ShadowMaterial use just one specific light

blackInk · September 23, 2019, 2:41pm

Say I´m using a ShadowMaterial to receive and show shadow. Say I´m using 2 DirectionalLights, both casting shadows.

Can I tell the ShadowMaterial, that it should receive/show only shadows from one of the 2 DirectionalLights?

looeee · September 24, 2019, 1:39am

Scene: background, fog and shadow.

opened 07:51PM - 03 Sep 19 UTC

mrdoob

Design

This cycle I was hoping to do some API design clean up in the `Scene` object. … This is the current thinking: ### Background Taking #16900 and #17199 into account... ```js scene.background = new THREE.ColorBackground( color ); scene.background = new THREE.TextureBackground( texture, { fit: 'contain' } ); scene.background = new THREE.CubeTextureBackground( texture, { blurriness: 0.5, rotation: 90 * THREE.Math.DEG2RAD } ); ``` Note: When using `THREE.CubeTextureBackground`, all meshes in the scene will use it as `material.envMap` by default so it'll be easier for users to get good looking results. ### Fog Taking #17355 into account... ```js scene.fog = new THREE.RangeFog( color, near, far ); scene.fog = new THREE.ExponentialFog( color, density ); scene.fog = new THREE.ExponentialSquaredFog( color, density ); ``` ### Shadow I thought that we could also move `WebGLRenderer.shadowMap` to `Scene` as `Scene.shadow` so it can be serialised (and will allow us to do some API redesign too). ```js scene.shadow = new THREE.PCFShadow(); scene.shadow = new THREE.VSMShadow(); scene.shadow = new THREE.PCSSShadow(); ``` Suggestions? Improvements? /cc @WestLangley @Mugen87 @bhouston @sunag @DanielSturk @supereggbert @EliasHasle

github.com/mrdoob/three.js

Feature request: More fine-grained control over shadow map rendering

opened 11:30PM - 24 Jun 19 UTC

closed 08:42PM - 26 Mar 21 UTC

JustASquid

Enhancement

For my application, I need some fine-grained control over render order for a num…ber of reasons. Thankfully the layers system offers an easy and convenient way to render specific objects in a specific order. ```js camera.layers.set(1); renderer.render(scene, camera); // Render some objects with depthRead/depthWrite set differently maybe camera.layers.set(2); renderer.render(scene, camera); // Perhaps apply some postprocessing effect camera.layers.set(3); renderer.render(scene, camera); // Render UI after postprocessing camera.layers.set(4); renderer.render(scene, camera); ``` The above pattern works fine, is flexible, and (I think) is perfectly performant. However, I have found that I need more granular control over shadow map rendering. In the above example, I have an object on layer 1 that needs to display the shadow of an object on layer 3. To fix the issue, I'd need to render *only* the shadow map with both layers 1-3 active before layer 1 is rendered 'for real'. However, it doesn't appear that there is any way to actually do this. the function `renderer.shadowMap.render()` is exposed but calling it directly results in errors as the render state isn't set up correctly.

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ShadowMaterial use just one specific light

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