Attachment 18549 Details for Bug 17327 – Test-case that demonstrates the breakage

Test-case that demonstrates the breakage

break-mipmapping-clutter.c (text/x-csrc), 1.26 KB, created by Chris Lord on 2008-08-27 08:04:31 UTC

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Creator: Chris Lord

Created: 2008-08-27 08:04:31 UTC

Size: 1.26 KB

patch

obsolete

>
>/* gcc -o break-mipmapping-clutter break-mipmapping-clutter.c -g -Wall \
>   `pkg-config --cflags --libs clutter-0.8` */
>
>#include <clutter/clutter.h>
>
>static gboolean
>add_label_cb (ClutterActor *stage)
>{
>  ClutterActor *label;
>  
>  /* The glyph 'd' isn't in the cache, so this will add it.
>   * This should appear over the 'abc' text, but instead, the 'abc' disappears
>   * as the glyph cache texture is corrupted (usually clearing it).
>   */
>  label = clutter_label_new_with_text ("Sans 10", "d");
>  
>  clutter_container_add_actor (CLUTTER_CONTAINER (stage), label);
>  
>  return FALSE;
>}
>
>int
>main (int argc, char **argv)
>{
>  ClutterActor *stage, *label;
>  
>  clutter_init (&argc, &argv);
>  
>  stage = clutter_stage_get_default ();
>  
>  /* This will add the glyphs 'a', 'b' and 'c' to the glyph cache */
>  label = clutter_label_new_with_text ("Sans 10", "abc");
>  
>  clutter_container_add_actor (CLUTTER_CONTAINER (stage), label);  
>  
>  /* This will cause the stage to be resized, corrupting the mip-maps for the
>   * previously generated glyphs.
>   */
>  clutter_actor_show (stage);
>  
>  /* Update the glyph cache. We do this in a timeout so the breakage is 
>   * clearly visible.
>   */
>  g_timeout_add_seconds (3, (GSourceFunc)add_label_cb, stage);
>  
>  clutter_main ();
>  
>  return 0;
>}
>

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