void QDri2Context::swapBuffers()
{
Q_D(QDri2Context);
xcb_rectangle_t rectangle;
rectangle.x = 0;
rectangle.y = 0;
rectangle.width = d->qXcbWindow->widget()->geometry().width();
rectangle.height = d->qXcbWindow->widget()->geometry().height();
xcb_xfixes_region_t xfixesRegion = xcb_generate_id(d->xcbConnection());
xcb_xfixes_create_region(d->xcbConnection(), xfixesRegion,
1, &rectangle);
xcb_dri2_copy_region_cookie_t cookie = xcb_dri2_copy_region_unchecked(d->xcbConnection(),
d->qXcbWindow->window(),
xfixesRegion,
XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT);
xcb_dri2_copy_region_reply_t *reply = xcb_dri2_copy_region_reply(d->xcbConnection(),cookie,NULL);
//cleanup
delete reply;
xcb_xfixes_destroy_region(d->xcbConnection(), xfixesRegion);
}
static EGLBoolean
dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
_EGLSurface *draw, xcb_xfixes_region_t region)
{
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
enum xcb_dri2_attachment_t render_attachment;
xcb_dri2_copy_region_cookie_t cookie;
/* No-op for a pixmap or pbuffer surface */
if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
return EGL_TRUE;
if (dri2_dpy->flush)
(*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
if (dri2_surf->have_fake_front)
render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
else
render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
dri2_surf->drawable,
region,
XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
render_attachment);
free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
return EGL_TRUE;
}
static EGLBoolean
dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
_EGLSurface *draw, xcb_xfixes_region_t region)
{
struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
_EGLContext *ctx;
enum xcb_dri2_attachment_t render_attachment;
xcb_dri2_copy_region_cookie_t cookie;
if (dri2_drv->glFlush) {
ctx = _eglGetCurrentContext();
if (ctx && ctx->DrawSurface == &dri2_surf->base)
dri2_drv->glFlush();
}
(*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
#if 0
/* FIXME: Add support for dri swapbuffers, that'll give us swap
* interval and page flipping (at least for fullscreen windows) as
* well as the page flip event. Unless surface->SwapBehavior is
* EGL_BUFFER_PRESERVED. */
#if __DRI2_FLUSH_VERSION >= 2
if (pdraw->psc->f)
(*pdraw->psc->f->flushInvalidate)(pdraw->driDrawable);
#endif
#endif
if (dri2_surf->have_fake_front)
render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
else
render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
dri2_surf->drawable,
region,
XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
render_attachment);
free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
return EGL_TRUE;
}