Bitmap clearity problem

[timmatron]

Change filtrering to none. That will probably do it, but will drive the time way up.

This is one of the most frustrating things with using vray compared to old scanline. I can get the clearest bitmaps, and sharpest edges in seconds with the scanline, but you have to wait forever if you want to see decent results in vray.

I just dont get why its such a big deal.

[vlado]

Change filtrering to none. That will probably do it, but will drive the time way up.

This is one of the most frustrating things with using vray compared to old scanline. I can get the clearest bitmaps, and sharpest edges in seconds with the scanline, but you have to wait forever if you want to see decent results in vray.

I just dont get why its such a big deal.

As far as bitmaps are concerned, you should get almost identical results from VRay and from the scanline renderer, provided that you use at least one sample per pixel. Geometry edges are a different matter...

Best regards,
Vlado

[timmatron]

[quote="vlado"]

you should get almost identical results from VRay and from the scanline renderer, provided that you use at least one sample per pixel.

Can you explain what you mean by that? I found in another thread yesterday that you can also get better results by changing the filtering to summed area and reducing the blur amount, but that still increases the rendering times, proably because of aa.

But here is a classic example of what I'm talking about. Look at the ashphalt material on both of them. They both have pyramidal filtering with a blur of 1.0. The top image, made with scanline, is very sharp and clear. The bottom image, the asphalt map is much more blurred, with the same settings. And the difference in rendering time is about 20 min.

[timmatron]

I didn't mention that the bottom image was made in Vray - just to be clear.

[DP]

where the angle you view bitmaps at becomes shallow, we dial the blur to .1...and turn supersampling on (on standard max materials)

sometimes it takes a different sampler like hammersley to pull detail out

it takes longer, but sometimes things just do