gallium: added cso_delete_vertex_fragment_shader() functions

The state tracker now uses these functions to free shaders, rather than
the pipe->delete_vs/fs-state() functions.  Before, we could get in a situation
where we free() a shader and happen to alloc() a new one at the same address.
The cso_set_vertex/fragment_shader() function would no-op the state change
since the pointers were the same.  This led to problems elsewhere, of course.

The new delete functions null-out the CSO's current shader pointers.

0 files changed, 0 insertions, 0 deletions