From b8625b6fdbfe76719d5765da8e2729f3c17b5a96 Mon Sep 17 00:00:00 2001 From: Pavel Tisnovsky Date: Tue, 5 May 2020 08:52:51 +0200 Subject: [PATCH] Example #7: blitting via SDL_BlitScaled function --- lesson7/sdl/introduction/test07.go | 53 ++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 lesson7/sdl/introduction/test07.go diff --git a/lesson7/sdl/introduction/test07.go b/lesson7/sdl/introduction/test07.go new file mode 100644 index 0000000..f797ac1 --- /dev/null +++ b/lesson7/sdl/introduction/test07.go @@ -0,0 +1,53 @@ +package main + +import ( + "github.com/veandco/go-sdl2/img" + "github.com/veandco/go-sdl2/sdl" +) + +const ( + width = 640 + height = 480 +) + +func main() { + if err := sdl.Init(sdl.INIT_VIDEO); err != nil { + panic(err) + } + defer sdl.Quit() + + window, err := sdl.CreateWindow("SDL2 example #7", sdl.WINDOWPOS_UNDEFINED, sdl.WINDOWPOS_UNDEFINED, + width, height, sdl.WINDOW_SHOWN) + if err != nil { + panic(err) + } + defer window.Destroy() + + primarySurface, err := window.GetSurface() + if err != nil { + panic(err) + } + + tempImage, err := img.Load("test1.bmp") + if err != nil { + panic(err) + } + defer tempImage.Free() + + convertedImage, err := tempImage.Convert(primarySurface.Format, 0) + if err != nil { + panic(err) + } + defer convertedImage.Free() + + primarySurface.FillRect(nil, sdl.MapRGB(primarySurface.Format, 192, 255, 192)) + + err = convertedImage.BlitScaled(nil, primarySurface, nil) + if err != nil { + panic(err) + } + + window.UpdateSurface() + + sdl.Delay(5000) +}