qglframebufferobject.cpp File Reference

#include "qglframebufferobject.h"
#include "qglframebufferobject_p.h"
#include <qdebug.h>
#include <private/qgl_p.h>
#include <private/qfont_p.h>
#include <private/qpaintengineex_opengl2_p.h>
#include <private/qpaintengine_opengl_p.h>
#include <qlibrary.h>
#include <qimage.h>

Go to the source code of this file.

Macros
#define	QGL_FUNC_CONTEXT   const QGLContext *ctx = d_ptr->fbo_guard.context();
#define	QGL_FUNCP_CONTEXT   const QGLContext *ctx = fbo_guard.context();
#define	QT_CHECK_GLERROR()
#define	QT_RESET_GLERROR()

Functions
QImage	qt_gl_read_framebuffer (const QSize &, bool, bool)

Macro Definition Documentation

QGL_FUNC_CONTEXT

#define QGL_FUNC_CONTEXT   const QGLContext *ctx = d_ptr->fbo_guard.context();

Definition at line 64 of file qglframebufferobject.cpp.

Referenced by QGLFramebufferObject::bind(), QGLFramebufferObject::release(), and QGLFramebufferObject::~QGLFramebufferObject().

QGL_FUNCP_CONTEXT

#define QGL_FUNCP_CONTEXT   const QGLContext *ctx = fbo_guard.context();

Definition at line 65 of file qglframebufferobject.cpp.

Referenced by QGLFramebufferObjectPrivate::checkFramebufferStatus().

QT_CHECK_GLERROR

#define QT_CHECK_GLERROR

(

)

Value:

{                                                         \
    GLenum err = glGetError();                            \
    if (err != GL_NO_ERROR) {                             \
        qDebug("[%s line %d] GL Error: %d",               \
               __FILE__, __LINE__, (int)err);             \
    }                                                     \
}

Definition at line 72 of file qglframebufferobject.cpp.

Referenced by QGLFramebufferObjectPrivate::init().

QT_RESET_GLERROR

#define QT_RESET_GLERROR

(

)

Value:

{                                                         \
    while (glGetError() != GL_NO_ERROR) {}                \
}

Definition at line 68 of file qglframebufferobject.cpp.

Referenced by QGLFramebufferObjectPrivate::init().

Function Documentation

qt_gl_read_framebuffer()

QImage qt_gl_read_framebuffer	(	const QSize &	,
		bool	,
		bool
	)

Definition at line 1860 of file qgl.cpp.

Referenced by QGLFramebufferObject::toImage().

{
    QImage img(size, (alpha_format && include_alpha) ? QImage::Format_ARGB32_Premultiplied
                                                     : QImage::Format_RGB32);
    int w = size.width();
    int h = size.height();
    glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
    convertFromGLImage(img, w, h, alpha_format, include_alpha);
    return img;
}