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33 lines
968 B
C
33 lines
968 B
C
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/**
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* Objective-C++ bridge between WgpuViewportWindow (pure C++) and Cocoa /
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* QuartzCore (Objective-C). Compiled only on macOS — see CMakeLists.txt.
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*
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* Qt's QWindow::winId() returns the backing NSView* (as a WId) on macOS;
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* we need a CAMetalLayer attached to that view to hand to wgpu-native
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* via WGPUSurfaceSourceMetalLayer. Doing that requires Objective-C, so
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* the actual layer attach lives in WgpuMetalSurface_mac.mm.
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*/
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#ifndef WGPU_METAL_SURFACE_MAC_H
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#define WGPU_METAL_SURFACE_MAC_H
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#if defined(__APPLE__)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/// Ensures the given NSView has a CAMetalLayer as its backing layer.
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/// Returns the CAMetalLayer pointer (`void*` so callers don't need to
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/// pull QuartzCore into their TU); the layer is owned by the NSView.
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/// Returns nullptr if `nsview_ptr` is null.
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void* wgpu_macos_attach_metal_layer(void* nsview_ptr);
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#ifdef __cplusplus
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}
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#endif
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#endif // __APPLE__
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#endif // WGPU_METAL_SURFACE_MAC_H
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