radeonsi: early out of si_blit_decompress_depth_in_place based on dirty mask

Avoid dirtying the db_render_state atom when possible.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_blit.c b/src/gallium/drivers/radeonsi/si_blit.c
index 6db73f7cbb6266069676f7b74b6c99259d824ba7..5882f7dcb2aabb2a914e0239900e3174aa4aa8e4 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_blit.c
+++ b/src/gallium/drivers/radeonsi/si_blit.c
@@ -186,23 +186,31 @@ static void si_blit_decompress_depth_in_place(struct si_context *sctx,
                                               unsigned first_layer, unsigned last_layer)
 {
        struct pipe_surface *zsurf, surf_tmpl = {{0}};
-       unsigned layer, max_layer, checked_last_layer, level;
+       unsigned layer, max_layer, checked_last_layer;
        unsigned *dirty_level_mask;
+       unsigned level_mask =
+               u_bit_consecutive(first_level, last_level - first_level + 1);
 
        if (is_stencil_sampler) {
-               sctx->db_flush_stencil_inplace = true;
                dirty_level_mask = &texture->stencil_dirty_level_mask;
        } else {
-               sctx->db_flush_depth_inplace = true;
                dirty_level_mask = &texture->dirty_level_mask;
        }
+
+       level_mask &= *dirty_level_mask;
+       if (!level_mask)
+               return;
+
+       if (is_stencil_sampler)
+               sctx->db_flush_stencil_inplace = true;
+       else
+               sctx->db_flush_depth_inplace = true;
        si_mark_atom_dirty(sctx, &sctx->db_render_state);
 
        surf_tmpl.format = texture->resource.b.b.format;
 
-       for (level = first_level; level <= last_level; level++) {
-               if (!(*dirty_level_mask & (1 << level)))
-                       continue;
+       while (level_mask) {
+               unsigned level = u_bit_scan(&level_mask);
 
                surf_tmpl.u.tex.level = level;