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annotate pytouhou/ui/opengl/renderer.pyx @ 554:653a9f087673

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Make both double- and single-buffer available on the CLI, but default to SDL’s default.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 30 May 2014 04:06:09 +0200
parents d6d9a711253d
children 94725968dabb
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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
222
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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_SHORT, 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, GLuint, glDeleteTextures,
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35 GL_ELEMENT_ARRAY_BUFFER, GL_STATIC_DRAW)
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36
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37 from pytouhou.lib.sdl import SDLError
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38
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39 from pytouhou.game.element cimport Element
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40 from .sprite cimport get_sprite_rendering_data
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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 cdef class Texture:
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48 def __cinit__(self, GLuint texture, Renderer renderer):
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49 self.texture = texture
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50
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51 # Find an unused key in the textures array.
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52 for key in xrange(MAX_TEXTURES):
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53 if renderer.textures[key] == 0:
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54 break
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55 else:
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56 raise MemoryError('Too many textures currently loaded, consider increasing MAX_TEXTURES (currently %d).' % MAX_TEXTURES)
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57
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58 self.key = key
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59 self.pointer = &renderer.textures[key]
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60 self.pointer[0] = texture
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61 for i in xrange(2):
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62 renderer.indices[key][i] = self.indices[i]
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63
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64 #XXX: keep a reference so that when __dealloc__ is called self.pointer is still valid.
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65 self.renderer = renderer
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66
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67 def __dealloc__(self):
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68 if self.texture:
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69 glDeleteTextures(1, &self.texture)
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70 if self.pointer != NULL:
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71 self.pointer[0] = 0
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72 # The dangling pointers in renderer.indices doesn’t matter, since we
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73 # won’t use them if no texture is loaded in that slot.
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74
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75
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76 cdef long find_objects(Renderer self, object elements) except -1:
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77 # Don’t type element as Element, or else the overriding of objects won’t work.
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78 cdef Element obj
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79 cdef long i = 0
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80 for element in elements:
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81 for obj in element.objects:
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82 sprite = obj.sprite
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83 if sprite and sprite.visible:
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84 # warning: no reference is preserved on the object—assuming the object will not die accidentally
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85 self.elements[i] = <PyObject*>obj
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86 i += 1
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87 if i >= 640*3-4:
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88 return i
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89 return i
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90
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91
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92 cdef class Renderer:
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93 def __dealloc__(self):
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94 if not self.use_fixed_pipeline:
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95 glDeleteBuffers(1, &self.framebuffer_vbo)
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96 glDeleteBuffers(1, &self.vbo)
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97
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98
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99 def __init__(self, resource_loader):
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100 # Only used in modern GL.
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101 cdef unsigned short framebuffer_indices[6]
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102
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103 self.texture_manager = TextureManager(resource_loader, self, Texture)
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104 font_name = join(resource_loader.game_dir, 'font.ttf')
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105 try:
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106 self.font_manager = FontManager(font_name, 16, self, Texture)
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107 except SDLError:
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108 self.font_manager = None
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109 logger.error('Font file “%s” not found, disabling text rendering altogether.', font_name)
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110
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111 if not self.use_fixed_pipeline:
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112 framebuffer_indices[:] = [0, 1, 2, 2, 3, 0]
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113
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114 glGenBuffers(1, &self.vbo)
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115 glGenBuffers(1, &self.framebuffer_vbo)
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116 glGenBuffers(1, &self.framebuffer_ibo)
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117
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118 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self.framebuffer_ibo)
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diff changeset
119 glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(framebuffer_indices), framebuffer_indices, GL_STATIC_DRAW)
c0b3f8709f74 Store the indices of the framebuffer in a static ibo.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 518
diff changeset
120 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0)
423
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parents: 412
diff changeset
121
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
122
468
feecdb4a8928 Add “except *” to cdef void functions, and type some more.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 464
diff changeset
123 cdef void render_elements(self, elements):
532
dacdcca59b66 Don’t put back the rendering data into a tuple, use a specialised struct inside Sprite to pass it to the renderer.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 520
diff changeset
124 cdef Element element
301
6f1ca1cb5238 Avoid segfaults in the unlikely case a huge number of sprites is rendered.
