freedreno: clear vs scissor

The optimization of avoiding restore (mem2gmem) if there was a clear
falls down a bit if you don't have a fullscreen scissor.  We need to
make the decision logic a bit more clever to keep track of *what* was
cleared, so that we can (a) completely skip mem2gmem if entire buffer
was cleared, or (b) skip mem2gmem on a per-tile basis for tiles that
were completely cleared.

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

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_gmem.h b/src/gallium/drivers/freedreno/freedreno_gmem.h
index c7c687419b4..ff322df3c2f 100644
--- a/src/gallium/drivers/freedreno/freedreno_gmem.h
+++ b/src/gallium/drivers/freedreno/freedreno_gmem.h
@@ -55,6 +55,11 @@ struct fd_gmem_stateobj {
 	bool has_zs;  /* gmem config using depth/stencil? */
 };
 
-void fd_gmem_render_tiles(struct pipe_context *pctx);
+struct fd_context;
+
+void fd_gmem_render_tiles(struct fd_context *ctx);
+
+bool fd_gmem_needs_restore(struct fd_context *ctx, struct fd_tile *tile,
+		uint32_t buffers);
 
 #endif /* FREEDRENO_GMEM_H_ */