GPUCompilationMessage: linePos property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only insecure contexts (HTTPS), in some or allsupporting browsers.

Note: This feature is available inWeb Workers.

ThelinePos read-only property of theGPUCompilationMessage interface is a number representing the position in the code line that the message corresponds to. This could be an exact point, or the start of the relevant substring.

Value

A number.

To be precise,linePos is the number ofUTF-16 code units from the beginning of the line to the exact point or start of the relevant substring that the message corresponds to.

Note that:

If the message corresponds to a substring,linePos refers to the first UTF-16 code unit of the substring.
If the message does not correspond to a specific code position (perhaps it refers to the whole of the shader code),linePos will be 0.
Values are one-based — a value of 1 refers to the first code unit of the line.

Examples

const shaderModule = device.createShaderModule({  code: shaders,});const shaderInfo = await shaderModule.getCompilationInfo();const firstMessage = shaderInfo.messages[0];console.log(firstMessage.linePos);

See the mainGPUCompilationInfo page for a more detailed example.