zink: remove xfb_barrier flag

this was an attempt to minimize the number of xfb barriers being emitted,
but really xfb barriers need to always be emitted in order for xfb to work

cc: mesa-stable

fixes (nv):
KHR-GL46.texture_view.reference_counting
KHR-GL46.transform_feedback_overflow_query_ARB.multiple-streams-multiple-buffers-per-stream
KHR-GL46.transform_feedback_overflow_query_ARB.multiple-streams-one-buffer-per-stream

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16065>
(cherry picked from commit e509598470c000498c3e1328e012142d9047e292)

Conflicts:
	src/gallium/drivers/zink/ci/zink-nv-fails.txt

5 files changed, 3 insertions, 18 deletions

diff --git a/.pick_status.json b/.pick_status.json
index f3e99aff20d..6204dfa2765 100644
--- a/.pick_status.json
+++ b/.pick_status.json
@@ -4,7 +4,7 @@
         "description": "zink: remove xfb_barrier flag",
         "nominated": true,
         "nomination_type": 0,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null
     },
diff --git a/src/gallium/drivers/zink/ci/zink-nv-fails.txt b/src/gallium/drivers/zink/ci/zink-nv-fails.txt
index 8893e4bc8c0..e02b1bd964e 100644
--- a/src/gallium/drivers/zink/ci/zink-nv-fails.txt
+++ b/src/gallium/drivers/zink/ci/zink-nv-fails.txt
@@ -143,7 +143,6 @@ KHR-GL46.tessellation_shader.tessellation_shader_triangles_tessellation.inner_te
 KHR-GL46.tessellation_shader.vertex.vertex_ordering,Fail
 KHR-GL46.tessellation_shader.vertex.vertex_spacing,Fail
 KHR-GL46.texture_swizzle.smoke,Timeout
-KHR-GL46.texture_view.reference_counting,Fail
 KHR-GL46.texture_view.view_classes,Fail
 KHR-GL46.texture_view.view_sampling,Fail
 KHR-GL46.transform_feedback.capture_geometry_interleaved_test,Fail
@@ -157,8 +156,6 @@ KHR-GL46.transform_feedback_overflow_query_ARB.advanced-single-stream-interleave
 KHR-GL46.transform_feedback_overflow_query_ARB.advanced-single-stream-separate-attribs,Fail
 KHR-GL46.transform_feedback_overflow_query_ARB.basic-single-stream-interleaved-attribs,Fail
 KHR-GL46.transform_feedback_overflow_query_ARB.basic-single-stream-separate-attribs,Fail
-KHR-GL46.transform_feedback_overflow_query_ARB.multiple-streams-multiple-buffers-per-stream,Fail
-KHR-GL46.transform_feedback_overflow_query_ARB.multiple-streams-one-buffer-per-stream,Fail
 
 dEQP-GLES31.functional.blend_equation_advanced.barrier.colorburn,Fail
 dEQP-GLES31.functional.blend_equation_advanced.barrier.colordodge,Fail
diff --git a/src/gallium/drivers/zink/zink_context.c b/src/gallium/drivers/zink/zink_context.c
index 79d2ded9645..2eb93722823 100644
--- a/src/gallium/drivers/zink/zink_context.c
+++ b/src/gallium/drivers/zink/zink_context.c
@@ -3891,17 +3891,8 @@ zink_set_stream_output_targets(struct pipe_context *pctx,
          pipe_so_target_reference(&ctx->so_targets[i], targets[i]);
          if (!t)
             continue;
-         struct zink_resource *res = zink_resource(t->counter_buffer);
-         if (offsets[0] == (unsigned)-1) {
-            ctx->xfb_barrier |= zink_resource_buffer_needs_barrier(res,
-                                                                   VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_READ_BIT_EXT,
-                                                                   VK_PIPELINE_STAGE_DRAW_INDIRECT_BIT);
-         } else {
-            ctx->xfb_barrier |= zink_resource_buffer_needs_barrier(res,
-                                                                   VK_ACCESS_TRANSFORM_FEEDBACK_COUNTER_WRITE_BIT_EXT,
-                                                                   VK_PIPELINE_STAGE_TRANSFORM_FEEDBACK_BIT_EXT);
+         if (offsets[0] != (unsigned)-1)
             t->counter_buffer_valid = false;
-         }
          struct zink_resource *so = zink_resource(ctx->so_targets[i]->buffer);
          if (so) {
             so->so_bind_count++;
diff --git a/src/gallium/drivers/zink/zink_context.h b/src/gallium/drivers/zink/zink_context.h
index 18b6f688354..7965f3ef389 100644
--- a/src/gallium/drivers/zink/zink_context.h
+++ b/src/gallium/drivers/zink/zink_context.h
@@ -363,7 +363,6 @@ struct zink_context {
    uint32_t num_so_targets;
    struct pipe_stream_output_target *so_targets[PIPE_MAX_SO_OUTPUTS];
    bool dirty_so_targets;
-   bool xfb_barrier;
    bool first_frame_done;
    bool have_timelines;
 
diff --git a/src/gallium/drivers/zink/zink_draw.cpp b/src/gallium/drivers/zink/zink_draw.cpp
index 1144ee5c790..fc264b2f362 100644
--- a/src/gallium/drivers/zink/zink_draw.cpp
+++ b/src/gallium/drivers/zink/zink_draw.cpp
@@ -41,7 +41,6 @@ zink_emit_xfb_counter_barrier(struct zink_context *ctx)
       }
       zink_resource_buffer_barrier(ctx, res, access, stage);
    }
-   ctx->xfb_barrier = false;
 }
 
 static void
@@ -516,8 +515,7 @@ zink_draw(struct pipe_context *pctx,
 
    bool have_streamout = !!ctx->num_so_targets;
    if (have_streamout) {
-      if (ctx->xfb_barrier)
-         zink_emit_xfb_counter_barrier(ctx);
+      zink_emit_xfb_counter_barrier(ctx);
       if (ctx->dirty_so_targets) {
          /* have to loop here and below because barriers must be emitted out of renderpass,
           * but xfb buffers can't be bound before the renderpass is active to avoid