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fixed half pixel offset bug in aa point code

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This commit is contained in:
Brian Paul 2001-01-30 16:38:20 +00:00
parent f2515fa83e
commit e56cc3970f
1 changed files with 4 additions and 4 deletions
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8
src/mesa/swrast/s_pointtemp.h
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@ -1,10 +1,10 @@
/* $Id: s_pointtemp.h,v 1.2 2001/01/04 15:31:38 brianp Exp $ */ /* $Id: s_pointtemp.h,v 1.3 2001/01/30 16:38:20 brianp Exp $ */
/* /*
* Mesa 3-D graphics library * Mesa 3-D graphics library
* Version: 3.5 * Version: 3.5
* *
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved. * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
* *
* Permission is hereby granted, free of charge, to any person obtaining a * Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"), * copy of this software and associated documentation files (the "Software"),
@ -219,8 +219,8 @@ NAME ( GLcontext *ctx, const SWvertex *vert )
for (x = xmin; x <= xmax; x++) { for (x = xmin; x <= xmax; x++) {
#if FLAGS & SMOOTH #if FLAGS & SMOOTH
/* compute coverage */ /* compute coverage */
const GLfloat dx = x - vert->win[0]; const GLfloat dx = x - vert->win[0] + 0.5F;
const GLfloat dy = y - vert->win[1]; const GLfloat dy = y - vert->win[1] + 0.5F;
const GLfloat dist2 = dx * dx + dy * dy; const GLfloat dist2 = dx * dx + dy * dy;
if (dist2 < rmax2) { if (dist2 < rmax2) {
#if FLAGS & RGBA #if FLAGS & RGBA