jReality - the forum

Is there a way to z Rotate a Label by 90 or -90 degress? At the moment labels are always facing the camera that includes when the object or camera is rotated around the viewing direction IIRC. But I sometimes want to write Labels 90 rotated so instead of aligning horizontal on a line it should align...

Joe wrote:I hope that jReality can fix this for smooth shading too, because with flatshading it can already deal with the winding problem correctly.

Depends if the surface normals are stored as part of the model you load in or it computes it automatically.

This looks like your geometry is ill-behaving it doesn't have a unified winding direction it uses for describing the triangles inside the mesh, this is normally not nice behaving. Sounds like it has been exported by some CAD application. They tend to do that.

I found the problem or mistake! There is a second error in the tutorial when you attach textures to a sampler in GLSL you take the sampler unit relative number instead of it's GL_TEXTURE namespace parameter so in this case it should be brickProg.setUniform("sampler",0); brickProg.setUniform("sampler...

Out of curiosity: Does the multitexturing stuff actually work? I changed the GLShadingExample03.java by adding following lines: byte[] imageRGBAdata = new byte[512 * 4]; for (int x = 0; x < 512; x++) { int red = (x >> 1); int green = (x >> 2); int blue = (x << 1)%255; imageRGBAdata[x*4] = (byte)red;...

Actually there is a slight mistake in the tutorial. In the bottom code example, I think it should be AttributeEntityUtility.createAttributeEntity( Texture2D.class, POLYGON_SHADER+"."+TEXTURE_2D_2, ap, true); instead of AttributeEntityUtility.createAttributeEntity( Texture2D.class, ap, POLYGON_SHADER...

Awesome! Thank you very much for the quick response gunn!

I wonder how in jReality you can bind a texture to a specific GLSL sampler. Since IIRC in OpenGL you have to bind a specific texture unit number to the symbolic sampler name. Which is already a major pain! (These are the days where I remember why I like D3D so much more :lol: ) Is there anything whi...

The "final word" for OpenGL questions is the official specification. We're working with OpenGL 2.1 (3.0 exists but I don't know its status). 3.0 is now supported from all relevant IHVs in their latest drivers. JOGL seems to be a bit slow moving when it comes to updating. But I think I heard that th...

Hi STRESS, I have tried to improve the memory behavior of the U3D writing code. This version writes considerably slower than the old one but give it a try and let me know if it works. Then we can think of a better fix. Sechel Well the good news, it doesn't run out of memory anymore. 8) The bad news...

I assume it's my code... Sounds like a WeakHashMap could help, right? Using the component as a key will not -- as soon as Not sure if it's your code. But it is already using WeakHashMap so that obviously doesn't seem to help. :cry: people start to replace the component we have the same problem agai...

Thanks steffen that helps a lot in understanding what is going on sorting, we turn off z-buffer and render all layers, but this results in wrong images when the different layers are rendered in wrong order. For fully opaque geometry it is completely wrong, for very transparent geometry it is almost ...

Hi STRESS, it is possible to use vertex data compression in U3D. But it is extremely Hi Sechel, the problem is not really in U3D (even though the PDF grows as well) it's how the U3D is generated. That part runs out of JVM memory. A small glance on the code it looks to me that every geometry node is...

What is the exact drawing order of scene nodes. Lets say I have a root node that has five children, will it be drawn like this root,child1,child2,child3,child4,child5 or root,child5,child4,child3,child2,child1 or child1,child2,child3,child4,child5, root or child5,child4,child3,child2,child1, root an...

Thank you so much! That helped a lot. I suspected the DEPTH_FUDGE_FACTOR played a role, but didn't understand how to use it correctly. Finding the best value does indeed seem tricky. If I come up with a good strategy, I'll let you know. That will be really hard for the general case. Since the depth...