Is it possible to provide a public function to update the BufferAttribute immediately?

I have 80m+ vertices and corresponding color attribute (which is dynamic) in my buffer geometry. Sometimes i have to update two different portions of the color buffer. Since the buffer size is huge, i have to update the buffer by parts (gl.bufferSubData).

But, currently there is no way to update two different parts of a buffer in a single frame. I can update one part using updateRange but not multiple parts. I have to update the full buffer (gl.bufferData) for that.

So, what i am proposing, is it possible to provide a function to update the buffer immediately when i need to update it? How about making public function/functions in BufferAttribute to do that?

Three.js version

• Dev
• r82
• …

Browser

• All of them
• Chrome
• Firefox
• Internet Explorer

OS

• All of them
• Windows
• Linux
• Android
• IOS

Hardware Requirements (graphics card, VR Device, …)

[aardgoose]

I don’t think that would fly, BufferAttribute doesn’t have any knowledge of the renderer backend, and I can’t imagine that being encouraged. Alternatively support passing an array of offset/length values to update, that the renderer could be made to handle??

[oguzeroglu]

In this demo using the modification in the PR, 6 random vertices are picked in every 3 seconds and only they are updated: https://oguzeroglu.com/update_ranges.html