Remove unconditional use of glibc specific bswap_16() macro.

Fixes unresolved symbol bswap_16 on non-glibc or little endian glibc platforms.

diff --git a/src/mesa/drivers/dri/common/spantmp2.h b/src/mesa/drivers/dri/common/spantmp2.h
index dd5e29f..95f9741 100644 (file)
--- a/src/mesa/drivers/dri/common/spantmp2.h
+++ b/src/mesa/drivers/dri/common/spantmp2.h
@@ -107,7 +107,8 @@
 
 #define READ_RGBA( rgba, _x, _y )                                      \
    do {                                                                        \
-      GLushort p = bswap_16(GET_VALUE(_x, _y));                         \
+      GLushort p = GET_VALUE(_x, _y);                                  \
+      p = p << 8 | p >> 8;                                             \
       rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8;                                \
       rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;                                \
       rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;                                \
@@ -237,7 +238,8 @@
 
 #define READ_RGBA( rgba, _x, _y )                                      \
    do {                                                                        \
-      GLushort p = bswap_16(GET_VALUE(_x, _y));                         \
+      GLushort p = GET_VALUE(_x, _y);                                  \
+      p = p << 8 | p >> 8;                                             \
       rgba[0] = ((p >> 7) & 0xf8) * 255 / 0xf8;                                \
       rgba[1] = ((p >> 2) & 0xf8) * 255 / 0xf8;                                \
       rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;                                \