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

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• Hash : 7ef89a42
  Author :
  Date : 2017-07-05T14:23:06
  

  Expose ViewID_OVR impostor in the fragment shader
  
  The OVR_multiview specification states that gl_ViewID_OVR is visible
  at each pipeline stage. Previously to this patch the ViewID_OVR
  impostor was declared only in the vertex shader and occurrences of
  gl_ViewID_OVR in the fragment shader were not being handled. The
  patch addresses the issue by declaring the ViewID_OVR variable as
  a vertex output in the vertex shader and as a fragment input
  in the fragment shader.
  
  BUG=angleproject:2062
  TEST=angle_unittests
  
  Change-Id: I895953e81d3632d9bb873e8ac081fdf36f63f6b7
  Reviewed-on: https://chromium-review.googlesource.com/559337
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• src/compiler/translator/DeclareAndInitBuiltinsForInstancedMultiview.h

• //
  // Copyright (c) 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.
  //
  
  #ifndef COMPILER_TRANSLATOR_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  #define COMPILER_TRANSLATOR_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_
  
  #include "angle_gl.h"
  
  class TIntermBlock;
  
  namespace sh
  {
  
  void DeclareAndInitBuiltinsForInstancedMultiview(TIntermBlock *root,
                                                   unsigned numberOfViews,
                                                   GLenum shaderType);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_DECLAREANDINITBUILTINSFORINSTANCEDMULTIVIEW_H_

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