On 01/10/2012 11:36 AM, Eirik Byrkjeflot Anonsen wrote:
Brian Paul<brianp at vmware.com> writes:
---
src/mesa/main/format_unpack.c | 499 +++++++++++++++++++++++++++++++++++++++++
src/mesa/main/format_unpack.h | 3 +
2 files changed, 502 insertions(+), 0 deletions(-)
diff --git a/src/mesa/main/format_unpack.c b/src/mesa/main/format_unpack.c
index c723e89..a7308a1 100644
--- a/src/mesa/main/format_unpack.c
+++ b/src/mesa/main/format_unpack.c
@@ -29,6 +29,22 @@
#include "../../gallium/auxiliary/util/u_format_r11g11b10f.h"
+
+/* Expand 1, 2, 3, 4, 5, 6-bit values to fill 8 bits */
+
+#define EXPAND_1_8(X) ( (X) ? 0xff : 0x0 )
+
+#define EXPAND_2_8(X) ( ((X)<< 6) | ((X)<< 4) | ((X)<< 2) | (X) )
+
+#define EXPAND_3_8(X) ( ((X)<< 5) | ((X)<< 2) | ((X)> 1) )
I assume you meant ((X)>> 1) rather than ((X)> 1) here?
Yes, thanks. I'll fix that.
-Brian
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