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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QOPENGLFRAMEBUFFEROBJECT_H
#define QOPENGLFRAMEBUFFEROBJECT_H
#include <QtOpenGL/qtopenglglobal.h>
#include <QtGui/qopengl.h>
#include <QtGui/qpaintdevice.h>
#include <QtCore/qscopedpointer.h>
#if defined(Q_CLANG_QDOC)
#undef GLuint
typedef unsigned int GLuint;
#undef GLenum
typedef unsigned int GLenum;
#undef GL_TEXTURE_2D
#define GL_TEXTURE_2D 0x0DE1
#undef GLbitfield
typedef unsigned int GLbitfield;
#endif
QT_BEGIN_NAMESPACE
class QOpenGLFramebufferObjectPrivate;
class QOpenGLFramebufferObjectFormat;
class Q_OPENGL_EXPORT QOpenGLFramebufferObject
{
Q_DECLARE_PRIVATE(QOpenGLFramebufferObject)
public:
enum Attachment {
NoAttachment,
CombinedDepthStencil,
Depth
};
explicit QOpenGLFramebufferObject(const QSize &size, GLenum target = GL_TEXTURE_2D);
QOpenGLFramebufferObject(int width, int height, GLenum target = GL_TEXTURE_2D);
QOpenGLFramebufferObject(const QSize &size, Attachment attachment,
GLenum target = GL_TEXTURE_2D, GLenum internalFormat = 0);
QOpenGLFramebufferObject(int width, int height, Attachment attachment,
GLenum target = GL_TEXTURE_2D, GLenum internalFormat = 0);
QOpenGLFramebufferObject(const QSize &size, const QOpenGLFramebufferObjectFormat &format);
QOpenGLFramebufferObject(int width, int height, const QOpenGLFramebufferObjectFormat &format);
virtual ~QOpenGLFramebufferObject();
void addColorAttachment(const QSize &size, GLenum internalFormat = 0);
void addColorAttachment(int width, int height, GLenum internalFormat = 0);
QOpenGLFramebufferObjectFormat format() const;
bool isValid() const;
bool isBound() const;
bool bind();
bool release();
int width() const { return size().width(); }
int height() const { return size().height(); }
GLuint texture() const;
QList<GLuint> textures() const;
GLuint takeTexture();
GLuint takeTexture(int colorAttachmentIndex);
QSize size() const;
QList<QSize> sizes() const;
QImage toImage(bool flipped = true) const;
QImage toImage(bool flipped, int colorAttachmentIndex) const;
Attachment attachment() const;
void setAttachment(Attachment attachment);
GLuint handle() const;
static bool bindDefault();
static bool hasOpenGLFramebufferObjects();
static bool hasOpenGLFramebufferBlit();
enum FramebufferRestorePolicy {
DontRestoreFramebufferBinding,
RestoreFramebufferBindingToDefault,
RestoreFrameBufferBinding
};
static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect,
QOpenGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers,
GLenum filter,
int readColorAttachmentIndex,
int drawColorAttachmentIndex,
FramebufferRestorePolicy restorePolicy);
static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect,
QOpenGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers,
GLenum filter,
int readColorAttachmentIndex,
int drawColorAttachmentIndex);
static void blitFramebuffer(QOpenGLFramebufferObject *target, const QRect &targetRect,
QOpenGLFramebufferObject *source, const QRect &sourceRect,
GLbitfield buffers = GL_COLOR_BUFFER_BIT,
GLenum filter = GL_NEAREST);
static void blitFramebuffer(QOpenGLFramebufferObject *target,
QOpenGLFramebufferObject *source,
GLbitfield buffers = GL_COLOR_BUFFER_BIT,
GLenum filter = GL_NEAREST);
private:
Q_DISABLE_COPY(QOpenGLFramebufferObject)
QScopedPointer<QOpenGLFramebufferObjectPrivate> d_ptr;
friend class QOpenGLPaintDevice;
friend class QOpenGLFBOGLPaintDevice;
};
class QOpenGLFramebufferObjectFormatPrivate;
class Q_OPENGL_EXPORT QOpenGLFramebufferObjectFormat
{
public:
QOpenGLFramebufferObjectFormat();
QOpenGLFramebufferObjectFormat(const QOpenGLFramebufferObjectFormat &other);
QOpenGLFramebufferObjectFormat &operator=(const QOpenGLFramebufferObjectFormat &other);
~QOpenGLFramebufferObjectFormat();
void setSamples(int samples);
int samples() const;
void setMipmap(bool enabled);
bool mipmap() const;
void setAttachment(QOpenGLFramebufferObject::Attachment attachment);
QOpenGLFramebufferObject::Attachment attachment() const;
void setTextureTarget(GLenum target);
GLenum textureTarget() const;
void setInternalTextureFormat(GLenum internalTextureFormat);
GLenum internalTextureFormat() const;
bool operator==(const QOpenGLFramebufferObjectFormat& other) const;
bool operator!=(const QOpenGLFramebufferObjectFormat& other) const;
private:
QOpenGLFramebufferObjectFormatPrivate *d;
void detach();
};
QT_END_NAMESPACE
#endif // QOPENGLFRAMEBUFFEROBJECT_H
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