David Airlie On Tweaking RADV For Better Performance In Deferred Demo
Written by Michael Larabel in Radeon on 10 July 2017 at 06:07 AM EDT. 29 Comments
RADEON --
David Airlie has written a post on his new blog concerning a deferred rendering demo in Vulkan and how he managed to take the RADV driver from about half the speed of the AMDGPU-PRO Vulkan driver up to performance parity.

The RADV performance for this Vulkan deferred rendering demo was improved by no longer doing clear color eliminations on offscreen surfaces and then the rest of the gain was made by figuring out some "magic" values in surface addresses. That's what was covered recently in David Airlie Exploring MRT Performance Optimization For RADV.

Now this Vulkan demo is running at the same speed between RADV and AMDGPU-PRO, but it's not yet clear if this will help the performance of any real-world Vulkan Linux games. I'll run some benchmarks soon. Airlie's post can be read on his new blog.

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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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