write_texture to a subsection of a texture on the Dx12 backend without first writing to the whole texture appears to do nothing #1306
Description
Description
write_texture for a subsection of a texture appears to do nothing on the Dx12 backend unless the whole texture was first written to. (debugging to show that subsection writes work after writing to the whole texture not detailed here)
Repro steps
Apply diff to wgpu-rs and run cube example with WGPU_BACKEND=dx12
(let me know and I can create branches for this and future issues)
diff --git a/examples/cube/main.rs b/examples/cube/main.rs
index 983dde1..cb60e3e 100644
--- a/examples/cube/main.rs
+++ b/examples/cube/main.rs
@@ -207,7 +207,11 @@ impl framework::Example for Example {
bytes_per_row: Some(std::num::NonZeroU32::new(4 * size).unwrap()),
rows_per_image: None,
},
- texture_extent,
+ wgpu::Extent3d {
+ height: texture_extent.height / 2,
+ width: texture_extent.width / 2,
+ ..texture_extent
+ },
);
// Create other resourcesExpected vs observed behavior
Expected (produced via Vulkan backend):
Observed:
Extra materials
none (let me know if an api trace is useful for this and I can get one)
Platform
Windows 10, wgpu-rs: 82b7068, GPU: AMD Radeon(TM) Vega 3 Graphics