zink: explicitly flag fb attachments as being written to in render passes

we need to ensure that we're accurately setting this hint in order to avoid
synchronization issues when determining whether we can read from the buffer

Reviewed-by: Erik Faye-Lun <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6924>

src/gallium/drivers/zink/zink_context.c

@@ -552,6 +552,8 @@ zink_begin_render_pass(struct zink_context *ctx, struct zink_batch *batch)
 
    zink_render_pass_reference(screen, &batch->rp, ctx->gfx_pipeline_state.render_pass);
    zink_framebuffer_reference(screen, &batch->fb, ctx->framebuffer);
+   for (struct zink_surface **surf = (struct zink_surface **)batch->fb->surfaces; *surf; surf++)
+      zink_batch_reference_resource_rw(batch, zink_resource((*surf)->base.texture), true);
 
    vkCmdBeginRenderPass(batch->cmdbuf, &rpbi, VK_SUBPASS_CONTENTS_INLINE);
 }