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annotate pytouhou/ui/opengl/backend.pyx @ 580:8a8c2e519637

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Make setup.py chdir into our root directory, to prevent it to fail when called from elsewhere.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 04 Sep 2014 21:07:45 +0200
parents b8df946d394d
children 6e79756b7f42
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8f51e34d911c Refactor graphics backend selection, to make them fallbackable and optional.
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1 from pytouhou.lib cimport sdl
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2 from pytouhou.lib.sdl cimport Window
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3
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4 from pytouhou.lib.opengl cimport \
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5 (glEnable, glHint, glEnableClientState, GL_TEXTURE_2D, GL_BLEND,
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6 GL_PERSPECTIVE_CORRECTION_HINT, GL_FOG_HINT, GL_NICEST,
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7 GL_COLOR_ARRAY, GL_VERTEX_ARRAY, GL_TEXTURE_COORD_ARRAY,
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8 glPushDebugGroup, GL_DEBUG_SOURCE_APPLICATION, glPopDebugGroup)
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9
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10
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11 GameRenderer = None
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12
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13
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14 def init(options):
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15 global flavor, version, major, minor, double_buffer, is_legacy, use_vao, shader_header, GameRenderer
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16
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17 flavor_name = options['flavor']
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18 assert flavor_name in ('core', 'es', 'compatibility', 'legacy')
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19 flavor = (sdl.GL_CONTEXT_PROFILE_CORE if flavor_name == 'core' else
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20 sdl.GL_CONTEXT_PROFILE_ES if flavor_name == 'es' else
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21 sdl.GL_CONTEXT_PROFILE_COMPATIBILITY)
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22
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23 version = str(options['version'])
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24 assert len(version) == 3 and version[1] == '.'
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25 major = int(version[0])
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26 minor = int(version[2])
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27
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28 maybe_double_buffer = options['double-buffer']
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29 double_buffer = maybe_double_buffer if maybe_double_buffer is not None else -1
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30 use_vao = (major == 3 and minor >= 1) or major > 3
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31
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32 is_legacy = flavor_name == 'legacy'
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33 is_gles = flavor_name == 'es'
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34
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35 if not is_gles:
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36 try:
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37 glsl_version = {'2.0': 110, '2.1': 120, '3.0': 130, '3.1': 140, '3.2': 150}[version]
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38 except KeyError:
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39 assert (major == 3 and minor == 3) or major > 3
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40 glsl_version = 100 * major + 10 * minor
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41 shader_header = '#version %d\n' % glsl_version
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42 else:
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43 glsl_version = {'2.0': 100, '3.0': 300}[version]
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44 shader_header = '#version %d\n\nprecision highp float;\n' % glsl_version
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45
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46 #TODO: check for framebuffer/renderbuffer support.
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47
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48 from pytouhou.ui.opengl.gamerenderer import GameRenderer
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50
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51 def create_window(title, x, y, width, height):
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52 sdl.gl_set_attribute(sdl.GL_CONTEXT_PROFILE_MASK, flavor)
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53 sdl.gl_set_attribute(sdl.GL_CONTEXT_MAJOR_VERSION, major)
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54 sdl.gl_set_attribute(sdl.GL_CONTEXT_MINOR_VERSION, minor)
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55 sdl.gl_set_attribute(sdl.GL_DEPTH_SIZE, 24)
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56 if double_buffer >= 0:
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57 sdl.gl_set_attribute(sdl.GL_DOUBLEBUFFER, double_buffer)
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58
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59 flags = sdl.WINDOW_SHOWN | sdl.WINDOW_OPENGL
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60
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61 #TODO: legacy can support one of the framebuffer extensions.
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62 if not is_legacy:
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63 flags |= sdl.WINDOW_RESIZABLE
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64
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65 window = Window(title, x, y, width, height, flags)
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66 window.gl_create_context()
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67
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68 # Initialize OpenGL
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69 glPushDebugGroup(GL_DEBUG_SOURCE_APPLICATION, 0, -1, "OpenGL initialisation")
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70 glEnable(GL_BLEND)
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71 if is_legacy:
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72 glEnable(GL_TEXTURE_2D)
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73 glHint(GL_FOG_HINT, GL_NICEST)
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74 glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST)
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75 glEnableClientState(GL_COLOR_ARRAY)
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76 glEnableClientState(GL_VERTEX_ARRAY)
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77 glEnableClientState(GL_TEXTURE_COORD_ARRAY)
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78 glPopDebugGroup()
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79
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80 return window