st/mesa: specify source mipmap level in decompress_with_blit()

This, along with the previous patch, fixes glGetTexImage() of compressed
textures for level > 0.

diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 68323a3..97c1fab 100644 (file)
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -849,6 +849,9 @@ decompress_with_blit(struct gl_context * ctx, GLenum target, GLint level,
       pipe->render_condition(pipe, NULL, 0);
    }
 
+   /* Choose the source mipmap level */
+   src_view->u.tex.first_level = src_view->u.tex.last_level = level;
+
    /* blit/render/decompress */
    util_blit_pixels_tex(st->blit,
                         src_view,      /* pipe_resource (src) */