[Mesa-dev] [PATCH] st/mesa: fix crash with default TBO.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

(this is my hacky attempt at fixing the problem previously described,
maybe its correct).

The formats test triggers this once it finishes.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/mesa/state_tracker/st_atom_texture.c | 6 ++++--
 src/mesa/state_tracker/st_cb_texture.c   | 9 +++++++++
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/mesa/state_tracker/st_atom_texture.c b/src/mesa/state_tracker/st_atom_texture.c
index dba1d82..e6b0c9e 100644
--- a/src/mesa/state_tracker/st_atom_texture.c
+++ b/src/mesa/state_tracker/st_atom_texture.c
@@ -214,7 +214,9 @@ update_single_texture(struct st_context *st,
    }
 
    /* Determine the format of the texture sampler view */
-   st_view_format = stObj->pt->format;
+   st_view_format = 0;
+   if (stObj->pt)
+      st_view_format = stObj->pt->format;
 
    {
       gl_format texFormat;
@@ -238,7 +240,7 @@ update_single_texture(struct st_context *st,
 	 firstImageFormat = st_mesa_format_to_pipe_format(linearFormat);
       }
 
-      if (firstImageFormat != stObj->pt->format)
+      if (firstImageFormat != st_view_format)
 	 st_view_format = firstImageFormat;
    }
 
diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index b5c1f1f..eccac68 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -1329,6 +1329,15 @@ st_finalize_texture(struct gl_context *ctx,
    if (tObj->Target == GL_TEXTURE_BUFFER) {
       struct st_buffer_object *st_obj = st_buffer_object(tObj->BufferObject);
 
+      if (!st_obj) {
+         pipe_resource_reference(&stObj->pt, NULL);
+         pipe_sampler_view_release(st->pipe, &stObj->sampler_view);
+         stObj->width0 = 0;
+         stObj->height0 = 0;
+         stObj->depth0 = 0;
+         return GL_TRUE;
+      }
+
       if (st_obj->buffer != stObj->pt) {
          pipe_resource_reference(&stObj->pt, st_obj->buffer);
          pipe_sampler_view_release(st->pipe, &stObj->sampler_view);
-- 
1.8.0.2