Testing OpenGL 4.1 With An AMD Cypress GPU On The Latest Open-Source Driver
Written by Michael Larabel in AMD on 30 January 2016 at 08:19 PM EST. 27 Comments
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When it comes to OpenGL 4 support on the AMD R600 Gallium3D driver for pre-GCN graphics cards, currently the only R600g-supported cards advertising OpenGL 4.1 right now are the Radeon HD 5800 "Cypress" and Radeon HD 6900 "Cayman" series. Here are some tests done with OpenGL 4.1 on a Radeon HD 5830 compared to Cayman and various GPUs with the RadeonSI Gallium3D driver.

When OpenGL 4.1 was exposed in R600g for the select cards, I ran several benchmarks from my Radeon HD 6950 Cayman. I didn't have the chance to run any GL 4.1 tests with the Radeon HD 5830 Cypress since it was lodged away in a 4U system racked up for daily benchmarking. However, in cleaning and organizing some of the system racks this weekend, I pulled out the Radeon HD 5830 for running some tests.
The HD 5830 and other open-source AMD OpenGL 4.1-supporting cards were tested with Linux 4.5 and Mesa 11.2-devel from the Padoka PPA on Ubuntu 15.10.

OpenGL 4.1 was indeed working for this AMD Cypress GPU!
The HD 5830 was on par with the other graphics processors for DiRT Showdown in being largely CPU bound.
The HD 5830 comes in at just under 30 FPS when running Metro Last Light Redux at 1080p.
While not using OpenGL 4, here's the Counter-Strike: Global Offensive results just for showing a greater comparison of these GPUs. You can further analyze the results or run your own comparison via this OpenBenchmarking.org result file. There are also more Linux OpenGL benchmark results via today's More AMDGPU & Radeon Benchmarks Of Linux 4.5 With Mesa 11.2 Git.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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