Add TextureView::texture

Author: cwfitzgerald

CHANGELOG.md

@@ -42,6 +42,13 @@ Bottom level categories:
 
 ### New Features
 
+#### New method `TextureView::texture`
+
+You can now call `texture_view.texture()` to get access to the texture that
+a given texture view points to.
+
+By @cwfitzgerald in [#7907](https://github.com/gfx-rs/wgpu/pull/7907).
+
 #### Naga
 
 - Added `no_std` support with default features disabled. By @Bushrat011899 in [#7585](https://github.com/gfx-rs/wgpu/pull/7585).

tests/tests/wgpu-gpu/mem_leaks.rs

@@ -169,8 +169,9 @@ async fn draw_test_with_reports(
     assert_eq!(report.buffers.num_allocated, 1);
     assert_eq!(report.texture_views.num_allocated, 1);
     assert_eq!(report.texture_views.num_kept_from_user, 1);
-    assert_eq!(report.textures.num_allocated, 0);
-    assert_eq!(report.textures.num_kept_from_user, 0);
+    // TextureViews in `wgpu` have a reference to the texture.
+    assert_eq!(report.textures.num_allocated, 1);
+    assert_eq!(report.textures.num_kept_from_user, 1);
 
     let mut encoder = ctx
         .device

wgpu/src/api/texture.rs

@@ -51,7 +51,10 @@ impl Texture {
     pub fn create_view(&self, desc: &TextureViewDescriptor<'_>) -> TextureView {
         let view = self.inner.create_view(desc);
 
-        TextureView { inner: view }
+        TextureView {
+            inner: view,
+            texture: self.clone(),
+        }
     }
 
     /// Destroy the associated native resources as soon as possible.

wgpu/src/api/texture_view.rs

@@ -12,13 +12,22 @@ use crate::*;
 #[derive(Debug, Clone)]
 pub struct TextureView {
     pub(crate) inner: dispatch::DispatchTextureView,
+    pub(crate) texture: Texture,
 }
 #[cfg(send_sync)]
 static_assertions::assert_impl_all!(TextureView: Send, Sync);
 
 crate::cmp::impl_eq_ord_hash_proxy!(TextureView => .inner);
 
 impl TextureView {
+    /// Returns the [`Texture`] that this `TextureView` refers to.
+    ///
+    /// All wgpu resources are refcounted, so you can own the returned [`Texture`]
+    /// by cloning it.
+    pub fn texture(&self) -> &Texture {
+        &self.texture
+    }
+
     /// Returns the inner hal `TextureView` using a callback. The hal texture will be `None` if the
     /// backend type argument does not match with this wgpu Texture
     ///