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parents: 245
diff changeset
125
505
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parents: 503
diff changeset
126 nb_elements = find_objects(self, elements)
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parents: 503
diff changeset
127 if not nb_elements:
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parents: 503
diff changeset
128 return
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diff changeset
129
449
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parents: 435
diff changeset
130 nb_vertices = 0
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parents: 435
diff changeset
131 memset(self.last_indices, 0, sizeof(self.last_indices))
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parents: 435
diff changeset
132
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parents: 435
diff changeset
133 for element_idx in xrange(nb_elements):
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parents: 435
diff changeset
134 element = <object>self.elements[element_idx]
532
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parents: 520
diff changeset
135 ox, oy = <short>element.x, <short>element.y
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parents: 520
diff changeset
136 data = get_sprite_rendering_data(element.sprite)
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 520
diff changeset
137 key = data.key
449
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parents: 435
diff changeset
138
505
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parents: 503
diff changeset
139 blendfunc = key & 1
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parents: 503
diff changeset
140 texture = key >> 1
449
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parents: 435
diff changeset
141
505
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parents: 503
diff changeset
142 rec = self.indices[texture][blendfunc]
449
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 435
diff changeset
143 next_indice = self.last_indices[key]
222
5cac48b328ad Refactor rendering code a bit.
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parents:
diff changeset
144
449
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parents: 435
diff changeset
145 # Pack data in buffer
532
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parents: 520
diff changeset
146 x1, x2, x3, x4, y1, y2, y3, y4, z1, z2, z3, z4 = <short>data.pos[0], <short>data.pos[1], <short>data.pos[2], <short>data.pos[3], <short>data.pos[4], <short>data.pos[5], <short>data.pos[6], <short>data.pos[7], <short>data.pos[8], <short>data.pos[9], <short>data.pos[10], <short>data.pos[11]
dacdcca59b66 Don’t put back the rendering data into a tuple, use a specialised struct inside Sprite to pass it to the renderer.
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parents: 520
diff changeset
147 r, g, b, a = data.color[0], data.color[1], data.color[2], data.color[3]
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parents: 520
diff changeset
148 self.vertex_buffer[nb_vertices] = Vertex(x1 + ox, y1 + oy, z1, 0, data.left, data.bottom, r, g, b, a)
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parents: 520
diff changeset
149 self.vertex_buffer[nb_vertices+1] = Vertex(x2 + ox, y2 + oy, z2, 0, data.right, data.bottom, r, g, b, a)
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parents: 520
diff changeset
150 self.vertex_buffer[nb_vertices+2] = Vertex(x3 + ox, y3 + oy, z3, 0, data.right, data.top, r, g, b, a)
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parents: 520
diff changeset
151 self.vertex_buffer[nb_vertices+3] = Vertex(x4 + ox, y4 + oy, z4, 0, data.left, data.top, r, g, b, a)
222
5cac48b328ad Refactor rendering code a bit.
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parents:
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152
449
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parents: 435
diff changeset
153 # Add indices
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parents: 435
diff changeset
154 rec[next_indice] = nb_vertices
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parents: 435
diff changeset
155 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
156 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
157 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
158 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
159 rec[next_indice+5] = nb_vertices
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parents: 435
diff changeset
160 self.last_indices[key] += 6
222
5cac48b328ad Refactor rendering code a bit.
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parents:
diff changeset
161
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
162 nb_vertices += 4
222
5cac48b328ad Refactor rendering code a bit.
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parents:
diff changeset
163
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
164 if self.use_fixed_pipeline:
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 515
diff changeset
165 glVertexPointer(3, GL_SHORT, sizeof(Vertex), &self.vertex_buffer[0].x)
423
d8630c086926 Replace Pyglet with our own Cython OpenGL wrapper.
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parents: 412
diff changeset
166 glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), &self.vertex_buffer[0].u)
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parents: 412
diff changeset
167 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
168 else:
396
34a91f918e7c Use Buffer Objects instead of host pointers.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 395
diff changeset
169 glBindBuffer(GL_ARRAY_BUFFER, self.vbo)
423
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parents: 412
diff changeset
170 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
171
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parents: 395
diff changeset
172 #TODO: find a way to use offsetof() instead of those ugly hardcoded values.
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 515
diff changeset
173 glVertexAttribPointer(0, 3, GL_SHORT, False, sizeof(Vertex), <void*>0)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
174 glEnableVertexAttribArray(0)
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 515
diff changeset
175 glVertexAttribPointer(1, 2, GL_FLOAT, False, sizeof(Vertex), <void*>8)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
176 glEnableVertexAttribArray(1)
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
177 glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, True, sizeof(Vertex), <void*>16)
395
43413d4ff05b Don’t change the vertex attributes for each texture.
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parents: 394
diff changeset
178 glEnableVertexAttribArray(2)
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parents: 394
diff changeset
179
505
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diff changeset
180 # Don’t change the state when it’s not needed.
