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annotate pytouhou/ui/texture.pyx @ 301:6f1ca1cb5238

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Avoid segfaults in the unlikely case a huge number of sprites is rendered.
author Thibaut Girka <thib@sitedethib.com>
date Sat, 10 Mar 2012 20:30:55 +0100
parents 98c64ffcbdff
children 71cd4461bb7f
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ab826bc29aa2 Add some documentation, GPLv3 headers, README and COPYING file.
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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15 import pyglet
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16 from pyglet.gl import (glTexParameteri,
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17 GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
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18 import os
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21 cdef class TextureManager:
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22 def __init__(self, loader=None):
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23 self.loader = loader
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24 self.textures = {}
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27 def __getitem__(self, key):
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28 if not key in self.textures:
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29 self.textures[key] = self.load_texture(key)
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30 return self.textures[key]
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33 def preload(self, anm_wrapper):
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34 try:
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35 anms = anm_wrapper.anm_files
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36 except AttributeError:
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37 anms = anm_wrapper
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39 for anm in anms:
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40 key = anm.first_name, anm.secondary_name
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41 texture = self[key]
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44 def load_texture(self, key):
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45 first_name, secondary_name = key
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47 image_file = pyglet.image.load(first_name, file=self.loader.get_file(os.path.basename(first_name)))
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49 if secondary_name:
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50 alpha_file = pyglet.image.load(secondary_name, file=self.loader.get_file(os.path.basename(secondary_name)))
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51 assert (image_file.width, image_file.height) == (alpha_file.width, image_file.height)
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53 data = image_file.get_data('RGB', image_file.width * 3)
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54 alpha_data = alpha_file.get_data('RGB', image_file.width * 3)
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55 image_file = pyglet.image.ImageData(image_file.width, image_file.height, 'RGBA', b''.join(data[i*3:i*3+3] + alpha_data[i*3] for i in range(image_file.width * image_file.height)))
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57 #TODO: improve perfs somehow
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59 texture = image_file.get_texture()
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61 glTexParameteri(texture.target, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
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62 glTexParameteri(texture.target, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
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64 return texture
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