222 lines
7.9 KiB
Python
222 lines
7.9 KiB
Python
"""
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RenderPipeline
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Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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"""
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from __future__ import print_function
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from rplibs.six.moves import range # pylint: disable=import-error
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from panda3d.core import Vec3
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from rpcore.pynative.pointer_slot_storage import PointerSlotStorage
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from rpcore.pynative.gpu_command import GPUCommand
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MAX_LIGHT_COUNT = 65535
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MAX_SHADOW_SOURCES = 2048
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class InternalLightManager(object):
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""" Please refer to the native C++ implementation for docstrings and comments.
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This is just the python implementation, which does not contain documentation! """
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def __init__(self):
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self._lights = PointerSlotStorage(MAX_LIGHT_COUNT)
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self._shadow_sources = PointerSlotStorage(MAX_SHADOW_SOURCES)
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self._cmd_list = None
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self._shadow_manager = None
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self._camera_pos = Vec3(0)
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self._shadow_update_distance = 100.0
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def get_max_light_index(self):
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return self._lights.get_max_index()
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max_light_index = property(get_max_light_index)
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def get_num_lights(self):
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return self._lights.get_num_entries()
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num_lights = property(get_num_lights)
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def get_num_shadow_sources(self):
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return self._shadow_sources.get_num_entries()
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num_shadow_sources = property(get_num_shadow_sources)
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def set_shadow_manager(self, shadow_manager):
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self._shadow_manager = shadow_manager
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def get_shadow_manager(self):
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return self._shadow_manager
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shadow_manager = property(get_shadow_manager, set_shadow_manager)
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def set_command_list(self, cmd_list):
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self._cmd_list = cmd_list
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def set_camera_pos(self, pos):
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self._camera_pos = pos
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def set_shadow_update_distance(self, dist):
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self._shadow_update_distance = dist
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def add_light(self, light):
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if light.has_slot():
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print("ERROR: Cannot add light since it already has a slot!")
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return
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slot = self._lights.find_slot()
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if slot < 0:
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print("ERROR: Could not find a free slot for a new light!")
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return
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light.assign_slot(slot)
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self._lights.reserve_slot(slot, light)
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if light.get_casts_shadows():
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self.setup_shadows(light)
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self.gpu_update_light(light)
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def setup_shadows(self, light):
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light.init_shadow_sources()
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light.update_shadow_sources()
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num_sources = light.get_num_shadow_sources()
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base_slot = self._shadow_sources.find_consecutive_slots(num_sources)
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if base_slot < 0:
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print("ERROR: Failed to find slot for shadow sources!")
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return
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for i in range(num_sources):
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source = light.get_shadow_source(i)
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source.set_needs_update(True)
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slot = base_slot + i
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self._shadow_sources.reserve_slot(slot, source)
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source.set_slot(slot)
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def remove_light(self, light):
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assert light is not None
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if not light.has_slot():
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print("ERROR: Could not detach light, light was not attached!")
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return
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self._lights.free_slot(light.get_slot())
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self.gpu_remove_light(light)
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light.remove_slot()
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if light.get_casts_shadows():
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for i in range(light.get_num_shadow_sources()):
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source = light.get_shadow_source(i)
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if source.has_slot():
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self._shadow_sources.free_slot(source.get_slot())
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if source.has_region():
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self._shadow_manager.get_atlas().free_region(source.get_region())
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source.clear_region()
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self.gpu_remove_consecutive_sources(
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light.get_shadow_source(0), light.get_num_shadow_sources())
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light.clear_shadow_sources()
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def gpu_remove_consecutive_sources(self, first_source, num_sources):
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cmd_remove = GPUCommand(GPUCommand.CMD_remove_sources)
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cmd_remove.push_int(first_source.get_slot())
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cmd_remove.push_int(num_sources)
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self._cmd_list.add_command(cmd_remove)
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def gpu_remove_light(self, light):
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cmd_remove = GPUCommand(GPUCommand.CMD_remove_light)
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cmd_remove.push_int(light.get_slot())
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self._cmd_list.add_command(cmd_remove)
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def gpu_update_light(self, light):
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cmd_update = GPUCommand(GPUCommand.CMD_store_light)
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cmd_update.push_int(light.get_slot())
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light.write_to_command(cmd_update)
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light.set_needs_update(False)
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self._cmd_list.add_command(cmd_update)
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def gpu_update_source(self, source):
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cmd_update = GPUCommand(GPUCommand.CMD_store_source)
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cmd_update.push_int(source.get_slot())
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source.write_to_command(cmd_update)
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self._cmd_list.add_command(cmd_update)
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def update_lights(self):
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for light in self._lights.begin():
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if light.get_needs_update():
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if light.casts_shadows:
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light.update_shadow_sources()
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self.gpu_update_light(light)
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def update_shadow_sources(self):
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sources_to_update = []
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for source in self._shadow_sources.begin():
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# if source and source.get_needs_update():
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# sources_to_update.append(source)
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if source:
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bounds = source.get_bounds()
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distance_to_camera = (self._camera_pos - bounds.get_center()) - bounds.get_radius()
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if distance_to_camera < self._shadow_update_distance:
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sources_to_update.append(source)
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else:
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if source.has_region():
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self._shadow_manager.get_atlas().free_region(source.get_region())
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source.clear_region()
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def get_source_score(source):
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dist = (source.get_bounds().get_center() - self._camera_pos).length()
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return -dist + (10**10 if source.has_region() else 0)
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sorted_sources = list(sorted(sources_to_update, key=get_source_score))
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atlas = self._shadow_manager.get_atlas()
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update_slots = min(
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len(sorted_sources),
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self._shadow_manager.get_num_update_slots_left())
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for i in range(update_slots):
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if sorted_sources[i].has_region():
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atlas.free_region(sorted_sources[i].get_region())
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for i in range(update_slots):
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source = sorted_sources[i]
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if not self._shadow_manager.add_update(source):
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print("ERROR: Shadow manager ensured update slot, but slot is taken!")
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break
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region_size = atlas.get_required_tiles(source.get_resolution())
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new_region = atlas.find_and_reserve_region(region_size, region_size)
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new_uv_region = atlas.region_to_uv(new_region)
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source.set_region(new_region, new_uv_region)
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source.set_needs_update(False)
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self.gpu_update_source(source)
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def update(self):
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self.update_lights()
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self.update_shadow_sources()
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