Hi!

I'm not getting a correct shadow from the transparency texture!? This is how I do, please tell me if something is wrong.

In Photoshop CS4 I create two images. The first i the image with all white areas gone, so it is transparent. I save it.

Next I make a copy of the image an fill black to all areas on the image that I want to be visible, the rest is filled with white color. Both images are saved as .png files.

In Sketchup I import the main image as an texture and put it on a surface, but perhaps this is why I get a complete shadow from the surface of the geometry?! I also tried to import as image and let it stand alone in the scene, but this also created a "box" looking shadow!?

In vray the alpha channel image is placed in the tranparency slot as a texbitmap. It all look good in the preview dispite if "Use color texture for transparency" is enabled or not!

What is made wrong? Thanks!

Hi,

I remeber that I have seen a topic(like a tutorial) about how to create trees or humans in Photoshop as .png files and then make them transparency in Vray? I can't find it now?

My background is still visible when I render a tree despite that I have a black image shape of the tree in the transparency slot!? And I can't get the image to be transparency in sketchup?! Should it be imported as texture or image?

Preciate som help! Thanks!

Hi!

Let's say I have house with reflecting window glass on it. The house is standing on a simple white surface that is reflected on to the window glass.
Is it possible to "switch off" so that the material on the ground don't give away reflections?

Thanks and a Happy New Year!

I'm going to take a look at that later.

I use the latest public version and the grass displacement I use is GRASS 1 from this place:

http://luzindirecta.luxisessentia.com/index.php?option=com_tpshowcase&view=list&layout=tags&id=vismat&limitstart=720

The strange thing is that it is like random. Sometimes the preview is OK in the material editor, but not when render. Sometimes preview is totally flat, but green, in the material editor preview. Sometimes the preview in the texture editor fails, just gray, despite that I load the diffuse image at the ... !?

My version is 1.48.

Hi,

Despite that grass with displacement map looks like spikes, I like to use it sometimes. But it doesn't always work! I always have to load the diffuse map, and when I make a preview in the texture editor is either gray(nothing) or the image of a pice of grass and then it often works. Sometimes it's impossible to make a preview in the material editor, due to some loading problem with the diffuse, despite that you do it manually. Why is it like this? Preciate some help, because it's so irritating that it only works sometimes! Thanks!

Hmm....this was complicated! I have tested all kinds of values and I'm a little bit confused about the min and max rate? Will a min max value of -3 0 produce a better image, then with a min max value of -2 0 ?

It looks like if I increase sample, the facade don't get crispy and sharp, correct?

I still have problems with the spots.

Yes, it's irradiance map. I increased the HSph.subdiv from 30 to 100, but the result was the same. Should I increase more?

@unknownuser said:

(what is you max / min rate btw? and resolution you render in?)

Do you mean the basic parameters? Min Rate -3 Max Rate -1. Resolution 1280 x 960.

Is it better to use Photon map instead of Irradiance? I need to learn more about this, where could I learn more? Any good books or tutorials?

Thanks!

Sorry! I forgot to post the image! Here it comes! My version is 1.48.89

Hi!

When I render a facade I get areas with dark spots! What is causing this and where can I increase och decrease some value to get a perfect surface on the facade?

Another question that hope to get some clarity, is when I import components from another Sketchup file, they are often invisble when rendering! I have tested a lot of different method to get them visible, like explode, ungroup, reverse faces, make new components. But There must be some simple rule that I have missed?! Should all object be components? This components that is often done in 3ds max and then imported like a 3ds file to Sketchup. Preciate some tips so that object don't get invisible when render. Thanks!

Thanks Chris. The Orbit tool worked fine again when I turned off the V-Ray plugin. But why this just when V-Ray is acitvated? Is there something in V-Ray that I could change to get the Orbit tool to work more smooth?

Thanks!

Hi, I have a really irritable problem when I use Orbit to rotate my Sketchup model. Despite it's very small, it orbits in steps, not smooth as it always do. Any idea what could be wrong? Thanks!

Hi,

I wonder if it's possible to move an object, like a furniture, that has different vray materials attached on it's surface to another file and use the same furniture and it's vray material instead of load the materials again and add it to all the polygons on the furniture?

Thanks!

Thanks for the help! Finally I can see some reflections from an image in the glass! But to see the image I hade to put it very close to the window and make it very small. I also moved it to the left, then it worked. But it's hard to get a naturally reflection. I guess a window can't reflect as much as a mirror. But I'm a little bit confused about the settings for the reflections. First there is the color, white is full reflections and black none? And the number next to the color, is that like a multipier that increases the reflection, the higher the number is?

The image is just a simple image imported and standing alone in the scene. It's a component also, but is there any thing else that should be done to get a better result?

Thanks! I add an part of the rendered window. It looks a bit pale and boring. Is there any way to change this or is this depending on the viewing angle? And yes it's version 1.48.

I'm curious and eager to learn! Thanks!

Hi,

This is a simple setup of my scen. I still can't find the reason why the image don't appear in the glass material. If I put another sketchup object in fron of the glass, then the object is reflected in the glass! Preciate some help! Thanks!

Index of refraction? Could you explain this?

Thanks!

Thanks!

Hi,

I try to put an image of a beautiful landscape in front of the glass window, hoping that the landscape should be seen in the glass, but it didn't! Why not? The ground and sky reflects on the glass, but not my image! What am I doing wrong? Is there a better way to do this? Preciate some help! Thanks!

Thanks, but why do they look so nice in the preview? They don't look flat and it looks like natural grass(almost)!? I'm aware of the texture problems with repeating patterns, but why do the grass texture look so flat despite the use of bump or displacement map? That would have some effect if the texture is seen in front of camera, and not from above. Perhaps I have been missing something?

This render Material ID passes, could I render just shadows and ambient occlusion and put that on the grass in photoshop if I have a building on a grass surface? Or how do you mean? Thanks!