http://bugs.freedesktop.org/show_bug.cgi?id=24226
Summary: libGL tries using direct mode when it should use
indirect (only tries indirect if forced)
Product: Mesa
Version: 7.5
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: GLX
AssignedTo: mesa3d-dev@lists.sourceforge.net
ReportedBy: jerem...@freedesktop.org
If I ssh to a remote box, and I try to run 'glxinfo' on the remote system, it
fails unless I explicitly force indirect mode via LIBGL_ALWAYS_INDIRECT.
The problem is that without LIBGL_ALWAYS_INDIRECT set, glx_direct gets set to
true in glxext.c:
---
glx_direct = (getenv("LIBGL_ALWAYS_INDIRECT") == NULL);
glx_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
/*
** Initialize the direct rendering per display data and functions.
** Note: This _must_ be done before calling any other DRI routines
** (e.g., those called in AllocAndFetchScreenConfigs).
*/
if (glx_direct && glx_accel) {
dpyPriv->dri2Display = dri2CreateDisplay(dpy);
dpyPriv->driDisplay = driCreateDisplay(dpy);
}
if (glx_direct)
dpyPriv->driswDisplay = driswCreateDisplay(dpy);
---
Then in AllocAndFetchScreenConfigs(), we get our visuals and fbconfigs via:
getVisualConfigs(dpy, priv, i);
getFBConfigs(dpy, priv, i);
but then they get thrashed by:
if (psc->driScreen == NULL && priv->driswDisplay)
psc->driScreen = (*priv->driswDisplay->createScreen) (psc, i, priv);
which is driCreateScreen in drisw_glx.c and ends up doing:
psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
which results in psc->configs being set to NULL which is causing
GetGLXPrivScreenConfig to return GLX_BAD_VISUAL and thus causing glxinfo to
bail.
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