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// Copyright 2016 GFX developers
//
// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
// http://opensource.org/licenses/MIT>, at your option. This file may not be
// copied, modified, or distributed except according to those terms.
use super::{DeviceRef, HeapRef, NSUInteger};
use objc::runtime::{NO, YES};
#[repr(u64)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLPurgeableState {
KeepCurrent = 1,
NonVolatile = 2,
Volatile = 3,
Empty = 4,
}
#[repr(u64)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLCPUCacheMode {
DefaultCache = 0,
WriteCombined = 1,
}
#[repr(u64)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLStorageMode {
Shared = 0,
Managed = 1,
Private = 2,
/// Only available on macos(11.0), macCatalyst(14.0), ios(10.0)
Memoryless = 3,
}
/// Only available on macos(10.15), ios(13.0)
#[repr(u64)]
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
pub enum MTLHazardTrackingMode {
Default = 0,
Untracked = 1,
Tracked = 2,
}
pub const MTLResourceCPUCacheModeShift: NSUInteger = 0;
pub const MTLResourceCPUCacheModeMask: NSUInteger = 0xf << MTLResourceCPUCacheModeShift;
pub const MTLResourceStorageModeShift: NSUInteger = 4;
pub const MTLResourceStorageModeMask: NSUInteger = 0xf << MTLResourceStorageModeShift;
pub const MTLResourceHazardTrackingModeShift: NSUInteger = 8;
pub const MTLResourceHazardTrackingModeMask: NSUInteger = 0x3 << MTLResourceHazardTrackingModeShift;
bitflags! {
#[allow(non_upper_case_globals)]
pub struct MTLResourceOptions: NSUInteger {
const CPUCacheModeDefaultCache = (MTLCPUCacheMode::DefaultCache as NSUInteger) << MTLResourceCPUCacheModeShift;
const CPUCacheModeWriteCombined = (MTLCPUCacheMode::WriteCombined as NSUInteger) << MTLResourceCPUCacheModeShift;
const StorageModeShared = (MTLStorageMode::Shared as NSUInteger) << MTLResourceStorageModeShift;
const StorageModeManaged = (MTLStorageMode::Managed as NSUInteger) << MTLResourceStorageModeShift;
const StorageModePrivate = (MTLStorageMode::Private as NSUInteger) << MTLResourceStorageModeShift;
const StorageModeMemoryless = (MTLStorageMode::Memoryless as NSUInteger) << MTLResourceStorageModeShift;
/// Only available on macos(10.13), ios(10.0)
const HazardTrackingModeDefault = (MTLHazardTrackingMode::Default as NSUInteger) << MTLResourceHazardTrackingModeShift;
/// Only available on macos(10.13), ios(10.0)
const HazardTrackingModeUntracked = (MTLHazardTrackingMode::Untracked as NSUInteger) << MTLResourceHazardTrackingModeShift;
/// Only available on macos(10.15), ios(13.0)
const HazardTrackingModeTracked = (MTLHazardTrackingMode::Tracked as NSUInteger) << MTLResourceHazardTrackingModeShift;
}
}
bitflags! {
/// Options that describe how a graphics or compute function uses an argument buffer’s resource.
///
/// Enabling certain options for certain resources determines whether the Metal driver should
/// convert the resource to another format (for example, whether to decompress a color render target).
pub struct MTLResourceUsage: NSUInteger {
/// An option that enables reading from the resource.
const Read = 1 << 0;
/// An option that enables writing to the resource.
const Write = 1 << 1;
/// An option that enables sampling from the resource.
///
/// Specify this option only if the resource is a texture.
const Sample = 1 << 2;
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
#[repr(C)]
pub struct MTLSizeAndAlign {
pub size: NSUInteger,
pub align: NSUInteger,
}
pub enum MTLResource {}
foreign_obj_type! {
type CType = MTLResource;
pub struct Resource;
pub struct ResourceRef;
}
impl ResourceRef {
pub fn device(&self) -> &DeviceRef {
unsafe { msg_send![self, device] }
}
pub fn label(&self) -> &str {
unsafe {
let label = msg_send![self, label];
crate::nsstring_as_str(label)
}
}
pub fn set_label(&self, label: &str) {
unsafe {
let nslabel = crate::nsstring_from_str(label);
let () = msg_send![self, setLabel: nslabel];
}
}
pub fn cpu_cache_mode(&self) -> MTLCPUCacheMode {
unsafe { msg_send![self, cpuCacheMode] }
}
pub fn storage_mode(&self) -> MTLStorageMode {
unsafe { msg_send![self, storageMode] }
}
pub fn set_purgeable_state(&self, state: MTLPurgeableState) -> MTLPurgeableState {
unsafe { msg_send![self, setPurgeableState: state] }
}
/// Only available on macOS 10.13+ & iOS 10.11+
pub fn allocated_size(&self) -> NSUInteger {
unsafe { msg_send![self, allocatedSize] }
}
/// Only available on macos(10.15), ios(13.0)
pub fn hazard_tracking_mode(&self) -> MTLHazardTrackingMode {
unsafe { msg_send![self, hazardTrackingMode] }
}
/// Only available on macos(10.15), ios(13.0)
pub fn resource_options(&self) -> MTLResourceOptions {
unsafe { msg_send![self, resourceOptions] }
}
/// Only available on macos(10.13), ios(10.0)
pub fn heap(&self) -> &HeapRef {
unsafe { msg_send![self, heap] }
}
/// Only available on macos(10.15), ios(13.0)
pub fn heap_offset(&self) -> NSUInteger {
unsafe { msg_send![self, heapOffset] }
}
/// Only available on macos(10.13), ios(10.0)
pub fn make_aliasable(&self) {
unsafe { msg_send![self, makeAliasable] }
}
/// Only available on macos(10.13), ios(10.0)
pub fn is_aliasable(&self) -> bool {
unsafe {
match msg_send![self, isAliasable] {
YES => true,
NO => false,
_ => unreachable!(),
}
}
}
}
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