mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-19 11:30:15 +00:00
529 lines
20 KiB
C++
529 lines
20 KiB
C++
// Copyright (c) 2017 The Khronos Group Inc.
|
|
// Copyright (c) 2017 Valve Corporation
|
|
// Copyright (c) 2017 LunarG Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "aggressive_dead_code_elim_pass.h"
|
|
|
|
#include "cfa.h"
|
|
#include "iterator.h"
|
|
#include "latest_version_glsl_std_450_header.h"
|
|
|
|
#include <stack>
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
|
|
namespace {
|
|
|
|
const uint32_t kTypePointerStorageClassInIdx = 0;
|
|
const uint32_t kEntryPointFunctionIdInIdx = 1;
|
|
const uint32_t kSelectionMergeMergeBlockIdInIdx = 0;
|
|
const uint32_t kLoopMergeMergeBlockIdInIdx = 0;
|
|
const uint32_t kLoopMergeContinueBlockIdInIdx = 1;
|
|
|
|
} // namespace
|
|
|
|
bool AggressiveDCEPass::IsVarOfStorage(uint32_t varId, uint32_t storageClass) {
|
|
if (varId == 0) return false;
|
|
const ir::Instruction* varInst = get_def_use_mgr()->GetDef(varId);
|
|
const SpvOp op = varInst->opcode();
|
|
if (op != SpvOpVariable) return false;
|
|
const uint32_t varTypeId = varInst->type_id();
|
|
const ir::Instruction* varTypeInst = get_def_use_mgr()->GetDef(varTypeId);
|
|
if (varTypeInst->opcode() != SpvOpTypePointer) return false;
|
|
return varTypeInst->GetSingleWordInOperand(kTypePointerStorageClassInIdx) ==
|
|
storageClass;
|
|
}
|
|
|
|
bool AggressiveDCEPass::IsLocalVar(uint32_t varId) {
|
|
return IsVarOfStorage(varId, SpvStorageClassFunction) ||
|
|
(IsVarOfStorage(varId, SpvStorageClassPrivate) && private_like_local_);
|
|
}
|
|
|
|
void AggressiveDCEPass::AddStores(uint32_t ptrId) {
|
|
get_def_use_mgr()->ForEachUser(ptrId, [this](ir::Instruction* user) {
|
|
switch (user->opcode()) {
|
|
case SpvOpAccessChain:
|
|
case SpvOpInBoundsAccessChain:
|
|
case SpvOpCopyObject:
|
|
this->AddStores(user->result_id());
|
|
break;
|
|
case SpvOpLoad:
|
|
break;
|
|
// If default, assume it stores e.g. frexp, modf, function call
|
|
case SpvOpStore:
|
|
default:
|
|
if (!IsLive(user)) AddToWorklist(user);
|
|
break;
|
|
}
|
|
});
|
|
}
|
|
|
|
bool AggressiveDCEPass::AllExtensionsSupported() const {
|
|
// If any extension not in whitelist, return false
|
|
for (auto& ei : get_module()->extensions()) {
|
|
const char* extName =
|
|
reinterpret_cast<const char*>(&ei.GetInOperand(0).words[0]);
|
|
if (extensions_whitelist_.find(extName) == extensions_whitelist_.end())
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool AggressiveDCEPass::IsTargetDead(ir::Instruction* inst) {
|
|
const uint32_t tId = inst->GetSingleWordInOperand(0);
|
|
const ir::Instruction* tInst = get_def_use_mgr()->GetDef(tId);
|
|
if (dead_insts_.find(tInst) != dead_insts_.end()) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void AggressiveDCEPass::ProcessLoad(uint32_t varId) {
|
|
// Only process locals
|
|
if (!IsLocalVar(varId)) return;
|
|
// Return if already processed
|
|
if (live_local_vars_.find(varId) != live_local_vars_.end()) return;
|
|
// Mark all stores to varId as live
|
|
AddStores(varId);
|
|
// Cache varId as processed
|
|
live_local_vars_.insert(varId);
|
|
}
|
|
|
|
bool AggressiveDCEPass::IsStructuredIfOrLoopHeader(ir::BasicBlock* bp,
|
|
ir::Instruction** mergeInst,
|
|
ir::Instruction** branchInst,
|
|
uint32_t* mergeBlockId) {
|
|
ir::Instruction* mi = bp->GetMergeInst();
|
|
if (mi == nullptr) return false;
|
|
ir::Instruction* bri = &*bp->tail();
|
|
// Make sure it is not a Switch
|
|
if (mi->opcode() == SpvOpSelectionMerge &&
|
|
bri->opcode() != SpvOpBranchConditional)
|
|
return false;
|
|
if (branchInst != nullptr) *branchInst = bri;
|
|
if (mergeInst != nullptr) *mergeInst = mi;
|
|
