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//
// Copyright (c) 2014 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.
//
// FramebufferAttachment.h: Defines the wrapper class gl::FramebufferAttachment, as well as the
// objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
#ifndef LIBGLESV2_FRAMEBUFFERATTACHMENT_H_
#define LIBGLESV2_FRAMEBUFFERATTACHMENT_H_
#include "common/angleutils.h"
#include "common/RefCountObject.h"
#include "Texture.h"
#include "angle_gl.h"
namespace gl
{
class Renderbuffer;
// FramebufferAttachment implements a GL framebuffer attachment.
// Attachments are "light" containers, which store pointers to ref-counted GL objects.
// We support GL texture (2D/3D/Cube/2D array) and renderbuffer object attachments.
// Note: Our old naming scheme used the term "Renderbuffer" for both GL renderbuffers and for
// framebuffer attachments, which confused their usage.
class FramebufferAttachment
{
public:
explicit FramebufferAttachment(GLenum binding);
virtual ~FramebufferAttachment();
// Helper methods
GLuint getRedSize() const;
GLuint getGreenSize() const;
GLuint getBlueSize() const;
GLuint getAlphaSize() const;
GLuint getDepthSize() const;
GLuint getStencilSize() const;
GLenum getComponentType() const;
GLenum getColorEncoding() const;
bool isTexture() const;
bool isTextureWithId(GLuint textureId) const { return isTexture() && id() == textureId; }
bool isRenderbufferWithId(GLuint renderbufferId) const { return !isTexture() && id() == renderbufferId; }
GLenum getBinding() const { return mBinding; }
// Child class interface
virtual GLsizei getWidth() const = 0;
virtual GLsizei getHeight() const = 0;
virtual GLenum getInternalFormat() const = 0;
virtual GLenum getActualFormat() const = 0;
virtual GLsizei getSamples() const = 0;
virtual GLuint id() const = 0;
virtual GLenum type() const = 0;
virtual GLint mipLevel() const = 0;
virtual GLint layer() const = 0;
virtual Texture *getTexture() = 0;
virtual const ImageIndex *getTextureImageIndex() const = 0;
virtual Renderbuffer *getRenderbuffer() = 0;
private:
DISALLOW_COPY_AND_ASSIGN(FramebufferAttachment);
GLenum mBinding;
};
class TextureAttachment : public FramebufferAttachment
{
public:
TextureAttachment(GLenum binding, Texture *texture, const ImageIndex &index);
virtual ~TextureAttachment();
virtual GLsizei getSamples() const;
virtual GLuint id() const;
virtual GLsizei getWidth() const;
virtual GLsizei getHeight() const;
virtual GLenum getInternalFormat() const;
virtual GLenum getActualFormat() const;
virtual GLenum type() const;
virtual GLint mipLevel() const;
virtual GLint layer() const;
virtual Texture *getTexture();
virtual const ImageIndex *getTextureImageIndex() const;
virtual Renderbuffer *getRenderbuffer();
private:
DISALLOW_COPY_AND_ASSIGN(TextureAttachment);
BindingPointer<Texture> mTexture;
ImageIndex mIndex;
};
class RenderbufferAttachment : public FramebufferAttachment
{
public:
RenderbufferAttachment(GLenum binding, Renderbuffer *renderbuffer);
virtual ~RenderbufferAttachment();
virtual GLsizei getWidth() const;
virtual GLsizei getHeight() const;
virtual GLenum getInternalFormat() const;
virtual GLenum getActualFormat() const;
virtual GLsizei getSamples() const;
virtual GLuint id() const;
virtual GLenum type() const;
virtual GLint mipLevel() const;
virtual GLint layer() const;
virtual Texture *getTexture();
virtual const ImageIndex *getTextureImageIndex() const;
virtual Renderbuffer *getRenderbuffer();
private:
DISALLOW_COPY_AND_ASSIGN(RenderbufferAttachment);
BindingPointer<Renderbuffer> mRenderbuffer;
};
}
#endif // LIBGLESV2_FRAMEBUFFERATTACHMENT_H_
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