Testing Intel's New GLSL Mesa Compiler With ATI Graphics
Phoronix: 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.
Performance comparisons would have to be limited to those benchmarks/games, where image quality and complexity is exactly the same. Otherwise the "broken" driver/GLSL compiler may drop textures and oversimplify the situation for later render stages and thus result in higher framerates.
Has been observed multiple times with broken drivers.
Originally Posted by MùPùF
The last 3 articles are awesome Michael, it reminds me very well why I like to visit phoronix.