vlib: sdl module + tVintris example

vlib/sdl/image/image.v

@@ -0,0 +1,29 @@
+module image
+
+#flag linux -lSDL2_image
+#include <SDL_image.h>
+
+// following kludge until `sdl2-config ...` is supported also on windows
+#flag windows -I/msys64/mingw64/include/SDL2
+#flag windows -L/mingw64/lib -lSDL2_image
+
+//////////////////////////////////////////////////////////
+// SDL_Image.h
+//////////////////////////////////////////////////////////
+//fn C.IMG_Load_RW(logo &vsdl2.RwOps, free_src int) &vsdl2.Surface
+fn C.IMG_Init(flags int) int
+fn C.IMG_Quit()
+fn C.IMG_Load(file byteptr) voidptr
+
+pub fn img_init(flags int) int {
+	return C.IMG_Init(flags)
+}
+
+pub fn quit() {
+	C.IMG_Quit()
+}
+
+pub fn load(file string) &vsdl2.Surface {
+	res := C.IMG_Load(file.str)
+	return res
+}