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//
// Copyright (c) 2002-2013 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.
//
// Framebuffer.h: Defines the gl::Framebuffer class. Implements GL framebuffer
// objects and related functionality. [OpenGL ES 2.0.24] section 4.4 page 105.
#ifndef LIBANGLE_FRAMEBUFFER_H_
#define LIBANGLE_FRAMEBUFFER_H_
#include <vector>
#include "common/angleutils.h"
#include "libANGLE/Constants.h"
#include "libANGLE/Error.h"
#include "libANGLE/FramebufferAttachment.h"
#include "libANGLE/RefCountObject.h"
namespace rx
{
class ImplFactory;
class FramebufferImpl;
class RenderbufferImpl;
struct Workarounds;
}
namespace egl
{
class Surface;
}
namespace gl
{
class Renderbuffer;
class State;
class Texture;
class TextureCapsMap;
struct Caps;
struct Data;
struct Extensions;
struct ImageIndex;
struct Rectangle;
class Framebuffer
{
public:
class Data final : angle::NonCopyable
{
public:
explicit Data(const Caps &caps);
~Data();
const FramebufferAttachment *getReadAttachment() const;
const FramebufferAttachment *getFirstColorAttachment() const;
const FramebufferAttachment *getDepthOrStencilAttachment() const;
const FramebufferAttachment *getColorAttachment(unsigned int colorAttachment) const;
const FramebufferAttachment *getDepthAttachment() const;
const FramebufferAttachment *getStencilAttachment() const;
const FramebufferAttachment *getDepthStencilAttachment() const;
const std::vector<GLenum> &getDrawBufferStates() const { return mDrawBufferStates; }
const std::vector<FramebufferAttachment> &getColorAttachments() const { return mColorAttachments; }
private:
friend class Framebuffer;
std::vector<FramebufferAttachment> mColorAttachments;
FramebufferAttachment mDepthAttachment;
FramebufferAttachment mStencilAttachment;
std::vector<GLenum> mDrawBufferStates;
GLenum mReadBufferState;
};
Framebuffer(const Caps &caps, rx::ImplFactory *factory, GLuint id);
virtual ~Framebuffer();
const rx::FramebufferImpl *getImplementation() const { return mImpl; }
rx::FramebufferImpl *getImplementation() { return mImpl; }
GLuint id() const { return mId; }
void setAttachment(GLenum type,
GLenum binding,
const ImageIndex &textureIndex,
FramebufferAttachmentObject *resource);
void resetAttachment(GLenum binding);
void detachTexture(GLuint texture);
void detachRenderbuffer(GLuint renderbuffer);
const FramebufferAttachment *getColorbuffer(unsigned int colorAttachment) const;
const FramebufferAttachment *getDepthbuffer() const;
const FramebufferAttachment *getStencilbuffer() const;
const FramebufferAttachment *getDepthStencilBuffer() const;
const FramebufferAttachment *getDepthOrStencilbuffer() const;
const FramebufferAttachment *getReadColorbuffer() const;
GLenum getReadColorbufferType() const;
const FramebufferAttachment *getFirstColorbuffer() const;
const FramebufferAttachment *getAttachment(GLenum attachment) const;
GLenum getDrawBufferState(unsigned int colorAttachment) const;
void setDrawBuffers(size_t count, const GLenum *buffers);
GLenum getReadBufferState() const;
void setReadBuffer(GLenum buffer);
bool isEnabledColorAttachment(unsigned int colorAttachment) const;
bool hasEnabledColorAttachment() const;
bool hasStencil() const;
int getSamples(const gl::Data &data) const;
bool usingExtendedDrawBuffers() const;
GLenum checkStatus(const gl::Data &data) const;
bool hasValidDepthStencil() const;
Error invalidate(size_t count, const GLenum *attachments);
Error invalidateSub(size_t count, const GLenum *attachments, const gl::Rectangle &area);
Error clear(const gl::Data &data, GLbitfield mask);
Error clearBufferfv(const State &state, GLenum buffer, GLint drawbuffer, const GLfloat *values);
Error clearBufferuiv(const State &state, GLenum buffer, GLint drawbuffer, const GLuint *values);
Error clearBufferiv(const State &state, GLenum buffer, GLint drawbuffer, const GLint *values);
Error clearBufferfi(const State &state, GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
GLenum getImplementationColorReadFormat() const;
GLenum getImplementationColorReadType() const;
Error readPixels(const gl::State &state, const gl::Rectangle &area, GLenum format, GLenum type, GLvoid *pixels) const;
Error blit(const gl::State &state, const gl::Rectangle &sourceArea, const gl::Rectangle &destArea,
GLbitfield mask, GLenum filter, const gl::Framebuffer *sourceFramebuffer);
protected:
void detachResourceById(GLenum resourceType, GLuint resourceId);
Data mData;
rx::FramebufferImpl *mImpl;
GLuint mId;
};
}
#endif // LIBANGLE_FRAMEBUFFER_H_
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