Mesa (main): v3dv: ignore no-op barriers

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Module: Mesa
Branch: main
Commit: c367bd0ee3e0eff52a01591d39c93b3c55cb9624
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c367bd0ee3e0eff52a01591d39c93b3c55cb9624

Author: Iago Toral Quiroga <itoral at igalia.com>
Date:   Wed Apr 13 10:40:54 2022 +0200

v3dv: ignore no-op barriers

Reviewed-by: Alejandro Piñeiro <apinheiro at igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16235>

---

 src/broadcom/vulkan/v3dv_cmd_buffer.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/broadcom/vulkan/v3dv_cmd_buffer.c b/src/broadcom/vulkan/v3dv_cmd_buffer.c
index e60adf1af3b..ea4e9a5e820 100644
--- a/src/broadcom/vulkan/v3dv_cmd_buffer.c
+++ b/src/broadcom/vulkan/v3dv_cmd_buffer.c
@@ -2650,6 +2650,9 @@ v3dv_CmdPipelineBarrier(VkCommandBuffer commandBuffer,
 {
    V3DV_FROM_HANDLE(v3dv_cmd_buffer, cmd_buffer, commandBuffer);
 
+   if (memoryBarrierCount + bufferBarrierCount + imageBarrierCount == 0)
+      return;
+
    /* We only care about barriers between GPU jobs */
    if (srcStageMask == VK_PIPELINE_STAGE_HOST_BIT ||
        dstStageMask == VK_PIPELINE_STAGE_HOST_BIT) {