WebGLRenderbuffer.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef WEBGL_RENDERBUFFER_H_

#define WEBGL_RENDERBUFFER_H_

#include "CacheInvalidator.h"

#include "WebGLObjectModel.h"

#include "WebGLStrongTypes.h"

#include "WebGLTexture.h"

namespace mozilla {

namespace webgl {

struct FormatUsageInfo;

class WebGLRenderbuffer final : public WebGLContextBoundObject,

                                public WebGLRectangleObject,

                                public CacheInvalidator {

  friend class WebGLFramebuffer;

  friend class WebGLFBAttachPoint;

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(WebGLRenderbuffer, override)

 public:

  const GLuint mPrimaryRB;

 protected:

  const bool mEmulatePackedDepthStencil;

  GLuint mSecondaryRB;

  webgl::ImageInfo mImageInfo;

 public:

  explicit WebGLRenderbuffer(WebGLContext* webgl);

  const auto& ImageInfo() const { return mImageInfo; }

  void RenderbufferStorage(uint32_t samples, GLenum internalFormat,

                           uint32_t width, uint32_t height);

  // Only handles a subset of `pname`s.

  GLint GetRenderbufferParameter(RBParam pname) const;

  auto MemoryUsage() const { return mImageInfo.MemoryUsage(); }

 protected:

  ~WebGLRenderbuffer() override;

  void DoFramebufferRenderbuffer(GLenum attachment) const;

  GLenum DoRenderbufferStorage(uint32_t samples,

                               const webgl::FormatUsageInfo* format,

                               uint32_t width, uint32_t height);

};

}  // namespace mozilla

#endif  // WEBGL_RENDERBUFFER_H_