Slow OpenGL calls for every vertex and weight painting step #70013

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Brecht Van Lommel · 2019-09-18T12:37:58+02:00

Brecht Van Lommel commented

2019-09-18 12:37:58 +02:00

paint_last_stroke_update is called for every stroke step, which calls ED_view3d_autodist_simple to convert a mouse position to world space position. This does an OpenGL call to read from the depth buffer which has high latency.

Computing a world space position should not require an OpenGL call, it is already computed for the actual painting operation.

`paint_last_stroke_update` is called for every stroke step, which calls `ED_view3d_autodist_simple` to convert a mouse position to world space position. This does an OpenGL call to read from the depth buffer which has high latency. Computing a world space position should not require an OpenGL call, it is already computed for the actual painting operation. ![stroke_auto_depth.png](https://archive.blender.org/developer/F7755278/stroke_auto_depth.png)

Brecht Van Lommel commented

2019-09-18 12:37:59 +02:00

Added subscriber: @brecht

blender-admin commented

2019-09-23 17:09:21 +02:00

This issue was referenced by 14acac0bb7

This issue was referenced by 14acac0bb7f371da915188809b96de6ecaa3e507

Brecht Van Lommel commented

2019-09-23 17:42:31 +02:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2019-09-23 17:42:31 +02:00

Brecht Van Lommel self-assigned this 2019-09-23 17:42:31 +02:00

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Reference: blender/blender#70013

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Slow OpenGL calls for every vertex and weight painting step #70013