In swrastGetDrawableInfo, set *x and *y, not just *w and *h;
this fixes a crash later in drisw_update_tex_buffer when the
(formerly) uninitialized x and y values are used to construct
an address in a call to llvmpipe_transfer_map.
Fixes crash in Piglit test
"spec@egl 1.4@eglcreatepbuffersurface and then glclear"
(<piglit dir>/bin/egl-create-pbuffer-surface -auto)
that occurred intermittently, e.g. when the uninitialized x and y in
drisw_update_tex_buffer just happened to contain absurd non-zero values.
Signed-off-by: Ben Crocker <bcroc...@redhat.com>
---
src/egl/drivers/dri2/platform_x11.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/egl/drivers/dri2/platform_x11.c
b/src/egl/drivers/dri2/platform_x11.c
index 74d3a16..efb218c 100644
--- a/src/egl/drivers/dri2/platform_x11.c
+++ b/src/egl/drivers/dri2/platform_x11.c
@@ -111,7 +111,7 @@ swrastGetDrawableInfo(__DRIdrawable * draw,
xcb_get_geometry_reply_t *reply;
xcb_generic_error_t *error;
- *w = *h = 0;
+ *x = *y = *w = *h = 0;
cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
if (reply == NULL)
@@ -121,6 +121,8 @@ swrastGetDrawableInfo(__DRIdrawable * draw,
_eglLog(_EGL_WARNING, "error in xcb_get_geometry");
free(error);
} else {
+ *x = reply->x;
+ *y = reply->y;
*w = reply->width;
*h = reply->height;
}
--
2.7.4
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev
