qpixmapdata_gl.cpp File Reference

#include "qpixmap.h"
#include "qglframebufferobject.h"
#include <private/qpaintengine_raster_p.h>
#include "qpixmapdata_gl_p.h"
#include <private/qgl_p.h>
#include <private/qdrawhelper_p.h>
#include <private/qimage_p.h>
#include <private/qfont_p.h>
#include <private/qpaintengineex_opengl2_p.h>
#include <qdesktopwidget.h>
#include <qfile.h>
#include <qimagereader.h>
#include <qbuffer.h>

Go to the source code of this file.

Classes
struct	TextureBuffer

Functions
static int	areaDiff (const QSize &size, const QGLFramebufferObject *fbo)
static QSize	maybeRoundToNextPowerOfTwo (const QSize &sz)
QGLFramebufferObjectPool *	qgl_fbo_pool ()
QRgb	qt_gl_convertToGLFormat (QRgb src_pixel, GLenum texture_format)
QImage	qt_gl_read_texture (const QSize &size, bool alpha_format, bool include_alpha)
Q_OPENGL_EXPORT const QGLContext *	qt_gl_share_context ()
int	qt_next_power_of_two (int v)

Variables
static int	qt_gl_pixmap_serial = 0

Function Documentation

areaDiff()

static int areaDiff ( const QSize &  size, const QGLFramebufferObject *  fbo  )

inlinestatic

Definition at line 81 of file qpixmapdata_gl.cpp.

Referenced by QGLFramebufferObjectPool::acquire().

{
    return qAbs(size.width() * size.height() - fbo->width() * fbo->height());
}

maybeRoundToNextPowerOfTwo()

static QSize maybeRoundToNextPowerOfTwo ( const QSize &  sz )

inlinestatic

Definition at line 88 of file qpixmapdata_gl.cpp.

Referenced by QGLFramebufferObjectPool::acquire().

{
#ifdef QT_OPENGL_ES_2
    QSize rounded(qt_next_power_of_two(sz.width()), qt_next_power_of_two(sz.height()));
    if (rounded.width() * rounded.height() < 1.20 * sz.width() * sz.height())
        return rounded;
#endif
    return sz;
}

qgl_fbo_pool()

QGLFramebufferObjectPool* qgl_fbo_pool

(

)

Definition at line 663 of file qpixmapdata_gl.cpp.

Referenced by QGLPixmapGLPaintDevice::endPaint(), QGLWindowSurface::flush(), and QGLPixmapData::paintEngine().

{
    return _qgl_fbo_pool();
}

qt_gl_convertToGLFormat()

QRgb qt_gl_convertToGLFormat	(	QRgb	src_pixel,
		GLenum	texture_format
	)

Definition at line 2281 of file qgl.cpp.

Referenced by QGLPixmapData::bind(), and QGLPixmapData::paintEngine().

{
    return qt_gl_convertToGLFormatHelper(src_pixel, texture_format);
}

qt_gl_read_texture()

QImage qt_gl_read_texture	(	const QSize &	size,
		bool	alpha_format,
		bool	include_alpha
	)

Definition at line 1871 of file qgl.cpp.

Referenced by QGLPixmapData::fillImage(), and QGLPixmapData::toImage().

{
    QImage img(size, alpha_format ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32);
    int w = size.width();
    int h = size.height();
#if !defined(QT_OPENGL_ES_2) && !defined(QT_OPENGL_ES_1)
    //### glGetTexImage not in GL ES 2.0, need to do something else here!
    glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, img.bits());
#endif
    convertFromGLImage(img, w, h, alpha_format, include_alpha);
    return img;
}

qt_gl_share_context()

Q_OPENGL_EXPORT const QGLContext* qt_gl_share_context

(

)

Definition at line 284 of file qwindowsurface_gl.cpp.

Referenced by QGLPixmapData::copy(), QGLPixmapData::copyBackFromRenderFbo(), QGLPixmapData::createPixmapForImage(), QGLPixmapData::ensureCreated(), QGLPixmapData::fromData(), QGLPixmapData::fromFile(), QGLWindowSurface::hijackWindow(), QGLPixmapData::isValidContext(), QGLPixmapData::paintEngine(), QGLPixmapData::resize(), QGLPixmapData::toImage(), QGLPixmapData::~QGLPixmapData(), and QGLWindowSurface::~QGLWindowSurface().

{
    QGLWidget *widget = qt_gl_share_widget();
    if (widget)
        return widget->context();
    return 0;
}

qt_next_power_of_two()

int qt_next_power_of_two

(

int

v

)

Definition at line 1886 of file qgl.cpp.

Referenced by areaDiff(), and maybeRoundToNextPowerOfTwo().

{
    v--;
    v |= v >> 1;
    v |= v >> 2;
    v |= v >> 4;
    v |= v >> 8;
    v |= v >> 16;
    ++v;
    return v;
}

Variable Documentation

qt_gl_pixmap_serial

int qt_gl_pixmap_serial = 0

static

Definition at line 252 of file qpixmapdata_gl.cpp.

Referenced by QGLPixmapData::createPixmapForImage(), QGLPixmapData::QGLPixmapData(), and QGLPixmapData::resize().