Is DrawTrianglesOptions missing a GeoM?

[ajzaff]

This may be filed under the tag of questions but I am interested in the change if feasible.

I would like to draw object meshes using the DrawTriangles* API. Without a GeoM however, I must compute vertices+geoM every update. Have I misused the API or is this working as intended? Is there some technical reason why we cannot pass a GeoM for these Draw calls.

Thanks!

[hajimehoshi]

Right, DrawTrianglesOptions doesn't have GeoM and you have to adjust vertices by yourself. Actually with GeoM, the calculation happens every update inside.

Is there some technical reason why we cannot pass a GeoM for these Draw calls.

No technically reason. 1) It's just because DrawTriangles users should have more controls of vertices than DrawImage, then I thought we don't have to have it. 2) Another reason is performance. If GeoM exists in the option, performance is a little degraded due to some overhead.