFlowOpcodeEndShader(cf.opcode()))?
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}
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}
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ucode_disassembly_ = ucode_disasm_buffer.to_string();
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if (constant_register_map_.float_dynamic_addressing) {
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// All potentially can be referenced.
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constant_register_map_.float_count = 256;
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memset(constant_register_map_.float_bitmap, UINT8_MAX,
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sizeof(constant_register_map_.float_bitmap));
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} else {
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constant_register_map_.float_count = 0;
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for (int i = 0; i < 4; ++i) {
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// Each bit indicates a vec4 (4 floats).
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constant_register_map_.float_count +=
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xe::bit_count(constant_register_map_.float_bitmap[i]);
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}
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}
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// Cleanup invalid/unneeded memexport allocs.
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for (uint32_t i = 0; i < kMaxMemExports; ++i) {
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if (!(memexport_eA_written & (uint32_t(1) << i))) {
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memexport_eM_written_[i] = 0;
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} else if (!memexport_eM_written_[i]) {
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memexport_eA_written &= ~(uint32_t(1) << i);
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}
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}
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if (memexport_eA_written == 0) {
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memexport_stream_constants_.clear();
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}
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is_ucode_analyzed_ = true;
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// An empty shader can be created internally by shader translators as a dummy,
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// don't dump it.
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if (!cvars::dump_shaders.empty() && !ucode_data().empty()) {
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DumpUcode(cvars::dump_shaders);
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}
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}
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void Shader::GatherExecInformation(
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const ParsedExecInstruction& instr,
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ucode::VertexFetchInstruction& previous_vfetch_full,
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uint32_t& unique_texture_bindings, uint32_t memexport_alloc_current_count,
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uint32_t& memexport_eA_written, StringBuffer& ucode_disasm_buffer) {
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instr.Disassemble(&ucode_disasm_buffer);
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uint32_t sequence = instr.sequence;
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for (uint32_t instr_offset = instr.instruction_address;
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instr_offset < instr.instruction_address + instr.instruction_count;
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++instr_offset, sequence >>= 2) {
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ucode_disasm_buffer.AppendFormat("/* {:4d} */ ", instr_offset);
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if (sequence & 0b10) {
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ucode_disasm_buffer.Append(" serialize\n ");
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}
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const uint32_t* op_ptr = ucode_data_.data() + instr_offset * 3;
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if (sequence & 0b01) {
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auto& op = *reinterpret_cast<const FetchInstruction*>(op_ptr);
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if (op.opcode() == FetchOpcode::kVertexFetch) {
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GatherVertexFetchInformation(op.vertex_fetch(), previous_vfetch_full,
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ucode_disasm_buffer);
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} else {
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GatherTextureFetchInformation(
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op.texture_fetch(), unique_texture_bindings, ucode_disasm_buffer);
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}
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} else {
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auto& op = *reinterpret_cast<const AluInstruction*>(op_ptr);
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GatherAluInstructionInformation(op, memexport_alloc_current_count,
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memexport_eA_written,
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ucode_disasm_buffer);
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}
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}
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}
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void Shader::GatherVertexFetchInformation(
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const VertexFetchInstruction& op,
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VertexFetchInstruction& previous_vfetch_full,
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StringBuffer& ucode_disasm_buffer) {
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ParsedVertexFetchInstruction fetch_instr;
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if (ParseVertexFetchInstruction(op, previous_vfetch_full, fetch_instr)) {
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previous_vfetch_full = op;
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}
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fetch_instr.Disassemble(&ucode_disasm_buffer);
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GatherFetchResultInformation(fetch_instr.result);
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// Mini-fetches inherit the operands from full fetches.
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if (!fetch_instr.is_mini_fetch) {
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for (size_t i = 0; i < fetch_instr.operand_count; ++i) {
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GatherOperandInformation(fetch_instr.operands[i]);
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}
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}
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// Don't bother setting up a binding for an instruction that fetches nothing.
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// In case of vfetch_full, however, it may still be used to set up addressing
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// for the subsequent vfetch_mini, so operand information must still be
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// gathered.
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if (!fetch_instr.result.GetUsedResultComponents()) {
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return;
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}
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// Try to allocate an attribute on an existing binding.
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// If no binding for this fetch slot is found create it.
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using VertexBinding = Shader::VertexBinding;
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VertexBinding::Attribute* attrib = nullptr;
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for (auto& vertex_binding : vertex_bindings_) {
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if (vertex_binding.fetch_constant == op.fetch_constant_index()) {
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// It may not hold that all strides are equal, but I hope it does.
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assert_true(!fetch_instr.attributes.stride ||
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vertex_binding.stride_words == fetch_instr.attributes.stride);
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vertex_binding.attributes.push_back({});
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attrib = &vertex_binding.attributes.back();
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break;
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}
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}
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if (!attrib) {
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assert_not_zero(fetch_instr.attributes.stride);
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VertexBinding vertex_binding;
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vertex_binding.binding_index = int(vertex_bindings_.size());
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vertex_binding.fetch_constant = op.fetch_constant_index();
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vertex_binding.stride_words = fetch_instr.attributes.stride;
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vertex_binding.attributes.push_back({});
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vertex_bindings_.emplace_back(std::move(vertex_binding));
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attrib = &vertex_bindings_.back().attributes.back();
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}
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// Populate attribute.
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attrib->fetch_instr = fetch_instr;
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}
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void Shader::GatherTextureFetchInformation(const TextureFetchInstruction& op,
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uint32_t& unique_texture_bindings,
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StringBuffer& ucode_disasm_buffer) {
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TextureBinding binding;
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ParseTextureFetchInstruction(op, binding.fetch_instr);
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binding.fetch_instr.Disassemble(&ucode_disasm_buffer);
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GatherFetchResultInformation(binding.fetch_instr.result);
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for (size_t i = 0; i < binding.fetch_instr.operand_count; ++i) {
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GatherOperandInformation(binding.fetch_instr.operands[i]);
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}
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switch (op.opcode()) {
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case FetchOpcode::kSetTextureLod:
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case FetchOpcode::kSetTextureGradientsHorz:
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case FetchOpcode::kSetTextureGradientsVert:
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// Doesn't use bindings.
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return;
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default:
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// Continue.
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break;
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}
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binding.binding_index = -1;
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binding.fetch_constant = binding.fetch_instr.operands[1].storage_index;
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// Check and see if this fetch constant was previously used...
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for (auto& tex_binding : texture_bindings_) {
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if (tex_binding.fetch_constant == binding.fetch_constant) {
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binding.binding_index = tex_binding.binding_index;
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break;
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}
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}
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if (binding.binding_index == -1) {
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// Assign a unique binding index.
