The results of one shader run are used as texture input for another shader

Questions
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Are there any supported apis for reference？
Thanks

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They might have to be updated due to system changes, but both of these do that.

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This is exactly what a render target is for and if it is a “full screen” or texture quad, it is similar to a Procedural Texture.

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Render Target Texture With Multiple Passes | Babylon.js Documentation (babylonjs.com)

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That’s right. I forgot about rtt :laughing:

My head is not working well. Maybe I should have a good rest. It is almost 12 o 'clock at night here

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    renderTarget.setMaterialForRendering(ground, causticMaterial);

nono, it looks a little different, I’m talking about bufferA without any mesh as a carrier

You could interpret that as adding it to the post-effects

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@carolhmj I clicked on this case yesterday, and I felt a little different, but I didn’t realize you didn’t know I was looking at this case
As it turns out, take a break, or your brain can’t keep up :smile:

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