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annotate pytouhou/ui/texture.pyx @ 434:18e4b121646b

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Move the common parts of EoSDGame outside, to not reallocate them at each stage.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 11 Aug 2013 14:30:52 +0200
parents 40d5f3083ebc
children d56536ef28e8
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52
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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14
423
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15 from pytouhou.lib.opengl cimport \
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16 (glTexParameteri, GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MAG_FILTER,
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17 GL_LINEAR, GL_BGRA, GL_RGBA, GL_RGB, GL_LUMINANCE, GL_UNSIGNED_BYTE,
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18 GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_4_4_4_4_REV,
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19 glGenTextures, glBindTexture, glTexImage2D, GL_TEXTURE_2D, GLuint,
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20 glDeleteTextures)
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21
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22 from pytouhou.lib.sdl import load_png, create_rgb_surface
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23 from pytouhou.formats.thtx import Texture #TODO: perhaps define that elsewhere?
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25 import os
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28 class TextureId(int):
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29 def __del__(self):
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30 cdef GLuint texture = self
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31 glDeleteTextures(1, &texture)
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34 class TextureManager(object):
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35 def __init__(self, loader=None):
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36 self.loader = loader
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39 def load(self, anm_list):
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40 for anm in anm_list:
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41 for entry in anm:
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42 if not hasattr(entry, 'texture'):
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43 texture = decode_png(self.loader, entry.first_name, entry.secondary_name)
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44 entry.texture = load_texture(texture)
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45 elif not isinstance(entry.texture, TextureId):
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46 entry.texture = load_texture(entry.texture)
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47
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48
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49 cdef decode_png(loader, first_name, secondary_name):
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50 image_file = load_png(loader.get_file(os.path.basename(first_name)))
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51 width, height = image_file.width, image_file.height
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52
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53 # Support only 32 bits RGBA. Paletted surfaces are awful to work with.
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54 #TODO: verify it doesn’t blow up on big-endian systems.
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55 new_image = create_rgb_surface(width, height, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000)
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56 new_image.blit(image_file)
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58 if secondary_name:
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59 alpha_file = load_png(loader.get_file(os.path.basename(secondary_name)))
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60 assert (width == alpha_file.width and height == alpha_file.height)
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62 new_alpha_file = create_rgb_surface(width, height, 24)
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63 new_alpha_file.blit(alpha_file)
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64
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65 new_image.set_alpha(new_alpha_file)
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67 return Texture(width, height, -4, new_image.pixels)
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68
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69
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70 cdef load_texture(thtx):
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71 cdef GLuint texture
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72
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73 if thtx.fmt == 1:
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74 format_ = GL_BGRA
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75 type_ = GL_UNSIGNED_BYTE
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76 composants = GL_RGBA
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77 elif thtx.fmt == 3:
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78 format_ = GL_RGB
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79 type_ = GL_UNSIGNED_SHORT_5_6_5
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80 composants = GL_RGB
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81 elif thtx.fmt == 5:
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82 format_ = GL_BGRA
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83 type_ = GL_UNSIGNED_SHORT_4_4_4_4_REV
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84 composants = GL_RGBA
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85 elif thtx.fmt == 7:
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86 format_ = GL_LUMINANCE
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87 type_ = GL_UNSIGNED_BYTE
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88 composants = GL_LUMINANCE
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89 elif thtx.fmt == -4: #XXX: non-standard
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90 format_ = GL_RGBA
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91 type_ = GL_UNSIGNED_BYTE
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92 composants = GL_RGBA
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93 else:
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94 raise Exception('Unknown texture type')
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95
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96 glGenTextures(1, &texture)
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97 glBindTexture(GL_TEXTURE_2D, texture)
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98 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
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99 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
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100
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101 glTexImage2D(GL_TEXTURE_2D, 0,
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102 composants,
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103 thtx.width, thtx.height,
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104 0,
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105 format_, type_,
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106 <char*>thtx.data)
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107
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108 return TextureId(texture)