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binding.binding_index = unique_texture_bindings++;
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}
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texture_bindings_.emplace_back(std::move(binding));
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}
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void Shader::GatherAluInstructionInformation(
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const AluInstruction& op, uint32_t memexport_alloc_current_count,
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uint32_t& memexport_eA_written, StringBuffer& ucode_disasm_buffer) {
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ParsedAluInstruction instr;
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ParseAluInstruction(op, type(), instr);
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instr.Disassemble(&ucode_disasm_buffer);
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kills_pixels_ =
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kills_pixels_ ||
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(ucode::GetAluVectorOpcodeInfo(op.vector_opcode()).changed_state &
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ucode::kAluOpChangedStatePixelKill) ||
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(ucode::GetAluScalarOpcodeInfo(op.scalar_opcode()).changed_state &
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ucode::kAluOpChangedStatePixelKill);
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GatherAluResultInformation(instr.vector_and_constant_result,
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memexport_alloc_current_count);
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GatherAluResultInformation(instr.scalar_result,
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memexport_alloc_current_count);
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for (size_t i = 0; i < instr.vector_operand_count; ++i) {
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GatherOperandInformation(instr.vector_operands[i]);
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}
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for (size_t i = 0; i < instr.scalar_operand_count; ++i) {
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GatherOperandInformation(instr.scalar_operands[i]);
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}
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// Store used memexport constants because CPU code needs addresses and sizes,
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// and also whether there have been writes to eA and eM# for register
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// allocation in shader translator implementations.
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// eA is (hopefully) always written to using:
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// mad eA, r#, const0100, c#
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// (though there are some exceptions, shaders in 4D5307E6 for some reason set
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// eA to zeros, but the swizzle of the constant is not .xyzw in this case, and
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// they don't write to eM#).
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// Export is done to vector_dest of the ucode instruction for both vector and
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// scalar operations - no need to check separately.
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if (instr.vector_and_constant_result.storage_target ==
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InstructionStorageTarget::kExportAddress &&
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memexport_alloc_current_count > 0 &&
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memexport_alloc_current_count <= Shader::kMaxMemExports) {
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uint32_t memexport_stream_constant = instr.GetMemExportStreamConstant();
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if (memexport_stream_constant != UINT32_MAX) {
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memexport_eA_written |= uint32_t(1)
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<< (memexport_alloc_current_count - 1);
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memexport_stream_constants_.insert(memexport_stream_constant);
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} else {
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XELOGE(
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"ShaderTranslator::GatherAluInstructionInformation: Couldn't extract "
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"memexport stream constant index");
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}
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}
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}
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void Shader::GatherOperandInformation(const InstructionOperand& operand) {
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switch (operand.storage_source) {
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case InstructionStorageSource::kRegister:
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if (operand.storage_addressing_mode ==
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InstructionStorageAddressingMode::kAbsolute) {
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register_static_address_bound_ =
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std::max(register_static_address_bound_,
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operand.storage_index + uint32_t(1));
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} else {
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uses_register_dynamic_addressing_ = true;
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}
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break;
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case InstructionStorageSource::kConstantFloat:
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if (operand.storage_addressing_mode ==
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InstructionStorageAddressingMode::kAbsolute) {
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// Store used float constants before translating so the
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// translator can use tightly packed indices if not dynamically
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// indexed.
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constant_register_map_.float_bitmap[operand.storage_index >> 6] |=
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uint64_t(1) << (operand.storage_index & 63);
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} else {
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constant_register_map_.float_dynamic_addressing = true;
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}
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break;
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case InstructionStorageSource::kVertexFetchConstant:
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constant_register_map_.vertex_fetch_bitmap[operand.storage_index >> 5] |=
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uint32_t(1) << (operand.storage_index & 31);
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break;
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default:
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break;
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}
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}
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void Shader::GatherFetchResultInformation(const InstructionResult& result) {
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|
if (!result.GetUsedWriteMask()) {
|
|
return;
|
|
}
|
|
// Fetch instructions can't export - don't need the current memexport count
|
|
// operand.
|
|
assert_true(result.storage_target == InstructionStorageTarget::kRegister);
|
|
if (result.storage_addressing_mode ==
|
|
InstructionStorageAddressingMode::kAbsolute) {
|
|
register_static_address_bound_ = std::max(
|
|
register_static_address_bound_, result.storage_index + uint32_t(1));
|
|
} else {
|
|
uses_register_dynamic_addressing_ = true;
|
|
}
|
|
}
|
|
|
|
void Shader::GatherAluResultInformation(
|
|
const InstructionResult& result, uint32_t memexport_alloc_current_count) {
|
|
if (!result.GetUsedWriteMask()) {
|
|
return;
|
|
}
|
|
switch (result.storage_target) {
|
|
case InstructionStorageTarget::kRegister:
|
|
if (result.storage_addressing_mode ==
|
|
InstructionStorageAddressingMode::kAbsolute) {
|
|
register_static_address_bound_ = std::max(
|
|
register_static_address_bound_, result.storage_index + uint32_t(1));
|
|
} else {
|
|
uses_register_dynamic_addressing_ = true;
|
|
}
|
|
break;
|
|
case InstructionStorageTarget::kExportData:
|
|
if (memexport_alloc_current_count > 0 &&
|
|
memexport_alloc_current_count <= Shader::kMaxMemExports) {
|
|
memexport_eM_written_[memexport_alloc_current_count - 1] |=
|
|
uint32_t(1) << result.storage_index;
|
|
}
|
|
break;
|
|
case InstructionStorageTarget::kColor:
|
|
writes_color_targets_ |= uint32_t(1) << result.storage_index;
|
|
break;
|
|
case InstructionStorageTarget::kDepth:
|
|
writes_depth_ = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
ShaderTranslator::ShaderTranslator() = default;
|
|
|
|
ShaderTranslator::~ShaderTranslator() = default;
|
|
|
|
void ShaderTranslator::Reset() {
|
|
errors_.clear();
|
|
std::memset(&previous_vfetch_full_, 0, sizeof(previous_vfetch_full_));
|
|
}
|
|
|
|
bool ShaderTranslator::TranslateAnalyzedShader(
|
|
Shader::Translation& translation) {
|
|
const Shader& shader = translation.shader();
|
|
assert_true(shader.is_ucode_analyzed());
|
|
if (!shader.is_ucode_analyzed()) {
|
|
XELOGE("AnalyzeUcode must be done on the shader before translation");
|
|
return false;
|
|
}
|
|
translation_ = &translation;
|
|
|
|
Reset();
|
|
|
|
register_count_ = shader.register_static_address_bound();
|
|
if (shader.uses_register_dynamic_addressing()) {
|
|
// An array of registers at the end of the r# space may be dynamically
|
|
// addressable - ensure enough space, as specified in SQ_PROGRAM_CNTL, is
|
|
// allocated.
