QRhiMetalInitParams Struct
Metal specific initialization parameters. More...
| Header: | #include <QRhiMetalInitParams> |
| Since: | Qt 6.6 |
| Inherits: | QRhiInitParams |
Detailed Description
Note: This is a RHI API with limited compatibility guarantees, see QRhi for details.
A Metal-based QRhi needs no special parameters for initialization.
QRhiMetalInitParams params; rhi = QRhi::create(QRhi::Metal, ¶ms);
Note: Metal API validation cannot be enabled programmatically by the QRhi. Instead, either run the debug build of the application in XCode, by generating a .xcodeproj file via cmake -G Xcode, or set the environment variable METAL_DEVICE_WRAPPER_TYPE=1. The variable needs to be set early on in the environment, perferably before starting the process; attempting to set it at QRhi creation time is not functional in practice. (too late probably)
Note: QRhiSwapChain can only target QWindow instances that have their surface type set to QSurface::MetalSurface.
Working with existing Metal devices
When interoperating with another graphics engine, it may be necessary to get a QRhi instance that uses the same Metal device. This can be achieved by passing a pointer to a QRhiMetalNativeHandles to QRhi::create(). The device must be set to a non-null value then. Optionally, a command queue object can be specified as well.
The QRhi does not take ownership of any of the external objects.