kc3-lang/angle/src/compiler/translator/tree_ops/vulkan/RewriteStructSamplers.h

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• 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>
  

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• src/compiler/translator/tree_ops/vulkan/RewriteStructSamplers.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.
  //
  // RewriteStructSamplers: Extract structs from samplers.
  //
  // This traverser is designed to strip out samplers from structs. It moves them into
  // separate uniform sampler declarations. This allows the struct to be stored in the
  // default uniform block. It also requires that we rewrite any functions that take the
  // struct as an argument. The struct is split into two arguments.
  //
  // For example:
  //   struct S { sampler2D samp; int i; };
  //   uniform S uni;
  // Is rewritten as:
  //   struct S { int i; };
  //   uniform S uni;
  //   uniform sampler2D uni_i;
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_VULKAN_REWRITESTRUCTSAMPLERS_H_
  #define COMPILER_TRANSLATOR_TREEOPS_VULKAN_REWRITESTRUCTSAMPLERS_H_
  
  #include "common/angleutils.h"
  
  namespace sh
  {
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  
  ANGLE_NO_DISCARD bool RewriteStructSamplers(TCompiler *compiler,
                                              TIntermBlock *root,
                                              TSymbolTable *symbolTable,
                                              int *removedUniformsCountOut);
  ANGLE_NO_DISCARD bool RewriteStructSamplersOld(TCompiler *compier,
                                                 TIntermBlock *root,
                                                 TSymbolTable *symbolTable,
                                                 int *removedUniformsCountOut);
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_VULKAN_REWRITESTRUCTSAMPLERS_H_
  

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