The code defines an asynchronous doFrame function that initializes and calls OpenGL functions, and an asynchronous testOpenGL function that creates a window and sets an interval to repeatedly call doFrame with the window object. The testOpenGL function is exported as a module.

Run example

npm run import -- "test opengl renderer"

test opengl renderer

let beginFrame, endFrame
async function doFrame(window) {
  if(!beginFrame) {
    frameLoader = await importer.import("opengl frame")
    beginFrame = frameLoader.beginFrame
    endFrame = frameLoader.endFrame
  }
  beginFrame(window)

  endFrame(window)
}

async function testOpenGL() {
  const {createWindow} = await importer.import("opengl context")
  let window = createWindow()
  //console.log(window)
  doFrame(window)
  setInterval(doFrame.bind(null, window), 10)
}

module.exports = testOpenGL

// Import all necessary modules
const { createWindow, importModules } = require('./utils');

// Extract and store the beginFrame and endFrame functions
async function getFrameFunctions() {
  try {
    const { beginFrame, endFrame } = await importModules('opengl frame');
    return { beginFrame, endFrame };
  } catch (error) {
    throw new Error('Failed to import OpenGL frame functions');
  }
}

// Handle a single frame
async function handleFrame(window) {
  try {
    const { beginFrame, endFrame } = await getFrameFunctions();
    beginFrame(window);
    endFrame(window);
  } catch (error) {
    console.error('Error handling frame:', error);
  }
}

// Main test function
async function testOpenGL() {
  try {
    const { createWindow } = await importModules('opengl context');
    const window = createWindow();
    console.log('OpenGL context created');

    // Handle initial frame
    await handleFrame(window);

    // Handle frames at 10ms intervals
    setInterval(async () => {
      await handleFrame(window);
    }, 10);
  } catch (error) {
    console.error('Error setting up OpenGL test:', error);
  }
}

// Export the main test function
module.exports = testOpenGL;

Code Breakdown

Variables

• beginFrame and endFrame are variables initialized to null. They are later assigned functions from an imported module.

Functions

doFrame(window)

• This is an asynchronous function that takes a window object as an argument.
• It checks if beginFrame is not initialized, and if so, imports an opengl frame module and assigns its beginFrame and endFrame functions to the variables.
• It calls the beginFrame and endFrame functions with the provided window object as an argument.
• It is designed to be called repeatedly.

testOpenGL()

• This is an asynchronous function that imports an opengl context module and assigns its createWindow function to a variable.
• It creates a window using the createWindow function and passes it to the doFrame function.
• It sets an interval to call the doFrame function every 10 milliseconds, passing the previously created window object.

Module Exports

• The testOpenGL function is exported as a module.