61     return tex->col;  in standard_texture()
151     color col;  in grit_texture()  local
156     col.r = tex->col.r * fnum;  in grit_texture()
157     col.g = tex->col.g * fnum;  in grit_texture()
158     col.b = tex->col.b * fnum;  in grit_texture()
160     return col;  in grit_texture()
166     color col;  in checker_texture()  local
179         col.r = 1.0;  in checker_texture()
180         col.g = 0.2;  in checker_texture()
181         col.b = 0.0;  in checker_texture()
184         col.r = 0.0;  in checker_texture()
185         col.g = 0.2;  in checker_texture()
186         col.b = 1.0;  in checker_texture()
189     return col;  in checker_texture()
196     color col;  in cyl_checker_texture()  local
210         col.r = 1.0;  in cyl_checker_texture()
211         col.g = 0.2;  in cyl_checker_texture()
212         col.b = 0.0;  in cyl_checker_texture()
215         col.r = 0.0;  in cyl_checker_texture()
216         col.g = 0.2;  in cyl_checker_texture()
217         col.b = 1.0;  in cyl_checker_texture()
220     return col;  in cyl_checker_texture()
226     color col;  in wood_texture()  local
242         col.r = 0.8;  in wood_texture()
243         col.g = 1.0;  in wood_texture()
244         col.b = 0.2;  in wood_texture()
247         col.r = 0.0;  in wood_texture()
248         col.g = 0.0;  in wood_texture()
249         col.b = 0.0;  in wood_texture()
252     return col;  in wood_texture()
339     color col;  in marble_texture()  local
361     col.r = (1.0 + sin(i * 6.28)) / 2.0;  in marble_texture()
362     col.g = (1.0 + sin(i * 16.28)) / 2.0;  in marble_texture()
363     col.b = (1.0 + cos(i * 30.28)) / 2.0;  in marble_texture()
365     return col;  in marble_texture()
369     color col;  in gnoise_texture()  local
379     col.r = tex->col.r * f;  in gnoise_texture()
380     col.g = tex->col.g * f;  in gnoise_texture()
381     col.b = tex->col.b * f;  in gnoise_texture()
383     return col;  in gnoise_texture()