rt engine and textures.

[pollack]

I'm starting to use vray rt with gpu accel and noticed a few things I wonder if you could answer.

Textures aren't showing up in openCL.
in Cuda, uv mapped textures show up but projected ones do not.
It's a file texture tga into a projection into vray mtl diffuse.

I'm also getting some output errors. Are these normal?
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsPNG] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsJPEG] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsSGI] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsTIFF] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsTGA] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsEXR] No image writer specified.

The image looks different than when raster rendered. Lighter like perhaps the shadowing calculation isn't the same. Is the RT engine not going to be an identical visual result to cpu?

Thanks.

[t.petrov]

Textures aren't showing up in openCL.
in Cuda, uv mapped textures show up but projected ones do not.
It's a file texture tga into a projection into vray mtl diffuse.

Hm, probably your openCL device doesn't support textures or you're running with the CPU fallback.
If you have a CUDA capable card it is better to use RT CUDA, because it is more stable.

I think we don't support projection textures on the GPU, yet.
What version are you running?

I'm also getting some output errors. Are these normal?
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsPNG] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsJPEG] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsSGI] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsTIFF] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsTGA] No image writer specified.
[2013/Jul/31|18:53:26] V-Ray warning: [SettingsEXR] No image writer specified.

These are not errors, just ignore them.

The image looks different than when raster rendered. Lighter like perhaps the shadowing calculation isn't the same. Is the RT engine not going to be an identical visual result to cpu?

RT GPU always does Brute Force GI and Shadows.
Generally we try to make them identical, but sometimes there are differences