On Tue, 10 Nov 2020 16:38:25 GMT, Kevin Rushforth <k...@openjdk.org> wrote:
>> Change looks ok from a build point of view, but I can't comment on the >> validity and implications of using this key. > > 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. ------------- PR: https://git.openjdk.java.net/jdk/pull/1139
