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authorBrian Paul <brian.paul@tungstengraphics.com>2001-02-07 18:36:52 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2001-02-07 18:36:52 +0000
commit5c55aa4e61adcf136a18f2aea08a44f69840c4a0 (patch)
tree7c0372d41d498dbde5d7760d9925b26b5294f1bb /src/mesa/swrast/s_linetemp.h
parenta1f1586bcb9fcd4a30930fd14b73323642ce85c5 (diff)
fixed divide by zero problem
Diffstat (limited to 'src/mesa/swrast/s_linetemp.h')
-rw-r--r--src/mesa/swrast/s_linetemp.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/mesa/swrast/s_linetemp.h b/src/mesa/swrast/s_linetemp.h
index 8de9f8ee9d..e451f44855 100644
--- a/src/mesa/swrast/s_linetemp.h
+++ b/src/mesa/swrast/s_linetemp.h
@@ -1,4 +1,4 @@
-/* $Id: s_linetemp.h,v 1.4 2001/01/23 23:39:37 brianp Exp $ */
+/* $Id: s_linetemp.h,v 1.5 2001/02/07 18:36:52 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -349,10 +349,11 @@
#endif
#ifdef INTERP_TEX
{
- const GLfloat invQ = 1.0F / tex[3];
+ const GLfloat invQ = tex[3] ? (1.0F / tex[3]) : 1.0F;
fragTexcoord[0] = tex[0] * invQ;
fragTexcoord[1] = tex[1] * invQ;
fragTexcoord[2] = tex[2] * invQ;
+ fragTexcoord[3] = tex[3];
}
#endif
#ifdef INTERP_MULTITEX
@@ -364,6 +365,7 @@
fragTexcoord[u][0] = tex[u][0] * invQ;
fragTexcoord[u][1] = tex[u][1] * invQ;
fragTexcoord[u][2] = tex[u][2] * invQ;
+ fragTexcoord[u][3] = tex[u][3];
}
}
}
@@ -518,10 +520,11 @@
#endif
#ifdef INTERP_TEX
{
- const GLfloat invQ = 1.0F / tex[3];
+ const GLfloat invQ = tex[3] ? (1.0F / tex[3]) : 1.0F;
fragTexcoord[0] = tex[0] * invQ;
fragTexcoord[1] = tex[1] * invQ;
fragTexcoord[2] = tex[2] * invQ;
+ fragTexcoord[3] = tex[3];
}
#endif
#ifdef INTERP_MULTITEX
@@ -533,6 +536,7 @@
fragTexcoord[u][0] = tex[u][0] * invQ;
fragTexcoord[u][1] = tex[u][1] * invQ;
fragTexcoord[u][2] = tex[u][2] * invQ;
+ fragTexcoord[u][3] = tex[u][3];
}
}
}