1 files changed, 194 insertions, 0 deletions
diff --git a/third_party/rust/metal/src/depthstencil.rs b/third_party/rust/metal/src/depthstencil.rs
new file mode 100644
index 0000000000..5b578e6d46
--- /dev/null
+++ b/third_party/rust/metal/src/depthstencil.rs
@@ -0,0 +1,194 @@
+// 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 crate::DeviceRef;
+use objc::runtime::{NO, YES};
+
+#[repr(u64)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+pub enum MTLCompareFunction {
+    Never = 0,
+    Less = 1,
+    Equal = 2,
+    LessEqual = 3,
+    Greater = 4,
+    NotEqual = 5,
+    GreaterEqual = 6,
+    Always = 7,
+}
+
+#[repr(u64)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+pub enum MTLStencilOperation {
+    Keep = 0,
+    Zero = 1,
+    Replace = 2,
+    IncrementClamp = 3,
+    DecrementClamp = 4,
+    Invert = 5,
+    IncrementWrap = 6,
+    DecrementWrap = 7,
+}
+
+pub enum MTLStencilDescriptor {}
+
+foreign_obj_type! {
+    type CType = MTLStencilDescriptor;
+    pub struct StencilDescriptor;
+    pub struct StencilDescriptorRef;
+}
+
+impl StencilDescriptor {
+    pub fn new() -> Self {
+        unsafe {
+            let class = class!(MTLStencilDescriptor);
+            msg_send![class, new]
+        }
+    }
+}
+
+impl StencilDescriptorRef {
+    pub fn stencil_compare_function(&self) -> MTLCompareFunction {
+        unsafe { msg_send![self, stencilCompareFunction] }
+    }
+
+    pub fn set_stencil_compare_function(&self, func: MTLCompareFunction) {
+        unsafe { msg_send![self, setStencilCompareFunction: func] }
+    }
+
+    pub fn stencil_failure_operation(&self) -> MTLStencilOperation {
+        unsafe { msg_send![self, stencilFailureOperation] }
+    }
+
+    pub fn set_stencil_failure_operation(&self, operation: MTLStencilOperation) {
+        unsafe { msg_send![self, setStencilFailureOperation: operation] }
+    }
+
+    pub fn depth_failure_operation(&self) -> MTLStencilOperation {
+        unsafe { msg_send![self, depthFailureOperation] }
+    }
+
+    pub fn set_depth_failure_operation(&self, operation: MTLStencilOperation) {
+        unsafe { msg_send![self, setDepthFailureOperation: operation] }
+    }
+
+    pub fn depth_stencil_pass_operation(&self) -> MTLStencilOperation {
+        unsafe { msg_send![self, depthStencilPassOperation] }
+    }
+
+    pub fn set_depth_stencil_pass_operation(&self, operation: MTLStencilOperation) {
+        unsafe { msg_send![self, setDepthStencilPassOperation: operation] }
+    }
+
+    pub fn read_mask(&self) -> u32 {
+        unsafe { msg_send![self, readMask] }
+    }
+
+    pub fn set_read_mask(&self, mask: u32) {
+        unsafe { msg_send![self, setReadMask: mask] }
+    }
+
+    pub fn write_mask(&self) -> u32 {
+        unsafe { msg_send![self, writeMask] }
+    }
+
+    pub fn set_write_mask(&self, mask: u32) {
+        unsafe { msg_send![self, setWriteMask: mask] }
+    }
+}
+
+pub enum MTLDepthStencilDescriptor {}
+
+foreign_obj_type! {
+    type CType = MTLDepthStencilDescriptor;
+    pub struct DepthStencilDescriptor;
+    pub struct DepthStencilDescriptorRef;
+}
+
+impl DepthStencilDescriptor {
+    pub fn new() -> Self {
+        unsafe {
+            let class = class!(MTLDepthStencilDescriptor);
+            msg_send![class, new]
+        }
+    }
+}
+
+impl DepthStencilDescriptorRef {
+    pub fn depth_compare_function(&self) -> MTLCompareFunction {
+        unsafe { msg_send![self, depthCompareFunction] }
+    }
+
+    pub fn set_depth_compare_function(&self, func: MTLCompareFunction) {
+        unsafe { msg_send![self, setDepthCompareFunction: func] }
+    }
+
+    pub fn depth_write_enabled(&self) -> bool {
+        unsafe {
+            match msg_send![self, isDepthWriteEnabled] {
+                YES => true,
+                NO => false,
+                _ => unreachable!(),
+            }
+        }
+    }
+
+    pub fn set_depth_write_enabled(&self, enabled: bool) {
+        unsafe { msg_send![self, setDepthWriteEnabled: enabled] }
+    }
+
+    pub fn front_face_stencil(&self) -> Option<&StencilDescriptorRef> {
+        unsafe { msg_send![self, frontFaceStencil] }
+    }
+
+    pub fn set_front_face_stencil(&self, descriptor: Option<&StencilDescriptorRef>) {
+        unsafe { msg_send![self, setFrontFaceStencil: descriptor] }
+    }
+
+    pub fn back_face_stencil(&self) -> Option<&StencilDescriptorRef> {
+        unsafe { msg_send![self, backFaceStencil] }
+    }
+
+    pub fn set_back_face_stencil(&self, descriptor: Option<&StencilDescriptorRef>) {
+        unsafe { msg_send![self, setBackFaceStencil: descriptor] }
+    }
+
+    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 enum MTLDepthStencilState {}
+
+foreign_obj_type! {
+    type CType = MTLDepthStencilState;
+    pub struct DepthStencilState;
+    pub struct DepthStencilStateRef;
+}
+
+impl DepthStencilStateRef {
+    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)
+        }
+    }
+}