static void
clutter_gst_video_sink_set_glsl_shader (ClutterGstVideoSink *sink,
const gchar *shader_src)
{
ClutterGstVideoSinkPrivate *priv = sink->priv;
if (priv->texture)
clutter_actor_set_shader (CLUTTER_ACTOR (priv->texture), NULL);
if (priv->program)
{
cogl_program_unref (priv->program);
priv->program = NULL;
}
if (priv->shader)
{
cogl_shader_unref (priv->shader);
priv->shader = NULL;
}
if (shader_src)
{
ClutterShader *shader;
/* Set a dummy shader so we don't interfere with the shader stack */
shader = clutter_shader_new ();
clutter_shader_set_fragment_source (shader, dummy_shader, -1);
clutter_actor_set_shader (CLUTTER_ACTOR (priv->texture), shader);
g_object_unref (shader);
/* Create shader through COGL - necessary as we need to be able to set
* integer uniform variables for multi-texturing.
*/
priv->shader = cogl_create_shader (COGL_SHADER_TYPE_FRAGMENT);
cogl_shader_source (priv->shader, shader_src);
cogl_shader_compile (priv->shader);
priv->program = cogl_create_program ();
cogl_program_attach_shader (priv->program, priv->shader);
cogl_program_link (priv->program);
}
}
static void
rb_cogl_program_free (void *ptr)
{
if (ptr)
cogl_program_unref (ptr);
}
