Mercurial > games > semicongine

diff semiconginev2/rendering/vulkan_wrappers.nim @ 1239:69489a678141
add: better syncing, better swapchain access, correct font offset, two font-rendering tests
author: sam <sam@basx.dev>
date: Mon, 22 Jul 2024 00:46:10 +0700
parents: 5dcb503ef0c0
--- a/semiconginev2/rendering/vulkan_wrappers.nim	Sun Jul 21 11:31:11 2024 +0700
+++ b/semiconginev2/rendering/vulkan_wrappers.nim	Mon Jul 22 00:46:10 2024 +0700
@@ -347,6 +347,22 @@
 
   WithSingleUseCommandBuffer(commandBuffer):
     when T is (VkBuffer, uint64):
+      # first make sure memory has been made available with a memory barrier
+      # we are just waiting for the vertex input stage, but I think that is fine for most buffer copies (for now at least)
+      let memoryBarrier = VkMemoryBarrier(sType: VK_STRUCTURE_TYPE_MEMORY_BARRIER)
+      vkCmdPipelineBarrier(
+        commandBuffer = commandBuffer,
+        srcStageMask = toBits [VK_PIPELINE_STAGE_VERTEX_INPUT_BIT],
+        dstStageMask = toBits [VK_PIPELINE_STAGE_TRANSFER_BIT],
+        dependencyFlags = VkDependencyFlags(0),
+        memoryBarrierCount = 1,
+        pMemoryBarriers = addr(memoryBarrier),
+        bufferMemoryBarrierCount = 0,
+        pBufferMemoryBarriers = nil,
+        imageMemoryBarrierCount = 0,
+        pImageMemoryBarriers = nil,
+      )
+      # now copy stuff
       let copyRegion = VkBufferCopy(
         size: bufferSize,
         dstOffset: target[1],