test: Add some more colors to the color table in composite.c

Specifically, add transparent black and superluminescent white with
alpha = 0.

diff --git a/test/composite.c b/test/composite.c
index 216046f..5cdc521 100644 (file)
--- a/test/composite.c
+++ b/test/composite.c
@@ -54,10 +54,12 @@ struct format_t
 static const color_t colors[] =
 {
     { 1.0, 1.0, 1.0, 1.0 },
+    { 1.0, 1.0, 1.0, 0.0 },
+    { 0.0, 0.0, 0.0, 1.0 },
+    { 0.0, 0.0, 0.0, 0.0 },
     { 1.0, 0.0, 0.0, 1.0 },
     { 0.0, 1.0, 0.0, 1.0 },
     { 0.0, 0.0, 1.0, 1.0 },
-    { 0.0, 0.0, 0.0, 1.0 },
     { 0.5, 0.0, 0.0, 0.5 },
 };