freedreno/a3xx: support for hw binning pass

The binning pass sorts vertices into which bins/tiles they apply to.
The visibility information generated during the binning pass can be
used to speed up the rendering pass by filtering out vertices which
do not apply to the current tile.  See:

 https://github.com/freedreno/freedreno/wiki/Adreno-tiling#optimized-approach

This brings a significant fps boost.  A rough assortment of tests
(supertuxkart, etracer, tremulous, glmark2 'build' test, etc) seems
to yield a ~35-45% fps improvement.

For now, to be conservative, the binning pass is not enabled yet by
default.  To enable it use:

  FD_MESA_DEBUG=binning

So far I haven't found anything that breaks with binning enabled,
but I'd like a bit more testing before I enable it as default.

Signed-off-by: Rob Clark <[email protected]>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_emit.h b/src/gallium/drivers/freedreno/a3xx/fd3_emit.h
index bf7787ab6f7..50559d10d22 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_emit.h
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_emit.h
@@ -58,7 +58,8 @@ struct fd3_vertex_buf {
 void fd3_emit_vertex_bufs(struct fd_ringbuffer *ring,
 		struct fd_program_stateobj *prog,
 		struct fd3_vertex_buf *vbufs, uint32_t n);
-void fd3_emit_state(struct fd_context *ctx, uint32_t dirty);
+void fd3_emit_state(struct fd_context *ctx, struct fd_ringbuffer *ring,
+		uint32_t dirty, bool binning);
 void fd3_emit_restore(struct fd_context *ctx);