977 			glCopyTexSubImage2D(0, 0, 0, 0, 0, 0, 0, 0);  in init()
989 			glCopyTexSubImage2D(GL_TEXTURE_2D, -1, 0, 0, 0, 0, 0, 0);  in init()
1003 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, -1, 0, 0, 0, 0, 0, 0);  in init()
1005 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, -1, 0, 0, 0, 0, 0, 0);  in init()
1007 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, -1, 0, 0, 0, 0, 0, 0);  in init()
1009 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, -1, 0, 0, 0, 0, 0, 0);  in init()
1011 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, -1, 0, 0, 0, 0, 0, 0);  in init()
1013 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, -1, 0, 0, 0, 0, 0, 0);  in init()
1028 			glCopyTexSubImage2D(GL_TEXTURE_2D, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1043 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1045 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1047 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1049 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1051 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1053 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, log2MaxTextureSize, 0, 0, 0, 0, 0, 0);  in init()
1067 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, -1, 0, 0, 0, 0, 0);  in init()
1069 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, -1, 0, 0, 0, 0);  in init()
1071 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, -1, -1, 0, 0, 0, 0);  in init()
1085 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 8, 4, 0, 0, 10, 10);  in init()
1087 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 4, 8, 0, 0, 10, 10);  in init()
1089 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 8, 8, 0, 0, 10, 10);  in init()
1103 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, -1, 0);  in init()
1105 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 0, -1);  in init()
1107 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, -1, -1);  in init()
1137 			glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, 0, 0);  in init()
1139 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X, 0, 0, 0, 0, 0, 0, 0);  in init()
1141 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Y, 0, 0, 0, 0, 0, 0, 0);  in init()
1143 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_Z, 0, 0, 0, 0, 0, 0, 0);  in init()
1145 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_X, 0, 0, 0, 0, 0, 0, 0);  in init()
1147 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, 0, 0, 0, 0, 0, 0, 0);  in init()
1149 			glCopyTexSubImage2D(GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, 0, 0, 0, 0, 0, 0, 0);  in init()