I have a custom fragment shader (obtained by injecting some code using material.onBeforeCompile) which uses discard to remove certain fragments. It looks like these discarded fragments still participate in shadow casting (which makes sense, as that code is not run when computing the shadows). Is the…

I had the same problem today. the shadow map is generated using a texture that is rendered using a depth material. ( check three.js/src/renderers/webgl/WebGLShadowMap.js at bd885e92f3fe8f71fc1160492e9a81ea9d8d94fe · mrdoob/three.js · GitHub ) I fixed it by applying the same discarding logic as in …

For anyone else with this problem: in many situations, just setting alphaTest on the material will be sufficient, as this will remove the shadows cast by discarded fragments too.

Discarded fragments still cast shadows

Questions

manthrax January 12, 2024, 6:54pm 2

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Discarded fragments still cast shadows

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