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fixed divide by zero problem

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This commit is contained in:
Brian Paul 2001-02-07 18:36:52 +00:00
parent a1f1586bcb
commit 5c55aa4e61
1 changed files with 7 additions and 3 deletions
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10
src/mesa/swrast/s_linetemp.h
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@ -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];
}
}
}