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cogl-pipeline: Add internal API to get the layer matrix

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This returns the layer matrix given a pipeline and a layer index. The
API is kept as internal because it directly returns a pointer into the
layer private data to avoid a copy into an out-param. We might also
want to add a public function which does the copy.
This commit is contained in:
Neil Roberts 2010-12-06 12:31:16 +00:00
parent e38e9e0355
commit 566831de66
2 changed files with 23 additions and 0 deletions
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4
cogl/cogl-pipeline-private.h
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@ -1044,6 +1044,10 @@ CoglPipelineFilter
_cogl_pipeline_get_layer_mag_filter (CoglPipeline *pipeline,
int layer_index);
const CoglMatrix *
_cogl_pipeline_get_layer_matrix (CoglPipeline *pipeline,
int layer_index);
void
_cogl_pipeline_texture_storage_change_notify (CoglHandle texture);

19
cogl/cogl-pipeline.c
View File

@ -5141,6 +5141,25 @@ _cogl_pipeline_get_layer_combine_constant (CoglPipeline *pipeline,
sizeof (float) * 4);
}
/* We should probably make a public API version of this that has a
matrix out-param. For an internal API it's good to be able to avoid
copying the matrix */
const CoglMatrix *
_cogl_pipeline_get_layer_matrix (CoglPipeline *pipeline, int layer_index)
{
CoglPipelineLayerState change =
COGL_PIPELINE_LAYER_STATE_USER_MATRIX;
CoglPipelineLayer *layer;
CoglPipelineLayer *authority;
g_return_val_if_fail (cogl_is_pipeline (pipeline), NULL);
layer = _cogl_pipeline_get_layer (pipeline, layer_index);
authority = _cogl_pipeline_layer_get_authority (layer, change);
return &authority->big_state->matrix;
}
void
cogl_pipeline_set_layer_matrix (CoglPipeline *pipeline,
int layer_index,