From: Brian Paul <brianp@vmware.com>
Date: Wed, 3 Feb 2010 15:50:32 +0000 (-0700)
Subject: tgsi: added debugging code to catch divide by zero
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f8d824e09a54871df899f368ebaadc9a4e5b62ff;p=mesa.git

tgsi: added debugging code to catch divide by zero
---

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index c0d1b01183a..f7a1bb74a9d 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -264,6 +264,12 @@ static void
 micro_rcp(union tgsi_exec_channel *dst,
           const union tgsi_exec_channel *src)
 {
+#if 0 /* for debugging */
+   assert(src->f[0] != 0.0f);
+   assert(src->f[1] != 0.0f);
+   assert(src->f[2] != 0.0f);
+   assert(src->f[3] != 0.0f);
+#endif
    dst->f[0] = 1.0f / src->f[0];
    dst->f[1] = 1.0f / src->f[1];
    dst->f[2] = 1.0f / src->f[2];
@@ -284,6 +290,12 @@ static void
 micro_rsq(union tgsi_exec_channel *dst,
           const union tgsi_exec_channel *src)
 {
+#if 0 /* for debugging */
+   assert(src->f[0] != 0.0f);
+   assert(src->f[1] != 0.0f);
+   assert(src->f[2] != 0.0f);
+   assert(src->f[3] != 0.0f);
+#endif
    dst->f[0] = 1.0f / sqrtf(fabsf(src->f[0]));
    dst->f[1] = 1.0f / sqrtf(fabsf(src->f[1]));
    dst->f[2] = 1.0f / sqrtf(fabsf(src->f[2]));