[Mesa-dev] [PATCH 03/11] r600: implement basic memory barrier.

[Dave Airlie]

From: Dave Airlie <airlied at redhat.com>

This isn't 100% perfect (fglrx also fails a bunch of those tests)
but implement the start of a memory barrier for image support.

Signed-off-by: Dave Airlie <airlied at redhat.com>
---
 src/gallium/drivers/r600/r600_pipe_common.c  |  5 -----
 src/gallium/drivers/r600/r600_state_common.c | 24 ++++++++++++++++++++++++
 2 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_pipe_common.c b/src/gallium/drivers/r600/r600_pipe_common.c
index e2d0e32..23f7d74 100644
--- a/src/gallium/drivers/r600/r600_pipe_common.c
+++ b/src/gallium/drivers/r600/r600_pipe_common.c
@@ -321,10 +321,6 @@ void r600_need_dma_space(struct r600_common_context *ctx, unsigned num_dw,
 	ctx->num_dma_calls++;
 }
 
-static void r600_memory_barrier(struct pipe_context *ctx, unsigned flags)
-{
-}
-
 void r600_preflush_suspend_features(struct r600_common_context *ctx)
 {
 	/* suspend queries */
@@ -664,7 +660,6 @@ bool r600_common_context_init(struct r600_common_context *rctx,
 	rctx->b.transfer_flush_region = u_transfer_flush_region_vtbl;
 	rctx->b.transfer_unmap = u_transfer_unmap_vtbl;
 	rctx->b.texture_subdata = u_default_texture_subdata;
-	rctx->b.memory_barrier = r600_memory_barrier;
 	rctx->b.flush = r600_flush_from_st;
 	rctx->b.set_debug_callback = r600_set_debug_callback;
 	rctx->b.fence_server_sync = r600_fence_server_sync;
diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
index ead5b86..4ae18fc 100644
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -91,6 +91,29 @@ void r600_emit_alphatest_state(struct r600_context *rctx, struct r600_atom *atom
 	radeon_set_context_reg(cs, R_028438_SX_ALPHA_REF, alpha_ref);
 }
 
+static void r600_memory_barrier(struct pipe_context *ctx, unsigned flags)
+{
+	struct r600_context *rctx = (struct r600_context *)ctx;
+	if (flags & PIPE_BARRIER_CONSTANT_BUFFER)
+		rctx->b.flags |= R600_CONTEXT_INV_CONST_CACHE;
+
+	if (flags & (PIPE_BARRIER_VERTEX_BUFFER |
+		     PIPE_BARRIER_SHADER_BUFFER |
+		     PIPE_BARRIER_TEXTURE |
+		     PIPE_BARRIER_IMAGE |
+		     PIPE_BARRIER_STREAMOUT_BUFFER |
+		     PIPE_BARRIER_GLOBAL_BUFFER)) {
+		rctx->b.flags |= R600_CONTEXT_INV_VERTEX_CACHE|
+			R600_CONTEXT_INV_TEX_CACHE;
+	}
+
+	if (flags & (PIPE_BARRIER_FRAMEBUFFER|
+		     PIPE_BARRIER_IMAGE))
+		rctx->b.flags |= R600_CONTEXT_FLUSH_AND_INV;
+
+	rctx->b.flags |= R600_CONTEXT_WAIT_3D_IDLE;
+}
+
 static void r600_texture_barrier(struct pipe_context *ctx, unsigned flags)
 {
 	struct r600_context *rctx = (struct r600_context *)ctx;
@@ -3014,6 +3037,7 @@ void r600_init_common_state_functions(struct r600_context *rctx)
 	rctx->b.b.set_vertex_buffers = r600_set_vertex_buffers;
 	rctx->b.b.set_sampler_views = r600_set_sampler_views;
 	rctx->b.b.sampler_view_destroy = r600_sampler_view_destroy;
+	rctx->b.b.memory_barrier = r600_memory_barrier;
 	rctx->b.b.texture_barrier = r600_texture_barrier;
 	rctx->b.b.set_stream_output_targets = r600_set_streamout_targets;
 	rctx->b.b.set_active_query_state = r600_set_active_query_state;
-- 
2.9.5