[BUG] Bump mapping problems
[BUG] Bump mapping problems
Hi all, Hi Nick,
while optimizing my exporter i came across some bumpmapping bugs..
From left to right specular diffuse plastic metal
when taking a closer look there seem to be two bugs..
(1) The bumpmapping of the specular material seems wrong most visible on the sphere and the plane
(2) The smoothing seems not to be working correctly most visible on diffuse and plastic... you can see the faces there
OK hope this helps here is the scene...
Download Scene
cheers
u3dreal
while optimizing my exporter i came across some bumpmapping bugs..
From left to right specular diffuse plastic metal
when taking a closer look there seem to be two bugs..
(1) The bumpmapping of the specular material seems wrong most visible on the sphere and the plane
(2) The smoothing seems not to be working correctly most visible on diffuse and plastic... you can see the faces there
OK hope this helps here is the scene...
Download Scene
cheers
u3dreal
Last edited by u3dreal on Sun Nov 12, 2006 4:38 am, edited 1 time in total.
- Kosmokrator
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Ok the first one is most visible here
the mapping seems to be applied in two directions z and y ...
You can see this on the two circles one at the top of the sphere and another one on the front ... also the mapping of the plane and the
box seem to be strange the plane is only in x direction not in z as it should ..on the box you can see that there are no squares on the frontside only lines ...
here is an image where i tried to mark the points...
hope it's getting clearer now...
The link for the scene should also work now maybe you can get the clue from there ..
i will try to make a closeup of the sphere maybe without transparecy..
cheers
u3dreal
the mapping seems to be applied in two directions z and y ...
You can see this on the two circles one at the top of the sphere and another one on the front ... also the mapping of the plane and the
box seem to be strange the plane is only in x direction not in z as it should ..on the box you can see that there are no squares on the frontside only lines ...
here is an image where i tried to mark the points...
hope it's getting clearer now...
The link for the scene should also work now maybe you can get the clue from there ..
i will try to make a closeup of the sphere maybe without transparecy..
cheers
u3dreal
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- Posts: 1828
- Joined: Mon Sep 04, 2006 3:33 pm
- Kosmokrator
- Posts: 1141
- Joined: Sat Jul 29, 2006 11:52 am
- Location: Greece-Athens
- Kosmokrator
- Posts: 1141
- Joined: Sat Jul 29, 2006 11:52 am
- Location: Greece-Athens
Not the smoothing problem... isn't bump map different form the diffuse ?????? Is this really so hard to see...OKKosmokrator wrote:its a known bug u3dreal.....bump map kills smooth...
Here is the same scene with plastic material ..
Obviously the bump looks a little different from the specular..
agree ???
The smoothing problem only seems to be in the diffuse code..as the pure phong with black diffuse renders fine....
The small facets are in the bump map so this is correct..
Nick you agree ??
cheers
u3dreal
- Kosmokrator
- Posts: 1141
- Joined: Sat Jul 29, 2006 11:52 am
- Location: Greece-Athens
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