Sometimes in the materials that FlowMap participates in the UV calculation, if the accuracy is not enough, the UV will appear mosaic effect:
If the accuracy of the original FlowMap is preserved, some methods of drawing the FlowMap can be used to alleviate this situation; when drawing the channel:
Improve the smoothness of the gradient (although some inaccuracies in Gamma correction may be caused here, the final visual effect is the main one):
Note: In Photoshop, use the gradient tool to pull a gradient from black to white. The default is not the standard linear sequence of 0, 1, 2, 3, 4, 5...254, 255, but in the highlight There are further adjustments to the dark parts, and if the gray scales are arranged strictly linearly, the eyes may not look comfortable and uniformly gradual from black to white;
The resolution of the template for drawing the FlowMap is as high as possible, and then zoom to the required resolution after drawing; when zooming, try to choose a smooth gradient:
This can reduce the effect of the mosaic, and the corrected effect is as follows: