32-bit vertex indices

Question

ggerganov opened this issue 5 years ago · 7 comments

Can this be achieved? Seems like WebGL only support 16-bit integer indices.

Answer 1 · 2022-05-08T08:02:03.000Z

ImDrawList: Support for large meshes (64k+ vertices) with 16-bits indices
I am a game developer, imgui-ws can not draw large meshes, do you plan to support it ?

Answer 2 · 2022-05-08T08:49:09.000Z

Thanks for the link. This will be supported, but I cannot provide ETA at the moment.

Answer 3 · 2022-05-28T08:58:17.000Z

It seems in order to support large meshes with 16-bit indices, you need the OpenGL renderer to support the glDrawElementsBaseVertex() function:

Currently, it seems to not be supported by WebGL, so not sure if we can do anything at the moment

Answer 4 · 2022-05-28T09:06:20.000Z

You mean is WebGL not support this feature? I am sorry to know less about WebGL.

Answer 5 · 2022-05-28T09:45:45.000Z

It turns out that some browsers actually support 32-bit vertex indices, so I just created a branch that uses this:

@Eragon-Brisingr You can give it a try and see if it works for you. See instructions in the PR

Answer 6 · 2022-05-28T09:47:50.000Z

Thank you, I will try it~

Answer 7 · 2022-05-28T11:24:15.000Z

OES_element_index_uint work very good. Seem Browser compatibility is full support.