#### Morph Animation in Vertex Programs

You can implement morph animation in hardware by writing a vertex program which linearly blends between the first and second position keyframes passed as positions and the first free texture coordinate set, and by binding the animation_parametric value to a parameter (which tells you how far to interpolate between the two). However, you need to communicate this support to Ogre so it does not perform morph animation in software for you. You do this by adding the following attribute to your vertex_program definition:

    	includes_morph_animation true

When you do this, any skeletally animated entity which uses this material will forgo the usual software morph and will expect the vertex program to do it. Note that if your model includes both skeletal animation and morph animation, they must both be implemented in the vertex program if either is to be hardware acceleration. Note that ALL submeshes must be assigned a material which implements this, and that if you combine skeletal animation with vertex animation (See Animation) then all techniques must be hardware accelerated for any to be.