Add information on default entryPoint property values (#36633)

* Add information on default entryPoint property values

* Fixes for beaufortfrancois review comments

* Fixes for wbamberg review comments

files/en-us/web/api/gpudevice/createcomputepipeline/index.md

@@ -51,8 +51,12 @@ createComputePipeline(descriptor)
             }
             ```
 
-        - `entryPoint`
+        - `entryPoint` {{optional_inline}}
+
           - : The name of the function in the `module` that this stage will use to perform its work. The corresponding shader function must have the `@compute` attribute to be identified as this entry point. See [Entry Point Declaration](https://gpuweb.github.io/gpuweb/wgsl/#entry-point-decl) for more information.
+
+            You can omit the `entryPoint` property if your shader code contains a single function with the `@compute` attribute set — the browser will use this as the default entry point. If `entryPoint` is omitted and the browser cannot determine a default entry point, a {{domxref("GPUValidationError")}} is generated and the resulting {{domxref("GPUComputePipeline")}} will be invalid.
+
         - `module`
           - : A {{domxref("GPUShaderModule")}} object containing the [WGSL](https://gpuweb.github.io/gpuweb/wgsl/) code that this programmable stage will execute.
 
@@ -74,6 +78,7 @@ The following criteria must be met when calling **`createComputePipeline()`**, o
 - The workgroup storage size used by the `module` referenced inside the `compute` property is less than or equal to the {{domxref("GPUDevice")}}'s `maxComputeWorkgroupStorageSize` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
 - The `module` uses a number of compute invocations per workgroup less than or equal to the {{domxref("GPUDevice")}}'s `maxComputeInvocationsPerWorkgroup` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
 - The `module`'s workgroup size is less than or equal to the {{domxref("GPUDevice")}}'s corresponding `maxComputeWorkgroupSizeX`, `maxComputeWorkgroupSizeY`, or `maxComputeWorkgroupSizeZ` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
+- If the `entryPoint` property is omitted, the shader code contains a single compute shader entry point function for the browser to use as the default entry point.
 
 ## Examples
 

files/en-us/web/api/gpudevice/createcomputepipelineasync/index.md

@@ -43,6 +43,7 @@ A validation error can occur if any of the following are false:
 - The workgroup storage size used by the `module` referenced inside the `compute` property is less than or equal to the {{domxref("GPUDevice")}}'s `maxComputeWorkgroupStorageSize` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
 - The `module` uses a number of compute invocations per workgroup less than or equal to the {{domxref("GPUDevice")}}'s `maxComputeInvocationsPerWorkgroup` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
 - The `module`'s workgroup size is less than or equal to the {{domxref("GPUDevice")}}'s corresponding `maxComputeWorkgroupSizeX`, `maxComputeWorkgroupSizeY`, or `maxComputeWorkgroupSizeZ` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
+- If the `entryPoint` property is omitted, the shader code contains a single compute shader entry point function for the browser to use as the default entry point.
 
 ## Examples
 

files/en-us/web/api/gpudevice/createrenderpipeline/index.md

@@ -133,8 +133,12 @@ The `fragment` object contains an array of objects, each of which can contain th
     }
     ```
 
-- `entryPoint`
+- `entryPoint` {{optional_inline}}
+
   - : The name of the function in the `module` that this stage will use to perform its work. The corresponding shader function must have the `@fragment` attribute to be identified as this entry point. See [Entry Point Declaration](https://gpuweb.github.io/gpuweb/wgsl/#entry-point-decl) for more information.
+
+    You can omit the `entryPoint` property if your shader code contains a single function with the `@fragment` attribute set — the browser will use this as the default entry point. If `entryPoint` is omitted and the browser cannot determine a default entry point, a {{domxref("GPUValidationError")}} is generated and the resulting {{domxref("GPURenderPipeline")}} will be invalid.
+
 - `module`
   - : A {{domxref("GPUShaderModule")}} object containing the [WGSL](https://gpuweb.github.io/gpuweb/wgsl/) code that this programmable stage will execute.
 - `targets`
@@ -313,8 +317,12 @@ The `vertex` object can contain the following properties:
     }
     ```
 
-- `entryPoint`
+- `entryPoint` {{optional_inline}}
+
   - : The name of the function in the `module` that this stage will use to perform its work. The corresponding shader function must have the `@vertex` attribute to be identified as this entry point. See [Entry Point Declaration](https://gpuweb.github.io/gpuweb/wgsl/#entry-point-decl) for more information.
+
+    You can omit the `entryPoint` property if your shader code contains a single function with the `@vertex` attribute set — the browser will use this as the default entry point. If `entryPoint` is omitted and the browser cannot determine a default entry point, a {{domxref("GPUValidationError")}} is generated and the resulting {{domxref("GPURenderPipeline")}} will be invalid.
+
 - `module`
   - : A {{domxref("GPUShaderModule")}} object containing the [WGSL](https://gpuweb.github.io/gpuweb/wgsl/) code that this programmable stage will execute.
 - `buffers` {{optional_inline}}
@@ -358,8 +366,11 @@ The following criteria must be met when calling **`createRenderPipeline()`**, ot
   - For each `target`, `writeMask`'s numeric equivalent is less than 16.
   - If any of the used blend factor operations use the source alpha channel (for example `"src-alpha-saturated"`), the output has an alpha channel (that is, it must be a `vec4`).
   - If the `src1`, `one-minus-src1`, `src1-alpha`, or `one-minus-src1-alpha` blend factor operations are used, the `dual-source-blending` [feature](/en-US/docs/Web/API/GPUSupportedFeatures) is enabled.
+  - If the `entryPoint` property is omitted, the shader code contains a single fragment shader entry point function for the browser to use as the default entry point.
 - For `primitive` objects:
   - If the `unclippedDepth` property is used, the `depth-clip-control` [feature](/en-US/docs/Web/API/GPUSupportedFeatures) is enabled.
+- For `vertex` objects:
+  - If the `entryPoint` property is omitted, the shader code contains a single vertex shader entry point function for the browser to use as the default entry point.
 
 ## Examples
 

files/en-us/web/api/gpudevice/createrenderpipelineasync/index.md

@@ -49,6 +49,11 @@ A validation error can occur if any of the following are false:
   - `targets.length` is less than or equal to the {{domxref("GPUDevice")}}'s `maxColorAttachments` {{domxref("GPUSupportedLimits", "limit", "", "nocode")}}.
   - For each `target`, `writeMask`'s numeric equivalent is less than 16.
   - If any of the used blend factor operations use the source alpha channel (for example `"src-alpha-saturated"`), the output has an alpha channel (that is, it must be a `vec4`).
+  - If the `entryPoint` property is omitted, the shader code contains a single fragment shader entry point function for the browser to use as the default entry point.
+- For `primitive` objects:
+  - If the `unclippedDepth` property is used, the `depth-clip-control` [feature](/en-US/docs/Web/API/GPUSupportedFeatures) is enabled.
+- For `vertex` objects:
+  - If the `entryPoint` property is omitted, the shader code contains a single vertex shader entry point function for the browser to use as the default entry point.
 
 ## Examples