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

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• Hash : 1d5aaa6c
  Author :
  Date : 2019-08-06T11:20:13
  

  Vulkan: support dynamic indices in array of arrays
  
  Expands existing struct-sampler rewrite to flatten arrays of arrays.
  This allows us to support dynamically-uniform array indexing, which is
  core in ES 3.2.
  
  Samplers inside (possibly nested) structs are broken apart as before,
  and then if the type resulting from merging the array sizes of the field
  and its containing structs is an array of array, the array is flattened.
  
  Also adds an offset parameter to functions taking in arrays to account
  for this translation.
  
  As a result of outer array sizes leaking into function signatures,
  functions taking arrays of different sizes are duplicated according to
  how the function is invoked.
  
  Bug: angleproject:3604
  Change-Id: Ic9373fd12a38f19bd811eac92e281055a63c1901
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1744177
  Commit-Queue: James Dong <dongja@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/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_REWRITESTRUCTSAMPLERS_H_
  #define COMPILER_TRANSLATOR_TREEOPS_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_REWRITESTRUCTSAMPLERS_H_
  

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