[cairo-commit] src/cairo-gl-spans-compositor.c

[Martin Robinson]

 src/cairo-gl-spans-compositor.c |    7 +++++++
 1 file changed, 7 insertions(+)

New commits:
commit 562cc8227feb99b75fb53df7800df66887be129d
Author: Ravi Nanjundappa <ravi.nanjundappa at gmail.com>
Date:   Mon Feb 6 10:56:55 2012 +0530

    gl/spans: Handle SOURCE operations with opaque sources.
    
    SOURCE operations with an opaque are equivalent to OVER.
    This can prevent us from falling back in certain cases.
    
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

diff --git a/src/cairo-gl-spans-compositor.c b/src/cairo-gl-spans-compositor.c
index c5d97aa..4317ccd 100644
--- a/src/cairo-gl-spans-compositor.c
+++ b/src/cairo-gl-spans-compositor.c
@@ -431,6 +431,13 @@ _cairo_gl_span_renderer_init (cairo_abstract_span_renderer_t	*_r,
     cairo_operator_t op = composite->op;
     cairo_int_status_t status;
 
+    if (op == CAIRO_OPERATOR_SOURCE) {
+	if (! _cairo_pattern_is_opaque (&composite->source_pattern.base,
+					&composite->source_sample_area))
+	    return CAIRO_INT_STATUS_UNSUPPORTED;
+	op = CAIRO_OPERATOR_OVER;
+    }
+
     /* XXX earlier! */
     if (op == CAIRO_OPERATOR_CLEAR) {
 	source = &_cairo_pattern_white.base;