source: src/materials/Textured.pym @ 1228:9f59e6a11ccb

Revision 1228:9f59e6a11ccb, 6.9 KB checked in by Arc Riley <arcriley@…>, 5 years ago (diff)

Pyrex 0.9.8.2 fixes :

  • now compiles and runs!
  • Render loop is not set nogil yet - this still needs to be done
Line 
1# PySoy's materials.Textured class
2#
3# Copyright (C) 2006,2007,2008 PySoy Group
4#
5#  This program is free software; you can redistribute it and/or modify
6#  it under the terms of the GNU Affero General Public License as published
7#  by the Free Software Foundation, either version 3 of the License, or
8#  (at your option) any later version.
9#
10#  This program is distributed in the hope that it will be useful,
11#  but WITHOUT ANY WARRANTY; without even the implied warranty of
12#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13#  GNU Affero General Public License for more details.
14#
15#  You should have received a copy of the GNU Affero General Public License
16#  along with this program; if not, see http://www.gnu.org/licenses
17#
18# $Id: Material.pxi 1206 2008-03-22 18:42:26Z ArcRiley $
19
20cdef class Textured(Material) :
21  '''soy.materials.Textured
22
23    Textured materials support one or more basic textures in addition to the
24    standard Material colors (ambient, diffuse, specular, emission) which
25    are multiplied by the texture color to provide light-based shading.
26   
27    Currently .colormap and .glowmap are supported.
28  '''
29
30  ############################################################################
31  #
32  # Python functions
33  #
34
35  def __cinit__(self,
36                soy.colors.Color ambient=None,
37                soy.colors.Color diffuse=None,
38                soy.colors.Color specular=None,
39                soy.colors.Color emissive=None,
40                float shininess=0.5,
41                soy.textures.Texture colormap=None,
42                soy.textures.Texture glowmap=None) :
43    ######################################
44    #
45    # import soy.colors locally for setting defaults
46    #
47    import soy.colors
48    #
49    ######################################
50    #
51    # assign each color as argument or default
52    #
53    # None should never be stored in these values so that
54    # we can use ._rgba without testing each first in _render
55    #
56    if ambient :
57      self._ambient = ambient
58    else :
59      self._ambient = soy.colors.white
60    if diffuse :
61      self._diffuse = diffuse
62    else :
63      self._diffuse = soy.colors.white
64    if specular :
65      self._specular = specular
66    else :
67      self._specular = soy.colors.white
68    if emissive :
69      self._emissive = emissive
70    else :
71      self._emissive = soy.colors.black
72    #
73    ######################################
74    #
75    # shininess is the size of the specularity dot
76    #
77    self._shininess = shininess
78    #
79    ######################################
80    #
81    # store the texture arguments
82    #
83    self._colormap = colormap
84    self._glowmap  = glowmap
85    #
86    ######################################
87
88
89  ############################################################################
90  #
91  # Properties
92  #
93
94  property colormap :
95    '''soy.materials.Textured.colormap
96
97    When a texture is assigned to this property a colormap texture is rendered.
98
99    In OpenGL terms, this texture is set GL_MODULATE to the lit material color
100    which provides it's shading.  Textures with an alpha component will be
101    translucent to the material's lit color, so to achieve actual translucency
102    this material's colors (ambient/diffuse) must also be translucent.
103
104    Default is None (disabled).
105    '''
106   
107    def __get__(self) :
108      return self._colormap
109
110    def __set__(self, soy.textures.Texture _value) :
111      self._colormap = _value
112
113    def __del__(self) :
114      self._colormap = None
115
116
117  property glowmap :
118    '''soy.materials.Textured.glowmap
119
120    When a texture is assigned to this property a glowmap texture is rendered.
121
122    In OpenGL terms, this texture is set GL_ADD.
123
124    Default is None (disabled).
125    '''
126   
127    def __get__(self) :
128      return self._glowmap
129
130    def __set__(self, soy.textures.Texture _value) :
131      self._glowmap = _value
132
133    def __del__(self) :
134      self._glowmap = None
135
136
137  ############################################################################
138  #
139  # General C functions
140  #
141  cdef int _isTransparent(self):
142    #
143    # textures are only translucent to the colors, so if either lack
144    # translucency this check will return False
145    #
146    if self._colormap is not None and self._colormap._chans %2 == 1 :
147      return 0
148    if self._ambient._rgba[3] != 1.0 :
149      return 1
150    if self._diffuse._rgba[3] != 1.0 :
151      return 1
152    return 0
153
154
155  ############################################################################
156  #
157  # WindowLoop functions
158  #
159
160  cdef int _render(self, int _pass, float* _texcoords, float* _tslvs) nogil :
161    cdef int _i, _unit=0
162    ######################################
163    #
164    # Textured materials are 1-pass
165    #
166    if _pass == 0 :
167      ####################################
168      #
169      # number of shades, currently just 0 or 1
170      #
171      if self._shades == 0 :
172        gl.glShadeModel(gl.GL_SMOOTH)
173      else :
174        gl.glShadeModel(gl.GL_FLAT)
175      #
176      ####################################
177      #
178      # lit material colors and settings
179      #
180      gl.glMaterialfv(gl.GL_FRONT, gl.GL_AMBIENT,   self._ambient._rgba)
181      gl.glMaterialfv(gl.GL_FRONT, gl.GL_DIFFUSE,   self._diffuse._rgba)
182      gl.glMaterialfv(gl.GL_FRONT, gl.GL_SPECULAR,  self._specular._rgba)
183      gl.glMaterialfv(gl.GL_FRONT, gl.GL_EMISSION,  self._emissive._rgba)
184      gl.glMaterialf (gl.GL_FRONT, gl.GL_SHININESS, self._shininess)   
185      #
186      ####################################
187      #
188      # render the colormap
189      #
190      if self._colormap is not None :
191        gl.glActiveTexture(_texunits[_unit])
192        gl.glEnableClientState(gl.GL_TEXTURE_COORD_ARRAY)
193        gl.glTexCoordPointer(3,  gl.GL_FLOAT, 48, _texcoords)
194        gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_MODULATE)
195        self._colormap._enable()
196        _unit += 1
197      #
198      ####################################
199      #
200      # render the glowmap
201      #
202      if self._glowmap is not None :
203        gl.glActiveTexture(_texunits[_unit])
204        gl.glEnableClientState(gl.GL_TEXTURE_COORD_ARRAY)
205        gl.glTexCoordPointer(3,  gl.GL_FLOAT, 48, _texcoords)
206        gl.glTexEnvi(gl.GL_TEXTURE_ENV, gl.GL_TEXTURE_ENV_MODE, gl.GL_ADD)
207        gl.glEnable(gl.GL_BLEND)
208        gl.glBlendFunc(gl.GL_ONE, gl.GL_ONE)
209        self._glowmap._enable()
210        _unit += 1
211      #
212      ####################################
213      #
214      # disable what we're not using and return
215      #
216      #
217      for _i from _unit <= _i < 4 :
218        gl.glActiveTexture(_texunits[_i])
219        gl.glDisableClientState(gl.GL_TEXTURE_COORD_ARRAY)
220      return 1
221    #
222    ######################################
223    #
224    # disable textures from last pass
225    #
226    else :
227      _unit = 0
228      if self._colormap is not None :
229        gl.glActiveTexture(_texunits[_unit])
230        self._colormap._disable()
231        _unit += 1
232      if self._glowmap is not None :
233        gl.glActiveTexture(_texunits[_unit])
234        self._glowmap._disable()
235      return 0
236    #
237    ######################################
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