With WebGL2, we can let one FragmentShader output multiple textures ( MRT ). But this needs write all the codes in one FragmentShader. If I do need seperate the FragmentShader codes to multiple files, for reasons such as modulization or port other’s project to three.js. Can I run VertexShader just …

[image] gonnavis: Can I run VertexShader just once and then output it’s variables(varyings) to multiple FragmentShaders? No. A shader program is a combination of a single vertex and fragment shader. Meaning you need two programs (base.vert + base.frag and base.vert + position.frag).

One VertexShader output to multiple FragmentShaders?

Questions

Mugen87 September 11, 2021, 8:27am 5

You can’t define this on program level. You can only control the render order of 3D objects via Object3D.renderOrder.

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【Question】About Render 2 shader programs with default renderOrder

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One VertexShader output to multiple FragmentShaders?

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