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Unavailable hardware acceleration with Radeon HD 6870
Reported by
evange...@foutrelis.com,
Jun 6 2017
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Issue descriptionUserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.86 Safari/537.36 Steps to reproduce the problem: 0. Have an AMD Radeon GPU 1. Go to chrome://gpu/ 2. Check Graphics Feature Status 3. All say "Software only, hardware acceleration unavailable" What is the expected behavior? Hardware acceleration should be working like it did in Chromium 58 What went wrong? Chromium is incorrectly detecting the following problem: "ATI/AMD cards with older drivers in Linux are crash-prone" This is happening, most likely, because of the addition of SwiftShader. There needs to be an exception for it in gpu/config/software_rendering_list.json. Chromium 58 works fine since it's using the Mesa driver for which there is an exception in the above list. Did this work before? Yes 58.0.3029.110 Chrome version: 59.0.3071.86 Channel: stable OS Version: Flash Version: This should affect both Chrome 59 and Chromium 59. It makes for a choppy browsing experience.
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Jun 6 2017
I'm attaching two dumps of "chrome://gpu/": gpu-mesa.html -- this is from Chromium 59 built with 'enable_swiftshader=false' gpu-swiftshader -- this is from Chromium 59 with SwiftShader enabled (the default)
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Jun 6 2017
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Jun 6 2017
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Jun 6 2017
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Jun 6 2017
While this is tied to SwiftShader, the blacklisting of the Radeon HD 6870 on Linux is probably not caused by SwiftShader. In the gpu-mesa.html file, WebGL is marked as "Hardware accelerated" and SwiftShader is only enabled if WebGL is blacklisted on a given hardware, so something else caused Chromium to disable WebGL before SwiftShader was enabled.
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Jun 6 2017
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Comment 1 by evange...@foutrelis.com
, Jun 6 2017