|
|
register_count_ = std::max(register_count_, GetModificationRegisterCount());
|
|
}
|
|
|
|
StartTranslation();
|
|
|
|
const uint32_t* ucode_dwords = shader.ucode_data().data();
|
|
|
|
// TODO(Triang3l): Remove when the old SPIR-V shader translator is deleted.
|
|
uint32_t cf_pair_index_bound = shader.cf_pair_index_bound();
|
|
std::vector<ControlFlowInstruction> cf_instructions;
|
|
for (uint32_t i = 0; i < cf_pair_index_bound; ++i) {
|
|
ControlFlowInstruction cf_ab[2];
|
|
UnpackControlFlowInstructions(ucode_dwords + i * 3, cf_ab);
|
|
cf_instructions.push_back(cf_ab[0]);
|
|
cf_instructions.push_back(cf_ab[1]);
|
|
}
|
|
PreProcessControlFlowInstructions(cf_instructions);
|
|
|
|
// Translate all instructions.
|
|
const std::set<uint32_t>& label_addresses = shader.label_addresses();
|
|
for (uint32_t i = 0; i < cf_pair_index_bound; ++i) {
|
|
ControlFlowInstruction cf_ab[2];
|
|
UnpackControlFlowInstructions(ucode_dwords + i * 3, cf_ab);
|
|
for (uint32_t j = 0; j < 2; ++j) {
|
|
uint32_t cf_index = i * 2 + j;
|
|
cf_index_ = cf_index;
|
|
if (label_addresses.find(cf_index) != label_addresses.end()) {
|
|
ProcessLabel(cf_index);
|
|
}
|
|
ProcessControlFlowInstructionBegin(cf_index);
|
|
TranslateControlFlowInstruction(cf_ab[j]);
|
|
ProcessControlFlowInstructionEnd(cf_index);
|
|
}
|
|
}
|
|
|
|
translation.errors_ = std::move(errors_);
|
|
translation.translated_binary_ = CompleteTranslation();
|
|
translation.is_translated_ = true;
|
|
|
|
bool is_valid = true;
|
|
for (const auto& error : translation.errors_) {
|
|
if (error.is_fatal) {
|
|
is_valid = false;
|
|
break;
|
|
}
|
|
}
|
|
translation.is_valid_ = is_valid;
|
|
|
|
PostTranslation();
|
|
|
|
// In case is_valid_ is modified by PostTranslation, reload.
|
|
return translation.is_valid_;
|
|
}
|
|
|
|
void ShaderTranslator::EmitTranslationError(const char* message,
|
|
bool is_fatal) {
|
|
Shader::Error error;
|
|
error.is_fatal = is_fatal;
|
|
error.message = message;
|
|
// TODO(benvanik): location information.
|
|
errors_.push_back(std::move(error));
|
|
XELOGE("Shader translation {}error: {}", is_fatal ? "fatal " : "", message);
|
|
}
|
|
|
|
void ShaderTranslator::TranslateControlFlowInstruction(
|
|
const ControlFlowInstruction& cf) {
|
|
switch (cf.opcode()) {
|
|
case ControlFlowOpcode::kNop:
|
|
ProcessControlFlowNopInstruction(cf_index_);
|
|
break;
|
|
case ControlFlowOpcode::kExec:
|
|
case ControlFlowOpcode::kExecEnd: {
|
|
ParsedExecInstruction instr;
|
|
ParseControlFlowExec(cf.exec, cf_index_, instr);
|
|
TranslateExecInstructions(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kCondExec:
|
|
case ControlFlowOpcode::kCondExecEnd:
|
|
case ControlFlowOpcode::kCondExecPredClean:
|
|
case ControlFlowOpcode::kCondExecPredCleanEnd: {
|
|
ParsedExecInstruction instr;
|
|
ParseControlFlowCondExec(cf.cond_exec, cf_index_, instr);
|
|
TranslateExecInstructions(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kCondExecPred:
|
|
case ControlFlowOpcode::kCondExecPredEnd: {
|
|
ParsedExecInstruction instr;
|
|
ParseControlFlowCondExecPred(cf.cond_exec_pred, cf_index_, instr);
|
|
TranslateExecInstructions(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kLoopStart: {
|
|
ParsedLoopStartInstruction instr;
|
|
ParseControlFlowLoopStart(cf.loop_start, cf_index_, instr);
|
|
ProcessLoopStartInstruction(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kLoopEnd: {
|
|
ParsedLoopEndInstruction instr;
|
|
ParseControlFlowLoopEnd(cf.loop_end, cf_index_, instr);
|
|
ProcessLoopEndInstruction(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kCondCall: {
|
|
ParsedCallInstruction instr;
|
|
ParseControlFlowCondCall(cf.cond_call, cf_index_, instr);
|
|
ProcessCallInstruction(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kReturn: {
|
|
ParsedReturnInstruction instr;
|
|
ParseControlFlowReturn(cf.ret, cf_index_, instr);
|
|
ProcessReturnInstruction(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kCondJmp: {
|
|
ParsedJumpInstruction instr;
|
|
ParseControlFlowCondJmp(cf.cond_jmp, cf_index_, instr);
|
|
ProcessJumpInstruction(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kAlloc: {
|
|
ParsedAllocInstruction instr;
|
|
ParseControlFlowAlloc(cf.alloc, cf_index_, is_vertex_shader(), instr);
|
|
ProcessAllocInstruction(instr);
|
|
} break;
|
|
case ControlFlowOpcode::kMarkVsFetchDone:
|
|
break;
|
|
default:
|
|
assert_unhandled_case(cf.opcode);
|
|
break;
|
|
}
|
|
// TODO(benvanik): return if (DoesControlFlowOpcodeEndShader(cf.opcode()))?
