Does anyone know where I can find the specification for GL_SGIX_polynomial_ffd? It’s not in the SGI extension registry, and the glext.h file looks wrong:
#ifndef GL_SGIX_polynomial_ffd
#define GL_GEOMETRY_DEFORMATION_SGIX 0x8194
#define GL_TEXTURE_DEFORMATION_SGIX 0x8195
#define GL_DEFORMATIONS_MASK_SGIX 0x8196
#define GL_MAX_DEFORMATION_ORDER_SGIX 0x8197
#endif#ifndef GL_FfdMaskSGIX
#define GL_TEXTURE_DEFORMATION_BIT_SGIX 0x00000001
#define GL_GEOMETRY_DEFORMATION_BIT_SGIX 0x00000002
#endif
GL_FfdMaskSGIX looks very odd. It’s my guess that those two should be part of the GL_SGIX_polynomial_ffd extensions (not that it matters from a programmers point of view, but for correctness).