Mesa Patches For Bringing Intel Haswell To OpenGL 4.2

[andrei_me]

... and less CPU overhead. Considering how weak Intel GPUs are, CPU overhead has never really been a big deal.

IIRC, the lower CPU overhead improves the thermal budget of the iGPU, you can find some Intel videos before vulkan oficial launch where they show that in action

[ebassi]

The nice thing about the availability of a higher GL version is that it allows the GTK+ OpenGL renderer to share a bunch of logic and shaders with the Vulkan renderer, and to keep the legacy GL code self-contained. Performance is good enough in any case, but code reuse makes maintainability easier.

[caligula]

Intel also has a tendency to ignore older products regardless of their capabilities. I'm guessing this is intentional, as it forces people to upgrade. Intel needs every excuse they can get to convince people to buy a CPU with a 5% performance improvement.

The iGPU improvements are definitely a lot more than 5% each time. So you're saying that the Iris Pro graphics are only few percent faster than e.g. HD Graphics 3000? Iris Pro Graphics 580 does 1152 GFLOPS, HD Graphics 3000 does 129.6. That's 4 years and 780% improvement.

[schmidtbag]

The iGPU improvements are definitely a lot more than 5% each time. So you're saying that the Iris Pro graphics are only few percent faster than e.g. HD Graphics 3000? Iris Pro Graphics 580 does 1152 GFLOPS, HD Graphics 3000 does 129.6. That's 4 years and 780% improvement.

Yes, I agree the IGP definitely improves. But people don't buy Intel products for their GPUs, regardless of whether you intend to use it or not.