diff --git a/wgpu-native/src/conv.rs b/wgpu-native/src/conv.rs
index 7b0c4bfc1b..f9b99b4906 100644
--- a/wgpu-native/src/conv.rs
+++ b/wgpu-native/src/conv.rs
@@ -256,3 +256,34 @@ pub(crate) fn map_texture_dimension_size(dimension: resource::TextureDimension,
         D3 => H::D3(width, height, depth),
     }
 }
+
+pub(crate) fn map_texture_usage_flags(flags: u32, format: hal::format::Format) -> hal::image::Usage {
+    use hal::image::Usage as H;
+    use resource::{
+        TextureUsageFlags_TRANSFER_SRC, TextureUsageFlags_TRANSFER_DST, TextureUsageFlags_SAMPLED,
+        TextureUsageFlags_STORAGE, TextureUsageFlags_OUTPUT_ATTACHMENT,
+    };
+    let mut value = H::empty();
+    if 0 != flags & TextureUsageFlags_TRANSFER_SRC {
+        value |= H::TRANSFER_SRC;
+    }
+    if 0 != flags & TextureUsageFlags_TRANSFER_DST {
+        value |= H::TRANSFER_DST;
+    }
+    if 0 != flags & TextureUsageFlags_SAMPLED {
+        value |= H::SAMPLED;
+    }
+    if 0 != flags & TextureUsageFlags_STORAGE {
+        value |= H::STORAGE;
+    }
+    if 0 != flags & TextureUsageFlags_OUTPUT_ATTACHMENT {
+        if format.surface_desc().aspects.intersects(hal::format::Aspects::DEPTH | hal::format::Aspects::STENCIL) {
+            value |= H::DEPTH_STENCIL_ATTACHMENT;
+        } else {
+            value |= H::COLOR_ATTACHMENT;
+        }
+    }
+    // Note: TextureUsageFlags::Present does not need to be handled explicitly
+    // TODO: HAL Transient Attachment, HAL Input Attachment
+    value
+}
\ No newline at end of file
diff --git a/wgpu-native/src/resource.rs b/wgpu-native/src/resource.rs
index ac4486aee9..8154ef81ae 100644
--- a/wgpu-native/src/resource.rs
+++ b/wgpu-native/src/resource.rs
@@ -50,18 +50,22 @@ pub enum TextureFormat {
     D32FloatS8Uint = 3,
 }
 
-bitflags! {
-    #[repr(transparent)]
-    pub struct TextureUsageFlags: u32 {
-        const NONE = 0;
-        const TRANSFER_SRC = 1;
-        const TRANSFER_DST = 2;
-        const SAMPLED = 4;
-        const STORAGE = 8;
-        const OUTPUT_ATTACHMENT = 16;
-        const PRESENT = 32;
-    }
-}
+// TODO: bitflags
+pub type TextureUsageFlags = u32;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_NONE: u32 = 0;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_TRANSFER_SRC: u32 = 1;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_TRANSFER_DST: u32 = 2;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_SAMPLED: u32 = 4;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_STORAGE: u32 = 8;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_OUTPUT_ATTACHMENT: u32 = 16;
+#[allow(non_upper_case_globals)]
+pub const TextureUsageFlags_PRESENT: u32 = 32;
 
 #[repr(C)]
 pub struct TextureDescriptor {