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annotate pytouhou/ui/renderer.pyx @ 495:b32cef75df59

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Drop an useless dependency on Player from Orb, on Game from Laser.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Mon, 14 Oct 2013 12:12:52 +0200
parents feecdb4a8928
children c622eaf64428
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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
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15 from libc.stdlib cimport malloc, free
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16 from libc.string cimport memset
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17 from os.path import join
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18
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19 from pytouhou.lib.opengl cimport \
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20 (glVertexPointer, glTexCoordPointer, glColorPointer,
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21 glVertexAttribPointer, glEnableVertexAttribArray, glBlendFunc,
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22 glBindTexture, glDrawElements, glBindBuffer, glBufferData,
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23 GL_ARRAY_BUFFER, GL_DYNAMIC_DRAW, GL_UNSIGNED_BYTE,
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24 GL_UNSIGNED_SHORT, GL_INT, GL_FLOAT, GL_SRC_ALPHA,
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25 GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ZERO, GL_TEXTURE_2D, GL_TRIANGLES,
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26 glGenBuffers, glBindFramebuffer, glViewport, glDeleteBuffers,
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27 glGenTextures, glTexParameteri, glTexImage2D, glGenRenderbuffers,
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28 glBindRenderbuffer, glRenderbufferStorage, glGenFramebuffers,
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29 glFramebufferTexture2D, glFramebufferRenderbuffer,
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30 glCheckFramebufferStatus, GL_FRAMEBUFFER, GL_TEXTURE_MIN_FILTER,
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31 GL_LINEAR, GL_TEXTURE_MAG_FILTER, GL_RGBA, GL_RENDERBUFFER,
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32 GL_DEPTH_COMPONENT, GL_COLOR_ATTACHMENT0, GL_DEPTH_ATTACHMENT,
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33 GL_FRAMEBUFFER_COMPLETE, glClear, GL_COLOR_BUFFER_BIT,
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34 GL_DEPTH_BUFFER_BIT)
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35
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36 from pytouhou.lib.sdl import SDLError
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37
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38 from pytouhou.game.element cimport Element
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39 from .sprite cimport get_sprite_rendering_data
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40 from .texture import TextureManager, FontManager
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41
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42 from pytouhou.utils.helpers import get_logger
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43
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44 logger = get_logger(__name__)
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45
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46
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47 DEF MAX_ELEMENTS = 640*4*3
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48
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49
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50 cdef long find_objects(Renderer self, object elements) except -1:
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51 # Don’t type element as Element, or else the overriding of objects won’t work.
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52 cdef Element obj
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53 cdef long i = 0
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54 for element in elements:
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55 for obj in element.objects:
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56 sprite = obj.sprite
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57 if sprite and sprite.visible:
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58 # warning: no reference is preserved on the object—assuming the object will not die accidentally
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59 self.elements[i] = <PyObject*>obj
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60 i += 1
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61 if i >= 640*3-4:
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62 return i
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63 return i
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64
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65
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66 cdef class Renderer:
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67 def __cinit__(self):
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68 self.vertex_buffer = <Vertex*> malloc(MAX_ELEMENTS * sizeof(Vertex))
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69
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70
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71 def __dealloc__(self):
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72 free(self.vertex_buffer)
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73
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74 if not self.use_fixed_pipeline:
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75 glDeleteBuffers(1, &self.framebuffer_vbo)
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76 glDeleteBuffers(1, &self.vbo)
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77
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78
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79 def __init__(self, resource_loader):
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80 self.texture_manager = TextureManager(resource_loader, self)
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81 font_name = join(resource_loader.game_dir, 'font.ttf')
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82 try:
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83 self.font_manager = FontManager(font_name, 16, self)
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84 except SDLError:
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85 self.font_manager = None
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86 logger.error('Font file “%s” not found, disabling text rendering altogether.', font_name)
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87
