mtl-rs 0.1.12

Rust bindings for Apple's Metal API
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use objc2::{
    extern_class, extern_conformance, extern_methods, msg_send,
    rc::{Allocated, Retained},
    runtime::{NSObject, ProtocolObject},
};
use objc2_foundation::{CopyingHelper, NSCopying, NSObjectProtocol, NSString};

use super::MTLCounterSet;
use crate::resource::MTLStorageMode;

extern_class!(
    /// Object to represent the counter state.
    #[unsafe(super(NSObject))]
    #[derive(Debug, PartialEq, Eq, Hash)]
    pub struct MTLCounterSampleBufferDescriptor;
);

extern_conformance!(
    unsafe impl NSCopying for MTLCounterSampleBufferDescriptor {}
);

unsafe impl CopyingHelper for MTLCounterSampleBufferDescriptor {
    type Result = Self;
}

extern_conformance!(
    unsafe impl NSObjectProtocol for MTLCounterSampleBufferDescriptor {}
);

impl MTLCounterSampleBufferDescriptor {
    extern_methods!(
        #[unsafe(method(counterSet))]
        #[unsafe(method_family = none)]
        pub fn counter_set(&self) -> Option<Retained<ProtocolObject<dyn MTLCounterSet>>>;

        #[unsafe(method(setCounterSet:))]
        #[unsafe(method_family = none)]
        pub fn set_counter_set(
            &self,
            counter_set: Option<&ProtocolObject<dyn MTLCounterSet>>,
        );

        /// The storage mode for the sample buffer. Only `Shared` and `Private` may be used.
        #[unsafe(method(storageMode))]
        #[unsafe(method_family = none)]
        pub fn storage_mode(&self) -> MTLStorageMode;

        #[unsafe(method(setStorageMode:))]
        #[unsafe(method_family = none)]
        pub fn set_storage_mode(
            &self,
            mode: MTLStorageMode,
        );

        #[unsafe(method(sampleCount))]
        #[unsafe(method_family = none)]
        pub fn sample_count(&self) -> usize;

        #[unsafe(method(setSampleCount:))]
        #[unsafe(method_family = none)]
        pub fn set_sample_count(
            &self,
            sample_count: usize,
        );
    );

    pub fn label(&self) -> String {
        let label: Retained<NSString> = unsafe { msg_send![self, label] };
        label.to_string()
    }

    pub fn set_label(
        &self,
        label: &str,
    ) {
        unsafe {
            let _: () = msg_send![self, setLabel: &*NSString::from_str(label)];
        }
    }
}

impl MTLCounterSampleBufferDescriptor {
    extern_methods!(
        #[unsafe(method(init))]
        #[unsafe(method_family = init)]
        pub fn init(this: Allocated<Self>) -> Retained<Self>;

        #[unsafe(method(new))]
        #[unsafe(method_family = new)]
        pub fn new() -> Retained<Self>;
    );
}