kc3-lang/angle/src/libANGLE/renderer/gl/ClearMultiviewGL.h

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• Hash : 7d64c486
  Author :
  Date : 2019-03-12T14:27:40
  

  GL_ANGLE_multiview has been renamed to GL_OVR_multiview2.
  
  changes include:
  1) GL_OVR_multiview to GL_OVR_multiview2 extension directive change
  2) Removal of all references to side by side. We no longer support multiple views in a single 2DTexture. Only 2DTextureArray's are supported
  3) WebGL 2 (ES3) is required for multiview
  
  Bug: angleproject:3341
  Change-Id: Ie0c1d21d7610f8feebdb2e4d01c6947f57e69328
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552023
  Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/gl/ClearMultiviewGL.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.
  //
  // ClearMultiviewGL:
  //   A helper for clearing multiview side-by-side and layered framebuffers.
  //
  
  #ifndef LIBANGLE_RENDERER_GL_CLEARMULTIVIEWGL_H_
  #define LIBANGLE_RENDERER_GL_CLEARMULTIVIEWGL_H_
  
  #include "angle_gl.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/angletypes.h"
  
  namespace gl
  {
  class FramebufferState;
  }  // namespace gl
  
  namespace rx
  {
  class FunctionsGL;
  class StateManagerGL;
  
  class ClearMultiviewGL : angle::NonCopyable
  {
    public:
      // Enum containing the different types of Clear* commands.
      enum class ClearCommandType
      {
          Clear,
          ClearBufferfv,
          ClearBufferuiv,
          ClearBufferiv,
          ClearBufferfi
      };
  
    public:
      ClearMultiviewGL(const FunctionsGL *functions, StateManagerGL *stateManager);
      ~ClearMultiviewGL();
  
      ClearMultiviewGL(const ClearMultiviewGL &rht) = delete;
      ClearMultiviewGL &operator=(const ClearMultiviewGL &rht) = delete;
      ClearMultiviewGL(ClearMultiviewGL &&rht)                 = delete;
      ClearMultiviewGL &operator=(ClearMultiviewGL &&rht) = delete;
  
      void clearMultiviewFBO(const gl::FramebufferState &state,
                             const gl::Rectangle &scissorBase,
                             ClearCommandType clearCommandType,
                             GLbitfield mask,
                             GLenum buffer,
                             GLint drawbuffer,
                             const uint8_t *values,
                             GLfloat depth,
                             GLint stencil);
      void initializeResources();
  
    private:
      void attachTextures(const gl::FramebufferState &state, int layer);
      void detachTextures(const gl::FramebufferState &state);
      void clearLayeredFBO(const gl::FramebufferState &state,
                           ClearCommandType clearCommandType,
                           GLbitfield mask,
                           GLenum buffer,
                           GLint drawbuffer,
                           const uint8_t *values,
                           GLfloat depth,
                           GLint stencil);
      void genericClear(ClearCommandType clearCommandType,
                        GLbitfield mask,
                        GLenum buffer,
                        GLint drawbuffer,
                        const uint8_t *values,
                        GLfloat depth,
                        GLint stencil);
  
      const FunctionsGL *mFunctions;
      StateManagerGL *mStateManager;
  
      GLuint mFramebuffer;
  };
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_GL_CLEARMULTIVIEWGL_H_

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