Mesa (master): mesa: fix signed/unsignd mix-up in fetch_signed_l_latc1()

[Brian Paul]

Module: Mesa
Branch: master
Commit: c7d3254b8e0bb0859c4ed969f07b4585af5577b7
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c7d3254b8e0bb0859c4ed969f07b4585af5577b7

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Jan  2 09:00:36 2013 -0700

mesa: fix signed/unsignd mix-up in fetch_signed_l_latc1()

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=58844

---

 src/mesa/main/texcompress_rgtc.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/texcompress_rgtc.c b/src/mesa/main/texcompress_rgtc.c
index fa9172a..1f8de25 100644
--- a/src/mesa/main/texcompress_rgtc.c
+++ b/src/mesa/main/texcompress_rgtc.c
@@ -364,9 +364,10 @@ fetch_signed_l_latc1(const GLubyte *map, const GLuint imageOffsets[],
                      GLint rowStride, GLint i, GLint j, GLint k,
                      GLfloat *texel)
 {
-   GLubyte red;
+   GLbyte red;
    GLuint sliceOffset = k ? imageOffsets[k] / 2 : 0;
-   unsigned_fetch_texel_rgtc(rowStride,  map + sliceOffset, i, j, &red, 1);
+   signed_fetch_texel_rgtc(rowStride, (GLbyte *) map + sliceOffset,
+                           i, j, &red, 1);
    texel[RCOMP] =
    texel[GCOMP] =
    texel[BCOMP] = BYTE_TO_FLOAT(red);