fd3d9f2fa2
The recently introduced size, strength, and jitter pressure curves affect most paint code. This exposed further odd behavior inside `paint_brush_update` where the size pressure curve was being evaluated even if the brush's size did not vary with pressure. To fix this issue, this commit clarifies a few comments and updates the code flow such that cached input values and evaluated pressure values are used more consistently. Pull Request: https://projects.blender.org/blender/blender/pulls/148077