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diff changeset
181 previous_blendfunc = -1
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diff changeset
182 previous_texture = -1
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diff changeset
183
449
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parents: 435
diff changeset
184 for key in xrange(2 * MAX_TEXTURES):
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parents: 435
diff changeset
185 nb_indices = self.last_indices[key]
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parents: 435
diff changeset
186 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
187 continue
423
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parents: 412
diff changeset
188
505
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parents: 503
diff changeset
189 blendfunc = key & 1
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parents: 503
diff changeset
190 texture = key >> 1
423
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parents: 412
diff changeset
191
505
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parents: 503
diff changeset
192 if blendfunc != previous_blendfunc:
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parents: 503
diff changeset
193 glBlendFunc(GL_SRC_ALPHA, (GL_ONE_MINUS_SRC_ALPHA, GL_ONE)[blendfunc])
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parents: 503
diff changeset
194 if texture != previous_texture:
515
b3193b43a86c Add an indirection layer for textures, to cope with drivers assigning them random names.
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parents: 513
diff changeset
195 glBindTexture(GL_TEXTURE_2D, self.textures[texture])
505
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parents: 503
diff changeset
196 glDrawElements(GL_TRIANGLES, nb_indices, GL_UNSIGNED_SHORT, self.indices[texture][blendfunc])
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parents: 503
diff changeset
197
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parents: 503
diff changeset
198 previous_blendfunc = blendfunc
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diff changeset
199 previous_texture = texture
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diff changeset
200
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parents: 503
diff changeset
201 glBindTexture(GL_TEXTURE_2D, 0)
222
5cac48b328ad Refactor rendering code a bit.
Thibaut Girka <thib@sitedethib.com>
parents:
diff changeset
202
396
34a91f918e7c Use Buffer Objects instead of host pointers.
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parents: 395
diff changeset
203 if not self.use_fixed_pipeline:
34a91f918e7c Use Buffer Objects instead of host pointers.
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parents: 395
diff changeset
204 glBindBuffer(GL_ARRAY_BUFFER, 0)
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
205
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
206
505
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parents: 503
diff changeset
207 cdef void render_quads(self, rects, colors, GLuint 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
208 # There is nothing that batch more than two quads on the same texture, currently.
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parents: 449
diff changeset
209 cdef Vertex buf[8]
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parents: 449
diff changeset
210 cdef unsigned short indices[12]
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parents: 449
diff changeset
211 indices[:] = [0, 1, 2, 2, 3, 0, 4, 5, 6, 6, 7, 4]
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parents: 449
diff changeset
212
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 length = len(rects)
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parents: 449
diff changeset
214 assert length == len(colors)
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parents: 449
diff changeset
215
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parents: 449
diff changeset
216 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
217 c1, c2, c3, c4 = colors[i]
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parents: 449
diff changeset
218
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
219 buf[4*i] = Vertex(r.x, r.y, 0, 0, 0, 0, c1.r, c1.g, c1.b, c1.a)
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parents: 515
diff changeset
220 buf[4*i+1] = Vertex(r.x + r.w, r.y, 0, 0, 1, 0, c2.r, c2.g, c2.b, c2.a)
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
221 buf[4*i+2] = Vertex(r.x + r.w, r.y + r.h, 0, 0, 1, 1, c3.r, c3.g, c3.b, c3.a)
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
222 buf[4*i+3] = Vertex(r.x, r.y + r.h, 0, 0, 0, 1, c4.r, c4.g, c4.b, c4.a)
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
223
461
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
224 if self.use_fixed_pipeline:
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 515
diff changeset
225 glVertexPointer(3, GL_SHORT, sizeof(Vertex), &buf[0].x)
461
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
226 glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), &buf[0].u)
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parents: 456
diff changeset
227 glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(Vertex), &buf[0].r)
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
228 else:
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diff changeset
229 glBindBuffer(GL_ARRAY_BUFFER, self.vbo)
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parents: 456
diff changeset
230 glBufferData(GL_ARRAY_BUFFER, 4 * length * sizeof(Vertex), buf, GL_DYNAMIC_DRAW)
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parents: 456
diff changeset
231
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
232 #TODO: find a way to use offsetof() instead of those ugly hardcoded values.
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
233 glVertexAttribPointer(0, 3, GL_SHORT, False, sizeof(Vertex), <void*>0)
461
6af3854ed826 Make NativeText work with the fixed pipeline.
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diff changeset
234 glEnableVertexAttribArray(0)
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
235 glVertexAttribPointer(1, 2, GL_FLOAT, False, sizeof(Vertex), <void*>8)
461
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
236 glEnableVertexAttribArray(1)
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
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parents: 515
diff changeset
237 glVertexAttribPointer(2, 4, GL_UNSIGNED_BYTE, True, sizeof(Vertex), <void*>16)
461
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
238 glEnableVertexAttribArray(2)
6af3854ed826 Make NativeText work with the fixed pipeline.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 456
diff changeset
239
539
d6d9a711253d Fix text sometimes being drawn with a wrong blend func.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 537
diff changeset
240 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
456
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
241 glBindTexture(GL_TEXTURE_2D, texture)
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
242 glDrawElements(GL_TRIANGLES, 6 * length, GL_UNSIGNED_SHORT, indices)
461
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
243
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
244 if not self.use_fixed_pipeline:
6af3854ed826 Make NativeText work with the fixed pipeline.