if (mergeBlockId != nullptr) *mergeBlockId = mi->GetSingleWordInOperand(0);
|
|
return true;
|
|
}
|
|
|
|
void AggressiveDCEPass::ComputeBlock2HeaderMaps(
|
|
std::list<ir::BasicBlock*>& structuredOrder) {
|
|
block2headerBranch_.clear();
|
|
branch2merge_.clear();
|
|
std::stack<ir::Instruction*> currentHeaderBranch;
|
|
currentHeaderBranch.push(nullptr);
|
|
uint32_t currentMergeBlockId = 0;
|
|
for (auto bi = structuredOrder.begin(); bi != structuredOrder.end(); ++bi) {
|
|
// If this block is the merge block of the current control construct,
|
|
// we are leaving the current construct so we must update state
|
|
if ((*bi)->id() == currentMergeBlockId) {
|
|
currentHeaderBranch.pop();
|
|
ir::Instruction* chb = currentHeaderBranch.top();
|
|
if (chb != nullptr)
|
|
currentMergeBlockId = branch2merge_[chb]->GetSingleWordInOperand(0);
|
|
}
|
|
ir::Instruction* mergeInst;
|
|
ir::Instruction* branchInst;
|
|
uint32_t mergeBlockId;
|
|
bool is_header =
|
|
IsStructuredIfOrLoopHeader(*bi, &mergeInst, &branchInst, &mergeBlockId);
|
|
// If this is a loop header, update state first so the block will map to
|
|
// the loop.
|
|
if (is_header && mergeInst->opcode() == SpvOpLoopMerge) {
|
|
currentHeaderBranch.push(branchInst);
|
|
branch2merge_[branchInst] = mergeInst;
|
|
currentMergeBlockId = mergeBlockId;
|
|
}
|
|
// Map the block to the current construct.
|
|
block2headerBranch_[*bi] = currentHeaderBranch.top();
|
|
// If this is an if header, update state so following blocks map to the if.
|
|
if (is_header && mergeInst->opcode() == SpvOpSelectionMerge) {
|
|
currentHeaderBranch.push(branchInst);
|
|
branch2merge_[branchInst] = mergeInst;
|
|
currentMergeBlockId = mergeBlockId;
|
|
}
|
|
}
|
|
}
|
|
|
|
void AggressiveDCEPass::ComputeInst2BlockMap(ir::Function* func) {
|
|
for (auto& blk : *func) {
|
|
blk.ForEachInst(
|
|
[&blk, this](ir::Instruction* ip) { inst2block_[ip] = &blk; });
|
|
}
|
|
}
|
|
|
|
void AggressiveDCEPass::AddBranch(uint32_t labelId, ir::BasicBlock* bp) {
|
|
std::unique_ptr<ir::Instruction> newBranch(new ir::Instruction(
|
|
context(), SpvOpBranch, 0, 0,
|
|
{{spv_operand_type_t::SPV_OPERAND_TYPE_ID, {labelId}}}));
|
|
get_def_use_mgr()->AnalyzeInstDefUse(&*newBranch);
|
|
bp->AddInstruction(std::move(newBranch));
|
|
}
|
|
|
|
void AggressiveDCEPass::AddBreaksAndContinuesToWorklist(
|
|
ir::Instruction* loopMerge) {
|
|
const uint32_t mergeId =
|
|
loopMerge->GetSingleWordInOperand(kLoopMergeMergeBlockIdInIdx);
|
|
get_def_use_mgr()->ForEachUser(
|
|
mergeId, [&loopMerge, this](ir::Instruction* user) {
|
|
// A branch to the merge block can only be a break if it is nested in
|
|
// the current loop
|
|
SpvOp op = user->opcode();
|
|
if (op != SpvOpBranchConditional && op != SpvOpBranch) return;
|
|
ir::Instruction* branchInst = user;
|
|
while (true) {
|
|
ir::BasicBlock* blk = inst2block_[branchInst];
|
|
ir::Instruction* hdrBranch = block2headerBranch_[blk];
|
|
if (hdrBranch == nullptr) return;
|
|
ir::Instruction* hdrMerge = branch2merge_[hdrBranch];
|
|
if (hdrMerge == loopMerge) break;
|
|
branchInst = hdrBranch;
|
|
}
|
|
if (!IsLive(user)) {
|
|
AddToWorklist(user);
|
|
// Add branch's merge if there is one
|
|
ir::Instruction* userMerge = branch2merge_[user];
|
|
if (userMerge != nullptr) AddToWorklist(userMerge);
|
|
}
|
|
});
|
|
const uint32_t contId =
|
|
loopMerge->GetSingleWordInOperand(kLoopMergeContinueBlockIdInIdx);
|
|
get_def_use_mgr()->ForEachUser(contId, [&contId,
|
|
this](ir::Instruction* user) {
|
|
SpvOp op = user->opcode();
|
|
if (op == SpvOpBranchConditional) {
|
|
// A conditional branch can only be a continue if it does not have a merge
|
|
// instruction or its merge block is not the continue block.
