def _make_particle_scene(self):
# Create a new scene root
self._particle_scene = Globals.base.render.attach_new_node("CloudParticles")
self._particle_scene.hide(self._pipeline.tag_mgr.get_gbuffer_mask())
self._particle_scene.hide(self._pipeline.tag_mgr.get_shadow_mask())
self._particle_scene.hide(self._pipeline.tag_mgr.get_voxelize_mask())
cm = CardMaker("")
cm.set_frame(-1.0, 1.0, -1.0, 1.0)
cm.set_has_normals(False)
cm.set_has_uvs(False)
card_node = cm.generate()
card_node.set_bounds(OmniBoundingVolume())
card_node.set_final(True)
self._particle_np = self._particle_scene.attach_new_node(card_node)
self._particle_np.set_shader_input("CloudVoxels", self._cloud_voxels.get_texture())
self._particle_np.set_instance_count(self._voxel_res_xy * self._voxel_res_xy * self._voxel_res_z)
self._particle_np.set_transparency(TransparencyAttrib.M_multisample, 1000000)
self._particle_scene.set_transparency(TransparencyAttrib.M_multisample, 1000000)
self._particle_cam = Camera("CloudParticleCam")
self._particle_cam.set_lens(Globals.base.camLens)
self._particle_cam_np = self._particle_scene.attach_new_node(self._particle_cam)
cloud_particle_mask = BitMask32.bit(16)
self._particle_cam.set_camera_mask(cloud_particle_mask)
render.hide(cloud_particle_mask)
self._particle_scene.show_through(cloud_particle_mask)
self._particle_target = self._create_target("Clouds:RenderParticles")
self._particle_target.add_color_texture(bits=16)
self._particle_target.set_source(self._particle_cam_np, Globals.base.win)
self._particle_target.set_enable_transparency(True)
self._particle_target.prepare_scene_render()
self._particle_target.set_clear_color(True, color=Vec4(0, 0, 0, 0))
