From bd20e4b7616b9b52ec64f1c007c369e41cdd442c Mon Sep 17 00:00:00 2001
From: keithw <keithw>
Date: Fri, 28 Mar 2003 12:18:46 +0000
Subject: Read alpha component from framebuffer

---
 xc/lib/GL/mesa/src/drv/i830/i830_span.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/xc/lib/GL/mesa/src/drv/i830/i830_span.c b/xc/lib/GL/mesa/src/drv/i830/i830_span.c
index be02ba7f4..34830bf58 100644
--- a/xc/lib/GL/mesa/src/drv/i830/i830_span.c
+++ b/xc/lib/GL/mesa/src/drv/i830/i830_span.c
@@ -205,11 +205,6 @@ do {								\
 #define WRITE_PIXEL(_x, _y, p)			\
     *(GLuint *)(buf + _x*4 + _y*pitch) = p
 
-/* Note to Self:
- * Don't read alpha from framebuffer, because its not correct.  From a
- * reading of the spec, this should not be the case, need to ask an
- * engineer at Intel.
- */
 
 #define READ_RGBA(rgba, _x, _y)					\
     do {							\
@@ -217,7 +212,7 @@ do {								\
 	rgba[0] = (p >> 16) & 0xff;				\
 	rgba[1] = (p >> 8)  & 0xff;				\
 	rgba[2] = (p >> 0)  & 0xff;				\
-	rgba[3] = 255;						\
+	rgba[3] = (p >> 24) & 0xff;				\
     } while (0)
 
 #define TAG(x) i830##x##_8888
-- 
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