On Thu, 2009-08-27 at 22:35 +0200, [email protected] wrote:
> >> > > While I have this working, it seems a little hacky and isn't widely
> >> > > supported (I have it working on 1 driver build for 1 bit of hardware).
> >> >
> >> > If you mean rendering to pixmaps isn't widely supported, that should be
> >> > getting better with DRI2.
> >>
> >> I hope so. Although even with DRI2, I think my Intel drivers have broken
> >> pixmap rendering at the moment (although it could be Qt which is doing
> >> something strange).
> >
> >What's your test? mesa/progs/xdemos/glxgears_pixmap seems to work fine
> >here with intel and radeon.
>
> I was testing with just Qt API, but I've also checked that
> mesa/progs/xdemos/glxpixmap also fails with BadDrawable errors if
> you change it to use a direct rendering context:
>
> - ctx = glXCreateContext( dpy, visinfo, NULL, False );
> + ctx = glXCreateContext( dpy, visinfo, NULL, True );
>
> However, after your suggestion, I also tried glxgears_pixmap
> which seems to work fine with a direct rendering context. I
> can only assume this is because it uses the FBConfig APIs
> rather than the older glX APIs (which Qt also uses)?
The Mesa libGL patch below fixes progs/xdemos/glxpixmap here with direct
rendering, does it help for Qt?
diff --git a/src/glx/x11/glxcmds.c b/src/glx/x11/glxcmds.c
index 2efe191..4f87bd8 100644
--- a/src/glx/x11/glxcmds.c
+++ b/src/glx/x11/glxcmds.c
@@ -880,6 +880,34 @@ glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis,
Pixmap pixmap)
req->glxpixmap = xid = XAllocID(dpy);
UnlockDisplay(dpy);
SyncHandle();
+
+#ifdef GLX_DIRECT_RENDERING
+ do {
+ /* FIXME: Maybe delay __DRIdrawable creation until the drawable
+ * is actually bound to a context... */
+
+ __GLXdisplayPrivate *const priv = __glXInitialize(dpy);
+ __GLXDRIdrawable *pdraw;
+ __GLXscreenConfigs *psc;
+ __GLcontextModes *modes;
+
+ psc = &priv->screenConfigs[vis->screen];
+ if (psc->driScreen == NULL)
+ break;
+ modes = _gl_context_modes_find_visual(psc->visuals, vis->visualid);
+ pdraw = psc->driScreen->createDrawable(psc, pixmap, req->glxpixmap,
modes);
+ if (pdraw == NULL) {
+ fprintf(stderr, "failed to create pixmap\n");
+ break;
+ }
+
+ if (__glxHashInsert(psc->drawHash, req->glxpixmap, pdraw)) {
+ (*pdraw->destroyDrawable) (pdraw);
+ return None; /* FIXME: Check what we're supposed to do
here... */
+ }
+ } while (0);
+#endif
+
return xid;
}
--
Earthling Michel Dänzer | http://www.vmware.com
Libre software enthusiast | Debian, X and DRI developer
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