gl: Actuall do fall back to fixed function paths.

Previously we were just returning UNSUPPORTED all the time. I guess that
explains why my code got so slow...

1 files changed, 3 insertions, 1 deletions

diff --git a/src/cairo-gl-composite.c b/src/cairo-gl-composite.c
index 12c6225c..adb63bb6 100644
--- a/src/cairo-gl-composite.c
+++ b/src/cairo-gl-composite.c
@@ -1086,7 +1086,9 @@ _cairo_gl_composite_begin (cairo_gl_context_t *ctx,
                                                                       : CAIRO_GL_SHADER_IN_NORMAL);
     if (unlikely (status)) {
         setup->pre_shader = NULL;
-	return status;
+        if (_cairo_status_is_error (status))
+	    return status;
+        /* fall back to fixed function here */
     }
 
     status = CAIRO_STATUS_SUCCESS;