Merge #872

872: Remove zero padding from `create_buffer_init` r=kvark a=grovesNL

Follow-up to #870 (#870 (comment))

Co-authored-by: grovesNL <[email protected]>

examples/hello-compute/main.rs

@@ -101,7 +101,7 @@ async fn execute_gpu(numbers: Vec<u32>) -> Vec<u32> {
     // It is to WebGPU what a descriptor set is to Vulkan.
     // `binding` here refers to the `binding` of a buffer in the shader (`layout(set = 0, binding = 0) buffer`).
 
-    // A pipeline specifices the operation of a shader
+    // A pipeline specifies the operation of a shader
 
     // Instantiates the pipeline.
     let compute_pipeline = device.create_compute_pipeline(&wgpu::ComputePipelineDescriptor {

src/util/device.rs

@@ -53,14 +53,10 @@ impl DeviceExt for crate::Device {
         };
 
         let buffer = self.create_buffer(&wgt_descriptor);
-        {
-            let mut slice = buffer.slice(..).get_mapped_range_mut();
-            slice[0..unpadded_size as usize].copy_from_slice(descriptor.contents);
-
-            for i in unpadded_size..padded_size {
-                slice[i as usize] = 0;
-            }
-        }
+        buffer
+            .slice(..unpadded_size)
+            .get_mapped_range_mut()
+            .copy_from_slice(descriptor.contents);
         buffer.unmap();
         buffer
     }