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

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• Hash : 7cf9cd24
  Author :
  Date : 2018-10-09T15:27:32
  

  Add flags to shader translator to emulate gl_DrawID
  
  Adds support for translating gl_DrawID for implementation of
  GL_ANGLE_multi_draw.
  
  Currently the change only supports and allows emulation of the
  draw id using a uniform variable named `gl_DrawID`. This uniform is
  mapped in the translated shader to a hashed name that does not
  use the gl_ namespace
  
  Bug: chromium:890539
  
  Change-Id: I08a246ca911e88e733ccdf22f1ed69dcae948e05
  Reviewed-on: https://chromium-review.googlesource.com/c/1271957
  Commit-Queue: Austin Eng <enga@chromium.org>
  Reviewed-by: Kai Ninomiya <kainino@chromium.org>
  

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• src/compiler/translator/tree_ops/EmulateGLDrawID.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.
  //
  // EmulateGLDrawID is an AST traverser to convert the gl_DrawID builtin
  // to a uniform int
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_EMULATEGLDRAWID_H_
  #define COMPILER_TRANSLATOR_TREEOPS_EMULATEGLDRAWID_H_
  
  #include <GLSLANG/ShaderLang.h>
  #include <vector>
  
  #include "compiler/translator/HashNames.h"
  
  namespace sh
  {
  struct Uniform;
  class TIntermBlock;
  class TSymbolTable;
  
  void EmulateGLDrawID(TIntermBlock *root,
                       TSymbolTable *symbolTable,
                       std::vector<sh::Uniform> *uniforms,
                       bool shouldCollect);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_EMULATEGLDRAWID_H_
  

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