1 files changed, 157 insertions, 0 deletions
diff --git a/third_party/rust/metal/src/sampler.rs b/third_party/rust/metal/src/sampler.rs
new file mode 100644
index 0000000000..3dd871a3b4
--- /dev/null
+++ b/third_party/rust/metal/src/sampler.rs
@@ -0,0 +1,157 @@
+// 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::{depthstencil::MTLCompareFunction, DeviceRef, NSUInteger};
+
+#[repr(u64)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+pub enum MTLSamplerMinMagFilter {
+    Nearest = 0,
+    Linear = 1,
+}
+
+#[repr(u64)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+pub enum MTLSamplerMipFilter {
+    NotMipmapped = 0,
+    Nearest = 1,
+    Linear = 2,
+}
+
+#[repr(u64)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+pub enum MTLSamplerAddressMode {
+    ClampToEdge = 0,
+    MirrorClampToEdge = 1,
+    Repeat = 2,
+    MirrorRepeat = 3,
+    ClampToZero = 4,
+    ClampToBorderColor = 5,
+}
+
+#[repr(u64)]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)]
+pub enum MTLSamplerBorderColor {
+    TransparentBlack = 0,
+    OpaqueBlack = 1,
+    OpaqueWhite = 2,
+}
+
+pub enum MTLSamplerDescriptor {}
+
+foreign_obj_type! {
+    type CType = MTLSamplerDescriptor;
+    pub struct SamplerDescriptor;
+    pub struct SamplerDescriptorRef;
+}
+
+impl SamplerDescriptor {
+    pub fn new() -> Self {
+        unsafe {
+            let class = class!(MTLSamplerDescriptor);
+            msg_send![class, new]
+        }
+    }
+}
+
+impl SamplerDescriptorRef {
+    pub fn set_min_filter(&self, filter: MTLSamplerMinMagFilter) {
+        unsafe { msg_send![self, setMinFilter: filter] }
+    }
+
+    pub fn set_mag_filter(&self, filter: MTLSamplerMinMagFilter) {
+        unsafe { msg_send![self, setMagFilter: filter] }
+    }
+
+    pub fn set_mip_filter(&self, filter: MTLSamplerMipFilter) {
+        unsafe { msg_send![self, setMipFilter: filter] }
+    }
+
+    pub fn set_address_mode_s(&self, mode: MTLSamplerAddressMode) {
+        unsafe { msg_send![self, setSAddressMode: mode] }
+    }
+
+    pub fn set_address_mode_t(&self, mode: MTLSamplerAddressMode) {
+        unsafe { msg_send![self, setTAddressMode: mode] }
+    }
+
+    pub fn set_address_mode_r(&self, mode: MTLSamplerAddressMode) {
+        unsafe { msg_send![self, setRAddressMode: mode] }
+    }
+
+    pub fn set_max_anisotropy(&self, anisotropy: NSUInteger) {
+        unsafe { msg_send![self, setMaxAnisotropy: anisotropy] }
+    }
+
+    pub fn set_compare_function(&self, func: MTLCompareFunction) {
+        unsafe { msg_send![self, setCompareFunction: func] }
+    }
+
+    #[cfg(feature = "private")]
+    pub unsafe fn set_lod_bias(&self, bias: f32) {
+        msg_send![self, setLodBias: bias]
+    }
+
+    pub fn set_lod_min_clamp(&self, clamp: f32) {
+        unsafe { msg_send![self, setLodMinClamp: clamp] }
+    }
+
+    pub fn set_lod_max_clamp(&self, clamp: f32) {
+        unsafe { msg_send![self, setLodMaxClamp: clamp] }
+    }
+
+    pub fn set_lod_average(&self, enable: bool) {
+        unsafe { msg_send![self, setLodAverage: enable] }
+    }
+
+    pub fn set_normalized_coordinates(&self, enable: bool) {
+        unsafe { msg_send![self, setNormalizedCoordinates: enable] }
+    }
+
+    pub fn set_support_argument_buffers(&self, enable: bool) {
+        unsafe { msg_send![self, setSupportArgumentBuffers: enable] }
+    }
+
+    pub fn set_border_color(&self, color: MTLSamplerBorderColor) {
+        unsafe { msg_send![self, setBorderColor: color] }
+    }
+
+    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 MTLSamplerState {}
+
+foreign_obj_type! {
+    type CType = MTLSamplerState;
+    pub struct SamplerState;
+    pub struct SamplerStateRef;
+}
+
+impl SamplerStateRef {
+    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)
+        }
+    }
+}