dom/canvas/WebGLRenderbuffer.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef WEBGL_RENDERBUFFER_H_
   7 #define WEBGL_RENDERBUFFER_H_
   8
   9 #include "CacheInvalidator.h"
  10 #include "WebGLObjectModel.h"
  11 #include "WebGLStrongTypes.h"
  12 #include "WebGLTexture.h"
  13
  14 namespace mozilla {
  15 namespace webgl {
  16 struct FormatUsageInfo;
  17 }
  18
  19 class WebGLRenderbuffer final : public WebGLContextBoundObject,
  20                                 public WebGLRectangleObject,
  21                                 public CacheInvalidator {
  22   friend class WebGLFramebuffer;
  23   friend class WebGLFBAttachPoint;
  24
  25   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLRenderbuffer, override)
  26
  27  public:
  28   const GLuint mPrimaryRB;
  29
  30  protected:
  31   const bool mEmulatePackedDepthStencil;
  32   GLuint mSecondaryRB;
  33   webgl::ImageInfo mImageInfo;
  34
  35  public:
  36   explicit WebGLRenderbuffer(WebGLContext* webgl);
  37
  38   const auto& ImageInfo() const { return mImageInfo; }
  39
  40   void RenderbufferStorage(uint32_t samples, GLenum internalFormat,
  41                            uint32_t width, uint32_t height);
  42   // Only handles a subset of `pname`s.
  43   GLint GetRenderbufferParameter(RBParam pname) const;
  44
  45   auto MemoryUsage() const { return mImageInfo.MemoryUsage(); }
  46
  47  protected:
  48   ~WebGLRenderbuffer() override;
  49
  50   void DoFramebufferRenderbuffer(GLenum attachment) const;
  51   GLenum DoRenderbufferStorage(uint32_t samples,
  52                                const webgl::FormatUsageInfo* format,
  53                                uint32_t width, uint32_t height);
  54 };
  55
  56 }  // namespace mozilla
  57
  58 #endif  // WEBGL_RENDERBUFFER_H_