Mesa (master): mesa: Temporary hack to prevent stack overflow on windows

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: 64da9a1a04f5e3a0609be09a65a4c0419ebd43a5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=64da9a1a04f5e3a0609be09a65a4c0419ebd43a5

Author: José Fonseca <jfonseca at vmware.com>
Date:   Thu Dec  2 20:30:59 2010 +0000

mesa: Temporary hack to prevent stack overflow on windows

e.g. st_readpixels is trying to alloca() an huge ammount of memory from
the stack.

---

 src/mesa/main/config.h |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/config.h b/src/mesa/main/config.h
index ff77bd0..fffb1a7 100644
--- a/src/mesa/main/config.h
+++ b/src/mesa/main/config.h
@@ -150,6 +150,23 @@
 #   define MAX_HEIGHT 16384
 #endif
 
+/* XXX: hack to prevent stack overflow on windows until all temporary arrays
+ * [MAX_WIDTH] are allocated from the heap */
+#ifdef WIN32
+#undef MAX_TEXTURE_LEVELS
+#undef MAX_3D_TEXTURE_LEVELS
+#undef MAX_CUBE_TEXTURE_LEVELS
+#undef MAX_TEXTURE_RECT_SIZE
+#undef MAX_WIDTH
+#undef MAX_HEIGHT
+#define MAX_TEXTURE_LEVELS 13
+#define MAX_3D_TEXTURE_LEVELS 9
+#define MAX_CUBE_TEXTURE_LEVELS 13
+#define MAX_TEXTURE_RECT_SIZE 4096
+#define MAX_WIDTH 4096
+#define MAX_HEIGHT 4096
+#endif
+
 /** Maxmimum size for CVA.  May be overridden by the drivers.  */
 #define MAX_ARRAY_LOCK_SIZE 3000