GPUCompilationMessage: lineNum property

{{APIRef("WebGPU API")}}{{SecureContext_Header}}{{AvailableInWorkers}}

The lineNum read-only property of the {{domxref("GPUCompilationMessage")}} interface is a number representing the line number in the shader code that the message corresponds to.

Value

A number.

Note that:

• If the message corresponds to a substring, lineNum refers to the line number that the substring begins on.
• If the message does not correspond to a specific line of code (perhaps it refers to the whole of the shader code), lineNum will be 0.
• Values are one-based — a value of 1 refers to the first line of code.
• Lines are delimited by line breaks. In WGSL, a specific list of characters is defined as line breaks.

Examples

const shaderModule = device.createShaderModule({
  code: shaders,
});

const shaderInfo = await shaderModule.getCompilationInfo();
const firstMessage = shaderInfo.messages[0];
console.log(firstMessage.lineNum);

See the main GPUCompilationInfo page for a more detailed example.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• The WebGPU API