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| author | Chris Schultz <christopher.schultz@auth0.com> | 2019-04-05 14:08:20 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2019-04-05 15:08:20 -0400 |
| commit | 61601587295f6d0ef1c4084530fe0318e0c72b16 (patch) | |
| tree | 210fc2dc9234721c33f20790dbecfda46f674490 /src/cmd/devdraw | |
| parent | 26c6b2579543e928158fa7d3c00d8b0e04ac270c (diff) | |
| download | plan9port-61601587295f6d0ef1c4084530fe0318e0c72b16.tar.gz plan9port-61601587295f6d0ef1c4084530fe0318e0c72b16.tar.bz2 plan9port-61601587295f6d0ef1c4084530fe0318e0c72b16.zip | |
devdraw: prefer low-power GPU for macOS metal rendering (#231)
Diffstat (limited to 'src/cmd/devdraw')
| -rw-r--r-- | src/cmd/devdraw/cocoa-screen-metal.m | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/src/cmd/devdraw/cocoa-screen-metal.m b/src/cmd/devdraw/cocoa-screen-metal.m index 78110302..21c041a5 100644 --- a/src/cmd/devdraw/cocoa-screen-metal.m +++ b/src/cmd/devdraw/cocoa-screen-metal.m @@ -153,6 +153,7 @@ threadmain(int argc, char **argv) id<MTLLibrary> library; MTLRenderPipelineDescriptor *pipelineDesc; NSError *error; + NSArray *allDevices; const NSWindowStyleMask Winstyle = NSWindowStyleMaskTitled | NSWindowStyleMaskClosable @@ -197,8 +198,18 @@ threadmain(int argc, char **argv) [win setContentView:myContent]; [myContent setWantsLayer:YES]; [myContent setLayerContentsRedrawPolicy:NSViewLayerContentsRedrawOnSetNeedsDisplay]; - - device = MTLCreateSystemDefaultDevice(); + + device = nil; + allDevices = MTLCopyAllDevices(); + for(id mtlDevice in allDevices) { + if ([mtlDevice isLowPower] && ![mtlDevice isRemovable]) { + device = mtlDevice; + break; + } + } + if(!device) + device = MTLCreateSystemDefaultDevice(); + commandQueue = [device newCommandQueue]; layer = (DrawLayer *)[myContent layer]; |