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Before I buy VRAY
About Truespace Archives
These pages are a copy of the official truespace forums prior to their removal somewhere around 2011.
They are retained here for archive purposes only.
Before I buy VRAY // New Users
Post by johnhoward // Sep 16, 2007, 8:10am
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johnhoward
Total Posts: 231
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I read a review about VRAY which said,
"...the new sun and sky system is a combination of an environment texure map (VRaySky) and a special light type (VRaySun). Both of them work together for creating a procedural environment that can be used for quick and reallistic lighting setup of daylight scenes..."
My question: are these features available in TS 7.51? The review did not discuss TS.
Another question: can panoramic HDR images be made visable in workspace in real-time, or only when rendered with VRAY?
Another question: I note that the VRAY buttons in workspace do not include a "render to file", just "VRAY Render Scene". Does the "to screen vs. to file" option appear after clicking on the render button?
Thanks for any info. |
Post by splinters // Sep 16, 2007, 8:14am
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splinters
Total Posts: 4148
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Best to consider tS vray as a very different program to the Max and other mainstream versions. While it is fast and effective Caligari worked with the SDK to integrate it so it is not as powerful and extensive as some other versions.
I believe someone scripted the abilty to show HDRI images in the background (Noko?)
Yes, you choose render, it renders to screen then you can save it. |
Post by Steinie // Sep 16, 2007, 8:17am
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Steinie
Total Posts: 3667
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The Render to File is there. |
Post by johnhoward // Sep 16, 2007, 8:19am
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johnhoward
Total Posts: 231
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Thanks Splinters. Does this mean that the sun and sky features are not there in TS VRAY? |
Post by johnhoward // Sep 16, 2007, 8:25am
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johnhoward
Total Posts: 231
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Steinie -
Perhaps it will show after I buy and install VRAY, but it's not there now. |
Post by Emmanuel // Sep 16, 2007, 9:12am
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Emmanuel
Total Posts: 439
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"...the new sun and sky system is a combination of an environment texure map (VRaySky) and a special light type (VRaySun). Both of them work together for creating a procedural environment that can be used for quick and reallistic lighting setup of daylight scenes..."
My question: are these features available in TS 7.51? The review did not discuss TS.
There is no sun/sky button in tS VRay.
But belive me, it is very quick & easy to create a realistic lightening setup for daylight scenes. Just set Global Illumination with default settings and a light grey/blue color for the "sky", add an infinite light that casts shadows and... that's all :)
This is the configuration used in these renders (http://forums1.caligari.com/truespace/showthread.php?t=1156&). And it works. |
Post by johnhoward // Sep 16, 2007, 11:18am
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johnhoward
Total Posts: 231
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Emmanual, thanks for replying. Your scenes are very convincing and beautiful - that's the sunny look I'm aiming at.
But I'm not sure I understand how. In workspace, infinite lights don't have shadows, but I could use directional lights for sunlight.
And I don't understand what "global illumination" is. There is global environment on the Model side, but it uses an image. I don't see where to specify a color. There is "ambient" light on the Workspace side, which I can color. |
Post by Jack Edwards // Sep 16, 2007, 4:35pm
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Jack Edwards
Total Posts: 4062
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Keep in mind that Workspace DX9 and VRay are two different rendering engines with different rules and results. So they render differently. When you're making a scene its important to make different choices in how you do things depending on what render engine is being are targeted. |
Post by Emmanuel // Sep 16, 2007, 8:20pm
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Emmanuel
Total Posts: 439
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Emmanual, thanks for replying. Your scenes are very convincing and beautiful - that's the sunny look I'm aiming at.
But I'm not sure I understand how. In workspace, infinite lights don't have shadows, but I could use directional lights for sunlight.
And I don't understand what "global illumination" is. There is global environment on the Model side, but it uses an image. I don't see where to specify a color. There is "ambient" light on the Workspace side, which I can color.
Workspace lights are impossible to work with. Even my real-time projects lightening -which should be arranged in WS- are made in Modeler. I hope this will change soon ; at least I will focus on it as a beta tester.
So, for now, I suggest you to create your lights setup in Modeler, as shown below.
Here you see the Default tab of VRay. Its settings are sufficient for most cases. |
Post by TomG // Sep 17, 2007, 2:40am
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TomG
Total Posts: 3397
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To answer another question, Global Illumination lets light "bounce around" in a scene.
Say you have sunny day, wall, ground, sun from behind wall casting quite a long shadow, done with one infinite light for the sun. In traditional rendering (without GI) the back of the wall will be black as the sun is not hitting the wall directly.
In the real world, light bounces back up from the ground onto the wall, adding illumination. GI adds in this effect. If the ground is green (grass say) then the light on the wall is green, bounced up from the ground. If red (say its bricks on the ground), the bounced light is red.
GI also adds in the effect of "light from all around" - sunlight gets scattered in the atmosphere so that the sky itself becomes one big, soft light source. Again this would provide illumination on the dark side of the wall. GI also adds in this effect too.
This means that with just one light source, you can get very convicing "real world daylight" renders.
HTH!
Tom |
Post by johnhoward // Sep 17, 2007, 4:42am
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johnhoward
Total Posts: 231
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Thanks again to all. It seems to me that I should fairly quickly spend more of those Bernanke dollars before they shrink any further, and get VRAY. |
Post by splinters // Sep 17, 2007, 5:17am
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splinters
Total Posts: 4148
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Good for you. While I favour a model/LW combination I have learnt to love Vray too. Just check out the Genhead models I did or the Little Cloud project to see Vray used somewhat differently to the architectural/product visualisations it lends itself so well to...:D |
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