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[cogl-material] Be more carefull about flushing in cogl_material_remove_layer

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Previously we would call _cogl_material_pre_change_notify unconditionally, but
now we wait until we really know we are removing a layer before notifying the
change, which will require a journal flush.

Since the convenience functions cogl_set_source_color4ub and
cogl_set_source_texture share a single material, cogl_set_source_color4ub
always calls cogl_material_remove_layer.  Often this is a NOP though and
shouldn't require a journal flush.

This gets performance back to where it was before reverting the per-actor
material commits.
This commit is contained in:
Robert Bragg 2009-06-24 18:34:06 +01:00
parent 6ee8e15654
commit 87f99e214a
1 changed files with 9 additions and 3 deletions
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12
clutter/cogl/common/cogl-material.c
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@ -1026,20 +1026,26 @@ cogl_material_remove_layer (CoglHandle material_handle,
CoglMaterial *material;
CoglMaterialLayer *layer;
GList *tmp;
gboolean notified_change = FALSE;
g_return_if_fail (cogl_is_material (material_handle));
material = _cogl_material_pointer_from_handle (material_handle);
/* possibly flush primitives referencing the current state... */
_cogl_material_pre_change_notify (material, FALSE, NULL);
for (tmp = material->layers; tmp != NULL; tmp = tmp->next)
{
layer = tmp->data;
if (layer->index == layer_index)
{
CoglHandle handle = (CoglHandle) layer;
/* possibly flush primitives referencing the current state... */
if (!notified_change)
{
_cogl_material_pre_change_notify (material, FALSE, NULL);
notified_change = TRUE;
}
cogl_handle_unref (handle);
material->layers = g_list_remove (material->layers, layer);
material->n_layers--;