gallium/u_gen_mipmap: rewrite using pipe->blit (v2)

This replaces u_gen_mipmap with an extremely simple implementation based
on pipe->blit. st/mesa is also cleaned up.

Pros:
- less code
- correct mipmap generation for NPOT 3D textures (u_blitter uses a better
  formula)
- queries are not affected by mipmap generation if drivers disable them

v2: add "first_layer", "last_layer" parameters, drop "face"
v2.1: add format
v2.2: document the format parameter

1 files changed, 0 insertions, 2 deletions

diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index 807a86f..c7f3ec6 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -152,7 +152,6 @@ st_create_context_priv( struct gl_context *ctx, struct pipe_context *pipe,
    st_init_bitmap(st);
    st_init_clear(st);
    st_init_draw( st );
-   st_init_generate_mipmap(st);
 
    /* Choose texture target for glDrawPixels, glBitmap, renderbuffers */
    if (pipe->screen->get_param(pipe->screen, PIPE_CAP_NPOT_TEXTURES))
@@ -254,7 +253,6 @@ static void st_destroy_context_priv( struct st_context *st )
 
    st_destroy_atoms( st );
    st_destroy_draw( st );
-   st_destroy_generate_mipmap(st);
    st_destroy_clear(st);
    st_destroy_bitmap(st);
    st_destroy_drawpix(st);