panvk: Skip BY_REGION barriers if we're in a render pass

If we are in a render pass, the intra-draw synchronization happens
through the FPK parameters, shader waits and draw dependencies, so we
can safely skip the barrier in that case.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32540>

src/panfrost/vulkan/csf/panvk_vX_cmd_buffer.c

@@ -539,6 +539,12 @@ panvk_per_arch(CmdPipelineBarrier2)(VkCommandBuffer commandBuffer,
    VK_FROM_HANDLE(panvk_cmd_buffer, cmdbuf, commandBuffer);
    struct panvk_cs_deps deps;
 
+   /* Intra render pass barriers can be skipped iff we're inside a render
+    * pass. */
+   if ((cmdbuf->state.gfx.render.tiler || inherits_render_ctx(cmdbuf)) &&
+       (pDependencyInfo->dependencyFlags & VK_DEPENDENCY_BY_REGION_BIT))
+      return;
+
    panvk_per_arch(get_cs_deps)(cmdbuf, pDependencyInfo, &deps);
 
    if (deps.needs_draw_flush)