gallium: temporary check for > 65535 vertices

src/gallium/auxiliary/draw/draw_pipe_vbuf.c

@@ -399,6 +399,8 @@ vbuf_alloc_vertices( struct vbuf_stage *vbuf )
     * and it will flush itself if necessary to do so.  If this does
     * fail, we are basically without usable hardware.
     */
+   assert(vbuf->max_vertices < 65536);
+
    vbuf->vertices = (uint *) vbuf->render->allocate_vertices(vbuf->render,
 							     (ushort) vbuf->vertex_size,
 							     (ushort) vbuf->max_vertices);

src/gallium/auxiliary/draw/draw_pt_emit.c

@@ -165,6 +165,9 @@ void draw_pt_emit( struct pt_emit *emit,
     */
    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 
+   if (count > 65535) /* FIXME */
+      return FALSE;
+
    /* XXX: and work out some way to coordinate the render primitive
     * between vbuf.c and here...
     */

src/gallium/auxiliary/draw/draw_pt_fetch_emit.c

@@ -338,6 +338,9 @@ static boolean fetch_emit_run_linear_elts( struct draw_pt_middle_end *middle,
     */
    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 
+   if (count > 65535) /* FIXME */
+      return FALSE;
+
    hw_verts = draw->render->allocate_vertices( draw->render,
                                                (ushort)feme->translate->key.output_stride,
                                                (ushort)count );

src/gallium/auxiliary/draw/draw_pt_fetch_shade_emit.c

@@ -234,6 +234,9 @@ static void fse_run_linear( struct draw_pt_middle_end *middle,
     */
    draw_do_flush( draw, DRAW_FLUSH_BACKEND );
 
+   if (count > 65535) /* FIXME */
+      return FALSE;
+
    hw_verts = draw->render->allocate_vertices( draw->render,
                                                (ushort)fse->key.output_stride,
                                                (ushort)count );