Add some missing Debug implementations. (#4166)

wgpu-types/src/lib.rs

@@ -6473,6 +6473,7 @@ pub enum Gles3MinorVersion {
 }
 
 /// Options for creating an instance.
+#[derive(Debug)]
 pub struct InstanceDescriptor {
     /// Which `Backends` to enable.
     pub backends: Backends,

wgpu/src/lib.rs

@@ -523,7 +523,7 @@ impl Drop for ShaderModule {
 /// This type is unique to the Rust API of `wgpu`. In the WebGPU specification,
 /// only WGSL source code strings are accepted.
 #[cfg_attr(feature = "naga", allow(clippy::large_enum_variant))]
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 #[non_exhaustive]
 pub enum ShaderSource<'a> {
     /// SPIR-V module represented as a slice of words.
@@ -560,7 +560,7 @@ static_assertions::assert_impl_all!(ShaderSource: Send, Sync);
 ///
 /// Corresponds to [WebGPU `GPUShaderModuleDescriptor`](
 /// https://gpuweb.github.io/gpuweb/#dictdef-gpushadermoduledescriptor).
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct ShaderModuleDescriptor<'a> {
     /// Debug label of the shader module. This will show up in graphics debuggers for easy identification.
     pub label: Label<'a>,
@@ -574,6 +574,7 @@ static_assertions::assert_impl_all!(ShaderModuleDescriptor: Send, Sync);
 ///
 /// This type is unique to the Rust API of `wgpu`. In the WebGPU specification,
 /// only WGSL source code strings are accepted.
+#[derive(Debug)]
 pub struct ShaderModuleDescriptorSpirV<'a> {
     /// Debug label of the shader module. This will show up in graphics debuggers for easy identification.
     pub label: Label<'a>,