forked from Rowland/EG
104 lines
3.8 KiB
Python
104 lines
3.8 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 panda3d.core import Vec4, SamplerState, BoundingVolume
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from rpcore.globals import Globals
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from rpcore.rpobject import RPObject
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from rpcore.image import Image
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class ProbeManager(RPObject):
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""" Manages all environment probes """
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def __init__(self):
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""" Initializes a new probe manager """
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RPObject.__init__(self)
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self.probes = []
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self.max_probes = 3
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self.resolution = 128
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self.diffuse_resolution = 4
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def init(self):
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""" Creates the cubemap storage """
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# Storage for the specular components (with mipmaps)
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self.cubemap_storage = Image.create_cube_array(
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"EnvmapStorage", self.resolution, self.max_probes, "RGBA16")
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self.cubemap_storage.set_minfilter(SamplerState.FT_linear_mipmap_linear)
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self.cubemap_storage.set_magfilter(SamplerState.FT_linear)
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self.cubemap_storage.set_clear_color(Vec4(1.0, 0.0, 0.1, 1.0))
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self.cubemap_storage.clear_image()
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# Storage for the diffuse component
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self.diffuse_storage = Image.create_cube_array(
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"EnvmapDiffStorage", self.diffuse_resolution, self.max_probes, "RGBA16")
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self.diffuse_storage.set_clear_color(Vec4(1, 0, 0.2, 1.0))
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self.diffuse_storage.clear_image()
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# Data-storage to store all cubemap properties
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self.dataset_storage = Image.create_buffer(
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"EnvmapData", self.max_probes * 5, "RGBA32")
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self.dataset_storage.set_clear_color(Vec4(0))
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self.dataset_storage.clear_image()
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def add_probe(self, probe):
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""" Adds a new probe """
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if len(self.probes) >= self.max_probes:
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self.error("Cannot attach probe, out of slots!")
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return False
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probe.last_update = -1
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probe.index = len(self.probes)
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self.probes.append(probe)
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return True
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def update(self):
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""" Updates the manager, updating all probes """
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ptr = self.dataset_storage.modify_ram_image()
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for probe in self.probes:
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if probe.modified:
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probe.write_to_buffer(ptr)
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@property
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def num_probes(self):
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return len(self.probes)
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def find_probe_to_update(self):
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""" Finds the next probe which requires an update, or returns None """
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if not self.probes:
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return None
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view_frustum = Globals.base.camLens.make_bounds()
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view_frustum.xform(Globals.base.cam.get_transform(Globals.base.render).get_mat())
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def rating(probe):
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return probe.last_update
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for candidate in sorted(self.probes, key=rating):
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if view_frustum.contains(candidate.bounds) == BoundingVolume.IF_no_intersection:
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continue
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return candidate
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return None
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