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0a1db7c4d8
This pulls in code from Mesa to improve our matrix manipulation support. It includes support for calculating the inverse of matrices based on top of a matrix categorizing system that allows optimizing certain matrix types. (the main thing we were after) but also adds some optimisations for rotations. Changes compared to the original code from Mesa: - Coding style is consistent with the rest of Cogl - Instead of allocating matrix->m and matrix->inv using malloc, our public CoglMatrix typedef is large enough to directly contain the matrix, its inverse, a type and a set of flags. - Instead of having a _math_matrix_analyse which updates the type, flags and inverse, we have _math_matrix_update_inverse which essentially does the same thing (internally making use of _math_matrix_update_type_and_flags()) but with additional guards in place to bail out when the inverse matrix is still valid. - When initializing a matrix with the identity matrix we don't immediately initialize the inverse matrix; rather we just set the dirty flag for the inverse (since it's likely the user won't request the inverse of the identity matrix) |
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| cogl | ||
| doc/reference/cogl | ||
| pango | ||
| Makefile.am | ||