r0hit0303
c16b4ec7fe
This change scrubs the device related info from GPUAdapterInfo namely vendor, architecture and device. This change adds a patch to the upstream gpu_adapter.cc to intercept right before the moment we create the gpu adapter info, to scrub out these attributes. It was not possible to do it in gpu_adapter_info.cc as it lacked any context around ExecutionContext which was needed to get the farbling level. Below are the final behaviour with different farbling levels after this change: Farbling "off" - No change in behaviour i.e no scrubbing will occur. Farbling "balanced" with WebGLBalancedFingerprintingProtection enabled - Scrub the device related info from GPUAdapterInfo. Farbling "balanced" with WebGLBalancedFingerprintingProtection disabled - No change in behaviour i.e no scrubbing will occur. Farbling "maximum": - Scrub the device related info from GPUAdapterInfo. Note that this is a new behaviour and not to tied to any feature flag. For maximum farbling it makes sense to have the maximum protection. Resolves brave/brave-browser#55677
29 lines
716 B
HTML
29 lines
716 B
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>WebGPU device adapter info test</title>
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<meta charset="utf-8">
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</head>
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<body>
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<script>
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window.gpuAdapterInfoPromise = (async () => {
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if (!navigator.gpu) {
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return 'no-gpu';
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}
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const adapter = await navigator.gpu.requestAdapter({
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featureLevel: 'compatibility',
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});
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if (!adapter) {
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return 'no-adapter';
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}
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const device = await adapter.requestDevice();
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if (!device) {
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return 'no-device';
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}
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const info = device.adapterInfo;
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return info.vendor + ',' + info.architecture + ',' + info.device;
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})();
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</script>
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</body>
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</html>
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