|
|
}
|
|
|
|
void ParseControlFlowExec(const ControlFlowExecInstruction& cf,
|
|
uint32_t cf_index, ParsedExecInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.opcode = cf.opcode();
|
|
instr.opcode_name =
|
|
cf.opcode() == ControlFlowOpcode::kExecEnd ? "exece" : "exec";
|
|
instr.instruction_address = cf.address();
|
|
instr.instruction_count = cf.count();
|
|
instr.type = ParsedExecInstruction::Type::kUnconditional;
|
|
instr.is_end = cf.opcode() == ControlFlowOpcode::kExecEnd;
|
|
instr.is_predicate_clean = cf.is_predicate_clean();
|
|
instr.is_yield = cf.is_yield();
|
|
instr.sequence = cf.sequence();
|
|
}
|
|
|
|
void ParseControlFlowCondExec(const ControlFlowCondExecInstruction& cf,
|
|
uint32_t cf_index, ParsedExecInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.opcode = cf.opcode();
|
|
instr.opcode_name = "cexec";
|
|
switch (cf.opcode()) {
|
|
case ControlFlowOpcode::kCondExecEnd:
|
|
case ControlFlowOpcode::kCondExecPredCleanEnd:
|
|
instr.opcode_name = "cexece";
|
|
instr.is_end = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
instr.instruction_address = cf.address();
|
|
instr.instruction_count = cf.count();
|
|
instr.type = ParsedExecInstruction::Type::kConditional;
|
|
instr.bool_constant_index = cf.bool_address();
|
|
instr.condition = cf.condition();
|
|
switch (cf.opcode()) {
|
|
case ControlFlowOpcode::kCondExec:
|
|
case ControlFlowOpcode::kCondExecEnd:
|
|
instr.is_predicate_clean = false;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
instr.is_yield = cf.is_yield();
|
|
instr.sequence = cf.sequence();
|
|
}
|
|
|
|
void ParseControlFlowCondExecPred(const ControlFlowCondExecPredInstruction& cf,
|
|
uint32_t cf_index,
|
|
ParsedExecInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.opcode = cf.opcode();
|
|
instr.opcode_name =
|
|
cf.opcode() == ControlFlowOpcode::kCondExecPredEnd ? "exece" : "exec";
|
|
instr.instruction_address = cf.address();
|
|
instr.instruction_count = cf.count();
|
|
instr.type = ParsedExecInstruction::Type::kPredicated;
|
|
instr.condition = cf.condition();
|
|
instr.is_end = cf.opcode() == ControlFlowOpcode::kCondExecPredEnd;
|
|
instr.is_predicate_clean = cf.is_predicate_clean();
|
|
instr.is_yield = cf.is_yield();
|
|
instr.sequence = cf.sequence();
|
|
}
|
|
|
|
void ParseControlFlowLoopStart(const ControlFlowLoopStartInstruction& cf,
|
|
uint32_t cf_index,
|
|
ParsedLoopStartInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.loop_constant_index = cf.loop_id();
|
|
instr.is_repeat = cf.is_repeat();
|
|
instr.loop_skip_address = cf.address();
|
|
}
|
|
|
|
void ParseControlFlowLoopEnd(const ControlFlowLoopEndInstruction& cf,
|
|
uint32_t cf_index,
|
|
ParsedLoopEndInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.is_predicated_break = cf.is_predicated_break();
|
|
instr.predicate_condition = cf.condition();
|
|
instr.loop_constant_index = cf.loop_id();
|
|
instr.loop_body_address = cf.address();
|
|
}
|
|
|
|
void ParseControlFlowCondCall(const ControlFlowCondCallInstruction& cf,
|
|
uint32_t cf_index, ParsedCallInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.target_address = cf.address();
|
|
if (cf.is_unconditional()) {
|
|
instr.type = ParsedCallInstruction::Type::kUnconditional;
|
|
} else if (cf.is_predicated()) {
|
|
instr.type = ParsedCallInstruction::Type::kPredicated;
|
|
instr.condition = cf.condition();
|
|
} else {
|
|
instr.type = ParsedCallInstruction::Type::kConditional;
|
|
instr.bool_constant_index = cf.bool_address();
|
|
instr.condition = cf.condition();
|
|
}
|
|
}
|
|
|
|
void ParseControlFlowReturn(const ControlFlowReturnInstruction& cf,
|
|
uint32_t cf_index, ParsedReturnInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
}
|
|
|
|
void ParseControlFlowCondJmp(const ControlFlowCondJmpInstruction& cf,
|
|
uint32_t cf_index, ParsedJumpInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.target_address = cf.address();
|
|
if (cf.is_unconditional()) {
|
|
instr.type = ParsedJumpInstruction::Type::kUnconditional;
|
|
} else if (cf.is_predicated()) {
|
|
instr.type = ParsedJumpInstruction::Type::kPredicated;
|
|
instr.condition = cf.condition();
|
|
} else {
|
|
instr.type = ParsedJumpInstruction::Type::kConditional;
|
|
instr.bool_constant_index = cf.bool_address();
|
|
instr.condition = cf.condition();
|
|
}
|
|
}
|
|
|
|
void ParseControlFlowAlloc(const ControlFlowAllocInstruction& cf,
|
|
uint32_t cf_index, bool is_vertex_shader,
|
|
ParsedAllocInstruction& instr) {
|
|
instr.dword_index = cf_index;
|
|
instr.type = cf.alloc_type();
|
|
instr.count = cf.size();
|
|
instr.is_vertex_shader = is_vertex_shader;
|
|
}
|
|
|
|
void ShaderTranslator::TranslateExecInstructions(
|
|
const ParsedExecInstruction& instr) {
|
|
ProcessExecInstructionBegin(instr);
|
|
const uint32_t* ucode_dwords = current_shader().ucode_data().data();
|
|
uint32_t sequence = instr.sequence;
|
|
for (uint32_t instr_offset = instr.instruction_address;
|
|
instr_offset < instr.instruction_address + instr.instruction_count;
|
|
++instr_offset, sequence >>= 2) {
|
|
const uint32_t* op_ptr = ucode_dwords + instr_offset * 3;
|
|
if (sequence & 0b01) {
|
|
auto& op = *reinterpret_cast<const FetchInstruction*>(op_ptr);
|
|
if (op.opcode() == FetchOpcode::kVertexFetch) {
|
|
const VertexFetchInstruction& vfetch_op = op.vertex_fetch();
|
|
ParsedVertexFetchInstruction vfetch_instr;
|
|
if (ParseVertexFetchInstruction(vfetch_op, previous_vfetch_full_,
|
|
vfetch_instr)) {
|
|
previous_vfetch_full_ = vfetch_op;
|
|
}
|
|
ProcessVertexFetchInstruction(vfetch_instr);
|
|
} else {
|
|
ParsedTextureFetchInstruction tfetch_instr;
|
|
ParseTextureFetchInstruction(op.texture_fetch(), tfetch_instr);
|
|
ProcessTextureFetchInstruction(tfetch_instr);
|
|
}
|
|
} else {
|
|
auto& op = *reinterpret_cast<const AluInstruction*>(op_ptr);
|
|
ParsedAluInstruction alu_instr;
|
|
ParseAluInstruction(op, current_shader().type(), alu_instr);
|
|
ProcessAluInstruction(alu_instr);
|
|
}
|
|
}
|
|
ProcessExecInstructionEnd(instr);
|
|
}
|
|
|
|
static void ParseFetchInstructionResult(uint32_t dest, uint32_t swizzle,
|
|
bool is_relative,
|
|
InstructionResult& result) {
|
|
result.storage_target = InstructionStorageTarget::kRegister;
|
|
result.storage_index = dest;
|
|
result.is_clamped = false;
|
|
result.storage_addressing_mode =
|
|
is_relative ? InstructionStorageAddressingMode::kLoopRelative
|
|
: InstructionStorageAddressingMode::kAbsolute;
|
|
result.original_write_mask = 0b1111;
|
|
for (int i = 0; i < 4; ++i) {
|
|
SwizzleSource component_source = SwizzleSource::k0;
|
|
ucode::FetchDestinationSwizzle component_swizzle =
|
|
ucode::GetFetchDestinationComponentSwizzle(swizzle, i);
|
|
switch (component_swizzle) {
|
|
case ucode::FetchDestinationSwizzle::kX:
|
|
component_source = SwizzleSource::kX;
|
|
break;
|
|
case ucode::FetchDestinationSwizzle::kY:
|
|
component_source = SwizzleSource::kY;
|
|
break;
|
|
case ucode::FetchDestinationSwizzle::kZ:
|
|
component_source = SwizzleSource::kZ;
|
|
break;
|
|
case ucode::FetchDestinationSwizzle::kW:
|
|
component_source = SwizzleSource::kW;
|
|
break;
|
|
case ucode::FetchDestinationSwizzle::k1:
|
|
component_source = SwizzleSource::k1;
|
|
break;
|
|
case ucode::FetchDestinationSwizzle::kKeep:
|
|
result.original_write_mask &= ~(UINT32_C(1) << i);
|
|
break;
|
|
default:
|
|
// ucode::FetchDestinationSwizzle::k0 or the invalid swizzle 6.
