st/mesa: add PBO download enable bit and fragment shaders

For downloads, the fragment shader must know the source texture target, hence
we may cache multiple fragment shaders.

v2: break long line (Marek)

Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h
index 39ea501d93d..a4f56eac7f8 100644
--- a/src/mesa/state_tracker/st_context.h
+++ b/src/mesa/state_tracker/st_context.h
@@ -240,7 +240,9 @@ struct st_context
       void *vs;
       void *gs;
       void *upload_fs;
+      void *download_fs[PIPE_MAX_TEXTURE_TYPES];
       bool upload_enabled;
+      bool download_enabled;
       bool rgba_only;
       bool layers;
       bool use_gs;