From: Christian Gmeiner <christian.gmeiner@gmail.com>
Date: Fri, 13 Sep 2019 06:24:33 +0000 (+0200)
Subject: freedreno: ssbo: keep track if a buffer gets written
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=061b262a0c2482e10286c4ecc96a81b47546100a;p=mesa.git

freedreno: ssbo: keep track if a buffer gets written

Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/1963>
---

diff --git a/src/gallium/drivers/freedreno/freedreno_context.h b/src/gallium/drivers/freedreno/freedreno_context.h
index f92790c0ecf..30deddd21b3 100644
--- a/src/gallium/drivers/freedreno/freedreno_context.h
+++ b/src/gallium/drivers/freedreno/freedreno_context.h
@@ -66,6 +66,7 @@ struct fd_constbuf_stateobj {
 struct fd_shaderbuf_stateobj {
 	struct pipe_shader_buffer sb[PIPE_MAX_SHADER_BUFFERS];
 	uint32_t enabled_mask;
+	uint32_t writable_mask;
 };
 
 struct fd_shaderimg_stateobj {
diff --git a/src/gallium/drivers/freedreno/freedreno_state.c b/src/gallium/drivers/freedreno/freedreno_state.c
index dd42ef4c6e9..a748bfec82c 100644
--- a/src/gallium/drivers/freedreno/freedreno_state.c
+++ b/src/gallium/drivers/freedreno/freedreno_state.c
@@ -129,6 +129,8 @@ fd_set_shader_buffers(struct pipe_context *pctx,
 	const unsigned modified_bits = u_bit_consecutive(start, count);
 
 	so->enabled_mask &= ~modified_bits;
+	so->writable_mask &= ~modified_bits;
+	so->writable_mask |= writable_bitmask << start;
 
 	for (unsigned i = 0; i < count; i++) {
 		unsigned n = i + start;