In st_renderbuffer_alloc_storage, we avoid allocating storage for
zero-sized buffers, leading to this pointer being NULL. We already
take care to avoid dereferencing these pointers for color-buffers,
but not for depth/stencil-buffers.
So let's thread a bit more carefully here.
This avoids a crash while running Piglit's glx/glx-visuals-stencil
test, both on virgl and r600g.
Signed-off-by: Erik Faye-Lund <erik.faye-l...@collabora.com>
---
src/mesa/state_tracker/st_atom_framebuffer.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/mesa/state_tracker/st_atom_framebuffer.c
b/src/mesa/state_tracker/st_atom_framebuffer.c
index 807c312a5d..a0dd0d1f64 100644
--- a/src/mesa/state_tracker/st_atom_framebuffer.c
+++ b/src/mesa/state_tracker/st_atom_framebuffer.c
@@ -181,7 +181,8 @@ st_update_framebuffer_state( struct st_context *st )
st_update_renderbuffer_surface(st, strb);
}
framebuffer.zsbuf = strb->surface;
- update_framebuffer_size(&framebuffer, strb->surface);
+ if (strb->surface)
+ update_framebuffer_size(&framebuffer, strb->surface);
}
else
framebuffer.zsbuf = NULL;
--
2.17.1
_______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev
