Created
August 31, 2018 12:59
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| package main | |
| import ( | |
| "fmt" | |
| "github.com/veandco/go-sdl2/sdl" | |
| ) | |
| const winWith, winHight int = 800, 600 | |
| type color struct { | |
| r, g, b byte | |
| } | |
| func setPixel(x, y int, c color, pixels []byte) { | |
| index := (y*winWith + x) * 4 | |
| if index < len(pixels)-4 && index >= 0 { | |
| pixels[index] = c.r | |
| pixels[index+1] = c.g | |
| pixels[index+2] = c.b | |
| } | |
| } | |
| func main() { | |
| err := sdl.Init(sdl.INIT_EVERYTHING) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| defer sdl.Quit() | |
| window, err := sdl.CreateWindow( | |
| "test", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, int32(winWith), int32(winHight), sdl.WINDOW_SHOWN) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| defer window.Destroy() | |
| renderer, err := sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| defer renderer.Destroy() | |
| texture, err := renderer.CreateTexture(sdl.PIXELFORMAT_ABGR8888, sdl.TEXTUREACCESS_STREAMING, int32(winWith), int32(winHight)) | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| defer texture.Destroy() | |
| pixels := make([]byte, winWith*winHight*4) | |
| for y := 0; y < winHight; y++ { | |
| for x := 0; x < winWith; x++ { | |
| setPixel(x, y, color{255, 0, 0}, pixels) | |
| } | |
| } | |
| texture.Update(nil, pixels, winWith*4) | |
| renderer.Copy(texture, nil, nil) | |
| renderer.Present() | |
| for { | |
| for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() { | |
| switch event.(type) { | |
| case *sdl.QuitEvent: | |
| return | |
| } | |
| } | |
| sdl.Delay(16) | |
| } | |
| } |
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