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

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• Hash : 472c74c6
  Author :
  Date : 2019-08-19T16:32:13
  

  Translator: Allow tree validation in children of TCompiler
  
  This is to be able to perform validation inside TranslatorVulkan, even
  if it's through ASSERTs.
  
  Additionally, every transformation is changed such that they do their
  validation themselves.  TIntermTraverser::updateTree() performs the
  validation, which indirectly validates many of three tree
  transformations.  Some of the more ancient transformations that don't
  use this function directly call TCompiler::validateAST.
  
  Bug: angleproject:2733
  Change-Id: Ie4af029d34e053c5ad1dc8c2c2568eecd625d344
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1761149
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_ops/DeclareAndInitBuiltinsForInstancedMultiview.h

• //
  // Copyright 2017 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.
  //
  // Regardless of the shader type, the following AST transformations are applied:
  // - Add declaration of View_ID_OVR.
  // - Replace every occurrence of gl_ViewID_OVR with ViewID_OVR, mark ViewID_OVR as internal and
  // declare it as a flat varying.
  //
  // If the shader type is a vertex shader, the following AST transformations are applied:
  // - Replace every occurrence of gl_InstanceID with InstanceID, mark InstanceID as internal and set
  // its qualifier to EvqTemporary.
  // - Add initializers of ViewID_OVR and InstanceID to the beginning of the body of main. The pass
  // should be executed before any variables get collected so that usage of gl_InstanceID is recorded.
  // - If the output is ESSL or GLSL and the SH_SELECT_VIEW_IN_NV_GLSL_VERTEX_SHADER option is
  // enabled, the expression
  // "if (multiviewBaseViewLayerIndex < 0) {
  //      gl_ViewportIndex = int(ViewID_OVR);
  //  } else {
  //      gl_Layer = int(ViewID_OVR) + multiviewBaseViewLayerIndex;
  //  }"
  // is added after ViewID and InstanceID are initialized. Also, MultiviewRenderPath is added as a
  // uniform.
  //
  
  #ifndef COMPILER_TRANSLATOR_TREEOPS_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  #define COMPILER_TRANSLATOR_TREEOPS_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  
  #include "GLSLANG/ShaderLang.h"
  #include "angle_gl.h"
  #include "common/angleutils.h"
  
  namespace sh
  {
  
  class TCompiler;
  class TIntermBlock;
  class TSymbolTable;
  
  ANGLE_NO_DISCARD bool DeclareAndInitBuiltinsForInstancedMultiview(TCompiler *compiler,
                                                                    TIntermBlock *root,
                                                                    unsigned numberOfViews,
                                                                    GLenum shaderType,
                                                                    ShCompileOptions compileOptions,
                                                                    ShShaderOutput shaderOutput,
                                                                    TSymbolTable *symbolTable);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_TREEOPS_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  

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