177.80: Bug in GLSL built-in functions all() , greaterThanEqual(), lessThanEqual()

kwvtk · 10-10-08, 05:04 PM

Hello,

The following GLSL code leads to some infinite loop on a nVidia Quadro FX 3600m with 177.80 and
works fine with a GeForce6 with driver 169.12.

Code:

vec3 pos;
uniform vec3 lowBounds;
uniform vec3 highBounds;

vec3 rayDirection;

[...]

bool inside=true;
while(inside)
{
[...]
pos=pos+rayDirection;
t+=1.0;

 inside=t<tMax && all(greaterThanEqual(pos,lowBounds))
       && all(lessThanEqual(pos,highBounds));
 }

replacing

Code:

all(greaterThanEqual(pos,lowBounds)) && all(lessThanEqual(pos,highBounds))

by

Code:

pos.x>=lowBounds.x && pos.y>=lowBounds.y && pos.z>=lowBounds.z &&
 pos.x<=highBounds.x && pos.y<=highBounds.y && pos.z<=highBounds.z

fix it.

This is clearly a bug in the built-in functions all() greaterThanEqual() or lessThanEqual().

The nvidia-bug-report.log file and GPU configurations are the same than from this post:
http://www.nvnews.net/vbulletin/showthread.php?t=120860

Best regards.

--
François Bertel, PhD | Kitware Inc. Suite 204
1 (518) 371 3971 x113 | 28 Corporate Drive
| Clifton Park NY 12065, USA

**AaronP** · 10-13-08, 04:28 PM

Please attach the test program.

10-10-08, 05:04 PM	#1
kwvtk Registered User Join Date: Oct 2008 Posts: 17	177.80: Bug in GLSL built-in functions all() , greaterThanEqual(), lessThanEqual() Hello, The following GLSL code leads to some infinite loop on a nVidia Quadro FX 3600m with 177.80 and works fine with a GeForce6 with driver 169.12. Code: vec3 pos; uniform vec3 lowBounds; uniform vec3 highBounds; vec3 rayDirection; [...] bool inside=true; while(inside) { [...] pos=pos+rayDirection; t+=1.0; inside=t<tMax && all(greaterThanEqual(pos,lowBounds)) && all(lessThanEqual(pos,highBounds)); } replacing Code: all(greaterThanEqual(pos,lowBounds)) && all(lessThanEqual(pos,highBounds)) by Code: pos.x>=lowBounds.x && pos.y>=lowBounds.y && pos.z>=lowBounds.z && pos.x<=highBounds.x && pos.y<=highBounds.y && pos.z<=highBounds.z fix it. This is clearly a bug in the built-in functions all() greaterThanEqual() or lessThanEqual(). The nvidia-bug-report.log file and GPU configurations are the same than from this post: http://www.nvnews.net/vbulletin/showthread.php?t=120860 Best regards. -- François Bertel, PhD \| Kitware Inc. Suite 204 1 (518) 371 3971 x113 \| 28 Corporate Drive \| Clifton Park NY 12065, USA

10-13-08, 04:28 PM	#2
AaronP NVIDIA Corporation Join Date: Mar 2005 Posts: 2,487	Re: 177.80: Bug in GLSL built-in functions all() , greaterThanEqual(), lessThanEqual( Please attach the test program.