From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 5 Oct 2009 05:51:47 +0000 (+1000)
Subject: st/dri: avoid segfault if we can't get a pixmap's buffers
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d47de5054091a5d1fa9b19687ac80bcdc39a5f8f;p=mesa.git

st/dri: avoid segfault if we can't get a pixmap's buffers

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---

diff --git a/src/gallium/state_trackers/dri/dri_drawable.c b/src/gallium/state_trackers/dri/dri_drawable.c
index 6aafb384ef5..3f8dc8df75e 100644
--- a/src/gallium/state_trackers/dri/dri_drawable.c
+++ b/src/gallium/state_trackers/dri/dri_drawable.c
@@ -249,6 +249,9 @@ void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
    dri_get_buffers(drawable->dPriv);
    st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
 
+   if (!ps)
+      return;
+
    st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
                            ST_TEXTURE_RECT, 0, drawable->color_format);
 }