zink: add flag to restrict unsynchronized texture access

this is unset any time a texture is accessed and must be explicitly
re-set to preserve unsynchronized access

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25624>

src/gallium/drivers/zink/zink_batch.c

@@ -36,6 +36,7 @@ reset_obj(struct zink_screen *screen, struct zink_batch_state *bs, struct zink_r
       obj->access_stage = 0;
       obj->unordered_access_stage = 0;
       obj->copies_need_reset = true;
+      obj->unsync_access = true;
       /* also prune dead view objects */
       simple_mtx_lock(&obj->view_lock);
       if (obj->is_buffer) {

src/gallium/drivers/zink/zink_context.c

@@ -4535,6 +4535,7 @@ zink_copy_image_buffer(struct zink_context *ctx, struct zink_resource *dst, stru
    zink_batch_reference_resource_rw(batch, buf, !buf2img);
    if (unsync) {
       ctx->batch.state->has_unsync = true;
+      img->obj->unsync_access = true;
    }
 
    /* we're using u_transfer_helper_deinterleave, which means we'll be getting PIPE_MAP_* usage

src/gallium/drivers/zink/zink_resource.c

@@ -779,6 +779,7 @@ resource_object_create(struct zink_screen *screen, const struct pipe_resource *t
    u_rwlock_init(&obj->copy_lock);
    obj->unordered_read = true;
    obj->unordered_write = true;
+   obj->unsync_access = true;
    obj->last_dt_idx = obj->dt_idx = UINT32_MAX; //TODO: unionize
 
    VkMemoryRequirements reqs = {0};

src/gallium/drivers/zink/zink_resource.h

@@ -163,6 +163,7 @@ static inline void
 zink_resource_usage_set(struct zink_resource *res, struct zink_batch_state *bs, bool write)
 {
    zink_bo_usage_set(res->obj->bo, bs, write);
+   res->obj->unsync_access = false;
 }
 
 static inline bool

src/gallium/drivers/zink/zink_types.h

@@ -1233,6 +1233,7 @@ struct zink_resource_object {
    bool ordered_access_is_copied;
    bool unordered_read;
    bool unordered_write;
+   bool unsync_access;
    bool copies_valid;
    bool copies_need_reset; //for use with batch state resets