|
|
ir::Instruction* hdrMerge = branch2merge_[user];
|
|
if (hdrMerge != nullptr && hdrMerge->opcode() == SpvOpSelectionMerge) {
|
|
uint32_t hdrMergeId =
|
|
hdrMerge->GetSingleWordInOperand(kSelectionMergeMergeBlockIdInIdx);
|
|
if (hdrMergeId == contId) return;
|
|
// Need to mark merge instruction too
|
|
if (!IsLive(hdrMerge)) AddToWorklist(hdrMerge);
|
|
}
|
|
} else if (op == SpvOpBranch) {
|
|
// An unconditional branch can only be a continue if it is not
|
|
// branching to its own merge block.
|
|
ir::BasicBlock* blk = inst2block_[user];
|
|
ir::Instruction* hdrBranch = block2headerBranch_[blk];
|
|
if (hdrBranch == nullptr) return;
|
|
ir::Instruction* hdrMerge = branch2merge_[hdrBranch];
|
|
if (hdrMerge->opcode() == SpvOpLoopMerge) return;
|
|
uint32_t hdrMergeId =
|
|
hdrMerge->GetSingleWordInOperand(kSelectionMergeMergeBlockIdInIdx);
|
|
if (contId == hdrMergeId) return;
|
|
} else {
|
|
return;
|
|
}
|
|
if (!IsLive(user)) AddToWorklist(user);
|
|
});
|
|
}
|
|
|
|
bool AggressiveDCEPass::AggressiveDCE(ir::Function* func) {
|
|
// Compute map from instruction to block
|
|
ComputeInst2BlockMap(func);
|
|
// Compute map from block to controlling conditional branch
|
|
std::list<ir::BasicBlock*> structuredOrder;
|
|
cfg()->ComputeStructuredOrder(func, &*func->begin(), &structuredOrder);
|
|
ComputeBlock2HeaderMaps(structuredOrder);
|
|
bool modified = false;
|
|
// Add instructions with external side effects to worklist. Also add branches
|
|
// EXCEPT those immediately contained in an "if" selection construct or a loop
|
|
// or continue construct.
|
|
// TODO(greg-lunarg): Handle Frexp, Modf more optimally
|
|
call_in_func_ = false;
|
|
func_is_entry_point_ = false;
|
|
private_stores_.clear();
|
|
// Stacks to keep track of when we are inside an if- or loop-construct.
|
|
// When immediately inside an if- or loop-construct, we do not initially
|
|
// mark branches live. All other branches must be marked live.
|
|
std::stack<bool> assume_branches_live;
|
|
std::stack<uint32_t> currentMergeBlockId;
|
|
// Push sentinel values on stack for when outside of any control flow.
