kc3-lang/angle/src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h

• Show log

  Commit

• Hash : 382bf288
  Author :
  Date : 2020-12-24T23:56:39
  

  Organize AST transforms per backend
  
  Most of the AST transforms are written as a workaround to an issue that
  affects a single backend.  This change identifies such transforms and
  organizes them by backend.  They are then only built if the respective
  backend is.
  
  Additionally, about half of the GL transforms are due to mac
  workarounds, including the large RewriteRowMajorMatrices transform.
  Mac-specific workarounds are additionally only built on said platform.
  
  This change reduces the ANGLE binary size:
  
  - 106KB in a Vulkan-only build on Linux
  - 27KB in a GL-only build on Android (60KB on Linux)
  
  Bug: chromium:1084580
  Bug: chromium:1161513
  Change-Id: I64b334332c0d4f848756c6538af0d8d96864c7e9
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2601346
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  

Download

• src/compiler/translator/tree_ops/d3d/RewriteAtomicFunctionExpressions.h

• //
  // Copyright 2018 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // RewriteAtomicFunctionExpressions rewrites the expressions that contain
  // atomic function calls and cannot be directly translated into HLSL into
  // several simple ones that can be easily handled in the HLSL translator.
  //
  // We need to rewite these expressions because:
  // 1. All GLSL atomic functions have return values, which all represent the
  //    original value of the shared or ssbo variable; while all HLSL atomic
  //    functions don't, and the original value can be stored in the last
  //    parameter of the function call.
  // 2. For HLSL atomic functions, the last parameter that stores the original
  //    value is optional except for InterlockedExchange and
  //    InterlockedCompareExchange. Missing original_value in the call of
  //    InterlockedExchange or InterlockedCompareExchange results in a compile
  //    error from HLSL compiler.
  //
  // RewriteAtomicFunctionExpressions is a function that can modify the AST
  // to ensure all the expressions that contain atomic function calls can be
  // directly translated into HLSL expressions.
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_D3D_REWRITE_ATOMIC_FUNCTION_EXPRESSIONS_H_
  #define COMPILER_TRANSLATOR_TREEOPS_D3D_REWRITE_ATOMIC_FUNCTION_EXPRESSIONS_H_
  
  #include "common/angleutils.h"
  
  namespace sh
  {
  class TCompiler;
  class TIntermNode;
  class TSymbolTable;
  
  ANGLE_NO_DISCARD bool RewriteAtomicFunctionExpressions(TCompiler *compiler,
                                                         TIntermNode *root,
                                                         TSymbolTable *symbolTable,
                                                         int shaderVersion);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_D3D_REWRITE_ATOMIC_FUNCTION_EXPRESSIONS_H_
  

Download