71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
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// author: Jacky Boen
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package main
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import (
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"fmt"
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"os"
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"github.com/veandco/go-sdl2/img"
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"github.com/veandco/go-sdl2/sdl"
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)
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var winTitle string = "Go-SDL2 Texture"
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var winWidth, winHeight int32 = 800, 600
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var imageName string = "../../assets/test.png"
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func run() int {
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var window *sdl.Window
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var renderer *sdl.Renderer
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var texture *sdl.Texture
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var src, dst sdl.Rect
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var err error
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window, err = sdl.CreateWindow(winTitle, sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED,
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winWidth, winHeight, sdl.WINDOW_SHOWN)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create window: %s\n", err)
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return 1
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}
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defer window.Destroy()
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renderer, err = sdl.CreateRenderer(window, -1, sdl.RENDERER_ACCELERATED)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create renderer: %s\n", err)
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return 2
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}
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defer renderer.Destroy()
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image, err := img.Load(imageName)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to load PNG: %s\n", err)
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return 3
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}
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defer image.Free()
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texture, err = renderer.CreateTextureFromSurface(image)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Failed to create texture: %s\n", err)
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return 4
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}
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defer texture.Destroy()
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src = sdl.Rect{0, 0, 512, 512}
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dst = sdl.Rect{100, 50, 512, 512}
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renderer.Clear()
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renderer.SetDrawColor(255, 0, 0, 255)
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renderer.FillRect(&sdl.Rect{0, 0, int32(winWidth), int32(winHeight)})
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renderer.Copy(texture, &src, &dst)
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renderer.Present()
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sdl.PollEvent()
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sdl.Delay(2000)
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return 0
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}
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func main() {
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os.Exit(run())
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}
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