func NewGLRenderer(view *View, title string) *GLRenderer {
r := new(GLRenderer)
r.View = view
GL <- func() {
if sdl.Init(sdl.INIT_VIDEO) < 0 {
panic(sdl.GetError())
}
sdl.GL_SetAttribute(sdl.GL_DOUBLEBUFFER, 1)
sdl.GL_SetAttribute(sdl.GL_SWAP_CONTROL, 1)
r.Screen = sdl.SetVideoMode(view.Width, view.Height, 32, sdl.OPENGL)
if r.Screen == nil {
panic(sdl.GetError())
}
sdl.WM_SetCaption(title, title)
err := gl33.Init()
if err != nil {
panic(err)
}
gl33.Enable(gl33.BLEND)
gl33.Enable(gl33.CULL_FACE)
gl33.Enable(gl33.DEPTH_TEST)
gl33.ClearColor(1.0, 1.0, 1.0, 1.0)
gl33.BlendFunc(gl33.SRC_ALPHA, gl33.ONE_MINUS_SRC_ALPHA)
gl33.DepthFunc(gl33.LEQUAL)
gl33.Viewport(0, 0, gl33.Sizei(view.Width), gl33.Sizei(view.Height))
}
r.PerspectiveMatrix = s3dm.PerspectiveMatrix(view.Fovy, view.Aspect, view.Near, view.Far)
r.OrthographicMatrix = s3dm.OrthographicMatrix(float64(view.Width), float64(view.Height), 0, 1)
return r
}
func (r *GLRenderer) UpdatePerspective() {
r.PerspectiveMatrix = s3dm.PerspectiveMatrix(r.View.Fovy, r.View.Aspect, r.View.Near, r.View.Far)
}