Function onStart

example/basic/main.go:101–119

(glctx gl.Context)

}

func onStart(glctx gl.Context) {
	var err error
	program, err = glutil.CreateProgram(glctx, vertexShader, fragmentShader)
	if err != nil {
		log.Printf("error creating GL program: %v", err)
		return
	}

	buf = glctx.CreateBuffer()
	glctx.BindBuffer(gl.ARRAY_BUFFER, buf)
	glctx.BufferData(gl.ARRAY_BUFFER, triangleData, gl.STATIC_DRAW)

	position = glctx.GetAttribLocation(program, "position")
	color = glctx.GetUniformLocation(program, "color")
	offset = glctx.GetUniformLocation(program, "offset")

	images = glutil.NewImages(glctx)
	fps = debug.NewFPS(images)
}

func onStop(glctx gl.Context) {
	glctx.DeleteProgram(program)