问题
Is it possible to access a rendered image (GLSL) in the next frame with shader toy?
回答1:
Now they have implemented rendering to buffers, so you can render to buffer. Actually, you can use up to four buffers, if you need. Also, watch useful demo.
回答2:
No. There is no access to previously rendered frames.
来源：https://stackoverflow.com/questions/33634861/getting-rendered-screen-as-feedback-texture-shadtertoy