func (win *Window) GL_MakeCurrent(ctx GLContext) error {
if C.SDL_GL_MakeCurrent(win.c, ctx.c()) != 0 {
return getError()
}
return nil
}
func InitGL(width, height, msaa int, fullscreen bool) {
C.SDL_Init(C.SDL_INIT_VIDEO)
C.SDL_VideoInit( /*nil*/ C.SDL_GetVideoDriver(0))
C.SDL_GL_SetAttribute(C.SDL_GL_CONTEXT_MAJOR_VERSION, 3)
C.SDL_GL_SetAttribute(C.SDL_GL_CONTEXT_MINOR_VERSION, 2)
if msaa != 0 {
C.SDL_GL_SetAttribute(C.SDL_GL_MULTISAMPLEBUFFERS, 1)
C.SDL_GL_SetAttribute(C.SDL_GL_MULTISAMPLESAMPLES, C.int(msaa))
}
C.SDL_GL_SetAttribute(C.SDL_GL_DEPTH_SIZE, 16)
//win = C.SDL_CreateWindow(nil, C.SDL_WINDOWPOS_CENTERED, C.SDL_WINDOWPOS_CENTERED,C.int(width), C.int(height), C.SDL_WINDOW_OPENGL)
if fullscreen {
win = C.SDL_CreateWindow(nil, C.SDL_WINDOWPOS_CENTERED, C.SDL_WINDOWPOS_CENTERED, C.int(width), C.int(height), C.SDL_WINDOW_OPENGL|C.SDL_WINDOW_FULLSCREEN_DESKTOP)
} else {
win = C.SDL_CreateWindow(nil, C.SDL_WINDOWPOS_CENTERED, C.SDL_WINDOWPOS_CENTERED, C.int(width), C.int(height), C.SDL_WINDOW_OPENGL)
}
C.SDL_ShowWindow(win)
wat := C.SDL_GL_CreateContext(win)
fmt.Println(C.GoString(C.SDL_GetVideoDriver(0)))
C.SDL_GL_MakeCurrent(win, wat)
//C.SDL_GL_SetSwapInterval(1)
C.glEnable(C.GL_DEPTH_TEST)
C.glDepthFunc(C.GL_LEQUAL)
C.glClearColor(0.3, 0.5, 1, 0)
C.glClear(C.GL_COLOR_BUFFER_BIT | C.GL_DEPTH_BUFFER_BIT)
printerr("failed to initialize openGL")
}
func GL_MakeCurrent(window *Window, glcontext GLContext) int {
_window := (*C.SDL_Window)(unsafe.Pointer(window))
_glcontext := (C.SDL_GLContext)(glcontext)
return (int)(C.SDL_GL_MakeCurrent(_window, _glcontext))
}
// GL_MakeCurrent (https://wiki.libsdl.org/SDL_GL_MakeCurrent)
func GL_MakeCurrent(window *Window, glcontext GLContext) error {
if C.SDL_GL_MakeCurrent(window.cptr(), C.SDL_GLContext(glcontext)) != 0 {
return GetError()
}
return nil
}
func GL_MakeCurrent(window *Window, glcontext GLContext) int {
return int(C.SDL_GL_MakeCurrent(window.cptr(), C.SDL_GLContext(glcontext)))
}