Vanilla webgpu issue for performance test

danrossi · August 4, 2023, 8:45pm

I’ve been trying to help get to the bottom of a resource issue with Webgpu in three. The cpu issue was fixed but it then turned into 30% gpu resource issues. I thought I would try and pull apart what three is doing to see if I need to report an issue with Chrome. I seem to be having an issue before it tries to render complaining about the vertex. Its a c style compile error where it doesn’t really explain the problem.

Vertex attribute slot 2 used in ([ShaderModule "vertex"], entryPoint: main) is not present in the VertexState.

I’m hoping somebody can figure it out so I can confirm there is a problem in Chrome or see where the problem is in three. Three also has a WebGL video texture performance problem where vanilla webgl isn’t a problem after a Chrome fix.

https://danrossi.github.io/three-webgpu-renderer/tests/webgpu_vanilla.html

github.com

danrossi/three-webgpu-renderer/blob/f9eecd0b6ff5d66ef9d5c8619449dd65d2856e53/tests/webgpu_vanilla.html

<!DOCTYPE html>
<html lang="en">

<head>
    <title>WebGPU Basic</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">

    <style>
        body {
            touch-action: none;
        }
    </style>
</head>

<body>
    <script type="importmap">
        {
            "imports": {
                "three": "../three.js/build/three.module.js",

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The working vanilla code with low resources

https://danrossi.github.io/three-webgpu-renderer/tests/webgpu_basic.html

Three with the problem

https://danrossi.github.io/three-webgpu-renderer/tests/webgpu_video_panorama_equirectangular.html

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Vanilla webgpu issue for performance test

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