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Add a version of _cogl_pipeline_get_layer which does not create it

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This adds _cogl_pipeline_get_layer_with_flags which takes a set of
flags to modify the behaviour. The only flag currently available is
one to disable creating the layer if the layer index does not already
exist.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts 2012-02-09 20:38:03 +00:00
parent bf7f1e358d
commit 740bd12f2d
2 changed files with 15 additions and 5 deletions
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13
cogl/cogl-pipeline-private.h
View File

@ -665,9 +665,18 @@ _cogl_pipeline_prune_redundant_ancestry (CoglPipeline *pipeline);
void _cogl_pipeline_update_blend_enable (CoglPipeline *pipeline,
CoglPipelineState changes);
typedef enum
{
COGL_PIPELINE_GET_LAYER_NO_CREATE
} CoglPipelineGetLayerFlags;
CoglPipelineLayer *
_cogl_pipeline_get_layer (CoglPipeline *pipeline,
int layer_index);
_cogl_pipeline_get_layer_with_flags (CoglPipeline *pipeline,
int layer_index,
CoglPipelineGetLayerFlags flags);
#define _cogl_pipeline_get_layer(p, l) \
_cogl_pipeline_get_layer_with_flags (p, l, 0)
gboolean
_cogl_is_pipeline_layer (void *object);

7
cogl/cogl-pipeline.c
View File

@ -1707,8 +1707,9 @@ _cogl_pipeline_get_layer_info (CoglPipeline *pipeline,
}
CoglPipelineLayer *
_cogl_pipeline_get_layer (CoglPipeline *pipeline,
int layer_index)
_cogl_pipeline_get_layer_with_flags (CoglPipeline *pipeline,
int layer_index,
CoglPipelineGetLayerFlags flags)
{
CoglPipeline *authority =
_cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LAYERS);
@ -1742,7 +1743,7 @@ _cogl_pipeline_get_layer (CoglPipeline *pipeline,
_cogl_pipeline_get_layer_info (authority, &layer_info);
if (layer_info.layer)
if (layer_info.layer || (flags & COGL_PIPELINE_GET_LAYER_NO_CREATE))
return layer_info.layer;
ctx = _cogl_context_get_default ();