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Display Drivers

Testing Intel's New GLSL Mesa Compiler With ATI Graphics

With Intel developers earlier this week expressing their plans to merge their new GLSL compiler into Mesa by the end of next month, which besides providing various shader compiler optimizations and being a better framework going forward is already set to correct 50+ bugs, we decided to try out this Mesa "GLSL2" compiler. However, as Intel explicitly stated they haven't tested this new GL Shading Language compiler that's been in development for months with any other hardware drivers (or even Gallium3D) besides their own Intel DRI driver, we decided to see how well it works with the open-source Radeon classic and Gallium3D drivers. It ended up being both good and bad.
24 July 2010 - 10 Comments

ATI R300 Mesa, Gallium3D Compared To Catalyst

Last quarter we compared the Catalyst and Mesa driver performance using an ATI Radeon HD 4830 graphics card, compared the Gallium3D and classic Mesa drivers for ATI Radeon X1000 series hardware, and ultimately found that even with the ATI R500 class graphics cards the open-source driver is still playing catch-up to AMD's proprietary Catalyst Linux driver. In this article we have similar tests to show the performance disparity with ATI's much older R300 class hardware. Even with Radeon hardware that has had open-source support much longer, their drivers are not nearly as mature as an outdated Catalyst driver in the same configuration.
14 July 2010 - 84 Comments

LLVMpipe Still Is Slow At Running OpenGL On The CPU

Two months ago we published our initial benchmarks of LLVMpipe, the Gallium3D driver that accelerated commands on the CPU rather than any GPU and unlike other Linux software rasterizers is much faster due to leveraging LLVM (the Low-Level Virtual Machine) on the back-end. Since then we have published new ATI Gallium3D driver benchmarks and yesterday put out Nouveau Gallium3D driver benchmarks, so today we are providing updated LLVMpipe driver results to show how well Gallium3D's LLVMpipe driver can accelerate your OpenGL games with a modern processor.
29 June 2010 - 36 Comments

Benchmarks Of The Latest Nouveau Gallium3D Driver

In recent weeks we have published a number of benchmarks showcasing the ATI Gallium3D driver that supports the R300-R500 graphics processors as this open-source driver has been maturing at such an exciting rate with impressive changes and measurable performance gains over a short period of time. This ATI Gallium3D driver in most instances is outperforming the classic Radeon Mesa driver that supports up through the ATI Radeon X1000 series graphics cards. However, how is the Nouveau driver maturing that supports NVIDIA's wide-range of GeForce graphics cards? In February we published some Nouveau Gallium3D benchmarks, but now we have a fresh set of numbers from three different NVIDIA graphics cards and we also compare the Nouveau Gallium3D driver to NVIDIA's proprietary Linux driver.
28 June 2010 - 59 Comments

Intel's UXA 2D Performance Improvements

In this month's AMD Catalyst 10.6 driver update for Linux they rolled out the ATI 2D Acceleration Architecture, which pleased many ATI Radeon customers, but they aren't the only ones working towards improved 2D support. Intel's open-source engineers have been working to optimize their xf86-video-intel DDX driver 2D performance with much of this work being clearly shown in the Intel 2.12 X.Org driver update. Here are some benchmarks showing the significant performance gains brought by this open-source Intel driver.
25 June 2010 - 5 Comments

How The ATI Catalyst Driver Has Matured Since The RV770 Launch

It has been two years since the ATI Radeon HD 4800 (RV770) series launched so we have gone back since that monumental hardware launch and have re-tested each Catalyst driver release since then to see how the performance has changed for the ATI Radeon HD 4850 graphics card. The Catalyst driver has certainly matured over the course of two years in speeding up the OpenGL performance with this hardware along with bringing new features to their proprietary driver, but it is not exactly smooth sailing.
22 June 2010 - 36 Comments

Is AMD's New 2D Acceleration Architecture Still Slow?

Earlier this week AMD released the Catalyst 10.6 driver that on the Linux side of the table had finally made use by default of their new 2D acceleration architecture, offered official support for Red Hat Enterprise Linux 5.5, and formalized their OpenGL 3.3/4.0 support. Since the release of the Catalyst 10.6 Linux driver, we have been running a new set of tests on their new ATI 2D acceleration architecture, but the results are not what you may expect when compared to the open-source ATI Linux driver.
20 June 2010 - 38 Comments

Where An Open ATI Driver Beats The Catalyst Driver

A number of weeks back a set of benchmarks were published showing even the latest open-source ATI 3D driver is still no match to an old Catalyst driver and that even Gallium3D lags behind the Catalyst driver for those interested in OpenGL gaming. However, in other areas the open-source ATI driver stack is beginning to win by measurable amounts.
19 June 2010 - 31 Comments

The Rate of ATI Gallium3D Changes Is Impressive

Last week prior to heading over to Germany for LinuxTag, I had ran a new set of ATI R500 Gallium3D benchmarks with an ATI Radeon X1950PRO graphics card and comparing the latest Mesa/Gallium3D graphics driver performance in the Mesa 7.9-devel Git code with both the Gallium3D and classic Mesa DRI drivers to the older Mesa stack found in Ubuntu 10.04 LTS. The ATI "R300g" driver as its known continues to advance, and over the past week this driver has pushed forward even more. Here is another set of ATI Gallium3D tests.
18 June 2010 - 14 Comments

Talking About Kernel Mode-Setting

There was a talk last week at LinuxTag in Berlin by Egbert Eich about kernel mode-setting and the DRM (Direct Rendering Manager) graphics stack on Linux. Egbert is, of course, a long-time X developer and openSUSE developer at Novell who was one of the masterminds behind the RadeonHD graphics driver and has worked on various pieces of X over the years. In Egbert's brief KMS talk he briefly covered the history of the Linux graphics stack, the user and kernel-space APIs for DRM mode-setting, and related topics. For those that missed out on his talk, below are his slides.
16 June 2010 - 5 Comments

660 display drivers articles published on Phoronix.
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