1 files changed, 110 insertions, 0 deletions
diff --git a/third_party/rust/metal/src/heap.rs b/third_party/rust/metal/src/heap.rs
new file mode 100644
index 0000000000..9adb51c681
--- /dev/null
+++ b/third_party/rust/metal/src/heap.rs
@@ -0,0 +1,110 @@
+// 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::*;
+
+use cocoa_foundation::foundation::NSUInteger;
+
+pub enum MTLHeap {}
+
+foreign_obj_type! {
+    type CType = MTLHeap;
+    pub struct Heap;
+    pub struct HeapRef;
+}
+
+impl HeapRef {
+    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] }
+    }
+
+    pub fn size(&self) -> NSUInteger {
+        unsafe { msg_send![self, size] }
+    }
+
+    pub fn used_size(&self) -> NSUInteger {
+        unsafe { msg_send![self, usedSize] }
+    }
+
+    pub fn max_available_size(&self, alignment: NSUInteger) -> NSUInteger {
+        unsafe { msg_send![self, maxAvailableSizeWithAlignment: alignment] }
+    }
+
+    pub fn new_buffer(&self, length: u64, options: MTLResourceOptions) -> Option<Buffer> {
+        unsafe {
+            let ptr: *mut MTLBuffer = msg_send![self, newBufferWithLength:length
+                                                                  options:options];
+            if !ptr.is_null() {
+                Some(Buffer::from_ptr(ptr))
+            } else {
+                None
+            }
+        }
+    }
+
+    pub fn new_texture(&self, descriptor: &TextureDescriptorRef) -> Option<Texture> {
+        unsafe {
+            let ptr: *mut MTLTexture = msg_send![self, newTextureWithDescriptor: descriptor];
+            if !ptr.is_null() {
+                Some(Texture::from_ptr(ptr))
+            } else {
+                None
+            }
+        }
+    }
+}
+
+pub enum MTLHeapDescriptor {}
+
+foreign_obj_type! {
+    type CType = MTLHeapDescriptor;
+    pub struct HeapDescriptor;
+    pub struct HeapDescriptorRef;
+}
+
+impl HeapDescriptor {
+    pub fn new() -> Self {
+        unsafe {
+            let class = class!(MTLHeapDescriptor);
+            msg_send![class, new]
+        }
+    }
+}
+
+impl HeapDescriptorRef {
+    pub fn cpu_cache_mode(&self) -> MTLCPUCacheMode {
+        unsafe { msg_send![self, cpuCacheMode] }
+    }
+
+    pub fn set_cpu_cache_mode(&self, mode: MTLCPUCacheMode) {
+        unsafe { msg_send![self, setCpuCacheMode: mode] }
+    }
+
+    pub fn storage_mode(&self) -> MTLStorageMode {
+        unsafe { msg_send![self, storageMode] }
+    }
+
+    pub fn set_storage_mode(&self, mode: MTLStorageMode) {
+        unsafe { msg_send![self, setStorageMode: mode] }
+    }
+
+    pub fn size(&self) -> NSUInteger {
+        unsafe { msg_send![self, size] }
+    }
+
+    pub fn set_size(&self, size: NSUInteger) {
+        unsafe { msg_send![self, setSize: size] }
+    }
+}