Method for constructing streamline animation under wind field driving of particle system based on GS (Geometry Shader)
A particle system and wind field technology, applied in the field of data processing and shader construction, can solve the problems of only seeing trees, difficult airflow disturbance, and unable to express the sense of movement of the wind field, so as to reduce the calculation burden, ensure control ability, The effect of relieving the burden of computing
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[0069] Describe in further detail below in conjunction with accompanying drawing and embodiment of the present invention:
[0070] 1. The present invention divides the wind speed into 8 grades, and selects 8 colors at equal intervals from the color spectrum of blue to red as the indication of the wind speed. Blue is the smallest and red is the largest. A one-dimensional texture is created, the texture is 1×8 pixels, and these 8 pixels correspond to the above 8 colors, which are used as the sampling information of the wind speed in the geometry shader GS in the subsequent step.
[0071] 2. Control point generation module: Divide the screen area into 16×9 control sub-areas with the same area. Each control sub-area contains N particle bands within the range. In this example, the value of N is 200.
[0072] Set the survival time of each particle belt as T seconds, then die and randomly regenerate in other positions of the control sub-area in the next second, then in each second, t...
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