On Tue, 17 Nov 2020 18:55:51 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:
>> I ran a 3D lighting test that is designed to be a GPU stress test. It's a >> worst case, to be sure, but it take 10 times as long to render with the >> integrated GPU as it does with the discrete GPU: >> >> **attenuation.LightingSample: 500 large quads** >> discrete GPU: 23.5 fps >> integrated GPU: 2.34 fps >> >> In a more realistic example of drawing a large number of 2D vectors, it runs >> 35% slower with the integrated GPU: >> >> **Vector charting test, oval clip** >> discrete GPU: 41.1 fps >> integrated GPU: 26.6 fps >> >> I see similar results in the performance numbers you listed above. >> >> An application developer who packages up their JDK, for example, using >> jpackage, can make the decision for themselves. Application developers who >> rely on the JDK as delivered will get whatever we choose as the default. So >> we need to be sure that the benefit of doing this justifies the performance >> hit. > >> > @kevinrushforth @prrace could you please review? >> >> As we discussed yesterday, it is reviewed but not ready to be approved. >> We are waiting for a reply from Apple. > > @prrace > We are waiting for it for three months already. If it is possible then not > sure why other applications did not found any possible ways to force one > specific GPU. What we are wating for? @mrserb @prrace what is a back up plan in case we will not have a reply from Apple? (as we do not have it for 4! months). Definitely we need a plan B ------------- PR: https://git.openjdk.java.net/jdk/pull/1139
