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Bug 5440 - MacCatalyst build failures
Summary: MacCatalyst build failures
Status: RESOLVED FIXED
Alias: None
Product: SDL
Classification: Unclassified
Component: build (show other bugs)
Version: HG 2.0
Hardware: ARM macOS 10.15
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2021-01-02 22:58 UTC by C.W. Betts
Modified: 2021-01-03 18:33 UTC (History)
0 users

See Also:

Attachments
Mac Catalyst build patch (4.38 KB, patch)
2021-01-02 22:58 UTC, C.W. Betts 		Details | Diff
Set Metal as the default renderer on Mac Catalyst (921 bytes, patch)
2021-01-02 23:57 UTC, C.W. Betts 		Details | Diff
View All Add an attachment (proposed patch, testcase, etc.)

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Description C.W. Betts 2021-01-02 22:58:09 UTC 
Created attachment 4632 [details]
Mac Catalyst build patch

I tested building commit http://hg.libsdl.org/SDL/rev/55cdb379e866 on Mac Catalyst and found some issues:

* MTLFeatureSet_iOS_* enums aren't available under Mac Catalyst.
* OpenGL ES is unavailable under Mac Catalyst.
* Some Metal features are available under Catalyst but not iOS, such as displaySyncEnabled.

Attaching a patch that will make SDL2 build for Mac Catalyst.
Comment 1 C.W. Betts 2021-01-02 23:56:23 UTC 
Poking around, I also discovered that, due to defaulting to OpenGL, none of the example apps will show a screen. For Catalyst, Metal needs to be the default renderer. I edited video.c around line 1477 to make Metal the default renderer on Mac Catalyst and it worked fine.
Comment 2 C.W. Betts 2021-01-02 23:57:38 UTC 
Created attachment 4633 [details]
Set Metal as the default renderer on Mac Catalyst
Comment 3 C.W. Betts 2021-01-03 03:31:22 UTC 
Another issue I've discovered: The UI is unresponsive (beachball), but it still draws. I don't know how this will interact with games, though.
Comment 4 Sam Lantinga 2021-01-03 18:33:49 UTC 
Patch tweaked and added, thanks!
https://hg.libsdl.org/SDL/rev/50f265303173