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material: Adds _cogl_material_get_layer_texture

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This is a counter part for _cogl_material_layer_get_texture which takes
a layer index instead of a direct CoglMaterialLayer pointer. The aim is
to phase out code that directly iterates the internal layer pointers of
a material since the layer pointers can change if any property of any
layer is changed making direct layer pointers very fragile.
This commit is contained in:
Robert Bragg 2010-10-12 12:35:47 +01:00
parent 0288ba3911
commit bc3a26d035
2 changed files with 13 additions and 0 deletions
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4
clutter/cogl/cogl/cogl-material-private.h
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@ -926,6 +926,10 @@ _cogl_material_layer_get_authority (CoglMaterialLayer *layer,
CoglHandle
_cogl_material_layer_get_texture (CoglMaterialLayer *layer);
CoglHandle
_cogl_material_get_layer_texture (CoglMaterial *material,
int layer_index);
typedef gboolean (*CoglMaterialInternalLayerCallback) (CoglMaterialLayer *layer,
void *user_data);

9
clutter/cogl/cogl/cogl-material.c
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@ -1970,6 +1970,15 @@ _cogl_material_layer_get_texture (CoglMaterialLayer *layer)
return authority->texture;
}
CoglHandle
_cogl_material_get_layer_texture (CoglMaterial *material,
int layer_index)
{
CoglMaterialLayer *layer =
_cogl_material_get_layer (material, layer_index);
return _cogl_material_layer_get_texture (layer);
}
static void
_cogl_material_prune_empty_layer_difference (CoglMaterial *layers_authority,
CoglMaterialLayer *layer)