fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 07:28:11 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

use FABSF(fogCoord) to fix fog calculation problem (Soju Matsumoto)

Browse source
This commit is contained in:
Brian Paul 2005-01-17 16:16:35 +00:00
parent 730fabd67a
commit ea28a5b5b3
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
src/mesa/swrast/s_fog.c
View file

@ -2,7 +2,7 @@
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
@ -109,7 +109,7 @@ _swrast_fog_rgba_span( const GLcontext *ctx, struct sw_span *span )
GLuint i;
for (i = 0; i < span->end; i++) {
GLfloat f, oneMinusF;
f = (fogEnd - fogCoord / w) * fogScale;
f = (fogEnd - FABSF(fogCoord) / w) * fogScale;
f = CLAMP(f, 0.0F, 1.0F);
oneMinusF = 1.0F - f;
rgba[i][RCOMP] = (GLchan) (f * rgba[i][RCOMP] + oneMinusF * rFog);
@ -130,7 +130,7 @@ _swrast_fog_rgba_span( const GLcontext *ctx, struct sw_span *span )
GLuint i;
for (i = 0; i < span->end; i++) {
GLfloat f, oneMinusF;
f = (GLfloat) exp(density * fogCoord / w);
f = (GLfloat) exp(density * FABSF(fogCoord) / w);
f = CLAMP(f, 0.0F, 1.0F);
oneMinusF = 1.0F - f;
rgba[i][RCOMP] = (GLchan) (f * rgba[i][RCOMP] + oneMinusF * rFog);