Archivi del tag: mesa

Dolphin Progress Report: October 2015


A few months ago, we announced our intentions to work on and release Dolphin 5.0 with a new release method. By using a stable branch, we hoped to avoid doing a feature freeze so that devs could both work on new features and continue to stomp out regressions. Unfortunately... that didn't work. Users wanted the newest features to be in Dolphin 5.0, developers were confused on what features needed to go to what branches, and things more or less ended up not working out the way we hoped.

Sometimes, it's best to just admit a mistake and do things right, so, in order to provide users and developers with the clearest path for Dolphin 5.0, we will be restarting the Dolphin 5.0 release process from scratch. That means abandoning the stable branch (along with merging all unique fixes over into Master) and eventually implementing a full feature freeze in order to give time to close all regressions and make Dolphin 5.0 the special release it needs to be.

We hope that users are understanding of the delay. With that, let us continue with our regularly scheduled Progress Report action!

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Dolphin Emulator and OpenGL drivers - Hall of Fame/Shame

Dolphin Emulator and OpenGL drivers - Hall of Fame/Shame

In light of the recent announcements by NVIDIA and AMD in support of Linux for their graphics drivers, we would like to share with the world some of the experience we had developing our open source project, Dolphin, a GameCube and Wii emulator for Windows, Linux, Mac and recently Android.

At the beginning of this year, after the successful release of Dolphin 3.5, Markus Wick (degasus) and Ryan Houdek (Sonicadvance1) started working on a rewrite of Dolphin's OpenGL backend in order to be compliant to the OpenGL ES 3.0 standard. While this rewrite was needed for other reasons (it provides the foundations for very cool optimizations), compatibility with mobile devices and the future Android port of the emulator (now in beta) was one of the key goals. This rewrite was merged into the main Dolphin codebase a few months back and started to be used by tens of thousands of Dolphin users, either on OS X and Linux where it is the only viable graphics backend, or on Windows where it is available alongside our D3D11 graphics backend.

Sadly, using recent, advanced OpenGL features also meant we got to discover how bad some graphics drivers actually are at doing their job. It turns out very few applications use some parts of the OpenGL standard we need to rely on to accurately emulate a GameCube GPU. More than that, on Android, OpenGL ES 3.0 support is extremely recent and only a couple applications on the Play Store use ES 3.0 features.

Here is basically our hall of shame of graphics drivers, sorted by the number of issues we found, how hard it is to report issues to the company and how many bugs were actually fixed.

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