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88 if not self.use_fixed_pipeline:
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89 glGenBuffers(1, &self.vbo)
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90 glGenBuffers(1, &self.framebuffer_vbo)
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91
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92
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93 def add_texture(self, int texture):
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94 for i in xrange(2):
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95 self.indices[i][texture] = <unsigned short*> malloc(65536 * sizeof(unsigned short))
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97
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98 def remove_texture(self, int texture):
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99 for i in xrange(2):
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100 free(self.indices[i][texture])
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101
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102
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103 cdef void render_elements(self, elements):
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104 cdef int key
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105 cdef int x1, y1, z1, x2, y2, z2, x3, y3, z3, x4, y4, z4, ox, oy
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106 cdef float left, right, bottom, top
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107 cdef unsigned char r, g, b, a
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108
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109 nb_vertices = 0
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110 memset(self.last_indices, 0, sizeof(self.last_indices))
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111
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112 nb_elements = find_objects(self, elements)
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113 for element_idx in xrange(nb_elements):
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114 element = <object>self.elements[element_idx]
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115 sprite = element.sprite
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116 ox, oy = element.x, element.y
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117 key, (vertices, uvs, colors) = get_sprite_rendering_data(sprite)
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118
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119 blendfunc = key // MAX_TEXTURES
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120 texture = key % MAX_TEXTURES
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parents: 435
diff changeset
121
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 435
diff changeset
122 rec = self.indices[blendfunc][texture]
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 435
diff changeset
123 next_indice = self.last_indices[key]
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
124
449
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
125 # Pack data in buffer
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
126 x1, x2, x3, x4, y1, y2, y3, y4, z1, z2, z3, z4 = vertices
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 435
diff changeset
127 left, right, bottom, top = uvs
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 435
diff changeset
128 r, g, b, a = colors
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
129 self.vertex_buffer[nb_vertices] = Vertex(x1 + ox, y1 + oy, z1, left, bottom, r, g, b, a)
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
130 self.vertex_buffer[nb_vertices+1] = Vertex(x2 + ox, y2 + oy, z2, right, bottom, r, g, b, a)
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parents: 435
diff changeset
131 self.vertex_buffer[nb_vertices+2] = Vertex(x3 + ox, y3 + oy, z3, right, top, r, g, b, a)
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
132 self.vertex_buffer[nb_vertices+3] = Vertex(x4 + ox, y4 + oy, z4, left, top, r, g, b, a)
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
133
449
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
134 # Add indices
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
135 rec[next_indice] = nb_vertices
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parents: 435
diff changeset
136 rec[next_indice+1] = nb_vertices + 1
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
137 rec[next_indice+2] = nb_vertices + 2
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
138 rec[next_indice+3] = nb_vertices + 2
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
139 rec[next_indice+4] = nb_vertices + 3
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
140 rec[next_indice+5] = nb_vertices
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 435
diff changeset
141 self.last_indices[key] += 6
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
142
449
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
143 nb_vertices += 4
222
5cac48b328ad Refactor rendering code a bit.
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parents:
diff changeset
144
410
9d790ca73c13 Don’t render null-sized arrays of elements.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 399
diff changeset
145 if nb_vertices == 0:
9d790ca73c13 Don’t render null-sized arrays of elements.
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parents: 399
diff changeset
146 return
9d790ca73c13 Don’t render null-sized arrays of elements.
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parents: 399
diff changeset
147
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
148 if self.use_fixed_pipeline:
423
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
149 glVertexPointer(3, GL_INT, sizeof(Vertex), &self.vertex_buffer[0].x)
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
150 glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), &self.vertex_buffer[0].u)
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
151 glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(Vertex), &self.vertex_buffer[0].r)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
152 else:
396
34a91f918e7c Use Buffer Objects instead of host pointers.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 395
diff changeset
153 glBindBuffer(GL_ARRAY_BUFFER, self.vbo)
423
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
154 glBufferData(GL_ARRAY_BUFFER, nb_vertices * sizeof(Vertex), &self.vertex_buffer[0], GL_DYNAMIC_DRAW)
396
34a91f918e7c Use Buffer Objects instead of host pointers.
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parents: 395
diff changeset
155
34a91f918e7c Use Buffer Objects instead of host pointers.
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parents: 395
diff changeset
156 #TODO: find a way to use offsetof() instead of those ugly hardcoded values.
