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