commit bec58d8137ebc0f5cfb85af2b9b19345d98e8fda
author DRC <dcommander@users.sourceforge.net> Fri Apr 03 11:27:17 2009 +0000
committer DRC <dcommander@users.sourceforge.net> Fri Apr 03 11:27:17 2009 +0000
tree d30121c23f7300e3d60facc22c3733f825788a50
parent 146d0b27e95622c58e4e3f6186248f610fb6c51a

Add environment variables to force MMX/SSE2 code path selection


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@3743 3789f03b-4d11-0410-bbf8-ca57d06f2519

common/jpeg/jsimd.c

diff --git a/common/jpeg/jsimd.c b/common/jpeg/jsimd.c
index 3248911..7f81dda 100644
--- a/common/jpeg/jsimd.c
+++ b/common/jpeg/jsimd.c
@@ -40,11 +40,18 @@
 LOCAL(void)
 init_simd (void)
 {
+#ifdef WITH_SIMD
+  char *env = NULL;
+#endif
   if (simd_support != ~0)
     return;
 
 #ifdef WITH_SIMD
   simd_support = jpeg_simd_cpu_support();
+  if((env=getenv("JSIMD_FORCEMMX"))!=NULL && !strcmp(env, "1"))
+    simd_support = JSIMD_MMX;
+  else if((env=getenv("JSIMD_FORCESSE2"))!=NULL && !strcmp(env, "1"))
+    simd_support = JSIMD_SSE2;
 #else
   simd_support = JSIMD_NONE;
 #endif