116 lines
4.2 KiB
Python
116 lines
4.2 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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import time
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import hashlib
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from panda3d.core import PStatCollector, Mat4, Point4, Vec3
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from rpcore.globals import Globals
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def rgb_from_string(text, min_brightness=0.6):
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""" Creates a rgb color from a given string """
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ohash = hashlib.md5(text[::-1].encode("ascii")).hexdigest()
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r, g, b = int(ohash[0:2], 16), int(ohash[2:4], 16), int(ohash[4:6], 16)
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neg_inf = 1.0 - min_brightness
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return (min_brightness + r / 255.0 * neg_inf,
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min_brightness + g / 255.0 * neg_inf,
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min_brightness + b / 255.0 * neg_inf)
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def profile(func):
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""" Handy decorator which can be used to profile a function with pstats """
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collector_name = "Debug:%s" % func.__name__
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global_showbase = Globals.base
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# Insert the collector to a custom dictionary attached to the base
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if hasattr(global_showbase, 'custom_collectors'):
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if collector_name in global_showbase.custom_collectors.keys():
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pstat = global_showbase.custom_collectors[collector_name]
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else:
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global_showbase.custom_collectors[collector_name] = \
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PStatCollector(collector_name)
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pstat = global_showbase.custom_collectors[collector_name]
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else:
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pstat = PStatCollector(collector_name)
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global_showbase.custom_collectors = {}
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global_showbase.custom_collectors[collector_name] = pstat
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def do_pstat(*args, **kargs):
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pstat.start()
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returned = func(*args, **kargs)
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pstat.stop()
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return returned
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do_pstat.__name__ = func.__name__
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do_pstat.__dict__ = func.__dict__
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do_pstat.__doc__ = func.__doc__
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return do_pstat
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class profile_cpu(object): # noqa # pylint: disable=invalid-name,too-few-public-methods
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"""
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Context manager for profiling CPU duration. This is useful for timing
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loading of files or other CPU-heavy operations. Example usage:
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with profile_cpu("Some Task"):
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some_slow_operation()
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Duration of the process will be print out on the console later on.
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"""
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def __init__(self, name):
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self.name = name
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def __enter__(self):
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self.start_time = time.process_time()
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def __exit__(self, *args):
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duration = (time.process_time() - self.start_time) * 1000.0
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print(self.name, "took", round(duration, 2), "ms ")
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def snap_shadow_map(mvp, cam_node, resolution):
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""" 'Snaps' a shadow map to make sure it always is on full texel centers.
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This ensures no flickering occurs while moving the shadow map.
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This works by projecting the Point (0,0,0) to light space, compute the
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texcoord differences and offset the light world space position by that. """
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mvp = Mat4(mvp)
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base_point = mvp.xform(Point4(0, 0, 0, 1)) * 0.5 + 0.5
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texel_size = 1.0 / float(resolution)
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offset_x = base_point.x % texel_size
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offset_y = base_point.y % texel_size
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mvp.invert_in_place()
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new_base = mvp.xform(Point4(
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(base_point.x - offset_x) * 2.0 - 1.0,
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(base_point.y - offset_y) * 2.0 - 1.0,
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(base_point.z) * 2.0 - 1.0, 1))
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cam_node.set_pos(cam_node.get_pos() - Vec3(new_base.x, new_base.y, new_base.z))
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