Make the size of the dot/sphere that represents particles in the
viewport consistent across screens with different DPI.
The shader was multiplying the particle's size (gl_PointSize) with
sizePixel which lead to particles being drawn bigger in relation to
the rest of the UI on screens with a higher DPI.
Instead the draw_size is now multiplied with U.ui_scale so the
particle's size still adapts together with the rest of the interface
when changing the global UI Scale.
| Display / UI Scale | 1080p / 1.0 | retina / 1.0 | 1080p / 2.0 | retina / 2.0 |
|---|---|---|---|---|
| patch |  |  |  |  |
| master |  |  |  |  |