|
|
assume_branches_live.push(true);
|
|
currentMergeBlockId.push(0);
|
|
for (auto bi = structuredOrder.begin(); bi != structuredOrder.end(); ++bi) {
|
|
// If exiting if or loop, update stacks
|
|
if ((*bi)->id() == currentMergeBlockId.top()) {
|
|
assume_branches_live.pop();
|
|
currentMergeBlockId.pop();
|
|
}
|
|
for (auto ii = (*bi)->begin(); ii != (*bi)->end(); ++ii) {
|
|
SpvOp op = ii->opcode();
|
|
switch (op) {
|
|
case SpvOpStore: {
|
|
uint32_t varId;
|
|
(void)GetPtr(&*ii, &varId);
|
|
// Mark stores as live if their variable is not function scope
|
|
// and is not private scope. Remember private stores for possible
|
|
// later inclusion
|
|
if (IsVarOfStorage(varId, SpvStorageClassPrivate))
|
|
private_stores_.push_back(&*ii);
|
|
else if (!IsVarOfStorage(varId, SpvStorageClassFunction))
|
|
AddToWorklist(&*ii);
|
|
} break;
|
|
case SpvOpLoopMerge: {
|
|
assume_branches_live.push(false);
|
|
currentMergeBlockId.push(
|
|
ii->GetSingleWordInOperand(kLoopMergeMergeBlockIdInIdx));
|
|
} break;
|
|
case SpvOpSelectionMerge: {
|
|
auto brii = ii;
|
|
++brii;
|
|
bool is_structured_if = brii->opcode() == SpvOpBranchConditional;
|
|
assume_branches_live.push(!is_structured_if);
|
|
currentMergeBlockId.push(
|
|
ii->GetSingleWordInOperand(kSelectionMergeMergeBlockIdInIdx));
|
|
if (!is_structured_if) AddToWorklist(&*ii);
|
|
} break;
|
|
case SpvOpBranch:
|
|
case SpvOpBranchConditional: {
|
|
if (assume_branches_live.top()) AddToWorklist(&*ii);
|
|
} break;
|
|
default: {
|
|
// Function calls, atomics, function params, function returns, etc.
|
|
// TODO(greg-lunarg): function calls live only if write to non-local
|
|
if (!context()->IsCombinatorInstruction(&*ii)) {
|
|
AddToWorklist(&*ii);
|
|
}
|
|
// Remember function calls
|
|
if (op == SpvOpFunctionCall) call_in_func_ = true;
|
|
} break;
|
|
}
|
|
}
|
|
}
|
|
// See if current function is an entry point
|
|
for (auto& ei : get_module()->entry_points()) {
|
|
if (ei.GetSingleWordInOperand(kEntryPointFunctionIdInIdx) ==
|
|
func->result_id()) {
|
|
func_is_entry_point_ = true;
|
|
break;
|
|
}
|
|
}
|
|
// If the current function is an entry point and has no function calls,
|
|
// we can optimize private variables as locals
|
|
private_like_local_ = func_is_entry_point_ && !call_in_func_;
|
|
// If privates are not like local, add their stores to worklist
|
|
if (!private_like_local_)
|
|
for (auto& ps : private_stores_) AddToWorklist(ps);
|
|
// Add OpGroupDecorates to worklist because they are a pain to remove
|
|
// ids from.
|
|
// TODO(greg-lunarg): Handle dead ids in OpGroupDecorate
|
|
for (auto& ai : get_module()->annotations()) {
|
|
if (ai.opcode() == SpvOpGroupDecorate) AddToWorklist(&ai);
|
|
}
|
|
// Perform closure on live instruction set.
|
|
while (!worklist_.empty()) {
|
|
ir::Instruction* liveInst = worklist_.front();
|
|
// Add all operand instructions if not already live
|
|
liveInst->ForEachInId([&liveInst, this](const uint32_t* iid) {
|
|
ir::Instruction* inInst = get_def_use_mgr()->GetDef(*iid);
|
|
// Do not add label if an operand of a branch. This is not needed
|
|
// as part of live code discovery and can create false live code,
|
|
// for example, the branch to a header of a loop.
|
|
if (inInst->opcode() == SpvOpLabel && liveInst->IsBranch()) return;
|
|
if (!IsLive(inInst)) AddToWorklist(inInst);
|
|
});
|
|
// If in a structured if or loop construct, add the controlling
|
|
// conditional branch and its merge. Any containing control construct
|
|
// is marked live when the merge and branch are processed out of the
|
|
// worklist.