|
|
// TODO(Triang3l): Find the correct handling of the invalid swizzle 6.
|
|
assert_true(component_swizzle == ucode::FetchDestinationSwizzle::k0);
|
|
component_source = SwizzleSource::k0;
|
|
break;
|
|
}
|
|
result.components[i] = component_source;
|
|
}
|
|
}
|
|
|
|
bool ParseVertexFetchInstruction(const VertexFetchInstruction& op,
|
|
const VertexFetchInstruction& previous_full_op,
|
|
ParsedVertexFetchInstruction& instr) {
|
|
instr.opcode = FetchOpcode::kVertexFetch;
|
|
instr.opcode_name = op.is_mini_fetch() ? "vfetch_mini" : "vfetch_full";
|
|
instr.is_mini_fetch = op.is_mini_fetch();
|
|
instr.is_predicated = op.is_predicated();
|
|
instr.predicate_condition = op.predicate_condition();
|
|
|
|
ParseFetchInstructionResult(op.dest(), op.dest_swizzle(),
|
|
op.is_dest_relative(), instr.result);
|
|
|
|
// Reuse previous vfetch_full if this is a mini.
|
|
const auto& full_op = op.is_mini_fetch() ? previous_full_op : op;
|
|
auto& src_op = instr.operands[instr.operand_count++];
|
|
src_op.storage_source = InstructionStorageSource::kRegister;
|
|
src_op.storage_index = full_op.src();
|
|
src_op.storage_addressing_mode =
|
|
full_op.is_src_relative()
|
|
? InstructionStorageAddressingMode::kLoopRelative
|
|
: InstructionStorageAddressingMode::kAbsolute;
|
|
src_op.is_negated = false;
|
|
src_op.is_absolute_value = false;
|
|
src_op.component_count = 1;
|
|
uint32_t swizzle = full_op.src_swizzle();
|
|
for (uint32_t j = 0; j < src_op.component_count; ++j, swizzle >>= 2) {
|
|
src_op.components[j] = GetSwizzleFromComponentIndex(swizzle & 0x3);
|
|
}
|
|
|
|
auto& const_op = instr.operands[instr.operand_count++];
|
|
const_op.storage_source = InstructionStorageSource::kVertexFetchConstant;
|
|
const_op.storage_index = full_op.fetch_constant_index();
|
|
|
|
instr.attributes.data_format = op.data_format();
|
|
instr.attributes.offset = op.offset();
|
|
instr.attributes.stride = full_op.stride();
|
|
instr.attributes.exp_adjust = op.exp_adjust();
|
|
instr.attributes.prefetch_count = op.prefetch_count();
|
|
instr.attributes.is_index_rounded = full_op.is_index_rounded();
|
|
instr.attributes.is_signed = op.is_signed();
|
|
instr.attributes.is_integer = !op.is_normalized();
|
|
instr.attributes.signed_rf_mode = op.signed_rf_mode();
|
|
|
|
return !op.is_mini_fetch();
|
|
}
|
|
|
|
void ParseTextureFetchInstruction(const TextureFetchInstruction& op,
|
|
ParsedTextureFetchInstruction& instr) {
|
|
struct TextureFetchOpcodeInfo {
|
|
const char* name;
|
|
bool has_dest;
|
|
bool has_const;
|
|
bool has_attributes;
|
|
uint32_t override_component_count;
|
|
} opcode_info;
|
|
switch (op.opcode()) {
|
|
case FetchOpcode::kTextureFetch: {
|
|
static const char* kNames[] = {"tfetch1D", "tfetch2D", "tfetch3D",
|
|
"tfetchCube"};
|
|
opcode_info = {kNames[static_cast<int>(op.dimension())], true, true, true,
|
|
0};
|
|
} break;
|
|
case FetchOpcode::kGetTextureBorderColorFrac: {
|
|
static const char* kNames[] = {"getBCF1D", "getBCF2D", "getBCF3D",
|
|
"getBCFCube"};
|
|
opcode_info = {kNames[static_cast<int>(op.dimension())], true, true, true,
|
|
0};
|
|
} break;
|
|
case FetchOpcode::kGetTextureComputedLod: {
|
|
static const char* kNames[] = {"getCompTexLOD1D", "getCompTexLOD2D",
|
|
"getCompTexLOD3D", "getCompTexLODCube"};
|
|
opcode_info = {kNames[static_cast<int>(op.dimension())], true, true, true,
|
|
0};
|
|
} break;
|
|
case FetchOpcode::kGetTextureGradients:
|
|
opcode_info = {"getGradients", true, true, true, 2};
|
|
break;
|
|
case FetchOpcode::kGetTextureWeights: {
|
|
static const char* kNames[] = {"getWeights1D", "getWeights2D",
|
|
"getWeights3D", "getWeightsCube"};
|
|
opcode_info = {kNames[static_cast<int>(op.dimension())], true, true, true,
|
|
0};
|
|
} break;
|
|
case FetchOpcode::kSetTextureLod:
|
|
opcode_info = {"setTexLOD", false, false, false, 1};
|
|
break;
|
|
case FetchOpcode::kSetTextureGradientsHorz:
|
|
opcode_info = {"setGradientH", false, false, false, 3};
|
|
break;
|
|
case FetchOpcode::kSetTextureGradientsVert:
|
|
opcode_info = {"setGradientV", false, false, false, 3};
|
|
break;
|
|
default:
|
|
assert_unhandled_case(fetch_opcode);
|
|
return;
|
|
}
|
|
|
|
instr.opcode = op.opcode();
|
|
instr.opcode_name = opcode_info.name;
|
|
instr.dimension = op.dimension();
|
|
instr.is_predicated = op.is_predicated();
|
|
instr.predicate_condition = op.predicate_condition();
|
|
|
|
if (opcode_info.has_dest) {
|
|
ParseFetchInstructionResult(op.dest(), op.dest_swizzle(),
|
|
op.is_dest_relative(), instr.result);
|
|
} else {
|
|
instr.result.storage_target = InstructionStorageTarget::kNone;
|
|
}
|
|
|
|
auto& src_op = instr.operands[instr.operand_count++];
|
|
src_op.storage_source = InstructionStorageSource::kRegister;
|
|
