util: fix util_fill_rect to take util_color instead of u32 param

util_fill_rect could not handle formats with more than 32 bits,
since the fill color was a uint32_t value. Fix this by using
a util_color union instead, and also expand the union so it
works with formats which have up to 256 bits (the max of any
format currently defined).

1 files changed, 7 insertions, 1 deletions

diff --git a/src/gallium/auxiliary/util/u_pack_color.h b/src/gallium/auxiliary/util/u_pack_color.h
index 5f113f742b..aae8b8bdf1 100644
--- a/src/gallium/auxiliary/util/u_pack_color.h
+++ b/src/gallium/auxiliary/util/u_pack_color.h
@@ -42,12 +42,18 @@
 #include "util/u_math.h"
 
 
-
+/**
+ * Helper union for packing pixel values.
+ * Will often contain values in formats which are too complex to be described
+ * in simple terms, hence might just effectively contain a number of bytes.
+ * Must be big enough to hold data for all formats (currently 256 bits).
+ */
 union util_color {
    ubyte ub;
    ushort us;
    uint ui;
    float f[4];
+   double d[4];
 };
 
 /**