fixes #289

docs/beginner/tutorial5-textures/README.md

@@ -165,35 +165,30 @@ All these different resources are nice and all, but they don't do us much good i
 A `BindGroup` describes a set of resources and how they can be accessed by a shader. We create a `BindGroup` using a `BindGroupLayout`. Let's make one of those first.
 
 ```rust
-let texture_bind_group_layout = device.create_bind_group_layout(
-    &wgpu::BindGroupLayoutDescriptor {
-        entries: &[
-            wgpu::BindGroupLayoutEntry {
-                binding: 0,
-                visibility: wgpu::ShaderStages::FRAGMENT,
-                ty: wgpu::BindingType::Texture {
-                    multisampled: false,
-                    view_dimension: wgpu::TextureViewDimension::D2,
-                    sample_type: wgpu::TextureSampleType::Float { filterable: true },
-                },
-                count: None,
-            },
-            wgpu::BindGroupLayoutEntry {
-                binding: 1,
-                visibility: wgpu::ShaderStages::FRAGMENT,
-                ty: wgpu::BindingType::Sampler(
-                    // SamplerBindingType::Comparison is only for TextureSampleType::Depth
-                    // SamplerBindingType::Filtering if the sample_type of the texture is:
-                    //     TextureSampleType::Float { filterable: true }
-                    // Otherwise you'll get an error.
-                    wgpu::SamplerBindingType::Filtering,
-                ),
-                count: None,
-            },
-        ],
-        label: Some("texture_bind_group_layout"),
-    }
-);
+let texture_bind_group_layout =
+            device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
+                entries: &[
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 0,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        ty: wgpu::BindingType::Texture {
+                            multisampled: false,
+                            view_dimension: wgpu::TextureViewDimension::D2,
+                            sample_type: wgpu::TextureSampleType::Float { filterable: true },
+                        },
+                        count: None,
+                    },
+                    wgpu::BindGroupLayoutEntry {
+                        binding: 1,
+                        visibility: wgpu::ShaderStages::FRAGMENT,
+                        // This should match the filterable field of the
+                        // corresponding Texture entry above.
+                        ty: wgpu::BindingType::Sampler(wgpu::SamplerBindingType::Filtering),
+                        count: None,
+                    },
+                ],
+                label: Some("texture_bind_group_layout"),
+            });
 ```
 
 Our `texture_bind_group_layout` has two entries: one for a sampled texture at binding 0, and one for a sampler at binding 1. Both of these bindings are visible only to the fragment shader as specified by `FRAGMENT`. The possible values for this field are any bitwise combination of `NONE`, `VERTEX`, `FRAGMENT`, or `COMPUTE`. Most of the time we'll only use `FRAGMENT` for textures and samplers, but it's good to know what else is available.