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

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• Hash : cdab03aa
  Author :
  Date : 2019-06-18T17:24:54
  

  Add flags to shader translator to emulate gl_BaseVertex and gl_BaseInstance
  
  Adds support for translating gl_BaseVertex and gl_BaseInstance for implementation of
  GL_ANGLE_base_vertex_base_instance.
  
  They will only be available in WebGL 2. Since there's no gl_VertexID and
  gl_InstanceID in WebGL 1. It won't be very useful to add them to WebGL
  1.
  
  Mostly follow pattern of gl_DrawID of GL_multi_draw
  
  BUG=angleproject:3402,chromium:891861
  
  Change-Id: Ifcd990c52d12f6814127b904e61a779b8d382e0c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1666361
  Commit-Queue: Shrek Shao <shrekshao@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/ExtensionBehavior.h

• //
  // Copyright (c) 2002-2010 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.
  //
  // ExtensionBehavior.h: Extension name enumeration and data structures for storing extension
  // behavior.
  
  #ifndef COMPILER_TRANSLATOR_EXTENSIONBEHAVIOR_H_
  #define COMPILER_TRANSLATOR_EXTENSIONBEHAVIOR_H_
  
  #include <map>
  
  namespace sh
  {
  
  enum class TExtension
  {
      UNDEFINED,  // Special value used to indicate no extension.
  
      ARB_texture_rectangle,
      ANGLE_texture_multisample,
      ARM_shader_framebuffer_fetch,
      EXT_blend_func_extended,
      EXT_draw_buffers,
      EXT_frag_depth,
      EXT_geometry_shader,
      EXT_shader_framebuffer_fetch,
      EXT_shader_texture_lod,
      EXT_YUV_target,
      NV_EGL_stream_consumer_external,
      NV_shader_framebuffer_fetch,
      OES_EGL_image_external,
      OES_EGL_image_external_essl3,
      OES_standard_derivatives,
      OES_texture_storage_multisample_2d_array,
      OES_texture_3D,
      OVR_multiview,
      OVR_multiview2,
      ANGLE_multi_draw,
      ANGLE_base_vertex_base_instance
  };
  
  enum TBehavior
  {
      EBhRequire,
      EBhEnable,
      EBhWarn,
      EBhDisable,
      EBhUndefined
  };
  
  const char *GetExtensionNameString(TExtension extension);
  TExtension GetExtensionByName(const char *extension);
  
  const char *GetBehaviorString(TBehavior b);
  
  // Mapping between extension id and behavior.
  typedef std::map<TExtension, TBehavior> TExtensionBehavior;
  
  bool IsExtensionEnabled(const TExtensionBehavior &extBehavior, TExtension extension);
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_EXTENSIONBEHAVIOR_H_
  

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