src_op.storage_index = op.src();
|
|
src_op.storage_addressing_mode =
|
|
op.is_src_relative() ? InstructionStorageAddressingMode::kLoopRelative
|
|
: InstructionStorageAddressingMode::kAbsolute;
|
|
src_op.is_negated = false;
|
|
src_op.is_absolute_value = false;
|
|
src_op.component_count =
|
|
opcode_info.override_component_count
|
|
? opcode_info.override_component_count
|
|
: xenos::GetFetchOpDimensionComponentCount(op.dimension());
|
|
uint32_t swizzle = op.src_swizzle();
|
|
for (uint32_t j = 0; j < src_op.component_count; ++j, swizzle >>= 2) {
|
|
src_op.components[j] = GetSwizzleFromComponentIndex(swizzle & 0x3);
|
|
}
|
|
|
|
if (opcode_info.has_const) {
|
|
auto& const_op = instr.operands[instr.operand_count++];
|
|
const_op.storage_source = InstructionStorageSource::kTextureFetchConstant;
|
|
const_op.storage_index = op.fetch_constant_index();
|
|
}
|
|
|
|
if (opcode_info.has_attributes) {
|
|
instr.attributes.fetch_valid_only = op.fetch_valid_only();
|
|
instr.attributes.unnormalized_coordinates = op.unnormalized_coordinates();
|
|
instr.attributes.mag_filter = op.mag_filter();
|
|
instr.attributes.min_filter = op.min_filter();
|
|
instr.attributes.mip_filter = op.mip_filter();
|
|
instr.attributes.aniso_filter = op.aniso_filter();
|
|
instr.attributes.vol_mag_filter = op.vol_mag_filter();
|
|
instr.attributes.vol_min_filter = op.vol_min_filter();
|
|
instr.attributes.use_computed_lod = op.use_computed_lod();
|
|
instr.attributes.use_register_lod = op.use_register_lod();
|
|
instr.attributes.use_register_gradients = op.use_register_gradients();
|
|
instr.attributes.lod_bias = op.lod_bias();
|
|
instr.attributes.offset_x = op.offset_x();
|
|
instr.attributes.offset_y = op.offset_y();
|
|
instr.attributes.offset_z = op.offset_z();
|
|
}
|
|
}
|
|
|
|
uint32_t ParsedTextureFetchInstruction::GetNonZeroResultComponents() const {
|
|
uint32_t components = 0b0000;
|
|
switch (opcode) {
|
|
case FetchOpcode::kTextureFetch:
|
|
case FetchOpcode::kGetTextureGradients:
|
|
components = 0b1111;
|
|
break;
|
|
case FetchOpcode::kGetTextureBorderColorFrac:
|
|
components = 0b0001;
|
|
break;
|
|
case FetchOpcode::kGetTextureComputedLod:
|
|
// Not checking if the MipFilter is basemap because XNA doesn't accept
|
|
// MipFilter for getCompTexLOD.
|
|
components = 0b0001;
|
|
break;
|
|
case FetchOpcode::kGetTextureWeights:
|
|
// FIXME(Triang3l): Not caring about mag/min filters currently for
|
|
// simplicity. It's very unlikely that this instruction is ever seriously
|
|
// used to retrieve weights of zero though.
|
|
switch (dimension) {
|
|
case xenos::FetchOpDimension::k1D:
|
|
components = 0b1001;
|
|
break;
|
|
case xenos::FetchOpDimension::k2D:
|
|
case xenos::FetchOpDimension::kCube:
|
|
// TODO(Triang3l): Is the depth lerp factor always 0 for cube maps?
|
|
components = 0b1011;
|
|
break;
|
|
case xenos::FetchOpDimension::k3DOrStacked:
|
|
components = 0b1111;
|
|
break;
|
|
}
|
|
if (attributes.mip_filter == xenos::TextureFilter::kBaseMap ||
|
|
attributes.mip_filter == xenos::TextureFilter::kPoint) {
|
|
components &= ~uint32_t(0b1000);
|
|
}
|
|
break;
|
|
case FetchOpcode::kSetTextureLod:
|
|
case FetchOpcode::kSetTextureGradientsHorz:
|
|
case FetchOpcode::kSetTextureGradientsVert:
|
|
components = 0b0000;
|
|
break;
|
|
default:
|
|
assert_unhandled_case(opcode);
|
|
}
|
|
return result.GetUsedResultComponents() & components;
|
|
}
|
|
|
|
static void ParseAluInstructionOperand(const AluInstruction& op, uint32_t i,
|
|
uint32_t swizzle_component_count,
|
|
InstructionOperand& out_op) {
|
|
out_op.is_negated = op.src_negate(i);
|
|
uint32_t reg = op.src_reg(i);
|
|
if (op.src_is_temp(i)) {
|
|
out_op.storage_source = InstructionStorageSource::kRegister;
|
|
out_op.storage_index = AluInstruction::src_temp_reg(reg);
|
|
out_op.is_absolute_value = AluInstruction::is_src_temp_value_absolute(reg);
|
|
out_op.storage_addressing_mode =
|
|
AluInstruction::is_src_temp_relative(reg)
|
|
? InstructionStorageAddressingMode::kLoopRelative
|
|
: InstructionStorageAddressingMode::kAbsolute;
|
|
} else {
|
|
out_op.storage_source = InstructionStorageSource::kConstantFloat;
|
|
out_op.storage_index = reg;
|
|
if (op.src_const_is_addressed(i)) {
|
|
if (op.is_const_address_register_relative()) {
|
|
out_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAddressRegisterRelative;
|
|
} else {
|
|
out_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kLoopRelative;
|
|
}
|
|
} else {
|
|
out_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAbsolute;
|
|
}
|
|
out_op.is_absolute_value = op.abs_constants();
|
|
}
|
|
out_op.component_count = swizzle_component_count;
|
|
uint32_t swizzle = op.src_swizzle(i);
|
|
if (swizzle_component_count == 1) {
|
|
// Scalar `a` (W).
