Explicit frame rendering

using ModernGL, GLMakie
using GLFW

using AbstractPlotting

GLMakie.opengl_renderloop[] = (screen) -> nothing
function update_loop(m, buff, screen)
    for i = 1:20
        GLFW.PollEvents()
        buff .= rand.(Point3f0) .* 20f0
        m[1] = buff
        GLMakie.render_frame(screen)
        GLFW.SwapBuffers(GLMakie.to_native(screen))
        glFinish()
    end
end
scene = meshscatter(rand(Point3f0, 10^4) .* 20f0)
screen = AbstractPlotting.backend_display(GLMakie.GLBackend(), scene)
meshplot = scene[end]
buff = rand(Point3f0, 10^4) .* 20f0;
update_loop(meshplot, buff, screen)
GLMakie.opengl_renderloop[] = GLMakie.renderloop # restore previous loop
scene