Cool project! AFAIK many games are using 3x4 bone matrices instead of 4x4. These matrices don't need projection component anyway i.e. 3x4 is enough. This save

Cool project! AFAIK many games are using 3x4 bone matrices instead of 4x4. These matrices don't need projection component anyway i.e. 3x4 is enough. This saves some bandwidth updating the constant buffer with them, also takes slightly less math instructions in the vertex shader.