|
|
out_op.components[0] = GetSwizzledAluSourceComponent(swizzle, 3);
|
|
} else if (swizzle_component_count == 2) {
|
|
// Scalar left-hand `a` (W) and right-hand `b` (X).
|
|
out_op.components[0] = GetSwizzledAluSourceComponent(swizzle, 3);
|
|
out_op.components[1] = GetSwizzledAluSourceComponent(swizzle, 0);
|
|
} else if (swizzle_component_count == 3) {
|
|
assert_always();
|
|
} else if (swizzle_component_count == 4) {
|
|
for (uint32_t j = 0; j < swizzle_component_count; ++j) {
|
|
out_op.components[j] = GetSwizzledAluSourceComponent(swizzle, j);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ParsedAluInstruction::IsVectorOpDefaultNop() const {
|
|
if (vector_opcode != ucode::AluVectorOpcode::kMax ||
|
|
vector_and_constant_result.original_write_mask ||
|
|
vector_and_constant_result.is_clamped ||
|
|
vector_operands[0].storage_source !=
|
|
InstructionStorageSource::kRegister ||
|
|
vector_operands[0].storage_index != 0 ||
|
|
vector_operands[0].storage_addressing_mode !=
|
|
InstructionStorageAddressingMode::kAbsolute ||
|
|
vector_operands[0].is_negated || vector_operands[0].is_absolute_value ||
|
|
!vector_operands[0].IsStandardSwizzle() ||
|
|
vector_operands[1].storage_source !=
|
|
InstructionStorageSource::kRegister ||
|
|
vector_operands[1].storage_index != 0 ||
|
|
vector_operands[1].storage_addressing_mode !=
|
|
InstructionStorageAddressingMode::kAbsolute ||
|
|
vector_operands[1].is_negated || vector_operands[1].is_absolute_value ||
|
|
!vector_operands[1].IsStandardSwizzle()) {
|
|
return false;
|
|
}
|
|
if (vector_and_constant_result.storage_target ==
|
|
InstructionStorageTarget::kRegister) {
|
|
if (vector_and_constant_result.storage_index != 0 ||
|
|
vector_and_constant_result.storage_addressing_mode !=
|
|
InstructionStorageAddressingMode::kAbsolute) {
|
|
return false;
|
|
}
|
|
} else {
|
|
// In case both vector and scalar operations are nop, still need to write
|
|
// somewhere that it's an export, not mov r0._, r0 + retain_prev r0._.
|
|
// Accurate round trip is possible only if the target is o0 or oC0, because
|
|
// if the total write mask is empty, the XNA assembler forces the
|
|
// destination to be o0/oC0, but this doesn't really matter in this case.
|
|
if (IsScalarOpDefaultNop()) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void ParseAluInstruction(const AluInstruction& op,
|
|
xenos::ShaderType shader_type,
|
|
ParsedAluInstruction& instr) {
|
|
instr.is_predicated = op.is_predicated();
|
|
instr.predicate_condition = op.predicate_condition();
|
|
|
|
bool is_export = op.is_export();
|
|
|
|
InstructionStorageTarget storage_target = InstructionStorageTarget::kRegister;
|
|
uint32_t storage_index_export = 0;
|
|
if (is_export) {
|
|
storage_target = InstructionStorageTarget::kNone;
|
|
// Both vector and scalar operation export to vector_dest.
|
|
ExportRegister export_register = ExportRegister(op.vector_dest());
|
|
if (export_register == ExportRegister::kExportAddress) {
|
|
storage_target = InstructionStorageTarget::kExportAddress;
|
|
} else if (export_register >= ExportRegister::kExportData0 &&
|
|
export_register <= ExportRegister::kExportData4) {
|
|
storage_target = InstructionStorageTarget::kExportData;
|
|
storage_index_export =
|
|
uint32_t(export_register) - uint32_t(ExportRegister::kExportData0);
|
|
} else if (shader_type == xenos::ShaderType::kVertex) {
|
|
if (export_register >= ExportRegister::kVSInterpolator0 &&
|
|
export_register <= ExportRegister::kVSInterpolator15) {
|
|
storage_target = InstructionStorageTarget::kInterpolator;
|
|
storage_index_export = uint32_t(export_register) -
|
|
uint32_t(ExportRegister::kVSInterpolator0);
|
|
} else if (export_register == ExportRegister::kVSPosition) {
|
|
storage_target = InstructionStorageTarget::kPosition;
|
|
} else if (export_register ==
|
|
ExportRegister::kVSPointSizeEdgeFlagKillVertex) {
|
|
storage_target = InstructionStorageTarget::kPointSizeEdgeFlagKillVertex;
|
|
}
|
|
} else if (shader_type == xenos::ShaderType::kPixel) {
|
|
if (export_register >= ExportRegister::kPSColor0 &&
|
|
export_register <= ExportRegister::kPSColor3) {
|
|
storage_target = InstructionStorageTarget::kColor;
|
|
storage_index_export =
|
|
uint32_t(export_register) - uint32_t(ExportRegister::kPSColor0);
|
|
} else if (export_register == ExportRegister::kPSDepth) {
|
|
storage_target = InstructionStorageTarget::kDepth;
|
|
}
|
|
}
|
|
if (storage_target == InstructionStorageTarget::kNone) {
|
|
assert_always();
|
|
XELOGE(
|
|
"ShaderTranslator::ParseAluInstruction: Unsupported write to export "
|
|
"{}",
|
|
uint32_t(export_register));
|
|
}
|
|
}
|
|
|
|
// Vector operation and constant 0/1 writes.
