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st-theme-node-drawing: clear border buffer before drawing on it

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A new texture has undefined contents - when we're creating a shadow,
we need to clear the contents of the texture before drawing the border
and background into it.

https://bugzilla.gnome.org/show_bug.cgi?id=668048
This commit is contained in:
Owen W. Taylor 2012-01-16 14:43:35 -05:00
parent a5324462c3
commit 65230bfd7f
1 changed files with 5 additions and 0 deletions
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5
src/st/st-theme-node-drawing.c
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@ -1427,9 +1427,14 @@ st_theme_node_render_resources (StThemeNode *node,
if (offscreen != COGL_INVALID_HANDLE) if (offscreen != COGL_INVALID_HANDLE)
{ {
ClutterActorBox box = { 0, 0, width, height }; ClutterActorBox box = { 0, 0, width, height };
CoglColor clear_color;
cogl_push_framebuffer (offscreen); cogl_push_framebuffer (offscreen);
cogl_ortho (0, width, height, 0, 0, 1.0); cogl_ortho (0, width, height, 0, 0, 1.0);
cogl_color_set_from_4ub (&clear_color, 0, 0, 0, 0);
cogl_clear (&clear_color, COGL_BUFFER_BIT_COLOR);
st_theme_node_paint_borders (node, &box, 0xFF); st_theme_node_paint_borders (node, &box, 0xFF);
cogl_pop_framebuffer (); cogl_pop_framebuffer ();
cogl_handle_unref (offscreen); cogl_handle_unref (offscreen);