|
|
ir::BasicBlock* blk = inst2block_[liveInst];
|
|
ir::Instruction* branchInst = block2headerBranch_[blk];
|
|
if (branchInst != nullptr && !IsLive(branchInst)) {
|
|
AddToWorklist(branchInst);
|
|
ir::Instruction* mergeInst = branch2merge_[branchInst];
|
|
AddToWorklist(mergeInst);
|
|
// If in a loop, mark all its break and continue instructions live
|
|
if (mergeInst->opcode() == SpvOpLoopMerge)
|
|
AddBreaksAndContinuesToWorklist(mergeInst);
|
|
}
|
|
// If local load, add all variable's stores if variable not already live
|
|
if (liveInst->opcode() == SpvOpLoad) {
|
|
uint32_t varId;
|
|
(void)GetPtr(liveInst, &varId);
|
|
if (varId != 0) {
|
|
ProcessLoad(varId);
|
|
}
|
|
}
|
|
// If function call, treat as if it loads from all pointer arguments
|
|
else if (liveInst->opcode() == SpvOpFunctionCall) {
|
|
liveInst->ForEachInId([this](const uint32_t* iid) {
|
|
// Skip non-ptr args
|
|
if (!IsPtr(*iid)) return;
|
|
uint32_t varId;
|
|
(void)GetPtr(*iid, &varId);
|
|
ProcessLoad(varId);
|
|
});
|
|
}
|
|
// If function parameter, treat as if it's result id is loaded from
|
|
else if (liveInst->opcode() == SpvOpFunctionParameter) {
|
|
ProcessLoad(liveInst->result_id());
|
|
}
|
|
worklist_.pop();
|
|
}
|
|
// Mark all non-live instructions dead except non-structured branches, which
|
|
// now should be considered live unless their block is deleted.
|
|
for (auto bi = structuredOrder.begin(); bi != structuredOrder.end(); ++bi) {
|
|
for (auto ii = (*bi)->begin(); ii != (*bi)->end(); ++ii) {
|
|
if (IsLive(&*ii)) continue;
|
|
// TODO(greg-lunarg
|
|
// https://github.com/KhronosGroup/SPIRV-Tools/issues/1021) This should be
|
|
// using ii->IsBranch(), but this code does not handle OpSwitch
|
|
// instructions yet.
|
|
if ((ii->opcode() == SpvOpBranch ||
|
|
ii->opcode() == SpvOpBranchConditional) &&
|
|
!IsStructuredIfOrLoopHeader(*bi, nullptr, nullptr, nullptr))
|
|
continue;
|
|
dead_insts_.insert(&*ii);
|
|
}
|
|
}
|
|
// Remove debug and annotation statements referencing dead instructions.
|
|
// This must be done before killing the instructions, otherwise there are
|
|
// dead objects in the def/use database.
|
|
ir::Instruction* instruction = &*get_module()->debug2_begin();
|
|
while (instruction) {
|
|
if (instruction->opcode() != SpvOpName) {
|
|
instruction = instruction->NextNode();
|
|
continue;
|
|
}
|
|
|
|
if (IsTargetDead(instruction)) {
|
|
instruction = context()->KillInst(instruction);
|
|
modified = true;
|
|
} else {
|
|
instruction = instruction->NextNode();
|
|
}
|
|
}
|
|
|
|
instruction = &*get_module()->annotation_begin();
|
|
while (instruction) {
|
|
if (instruction->opcode() != SpvOpDecorate &&
|
|
instruction->opcode() != SpvOpDecorateId) {
|
|
instruction = instruction->NextNode();
|
|
continue;
|
|
}
|
|
|
|
if (IsTargetDead(instruction)) {
|
|
instruction = context()->KillInst(instruction);
|
|
modified = true;
|
|
} else {
|
|
instruction = instruction->NextNode();
|
|
}
|
|
}
|
|
|
|
// Kill dead instructions and remember dead blocks
|
|
for (auto bi = structuredOrder.begin(); bi != structuredOrder.end();) {
|
|
uint32_t mergeBlockId = 0;
|
|
(*bi)->ForEachInst([this, &modified, &mergeBlockId](ir::Instruction* inst) {
|
|
if (dead_insts_.find(inst) == dead_insts_.end()) return;
|
|
// If dead instruction is selection merge, remember merge block
|
|
// for new branch at end of block
|
|
if (inst->opcode() == SpvOpSelectionMerge ||
|
|
inst->opcode() == SpvOpLoopMerge)
|
|
mergeBlockId = inst->GetSingleWordInOperand(0);
|
|
context()->KillInst(inst);
|
|
modified = true;
|
|
});
|
|
// If a structured if or loop was deleted, add a branch to its merge
|
|
// block, and traverse to the merge block and continue processing there.