|
|
|
|
ucode::AluVectorOpcode vector_opcode = op.vector_opcode();
|
|
instr.vector_opcode = vector_opcode;
|
|
const ucode::AluVectorOpcodeInfo& vector_opcode_info =
|
|
ucode::GetAluVectorOpcodeInfo(vector_opcode);
|
|
instr.vector_opcode_name = vector_opcode_info.name;
|
|
|
|
instr.vector_and_constant_result.storage_target = storage_target;
|
|
instr.vector_and_constant_result.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAbsolute;
|
|
if (is_export) {
|
|
instr.vector_and_constant_result.storage_index = storage_index_export;
|
|
} else {
|
|
instr.vector_and_constant_result.storage_index = op.vector_dest();
|
|
if (op.is_vector_dest_relative()) {
|
|
instr.vector_and_constant_result.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kLoopRelative;
|
|
}
|
|
}
|
|
instr.vector_and_constant_result.is_clamped = op.vector_clamp();
|
|
uint32_t constant_0_mask = op.GetConstant0WriteMask();
|
|
uint32_t constant_1_mask = op.GetConstant1WriteMask();
|
|
instr.vector_and_constant_result.original_write_mask =
|
|
op.GetVectorOpResultWriteMask() | constant_0_mask | constant_1_mask;
|
|
for (uint32_t i = 0; i < 4; ++i) {
|
|
SwizzleSource component = GetSwizzleFromComponentIndex(i);
|
|
if (constant_0_mask & (1 << i)) {
|
|
component = SwizzleSource::k0;
|
|
} else if (constant_1_mask & (1 << i)) {
|
|
component = SwizzleSource::k1;
|
|
}
|
|
instr.vector_and_constant_result.components[i] = component;
|
|
}
|
|
|
|
instr.vector_operand_count = vector_opcode_info.GetOperandCount();
|
|
for (uint32_t i = 0; i < instr.vector_operand_count; ++i) {
|
|
InstructionOperand& vector_operand = instr.vector_operands[i];
|
|
ParseAluInstructionOperand(op, i + 1, 4, vector_operand);
|
|
}
|
|
|
|
// Scalar operation.
|
|
|
|
ucode::AluScalarOpcode scalar_opcode = op.scalar_opcode();
|
|
instr.scalar_opcode = scalar_opcode;
|
|
const ucode::AluScalarOpcodeInfo& scalar_opcode_info =
|
|
ucode::GetAluScalarOpcodeInfo(scalar_opcode);
|
|
instr.scalar_opcode_name = scalar_opcode_info.name;
|
|
|
|
instr.scalar_result.storage_target = storage_target;
|
|
instr.scalar_result.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAbsolute;
|
|
if (is_export) {
|
|
instr.scalar_result.storage_index = storage_index_export;
|
|
} else {
|
|
instr.scalar_result.storage_index = op.scalar_dest();
|
|
if (op.is_scalar_dest_relative()) {
|
|
instr.scalar_result.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kLoopRelative;
|
|
}
|
|
}
|
|
instr.scalar_result.is_clamped = op.scalar_clamp();
|
|
instr.scalar_result.original_write_mask = op.GetScalarOpResultWriteMask();
|
|
for (uint32_t i = 0; i < 4; ++i) {
|
|
instr.scalar_result.components[i] = GetSwizzleFromComponentIndex(i);
|
|
}
|
|
|
|
instr.scalar_operand_count = scalar_opcode_info.operand_count;
|
|
if (instr.scalar_operand_count) {
|
|
if (instr.scalar_operand_count == 1) {
|
|
ParseAluInstructionOperand(
|
|
op, 3, scalar_opcode_info.single_operand_is_two_component ? 2 : 1,
|
|
instr.scalar_operands[0]);
|
|
} else {
|
|
// Constant and temporary register.
|
|
|
|
bool src3_negate = op.src_negate(3);
|
|
uint32_t src3_swizzle = op.src_swizzle(3);
|
|
|
|
// Left-hand constant operand (`a` - W swizzle).
|
|
InstructionOperand& const_op = instr.scalar_operands[0];
|
|
const_op.is_negated = src3_negate;
|
|
const_op.is_absolute_value = op.abs_constants();
|
|
const_op.storage_source = InstructionStorageSource::kConstantFloat;
|
|
const_op.storage_index = op.src_reg(3);
|
|
if (op.src_const_is_addressed(3)) {
|
|
if (op.is_const_address_register_relative()) {
|
|
const_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAddressRegisterRelative;
|
|
} else {
|
|
const_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kLoopRelative;
|
|
}
|
|
} else {
|
|
const_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAbsolute;
|
|
}
|
|
const_op.component_count = 1;
|
|
const_op.components[0] = GetSwizzledAluSourceComponent(src3_swizzle, 3);
|
|
|
|
// Right-hand temporary register operand (`b` - X swizzle).
|
|
InstructionOperand& temp_op = instr.scalar_operands[1];
|
|
temp_op.is_negated = src3_negate;
|
|
temp_op.is_absolute_value = op.abs_constants();
|
|
temp_op.storage_source = InstructionStorageSource::kRegister;
|
|
temp_op.storage_index = op.scalar_const_reg_op_src_temp_reg();
|
|
temp_op.storage_addressing_mode =
|
|
InstructionStorageAddressingMode::kAbsolute;
|
|
temp_op.component_count = 1;
|
|
temp_op.components[0] = GetSwizzledAluSourceComponent(src3_swizzle, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ParsedAluInstruction::IsScalarOpDefaultNop() const {
|
|
if (scalar_opcode != ucode::AluScalarOpcode::kRetainPrev ||
|
|
scalar_result.original_write_mask || scalar_result.is_clamped) {
|
|
return false;
|
|
}
|
|
if (scalar_result.storage_target == InstructionStorageTarget::kRegister) {
|
|
if (scalar_result.storage_index != 0 ||
|
|
scalar_result.storage_addressing_mode !=
|
|
InstructionStorageAddressingMode::kAbsolute) {
|
|
return false;
|
|
}
|
|
}
|
|
// For exports, if both are nop, the vector operation will be kept to state in
|
|
// the microcode that the destination in the microcode is an export.
|
|
return true;
|
|
}
|
|
|
|
bool ParsedAluInstruction::IsNop() const {
|
|
return scalar_opcode == ucode::AluScalarOpcode::kRetainPrev &&
|
|
!scalar_result.GetUsedWriteMask() &&
|
|
!vector_and_constant_result.GetUsedWriteMask() &&
|
|
!ucode::GetAluVectorOpcodeInfo(vector_opcode).changed_state;
|
|
}
|
|
|
|
uint32_t ParsedAluInstruction::GetMemExportStreamConstant() const {
|
|
if (vector_and_constant_result.storage_target ==
|
|
InstructionStorageTarget::kExportAddress &&
|
|
vector_opcode == ucode::AluVectorOpcode::kMad &&
|
|
vector_and_constant_result.GetUsedResultComponents() == 0b1111 &&
|
|
!vector_and_constant_result.is_clamped &&
|
|
vector_operands[2].storage_source ==
|
|
InstructionStorageSource::kConstantFloat &&
|
|
vector_operands[2].storage_addressing_mode ==
|
|
InstructionStorageAddressingMode::kAbsolute &&
|
|
vector_operands[2].IsStandardSwizzle() &&
|
|
!vector_operands[2].is_negated && !vector_operands[2].is_absolute_value) {
|
|
return vector_operands[2].storage_index;
|
|
}
|
|
return UINT32_MAX;
|
|
}
|
|
|
|
} // namespace gpu
|
|
} // namespace xe
|