Compress Vertex Data

Hello,

I am trying to mesh compression stuff to save memory. I compressed the pos from float32 to uint16, and then decompress them in the shader. I use VertexAttributeDescriptor to do this. My implementation works well on PC. However, when I run my test scene on my android device, the mesh disappears(seems like it is not rendered totally). I checked all adb error message and didn't find any clue.

I did not use the Unity default vertex compression because it results bad precision when the mesh is large. In my solution I send the shader the mesh's bounding box info to guarantee precision.

Have anyone did this kind of stuff before?

 

You could try to use RenderDoc to get a better Idea of whats happening. It's not a super easy tool, but very powerfull for any of these situations. https://renderdoc.org/ https://renderdoc.org/docs/how/how_android_capture.html

 

Thx. I followed your suggestion and found that my vertex pos become some random float values