V-Ray/Blender 2.5

[zmurdz]

Re: V-Ray/Blender 2.5

Andrey congratulations for the job from me too!

About the displace: updated from git (just minutes ago). Still doesn't work. I've checked the things you mention of course before I posted this

Nice option is this about overriding displacement per object, thanks!


Update: While writing this I made further experiments - if it works with the default cube - yes. So... my object has several materials assigned to different parts and it turned out that it is enough to assign a material without the exact same displacement texture to few faces and the displacement disappears from the whole object.

One more thing: Is it possible to set the bitmap filter int the Bitmap rollout to "None" as a default, because Area which is the default now causes awful artifacts, especially with displacement, bump, normal... with everything. Mip-map works, but none is best. And the annoying thing is that it switches back to Area if I change the texture image for instance and if I forget to disable it again the rendering time is wasted. And it took me some time to find out this mean behavior

[bdancer]

Re: V-Ray/Blender 2.5

Still doesn't work.

Send me your scene - displacement works fine for me.

[voytov]

Re: V-Ray/Blender 2.5

..Good to hear such news, Andrey.

I was away a bit recent days, so please claryfy it to me/us: what you need us to focus on testing, is the latest graphicall build(s) + your latest script (devel), right?

[bdancer]

Re: V-Ray/Blender 2.5

I'll upload new builds today; then focus on this list - viewtopic.php?f=10&t=516
Basically we need to check that everything that is supported by now works as it should.

[zmurdz]

Re: V-Ray/Blender 2.5

I attached a simple scene with the default cube that reproduces the problem. When I render it as is there is no displacement. When I remove the second material - the displacement shows.

[bdancer]

Re: V-Ray/Blender 2.5

When I render it as is there is no displacement. When I remove the second material - the displacement shows.

Yep, its a bug that displacement disappears if second material presents, but anyway displace affect the whole object - its impossible to restrict it to some material. Fixed.

[zmurdz]

Re: V-Ray/Blender 2.5

Hm, now I get this when trying to use Image texture as a bump map:

Traceback (most recent call last):
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render_ops.py", line 918, in render
vb25.render.render(self, scene)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 1871, in render
err= write_scene(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 1685, in write_scene
write_frame(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 1653, in write_frame
_write_object(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 1417, in _write_object
write_object(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 1190, in write_object
write_materials(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 951, in write_materials
mtls_list.append(write_material(bus))
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 812, in write_material
write_material_textures(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/render.py", line 747, in write_material_textures
if write_texture(bus):
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/texture.py", line 124, in write_texture
return PLUGINS['TEXTURE']['TexBitmap'].write(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/plugins/TexBitmap.py", line 232, in write
uvwgen= write_uvwgen(bus)
File "/home/peter/install/blender/install/linux2/2.56/scripts/startup/vb25/uvwgen.py", line 162, in write_uvwgen
bus['material']['material']['normal_uvwgen']= uvwgen
AttributeError: Writing to ID classes in this context is not allowed: floor_tiles, Material datablock, error setting Material.normal_uvwgen

location:<unknown location>:-1

location:<unknown location>:-1

[zmurdz]

Re: V-Ray/Blender 2.5

Hi Andrey, I hope I am not boring you , but I have noticed some more things:

1. Overall color for the FastSSS material is set to white in the exported scene, regardless of what color is selected in the interface.

2. When using displacement texture, there is a "Use bounds" checkbox, which when clicked shows to color pickers for the min and max values. However these should be not a color picker type, but sliders or another input form that allows for input in the range -1 to 1. Only this way (tested by modifying manually the scene_nodes file) I can get my gray based displacement map to displace the mesh correctly.
And here is what the VRay docs say:
"With the default bounderies for the displacement we are unable to see the geometry displaced in the negative direction. However once we set the custom boundaries to -1 and 1 we can see the displaced geometry in both the positive and negative direction. " (http://www.spot3d.com/vray/help/150S...splacement.htm)

3. Is it possible that the light intensity units or the scene units and scale are not properly transmitted to VRay? Because I had to boost the intensity of my lamps (mesh objects emitting light) to unrealistically high values to achieve an adequate lighting - about 280 000 lumens for a room 5x3x2.80m, which is roughly 2x1000 Watt High Pressure Sodium lamps... The walls are white (tested everything between 80 and 98% white), tested with and without GI

[bdancer]

Re: V-Ray/Blender 2.5

zmurdz, please use topic V-Ray/Blender 2.57 for bug-reports.

3. I don't think so. Same stuff often happens in max.

[zmurdz]

Re: V-Ray/Blender 2.5

O.K. I will from now on. Should I repost my last two post there or you can move them?
My blender version is 2.56.5 r35815M

[bdancer]

Re: V-Ray/Blender 2.5

zmurdz, no, tnx, I already add your reports to bug list =)

[zmurdz]

Re: V-Ray/Blender 2.5

And you already fixed some, thanks!!!

[d_ray]

Re: V-Ray/Blender 2.5

i now switched from win-xp 32 to win-7 64 bit.

and i forgot what version of pyhton i had before that. i need python for vray to work with blender.

which version should i download?

[bdancer]

Re: V-Ray/Blender 2.5

d_boy, Blender 2.5 has build-in Python 3.2 - no need to install external one.

[pakirrote]

Re: V-Ray/Blender 2.5

Already out of blender version 2.58. Is there no custom builds? Or some easy tutorial to start using vray with blender 2.58?. may be used vray 2.0 in blender 2.58? thanks.