glfw.go

//go:build !js

package main

import (
	"encoding/json"
	"fmt"
	"strings"

	"github.com/cogentcore/webgpu/wgpuglfw"
	"github.com/go-gl/glfw/v3.3/glfw"
)

func main() {
	if err := glfw.Init(); err != nil {
		panic(err)
	}
	defer glfw.Terminate()

	glfw.WindowHint(glfw.ClientAPI, glfw.NoAPI)
	window, err := glfw.CreateWindow(640, 480, "go-webgpu with glfw", nil, nil)
	if err != nil {
		panic(err)
	}
	defer window.Destroy()

	s, err := InitState(window, wgpuglfw.GetSurfaceDescriptor(window))
	if err != nil {
		panic(err)
	}
	defer s.Destroy()

	window.SetKeyCallback(func(w *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
		// Print resource usage on pressing 'R'
		if key == glfw.KeyR && (action == glfw.Press || action == glfw.Repeat) {
			report := s.instance.GenerateReport()
			buf, _ := json.MarshalIndent(report, "", "  ")
			fmt.Print(string(buf))
		}
	})

	window.SetSizeCallback(func(_ *glfw.Window, width, height int) {
		s.Resize(width, height)
	})

	for !window.ShouldClose() {
		glfw.PollEvents()

		err := s.Render()
		if err != nil {
			fmt.Println("error occurred while rendering:", err)

			errstr := err.Error()
			switch {
			case strings.Contains(errstr, "Surface timed out"): // do nothing
			case strings.Contains(errstr, "Surface is outdated"): // do nothing
			case strings.Contains(errstr, "Surface was lost"): // do nothing
			default:
				panic(err)
			}
		}
	}
}