|
|
// We know the block still exists because the label is not deleted.
|
|
if (mergeBlockId != 0) {
|
|
AddBranch(mergeBlockId, *bi);
|
|
for (++bi; (*bi)->id() != mergeBlockId; ++bi) {
|
|
}
|
|
} else {
|
|
++bi;
|
|
}
|
|
}
|
|
// Cleanup all CFG including all unreachable blocks
|
|
CFGCleanup(func);
|
|
|
|
return modified;
|
|
}
|
|
|
|
void AggressiveDCEPass::Initialize(ir::IRContext* c) {
|
|
InitializeProcessing(c);
|
|
|
|
// Clear collections
|
|
worklist_ = std::queue<ir::Instruction*>{};
|
|
live_insts_.clear();
|
|
live_local_vars_.clear();
|
|
dead_insts_.clear();
|
|
|
|
// Initialize extensions whitelist
|
|
InitExtensions();
|
|
}
|
|
|
|
Pass::Status AggressiveDCEPass::ProcessImpl() {
|
|
// Current functionality assumes shader capability
|
|
// TODO(greg-lunarg): Handle additional capabilities
|
|
if (!context()->get_feature_mgr()->HasCapability(SpvCapabilityShader))
|
|
return Status::SuccessWithoutChange;
|
|
// Current functionality assumes relaxed logical addressing (see
|
|
// instruction.h)
|
|
// TODO(greg-lunarg): Handle non-logical addressing
|
|
if (context()->get_feature_mgr()->HasCapability(SpvCapabilityAddresses))
|
|
return Status::SuccessWithoutChange;
|
|
// If any extensions in the module are not explicitly supported,
|
|
// return unmodified.
|
|
if (!AllExtensionsSupported()) return Status::SuccessWithoutChange;
|
|
// Process all entry point functions
|
|
ProcessFunction pfn = [this](ir::Function* fp) { return AggressiveDCE(fp); };
|
|
bool modified = ProcessEntryPointCallTree(pfn, get_module());
|
|
return modified ? Status::SuccessWithChange : Status::SuccessWithoutChange;
|
|
}
|
|
|
|
AggressiveDCEPass::AggressiveDCEPass() {}
|
|
|
|
Pass::Status AggressiveDCEPass::Process(ir::IRContext* c) {
|
|
Initialize(c);
|
|
return ProcessImpl();
|
|
}
|
|
|
|
void AggressiveDCEPass::InitExtensions() {
|
|
extensions_whitelist_.clear();
|
|
extensions_whitelist_.insert({
|
|
"SPV_AMD_shader_explicit_vertex_parameter",
|
|
"SPV_AMD_shader_trinary_minmax",
|
|
"SPV_AMD_gcn_shader",
|
|
"SPV_KHR_shader_ballot",
|
|
"SPV_AMD_shader_ballot",
|
|
"SPV_AMD_gpu_shader_half_float",
|
|
"SPV_KHR_shader_draw_parameters",
|
|
"SPV_KHR_subgroup_vote",
|
|
"SPV_KHR_16bit_storage",
|
|
"SPV_KHR_device_group",
|
|
"SPV_KHR_multiview",
|
|
"SPV_NVX_multiview_per_view_attributes",
|
|
"SPV_NV_viewport_array2",
|
|
"SPV_NV_stereo_view_rendering",
|
|
"SPV_NV_sample_mask_override_coverage",
|
|
"SPV_NV_geometry_shader_passthrough",
|
|
"SPV_AMD_texture_gather_bias_lod",
|
|
"SPV_KHR_storage_buffer_storage_class",
|
|
// SPV_KHR_variable_pointers
|
|
// Currently do not support extended pointer expressions
|
|
"SPV_AMD_gpu_shader_int16",
|
|
"SPV_KHR_post_depth_coverage",
|
|
"SPV_KHR_shader_atomic_counter_ops",
|
|
});
|
|
}
|
|
|
|
} // namespace opt
|
|
} // namespace spvtools
|