func (ps *ParticleSystem) Render(Proj mgl.Mat4, View mgl.Mat4, clippingPlane mgl.Vec4) {
gl.PointSize(64)
ps.VaoRender1.Bind()
ps.RenderProg.Use()
Loc := ps.RenderLoc
Loc.Proj.UniformMatrix4f(false, (*[16]float32)(&Proj))
Loc.View.UniformMatrix4f(false, (*[16]float32)(&View))
Loc.MaxLifetime.Uniform1f(ps.MaxLifetime)
Loc.Image.Uniform1i(constants.TextureFireBall)
Loc.ClippingPlane_ws.Uniform4f(clippingPlane[0], clippingPlane[1], clippingPlane[2], clippingPlane[3])
gl.DepthMask(false)
gl.DrawArraysInstanced(gl.TRIANGLE_FAN, 0, 4, ps.NumParticles)
gl.DepthMask(true)
}
func initGL() (err error) {
gl.Init()
gl.ShadeModel(gl.SMOOTH)
gl.ClearColor(0, 0, 0, 0)
gl.ClearDepth(1)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
gl.DepthFunc(gl.NEVER)
gl.Enable(gl.BLEND)
gl.DepthMask(true)
//loadShader()
return
}