Cesium Ion & OpenGL or Vulkan

Cesium ion
1

Hi,

I would like to know if there is an example to render a globe with OpenGL or Vulkan with Cesium Ion.

Thanks,
Michael,

2

Hi,

You might find the linked community post helpful. It is a post describing a library to load data in Vulkan.

vsgCs - 3D Tiles and Cesium ion for Vulkan Scene Graph (VSG) - General - Cesium Community

5

Hi,Tim
I wonder if it is possible to read local offline terrain data( terrain quantized-mesh data) through vsgCS without using cesium ion.

Thanks
wzh

6

Hi,
vsgCS can read local tilesets using the file: syntax of a URL. You should be able to embed the URL as a tileset in a world definition file, like in the examples in its test directory. In current vsgCs the worldviewer program can take URLs to tilesets directly on the command line, but I don’t think it will do the right thing with quantized terrain or a JSON layers file; thanks for pointing that out!

7

Hi,
Thank you for your very helpful answer.I have two more questions.
1,When I am using the --poi parameter to enter the latitude and longitude after no viewpoint does not take effect What reason.?
2,Whether water mask is valid in terrain mesh data?
3,Whether shadow map annotations can be opened in the worldviewer application?
Look forward to your answer!
Thanks

8

1,When I am using the --poi parameter to enter the latitude and longitude after no viewpoint does not take effect What reason.?

That’s a bug. I’ve just pushed a fix to the master and next branches on github.

2,Whether water mask is valid in terrain mesh data?

vsgCs doesn’t do anything with the water mask (which is only available on quantized terrain like Cesium World Terrain). It would be simple enough to make the water mask texture available as a descriptor / sampler for the shaders, but then there’s the issue of supporting user-supplied shaders, which I haven’t really thought about.

3,Whether shadow map annotations can be opened in the worldviewer application?

Not at present. I had shadow maps working when they were first introduced to VSG, but then their interface changed, I didn’t keep vsgCs in sync with it, and ended up disabling shadows. It hasn’t been a priority for me, but I will revisit the question after new multiview code merged into the Cesium Native library.

9

Thank you again for your reply, it’s very helpful!