func loadShader(shaderType gl.GLenum, source string) gl.Shader {
shader := gl.CreateShader(shaderType)
if err := gl.GetError(); err != gl.NO_ERROR {
panic(fmt.Errorf("gl error: %v", err))
}
shader.Source(source)
shader.Compile()
if shader.Get(gl.COMPILE_STATUS) != gl.TRUE {
log := shader.GetInfoLog()
panic(fmt.Errorf("Failed to compile shader: %v, shader: %v", log, source))
}
return shader
}
func main() {
runtime.LockOSThread()
flag.Parse()
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
log.Fatal(err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
if err := sdl.Init(sdl.INIT_EVERYTHING); err != nil {
panic(err)
}
defer sdl.Quit()
sdl.GL_SetAttribute(sdl.GL_MULTISAMPLESAMPLES, 4)
sdl.GL_SetAttribute(sdl.GL_CONTEXT_MAJOR_VERSION, 3)
sdl.GL_SetAttribute(sdl.GL_CONTEXT_MINOR_VERSION, 3)
sdl.GL_SetAttribute(sdl.GL_CONTEXT_PROFILE_MASK, sdl.GL_CONTEXT_PROFILE_CORE)
sdl.GL_SetAttribute(sdl.GL_DOUBLEBUFFER, 1)
sdl.GL_SetAttribute(sdl.GL_DEPTH_SIZE, 24)
sdl.GL_SetAttribute(sdl.GL_CONTEXT_FLAGS, sdl.GL_CONTEXT_DEBUG_FLAG|sdl.GL_CONTEXT_FORWARD_COMPATIBLE_FLAG)
window, err := sdl.CreateWindow("TOW", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, 1024, 768, sdl.WINDOW_OPENGL|sdl.WINDOW_SHOWN|sdl.WINDOW_RESIZABLE)
if err != nil {
log.Fatal("can't create window", err)
}
defer window.Destroy()
//defer renderer.Destroy()
glcontext, err := sdl.GL_CreateContext(window)
if err != nil {
log.Fatal("can't create context", err)
}
defer sdl.GL_DeleteContext(glcontext)
sdl.GL_MakeCurrent(window, glcontext)
//err := gl.GlewInit()
//fmt.Println(gl.GlewGetErrorString(err))
//glew init
gl.Init()
sdl.GL_SetSwapInterval(1)
fmt.Println("glVersion", gl.GetString(gl.VERSION))
tw.Init(tw.OPENGL_CORE, nil)
defer tw.Terminate()
gl.GetError() // Ignore error
debugContext.InitDebugContext()
world := generation.GenerateWorld(64, 64, 2)
gs := gamestate.NewGameState(window, world)
defer gs.Delete()
worldRenderer := rendering.NewWorldRenderer(window, gs.World)
defer worldRenderer.Delete()
gs.Bar.AddButton("screen shot", worldRenderer.ScreenShot, "")
MainLoop(gs, worldRenderer)
if *memprofile != "" {
f, err := os.Create(*memprofile)
if err != nil {
panic(err)
}
pprof.WriteHeapProfile(f)
f.Close()
return
}
}