vo_opengl: slightly refactor user_shaders code

- Each struct tex_hook now stores multiple hooks, this allows us to
  avoid the awkward way of the current code has to add the same pass
  multiple times.

- As a consequence, SHADER_MAX_HOOKS was split up into SHADER_MAX_PASSES
  (number of tex_hooks) and SHADER_MAX_HOOKS (number of hooked textures
  per tex_hook), and both numbers decreased correspondingly.

- Instead of having a weird free() callback, we can just leverage
  talloc's recursive free behavior. The only user is the user shaders code
  anyway.

0 files changed, 0 insertions, 0 deletions