Yuri Kovelenov

You can get the technical info from this page.

Hi c4cc,

Verge3D/WebGL renders a mesh by processing its geometry information (coordinates, normals, texture coords, vertex colors etc) stored in long arrays. Those are called “geometry buffers”. Big meshes imply large geometry buffers and require more video memory.

When rendering meshes, Verge3D/WebGL must mark a mesh’s geometry buffers “active” and also select a shader (a GPU program), and may be do some other stuff. Only after that, WebGL would issue a command to render this mesh. The whole procedure is called a “render call”. The more different geometry buffers and different shaders (in the 3D software, “materials”) are contained in the scene, the more render calls will be needed.

Preparing for a render call is a CPU-intensive operation that affects the FPS. Thus, you want to have as less of render calls as possible. This can be achieved by batching similar meshes into one, and by using less different materials. Hope this helps!

Hi c4cc,

Using vertex colors instead of textures can save you video memory, make the app load faster, and improve performance somewhat. Check out this optimization advice for further details.

Hi Xeon,

I agree it would be a useful addition. We’ll think about it!

For those who are interested, there are more nice web interactives on the guys’ website. Especially loved this one – liquid methane bunkering vessel.

• This reply was modified 7 months ago by Yuri Kovelenov.