commit f14ed14a1b89e7682247c97bebd8e03fd6598f29
author Bill Hollings <bill.hollings@brenwill.com> Tue May 07 11:48:26 2019 -0400
committer GitHub <noreply@github.com> Tue May 07 11:48:26 2019 -0400
tree 5442d1066380263b7a846d7ef3b8b3d8edb55f5f
parent cd57b2d81667751dae7c56077942e5dd286a65d4
parent a42e77b101ea09897bb74e16db827271bc0faa0d

Merge pull request #592 from cdavis5e/useless-host-barrier

MVKDevice: Don't unnecessarily iterate resources for global memory barriers.

MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm

diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 21edace..b87cb40 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -1930,6 +1930,8 @@
 								   VkMemoryBarrier* pMemoryBarrier,
                                    MVKCommandEncoder* cmdEncoder,
                                    MVKCommandUse cmdUse) {
+	if (!mvkIsAnyFlagEnabled(dstStageMask, VK_PIPELINE_STAGE_HOST_BIT) ||
+		!mvkIsAnyFlagEnabled(pMemoryBarrier->dstAccessMask, VK_ACCESS_HOST_READ_BIT) ) { return; }
 	lock_guard<mutex> lock(_rezLock);
     for (auto& rez : _resources) {
 		rez->applyMemoryBarrier(srcStageMask, dstStageMask, pMemoryBarrier, cmdEncoder, cmdUse);