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parents: 456
diff changeset
245 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
246
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
247
503
c622eaf64428 Optimize GameRunner some more, fix replay, and remove Window dependency in Renderer.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 468
diff changeset
248 cdef void render_framebuffer(self, Framebuffer fb):
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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diff changeset
249 cdef PassthroughVertex[4] buf
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diff changeset
250
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
251 assert not self.use_fixed_pipeline
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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diff changeset
252
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
253 glBindFramebuffer(GL_FRAMEBUFFER, 0)
503
c622eaf64428 Optimize GameRunner some more, fix replay, and remove Window dependency in Renderer.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 468
diff changeset
254 glViewport(self.x, self.y, self.width, self.height)
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
255 glBlendFunc(GL_ONE, GL_ZERO)
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parents: 461
diff changeset
256 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
257
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
258 glBindBuffer(GL_ARRAY_BUFFER, self.framebuffer_vbo)
520
c0b3f8709f74 Store the indices of the framebuffer in a static ibo.
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parents: 518
diff changeset
259 glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, self.framebuffer_ibo)
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
260
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
261 #TODO: find a way to use offsetof() instead of those ugly hardcoded values.
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 515
diff changeset
262 glVertexAttribPointer(0, 2, GL_SHORT, False, sizeof(PassthroughVertex), <void*>0)
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
263 glEnableVertexAttribArray(0)
518
75ae628522c9 Use shorts instead of ints for vertex position, reducing the size of a vertex to 20 bytes from 24.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 515
diff changeset
264 glVertexAttribPointer(1, 2, GL_FLOAT, False, sizeof(PassthroughVertex), <void*>4)
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
265 glEnableVertexAttribArray(1)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
266
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
267 buf[0] = PassthroughVertex(fb.x, fb.y, 0, 1)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
268 buf[1] = PassthroughVertex(fb.x + fb.width, fb.y, 1, 1)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
269 buf[2] = PassthroughVertex(fb.x + fb.width, fb.y + fb.height, 1, 0)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
270 buf[3] = PassthroughVertex(fb.x, fb.y + fb.height, 0, 0)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
271 glBufferData(GL_ARRAY_BUFFER, 4 * sizeof(PassthroughVertex), buf, GL_DYNAMIC_DRAW)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
272
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
273 glBindTexture(GL_TEXTURE_2D, fb.texture)
520
c0b3f8709f74 Store the indices of the framebuffer in a static ibo.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 518
diff changeset
274 glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, NULL)
462
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
275 glBindTexture(GL_TEXTURE_2D, 0)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
276
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
277 glBindBuffer(GL_ARRAY_BUFFER, 0)
520
c0b3f8709f74 Store the indices of the framebuffer in a static ibo.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 518
diff changeset
278 glBindBuffer(GL_ELEMENT_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
279
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
280
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
281 cdef class Framebuffer:
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
282 def __init__(self, int x, int y, int width, int height):
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
283 self.x = x
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parents: 461
diff changeset
284 self.y = y
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diff changeset
285 self.width = width
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
286 self.height = height
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parents: 461
diff changeset
287
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
288 glGenTextures(1, &self.texture)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
289 glBindTexture(GL_TEXTURE_2D, self.texture)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
290 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
291 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
292 glTexImage2D(GL_TEXTURE_2D, 0,
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
293 GL_RGBA,
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
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parents: 461
diff changeset
294 width, height,
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
295 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
296 GL_RGBA, GL_UNSIGNED_BYTE,
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
297 NULL)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
298 glBindTexture(GL_TEXTURE_2D, 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
299
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
300 glGenRenderbuffers(1, &self.rbo)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
301 glBindRenderbuffer(GL_RENDERBUFFER, self.rbo)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
302 glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
303 glBindRenderbuffer(GL_RENDERBUFFER, 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
304
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
305 glGenFramebuffers(1, &self.fbo)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
306 glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
307 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, self.texture, 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
308 glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, self.rbo)
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
309 assert glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
310 glBindFramebuffer(GL_FRAMEBUFFER, 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
311
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
312 cpdef bind(self):
a71b912b45b7 Render to framebuffers first, and reposition some interface elements in the game area.
Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 461
diff changeset
313 glBindFramebuffer(GL_FRAMEBUFFER, self.fbo)