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Substance Designer in how to achieve flowmap flow effect, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Flowmap often simulates the effect of flow in games, and its principle is to use a two-dimensional texture to distort the UV coordinates of the map. So as to achieve a feeling that the image is flowing. Because it is an operation on the map, it has little impact on performance, so you can do some interesting effects.

The specific implementation ideas of flow simulation are as follows:

1. Use a flowmap to distort the original image. Get Twist Map 1

two。 Offset the time to another distortion of the original image. Get Twist Map 2

3. Make the difference between the two twist maps and the difference between the two maps while flowing to get the feeling of infinite flow.

With the implementation idea, it is easy to restore in SD.

First, set up a Pixel Processor node, input the original image and flowmap map, and edit it. As shown below:

After that, we need to do some processing on the input flowmap (input1) map so that it can be restored from (0prime1) to (- 1jing1) to ensure that the flow direction is correct. Do the following:

Next, time is used to make the distortion result change over time, ranging from 0 to 0.05). Here you can Expose the change parameters to the parameters panel to control. Finally, the processed flowmap map is used to modify the uv of the original image to obtain the twist map 1. Do the following:

The idea of making twist map 2 is basically the same as that of 1, but offset the time to a certain extent.

The next step is to merge the two maps. at this stage, we want the intensity of Twist Map 2 to be 0 and that of Twist Map 1 to be 1 when the mixing mode is 0. As time approaches 1, the intensity of Twist Map 2 gradually reaches 1. When the time reaches 1, the intensity of Twist Map 2 gradually returns to 0, and the function graph is as follows:

Yellow is twist map 1

Green is twist map 2

Yellow is the control of mixing intensity.

As can be seen from the function diagram, the purpose of the function of mixing intensity is to make a smooth transition between the two distorted images.

Finally, linear interpolation is used to blend the two images with the blending function as the mask.

As for the production of flowmap, I use Substance Painter to make it.

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