I created a custom shader from MeshStandardMaterial, set uniforms in it and use it so. Value of the uniform is a global variable that I update and the set the material needsUpdate = true to update the material. OnBeforeCompile fires, uniform gets the new value, but I cannot observe any changes on t…

Thing is the official example also uses a custom uniform (time) and it not necessary to set needsUpdate to true. A recompile of the shader is not necessary just because a uniform is updated.

Do you mind sharing your code? Or even better a live example?

Thank you @Mugen87 the project is somewhat large and private at this stage can’t really share the code as is, and tried setting an example in codepen but having issues with Fbx Exporter plugin. Here is how it is: var globalColor; function SetMaterials() { ... var material= new THREE.MeshStanda…

[image] Sarge: globalColor = color; Can you try it like so: globalColor.copy( color ); If you just assign a new color object to globalColor, it does not automatically update the reference of shader.uniforms.my_uniform.value. I also think setting needsUpdate to true is not necessary then.

Sorry my bad, to simplify the example I paraphrased it like so. The color actually is a hex string, which I later parse into THREE.Vector4. function HexToVec4(hex){ //ex: hex equals "#ab11df" var r = parseInt(hex.substring(1, 3), 16) / 255; var g = parseInt(hex.substring(3, 5), 16) / 255; v…

Thank you so much! Just like in that example I referenced the shader parameter in a global variable and set the uniform using it. I had no other way of reaching the uniforms other than running the onBeforeCompile, uniforms are not exposed in MeshStandardMaterial as far as I see.

onBeforeCompile does not update MeshStandardMaterial when material updated

Questions

prisoner849 February 28, 2020, 6:00pm 8

@Sarge Take a look at this post: How to have different colors/textures on bottom and top side of a Plane?

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onBeforeCompile does not update MeshStandardMaterial when material updated

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