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//
// Copyright 2002 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.
//
// Renderbuffer.h: Defines the renderer-agnostic container class gl::Renderbuffer.
// Implements GL renderbuffer objects and related functionality.
// [OpenGL ES 2.0.24] section 4.4.3 page 108.
#ifndef LIBANGLE_RENDERBUFFER_H_
#define LIBANGLE_RENDERBUFFER_H_
#include "angle_gl.h"
#include "common/angleutils.h"
#include "libANGLE/Debug.h"
#include "libANGLE/Error.h"
#include "libANGLE/FramebufferAttachment.h"
#include "libANGLE/Image.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/RenderbufferImpl.h"
namespace rx
{
class GLImplFactory;
} // namespace rx
namespace gl
{
// A GL renderbuffer object is usually used as a depth or stencil buffer attachment
// for a framebuffer object. The renderbuffer itself is a distinct GL object, see
// FramebufferAttachment and Framebuffer for how they are applied to an FBO via an
// attachment point.
class RenderbufferState final : angle::NonCopyable
{
public:
RenderbufferState();
~RenderbufferState();
GLsizei getWidth() const;
GLsizei getHeight() const;
const Format &getFormat() const;
GLsizei getSamples() const;
MultisamplingMode getMultisamplingMode() const;
InitState getInitState() const;
private:
friend class Renderbuffer;
void update(GLsizei width,
GLsizei height,
const Format &format,
GLsizei samples,
MultisamplingMode multisamplingMode,
InitState initState);
GLsizei mWidth;
GLsizei mHeight;
Format mFormat;
GLsizei mSamples;
MultisamplingMode mMultisamplingMode;
// For robust resource init.
InitState mInitState;
};
class Renderbuffer final : public RefCountObject<RenderbufferID>,
public egl::ImageSibling,
public LabeledObject
{
public:
Renderbuffer(rx::GLImplFactory *implFactory, RenderbufferID id);
~Renderbuffer() override;
void onDestroy(const Context *context) override;
void setLabel(const Context *context, const std::string &label) override;
const std::string &getLabel() const override;
angle::Result setStorage(const Context *context,
GLenum internalformat,
GLsizei width,
GLsizei height);
angle::Result setStorageMultisample(const Context *context,
GLsizei samples,
GLenum internalformat,
GLsizei width,
GLsizei height,
MultisamplingMode mode);
angle::Result setStorageEGLImageTarget(const Context *context, egl::Image *imageTarget);
angle::Result copyRenderbufferSubData(Context *context,
const gl::Renderbuffer *srcBuffer,
GLint srcLevel,
GLint srcX,
GLint srcY,
GLint srcZ,
GLint dstLevel,
GLint dstX,
GLint dstY,
GLint dstZ,
GLsizei srcWidth,
GLsizei srcHeight,
GLsizei srcDepth);
angle::Result copyTextureSubData(Context *context,
const gl::Texture *srcTexture,
GLint srcLevel,
GLint srcX,
GLint srcY,
GLint srcZ,
GLint dstLevel,
GLint dstX,
GLint dstY,
GLint dstZ,
GLsizei srcWidth,
GLsizei srcHeight,
GLsizei srcDepth);
rx::RenderbufferImpl *getImplementation() const;
GLsizei getWidth() const;
GLsizei getHeight() const;
const Format &getFormat() const;
GLsizei getSamples() const;
MultisamplingMode getMultisamplingMode() const;
GLuint getRedSize() const;
GLuint getGreenSize() const;
GLuint getBlueSize() const;
GLuint getAlphaSize() const;
GLuint getDepthSize() const;
GLuint getStencilSize() const;
const RenderbufferState &getState() const;
GLint getMemorySize() const;
// FramebufferAttachmentObject Impl
Extents getAttachmentSize(const ImageIndex &imageIndex) const override;
Format getAttachmentFormat(GLenum binding, const ImageIndex &imageIndex) const override;
GLsizei getAttachmentSamples(const ImageIndex &imageIndex) const override;
bool isRenderable(const Context *context,
GLenum binding,
const ImageIndex &imageIndex) const override;
void onAttach(const Context *context, rx::Serial framebufferSerial) override;
void onDetach(const Context *context, rx::Serial framebufferSerial) override;
GLuint getId() const override;
InitState initState(const ImageIndex &imageIndex) const override;
void setInitState(const ImageIndex &imageIndex, InitState initState) override;
GLenum getImplementationColorReadFormat(const Context *context) const;
GLenum getImplementationColorReadType(const Context *context) const;
// We pass the pack buffer and state explicitly so they can be overridden during capture.
angle::Result getRenderbufferImage(const Context *context,
const PixelPackState &packState,
Buffer *packBuffer,
GLenum format,
GLenum type,
void *pixels) const;
private:
// ObserverInterface implementation.
void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override;
rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const override;
RenderbufferState mState;
std::unique_ptr<rx::RenderbufferImpl> mImplementation;
std::string mLabel;
angle::ObserverBinding mImplObserverBinding;
};
} // namespace gl
#endif // LIBANGLE_RENDERBUFFER_H_
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