423
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
157 glVertexAttribPointer(0, 3, GL_INT, False, sizeof(Vertex), <void*>0)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
158 glEnableVertexAttribArray(0)
423
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
159 glVertexAttribPointer(1, 2, GL_FLOAT, False, sizeof(Vertex), <void*>12)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
160 glEnableVertexAttribArray(1)
423
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
161 glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, True, sizeof(Vertex), <void*>20)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 394
diff changeset
162 glEnableVertexAttribArray(2)
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
163
449
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parents: 435
diff changeset
164 for key in xrange(2 * MAX_TEXTURES):
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parents: 435
diff changeset
165 nb_indices = self.last_indices[key]
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parents: 435
diff changeset
166 if not nb_indices:
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
167 continue
423
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parents: 412
diff changeset
168
449
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
169 blendfunc = key // MAX_TEXTURES
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
170 texture = key % MAX_TEXTURES
423
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parents: 412
diff changeset
171
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
172 glBlendFunc(GL_SRC_ALPHA, (GL_ONE_MINUS_SRC_ALPHA, GL_ONE)[blendfunc])
426
5d7bb2fd74f7 Never keep texture on the host when it has been uploaded, and prevent them from being decoded again.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 423
diff changeset
173 glBindTexture(GL_TEXTURE_2D, texture)
449
d56536ef28e8 Improve render_elements’ speed a lot, and fix it in some corner cases. Thanks liori!
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parents: 435
diff changeset
174 glDrawElements(GL_TRIANGLES, nb_indices, GL_UNSIGNED_SHORT, self.indices[blendfunc][texture])
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
175
396
34a91f918e7c Use Buffer Objects instead of host pointers.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 395
diff changeset
176 if not self.use_fixed_pipeline:
34a91f918e7c Use Buffer Objects instead of host pointers.
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parents: 395
diff changeset
177 glBindBuffer(GL_ARRAY_BUFFER, 0)
456
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parents: 449
diff changeset
178
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
179
468
feecdb4a8928 Add “except *” to cdef void functions, and type some more.
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parents: 464
diff changeset
180 cdef void render_quads(self, rects, colors, texture):
456
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
181 # There is nothing that batch more than two quads on the same texture, currently.
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parents: 449
diff changeset
182 cdef Vertex buf[8]
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parents: 449
diff changeset
183 cdef unsigned short indices[12]
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parents: 449
diff changeset
184 indices[:] = [0, 1, 2, 2, 3, 0, 4, 5, 6, 6, 7, 4]
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parents: 449
diff changeset
185
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
186 length = len(rects)
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parents: 449
diff changeset
187 assert length == len(colors)
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parents: 449
diff changeset
188
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
189 for i, r in enumerate(rects):
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
190 c1, c2, c3, c4 = colors[i]
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parents: 449
diff changeset
191
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
192 buf[4*i] = Vertex(r.x, r.y, 0, 0, 0, c1.r, c1.g, c1.b, c1.a)
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parents: 449
diff changeset
193 buf[4*i+1] = Vertex(r.x + r.w, r.y, 0, 1, 0, c2.r, c2.g, c2.b, c2.a)
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parents: 449
diff changeset
194 buf[4*i+2] = Vertex(r.x + r.w, r.y + r.h, 0, 1, 1, c3.r, c3.g, c3.b, c3.a)
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parents: 449
diff changeset
195 buf[4*i+3] = Vertex(r.x, r.y + r.h, 0, 0, 1, c4.r, c4.g, c4.b, c4.a)
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parents: 449
diff changeset
196
461
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
197 if self.use_fixed_pipeline:
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
198 glVertexPointer(3, GL_INT, sizeof(Vertex), &buf[0].x)
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parents: 456
diff changeset
199 glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), &buf[0].u)
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
200 glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(Vertex), &buf[0].r)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
201 else:
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
202 glBindBuffer(GL_ARRAY_BUFFER, self.vbo)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
203 glBufferData(GL_ARRAY_BUFFER, 4 * length * sizeof(Vertex), buf, GL_DYNAMIC_DRAW)
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
204
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
205 #TODO: find a way to use offsetof() instead of those ugly hardcoded values.
