st/mesa: new st_DrawAtlasBitmaps() function for drawing bitmap text

This basically saves the current pipeline state, sets up state for
rendering, constructs a set of textured quads, renders, then restores
the previous pipeline state.

It shouldn't be hard to implement a similar function for non-gallium
drives.  With some code refactoring, the vertex definition code could
probably be shared.

Reviewed-by: Nicolai Hähnle <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_context.h b/src/mesa/state_tracker/st_context.h
index 93da0e5d1d1..1701c618ebf 100644
--- a/src/mesa/state_tracker/st_context.h
+++ b/src/mesa/state_tracker/st_context.h
@@ -205,6 +205,7 @@ struct st_context
    struct {
       struct pipe_rasterizer_state rasterizer;
       struct pipe_sampler_state sampler;
+      struct pipe_sampler_state atlas_sampler;
       enum pipe_format tex_format;
       void *vs;
       struct bitmap_cache *cache;