Add a CA mask test

1 files changed, 5 insertions, 4 deletions

diff --git a/surface.c b/surface.c
index aee4771..6f071c1 100644
--- a/surface.c
+++ b/surface.c
@@ -4,12 +4,13 @@
 #include <stdio.h>
 
 XRenderSurf *
-xrender_surf_new(Display *disp, Drawable draw, int format, int w, int h)
+xrender_surf_new(Display *disp, Drawable draw, int format, int w, int h, Bool ca)
 {
     XRenderSurf *rs;
     XRenderPictFormat *fmt;
-    XRenderPictureAttributes att;
-
+    XRenderPictureAttributes att = {
+        .component_alpha = ca,
+    };
 
     Visual *vis = DefaultVisual(disp, DefaultScreen(disp));
 
@@ -22,7 +23,7 @@ xrender_surf_new(Display *disp, Drawable draw, int format, int w, int h)
     rs->vis = vis;
     rs->draw = XCreatePixmap(disp, draw, w, h, fmt->depth);
     rs->pic = XRenderCreatePicture(disp, rs->draw, fmt,
-                                   0, &att);
+                                   CPComponentAlpha, &att);
     rs->allocated = 1;
     return rs;
 }