Simulating worlds on the GPU

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What work is required to visualise the life cycle of an earth-like planet? David A. Roberts shares how each aspect of his simulation was coded and the reasoning for why each “shader” – an element in coding – worked the way they did. For example, he simulated hydraulic (water) erosion by programming water pixels to seek out land pixels with the greatest decrease in elevation — similar to how water works in real life — which created realistic rivers and river basins.
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