- Sat Jul 29, 2006 8:54 pm
#174402
Finnally I could get the expected result, but avoiding bump mapping!
If you create a model of the water surface (Too much polygons) and assign smooth property several times and just in case press recalculate normals, the reflections and refractions will be continuous as in real life.
Unfortunately Maxwell cannot handle bump maps as other softwares do.
I have tested all the water bump maps used in this tests, on other software, and I have got great results, but Maxwell seems to read each pixel in the bump map as a separated polygon which is a perfectly horizontal plane.
In this way the whole thing will work as a bunch of steps, instead of a curved surface.
This problem explains the weird behaviour that are seen in the other Bump topic in this forum.
There it is seen that a blured bump map gets better results.
http://www.maxwellrender.com/forum/view ... hp?t=17632
This happens because Maxwell do not guarantee the continuity of the relief, taken from a bump map. Instead it reads it as independent pixels.
In the blured bump map, the map itself forces Maxwell to show a better continuity, but it is just an illusion produced by a reduced height between steps. biut they are still steps, between pixels.
I do not know if this behaviour has better results in other uses, but I hope NL will understand this as a bug, to be fixed, so that we could use Bump mapping for water again.
Ernesto
If you create a model of the water surface (Too much polygons) and assign smooth property several times and just in case press recalculate normals, the reflections and refractions will be continuous as in real life.
Unfortunately Maxwell cannot handle bump maps as other softwares do.
I have tested all the water bump maps used in this tests, on other software, and I have got great results, but Maxwell seems to read each pixel in the bump map as a separated polygon which is a perfectly horizontal plane.
In this way the whole thing will work as a bunch of steps, instead of a curved surface.
This problem explains the weird behaviour that are seen in the other Bump topic in this forum.
There it is seen that a blured bump map gets better results.
http://www.maxwellrender.com/forum/view ... hp?t=17632
This happens because Maxwell do not guarantee the continuity of the relief, taken from a bump map. Instead it reads it as independent pixels.
In the blured bump map, the map itself forces Maxwell to show a better continuity, but it is just an illusion produced by a reduced height between steps. biut they are still steps, between pixels.
I do not know if this behaviour has better results in other uses, but I hope NL will understand this as a bug, to be fixed, so that we could use Bump mapping for water again.
Ernesto