Fix first vkCmdPipelineBarrier in buildTlas's command buffer

Argument `srcStageMask` in `vkCmdPipelineBarrier` should be set to `VK_PIPELINE_STAGE_TRANSFER_BIT` in order to guarantee synchronization of `vkCmdCopyBuffer`. Signed-off-by: Kacper Zielinski <[email protected]>
nvpro-samples · Dec 13, 2024 · f9e419b · f9e419b
1 parent 72e176a
commit f9e419b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/nvvk/raytraceKHR_vk.hpp b/nvvk/raytraceKHR_vk.hpp
@@ -157,7 +157,7 @@ class RaytracingBuilderKHR
     VkMemoryBarrier barrier{VK_STRUCTURE_TYPE_MEMORY_BARRIER};
     barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
     barrier.dstAccessMask = VK_ACCESS_ACCELERATION_STRUCTURE_WRITE_BIT_KHR;
-    vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR,
+    vkCmdPipelineBarrier(cmd, VK_PIPELINE_STAGE_TRANSFER_BIT,
                          VK_PIPELINE_STAGE_ACCELERATION_STRUCTURE_BUILD_BIT_KHR, 0, 1, &barrier, 0, nullptr, 0, nullptr);
 
     // Creating the TLAS