62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
package main
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import (
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"log"
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"unsafe"
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"github.com/veandco/go-sdl2/sdl"
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)
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// Whether to use RenderGeometryRaw or not
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const raw = false
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func main() {
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sdl.Init(sdl.INIT_EVERYTHING)
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defer sdl.Quit()
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window, err := sdl.CreateWindow("Test RenderGeometryRaw", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, 800, 600, sdl.WINDOW_SHOWN)
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if err != nil {
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log.Fatal(err)
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}
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defer window.Destroy()
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renderer, err := sdl.CreateRenderer(window, -1, sdl.RENDERER_SOFTWARE)
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if err != nil {
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log.Fatal(err)
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}
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defer renderer.Destroy()
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vertices := []sdl.Vertex{
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{sdl.FPoint{400, 150}, sdl.Color{255, 0, 0, 255}, sdl.FPoint{0, 0}},
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{sdl.FPoint{200, 450}, sdl.Color{0, 0, 255, 255}, sdl.FPoint{0, 0}},
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{sdl.FPoint{600, 450}, sdl.Color{0, 255, 0, 255}, sdl.FPoint{0, 0}},
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}
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if raw {
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log.Println("Using RenderGeometryRaw")
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} else {
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log.Println("Using RenderGeometry")
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}
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running := true
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for running {
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for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
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switch event.(type) {
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case *sdl.QuitEvent:
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running = false
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}
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}
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renderer.SetDrawColor(0, 0, 0, sdl.ALPHA_OPAQUE)
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renderer.Clear()
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if raw {
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renderer.RenderGeometryRaw(nil, (*float32)(unsafe.Pointer(&vertices[0])), 20, (*sdl.Color)(unsafe.Add(unsafe.Pointer(&vertices[0]), 8)), 20, (*float32)(unsafe.Add(unsafe.Pointer(&vertices[0]), 12)), 20, len(vertices), nil, 0, 0)
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} else {
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renderer.RenderGeometry(nil, vertices, nil)
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}
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renderer.Present()
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sdl.Delay(33)
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}
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}
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