func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var points []sdl.Point
var rect sdl.Rect
var rects []sdl.Rect
var err error
sdl.Do(func() {
window, err = sdl.CreateWindow(WindowTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, WindowWidth, WindowHeight, sdl.WINDOW_SHOWN)
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer func() {
sdl.Do(func() {
window.Destroy()
})
}()
sdl.Do(func() {
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
})
if err != nil {
fmt.Fprint(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
sdl.Do(func() {
renderer.Clear()
})
defer func() {
sdl.Do(func() {
renderer.Destroy()
})
}()
go func() {
println("goroutine: A")
}()
sdl.Do(func() {
renderer.SetDrawColor(255, 255, 255, 255)
renderer.DrawPoint(150, 300)
println("queue: A")
})
go func() {
println("goroutine: B")
}()
sdl.Do(func() {
renderer.SetDrawColor(0, 0, 255, 255)
renderer.DrawLine(0, 0, 200, 200)
println("queue: B")
})
go func() {
println("goroutine: C")
}()
sdl.Do(func() {
points = []sdl.Point{{0, 0}, {100, 300}, {100, 300}, {200, 0}}
renderer.SetDrawColor(255, 255, 0, 255)
renderer.DrawLines(points)
println("queue: C")
})
go func() {
println("goroutine: D")
}()
sdl.Do(func() {
rect = sdl.Rect{300, 0, 200, 200}
renderer.SetDrawColor(255, 0, 0, 255)
renderer.DrawRect(&rect)
println("queue: D")
})
go func() {
println("goroutine: E")
}()
sdl.Do(func() {
rects = []sdl.Rect{{400, 400, 100, 100}, {550, 350, 200, 200}}
renderer.SetDrawColor(0, 255, 255, 255)
renderer.DrawRects(rects)
println("queue: E")
})
go func() {
println("goroutine: F")
}()
sdl.Do(func() {
rect = sdl.Rect{250, 250, 200, 200}
renderer.SetDrawColor(0, 255, 0, 255)
renderer.FillRect(&rect)
println("queue: F")
})
go func() {
println("goroutine: G")
}()
sdl.Do(func() {
rects = []sdl.Rect{{500, 300, 100, 100}, {200, 300, 200, 200}}
renderer.SetDrawColor(255, 0, 255, 255)
renderer.FillRects(rects)
println("queue: G")
})
go func() {
println("goroutine: H")
}()
sdl.Do(func() {
renderer.Present()
println("queue: H")
})
sdl.Do(func() {
sdl.Delay(2000)
})
return 0
}
func run() int {
var window *sdl.Window
var renderer *sdl.Renderer
var err error
sdl.Do(func() {
window, err = sdl.CreateWindow(WindowTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, WindowWidth, WindowHeight, sdl.WINDOW_OPENGL)
})
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
return 1
}
defer func() {
sdl.Do(func() {
window.Destroy()
})
}()
sdl.Do(func() {
renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
})
if err != nil {
fmt.Fprint(os.Stderr, "Failed to create renderer: %s\n", err)
return 2
}
defer func() {
sdl.Do(func() {
renderer.Destroy()
})
}()
sdl.Do(func() {
renderer.Clear()
})
for i := range rects {
rects[i] = sdl.Rect{
X: int32(rand.Int() % WindowWidth),
Y: int32(i * WindowHeight / len(rects)),
W: RectWidth,
H: RectHeight,
}
}
running := true
for running {
sdl.Do(func() {
for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
switch event.(type) {
case *sdl.QuitEvent:
runningMutex.Lock()
running = false
runningMutex.Unlock()
}
}
renderer.Clear()
renderer.SetDrawColor(0, 0, 0, 0x20)
renderer.FillRect(&sdl.Rect{0, 0, WindowWidth, WindowHeight})
})
// Do expensive stuff using goroutines
wg := sync.WaitGroup{}
for i := range rects {
wg.Add(1)
go func(i int) {
rects[i].X = (rects[i].X + 10) % WindowWidth
sdl.Do(func() {
renderer.SetDrawColor(0xff, 0xff, 0xff, 0xff)
renderer.DrawRect(&rects[i])
})
wg.Done()
}(i)
}
wg.Wait()
sdl.Do(func() {
renderer.Present()
sdl.Delay(1000 / FrameRate)
})
}
return 0
}