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parents: 456
diff changeset
206 glVertexAttribPointer(0, 3, GL_INT, False, sizeof(Vertex), <void*>0)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
207 glEnableVertexAttribArray(0)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
208 glVertexAttribPointer(1, 2, GL_FLOAT, False, sizeof(Vertex), <void*>12)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
209 glEnableVertexAttribArray(1)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
210 glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, True, sizeof(Vertex), <void*>20)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
211 glEnableVertexAttribArray(2)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
212
456
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
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parents: 449
diff changeset
213 glBindTexture(GL_TEXTURE_2D, texture)
cae1ae9de430 Add native text support, MSG instructions 3 and 8, and text at the beginning of a stage.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 449
diff changeset
214 glDrawElements(GL_TRIANGLES, 6 * length, GL_UNSIGNED_SHORT, indices)
461
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
215
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
216 if not self.use_fixed_pipeline:
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
217 glBindBuffer(GL_ARRAY_BUFFER, 0)
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
218
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
219
468
feecdb4a8928 Add “except *” to cdef void functions, and type some more.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 464
diff changeset
220 cdef void render_framebuffer(self, Framebuffer fb, Window window):
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
221 cdef PassthroughVertex[4] buf
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
222 cdef unsigned short indices[6]
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
223 indices[:] = [0, 1, 2, 2, 3, 0]
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
224
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
225 assert not self.use_fixed_pipeline
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
226
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
227 glBindFramebuffer(GL_FRAMEBUFFER, 0)
464
36bc577b2392 Make the window resizable, and scale its content correctly.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 462
diff changeset
228 glViewport(window.x, window.y, window.width, window.height)
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
229 glBlendFunc(GL_ONE, GL_ZERO)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
230 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
231
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
232 glBindBuffer(GL_ARRAY_BUFFER, self.framebuffer_vbo)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
233
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234 #TODO: find a way to use offsetof() instead of those ugly hardcoded values.
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235 glVertexAttribPointer(0, 2, GL_INT, False, sizeof(PassthroughVertex), <void*>0)
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236 glEnableVertexAttribArray(0)
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237 glVertexAttribPointer(1, 2, GL_FLOAT, False, sizeof(PassthroughVertex), <void*>8)
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238 glEnableVertexAttribArray(1)
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239
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240 buf[0] = PassthroughVertex(fb.x, fb.y, 0, 1)
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241 buf[1] = PassthroughVertex(fb.x + fb.width, fb.y, 1, 1)
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242 buf[2] = PassthroughVertex(fb.x + fb.width, fb.y + fb.height, 1, 0)
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243 buf[3] = PassthroughVertex(fb.x, fb.y + fb.height, 0, 0)
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244 glBufferData(GL_ARRAY_BUFFER, 4 * sizeof(PassthroughVertex), buf, GL_DYNAMIC_DRAW)
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245
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246 glBindTexture(GL_TEXTURE_2D, fb.texture)
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247 glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices)
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248 glBindTexture(GL_TEXTURE_2D, 0)
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249
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250 glBindBuffer(GL_ARRAY_BUFFER, 0)
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251
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252
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253 cdef class Framebuffer:
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254 def __init__(self, int x, int y, int width, int height):
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255 self.x = x
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256 self.y = y
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257 self.width = width
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258 self.height = height
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259
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260 glGenTextures(1, &self.texture)
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261 glBindTexture(GL_TEXTURE_2D, self.texture)
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262 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
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263 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
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264 glTexImage2D(GL_TEXTURE_2D, 0,
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265 GL_RGBA,
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266 width, height,
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267 0,
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268 GL_RGBA, GL_UNSIGNED_BYTE,
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269 NULL)
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270 glBindTexture(GL_TEXTURE_2D, 0)
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271
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272 glGenRenderbuffers(1, &self.rbo)
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273 glBindRenderbuffer(GL_RENDERBUFFER, self.rbo)
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274 glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height)
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275 glBindRenderbuffer(GL_RENDERBUFFER, 0)
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276
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277 glGenFramebuffers(1, &self.fbo)
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278 glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)
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279 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, self.texture, 0)
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280 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, self.rbo)
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281 assert glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE
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282 glBindFramebuffer(GL_FRAMEBUFFER, 0)
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283
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284 cpdef bind(self):
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285 glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)