glfiltercube: Don't initialize multiple shaders on renegotiation

diff --git a/ext/gl/gstglfiltercube.c b/ext/gl/gstglfiltercube.c
index a17b5df..ad529b3 100644 (file)
--- a/ext/gl/gstglfiltercube.c
+++ b/ext/gl/gstglfiltercube.c
@@ -292,6 +292,12 @@ gst_gl_filter_cube_reset_gl (GstGLFilter * filter)
     gl->DeleteBuffers (1, &cube_filter->vertex_buffer);
     cube_filter->vertex_buffer = 0;
   }
+
+  if (cube_filter->shader) {
+    gst_gl_context_del_shader (GST_GL_BASE_FILTER (filter)->context,
+        cube_filter->shader);
+    cube_filter->shader = NULL;
+  }
 }
 
 static gboolean
@@ -313,6 +319,11 @@ gst_gl_filter_cube_init_shader (GstGLFilter * filter)
 {
   GstGLFilterCube *cube_filter = GST_GL_FILTER_CUBE (filter);
 
+  if (cube_filter->shader) {
+    gst_object_unref (cube_filter->shader);
+    cube_filter->shader = NULL;
+  }
+
   /* blocking call, wait the opengl thread has compiled the shader */
   return gst_gl_context_gen_shader (GST_GL_BASE_FILTER (filter)->context,
       cube_v_src, cube_f_src, &cube_filter->shader);