WebGPU: Logarithmic Depth Buffer Rename/Revision + GTAONode Fixes #29870
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…ZToLogarithmicDepth' and modified it to expect a negative viewZ value in order maintain consistency with 'viewZToOrthographicDepth' and 'viewZToPerspectiveDepth' 2. Added function 'logarithmicDepthToViewZ' 3. Fixed AO not working when 'logarithmicDepthBuffer' is true
📦 Bundle sizeFull ESM build, minified and gzipped.
🌳 Bundle size after tree-shakingMinimal build including a renderer, camera, empty scene, and dependencies.
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PoseidonEnergy
changed the title
Clean up.
Clean up.
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@PoseidonEnergy Tested the change locally and it works as expected! Awesome PR 👍 ! |
Add `setGroup()`.
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@PoseidonEnergy Your fiddle for testing the TSL functions is super interesting! Somewhat related: The project is actually looking for a way to unit test TSL functions (see #28708). It would be great to establish a basic procedure in our current unit tests (see https://github.com/mrdoob/three.js/tree/dev/test/unit) for testing TSL modules in isolated routines. |
| // TODO: How do we get the cameraNear/cameraFar nodes to use the shadow camera so we don't have to declare local ones here? | ||
| const cameraNearLocal = uniform( 'float' ).onRenderUpdate( () => shadow.camera.near ); | ||
| const cameraFarLocal = uniform( 'float' ).onRenderUpdate( () => shadow.camera.far ); | ||
| const cameraNearLocal = reference( 'near', 'float', shadow.camera ).setGroup( renderGroup ); |
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Just one question, did the previous approach using uniform present any problems? Was there any specific reason for changing to reference?
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I did only switch to reference() for consistency reasons since this API is used in the rest of the file.
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Fixed #29797.
perspectiveDepthToLogarithmicDepthtoviewZToLogarithmicDepthand modified it to expect a negativeviewZvalue in order maintain consistency withviewZToOrthographicDepthandviewZToPerspectiveDepthSee new curves here on Desmos: https://www.desmos.com/calculator/uyqk0vex1u
logarithmicDepthToViewZfor use in GTAONode.jslogarithmicDepthBufferistrueRelated issue: #29797
Description
The name of the function
perspectiveDepthToLogarithmicDepthis misleading because it actually expects aviewZvalue (i.e.positionView.z), and NOT a depth value (i.e. a number between 0 and 1). In addition, theviewZvalue that it previously expected had to be a positive number, which differed from its sister functionsviewZToOrthographicDepthandviewZToPerspectiveDepth, which both expect a negativeviewZ. In this pull request, the function in question is now namedviewZToLogarithmicDepth, and expects a negativeviewZlike the rest in its family.AO was not working properly in the webgpu_postprocessing_ao example when
logarithmicDepthBufferwastrue. The functionlogarithmicDepthToViewZwas added to ViewportDepthNode.js, so it can now be used in GTAONode.js to obtain the proper depth values required for AO.Here is a JSFiddle I made to demonstrate how
viewZToLogarithmicDepthrelates to the rest of the depth functions:https://jsfiddle.net/go6f2y4u
And here is an animation of the JSFiddle: