// Record a buffer copy operation into the command buffer
public void RecordBufferCopy(VkCommandBuffer cmd, ResourceType?dstBufferType, ulong dataSize,
VkBuffer srcBuffer, ulong srcOffset,
VkBuffer dstBuffer, ulong dstOffset)
{
// Get pipeline barrier values
VkPipelineStageFlags srcStage = 0, dstStage = 0;
VkAccessFlags srcAccess = 0, dstAccess = 0;
if (dstBufferType.HasValue)
{
GetBarrierStages(dstBufferType.Value, out srcStage, out dstStage);
GetAccessFlags(dstBufferType.Value, out srcAccess, out dstAccess);
}
// Start command
VkCommandBufferBeginInfo cbbi = new(VkCommandBufferUsageFlags.OneTimeSubmit, null);
cmd.BeginCommandBuffer(&cbbi);
// Src barrier
if (dstBufferType.HasValue)
{
VkBufferMemoryBarrier srcBarrier = new(
srcAccessMask : srcAccess,
dstAccessMask : VkAccessFlags.TransferWrite,
srcQueueFamilyIndex : VkConstants.QUEUE_FAMILY_IGNORED,
dstQueueFamilyIndex : VkConstants.QUEUE_FAMILY_IGNORED,
buffer : dstBuffer,
offset : dstOffset,
size : dataSize
);
cmd.CmdPipelineBarrier(
srcStage,
VkPipelineStageFlags.Transfer,
VkDependencyFlags.ByRegion,
0, null,
1, &srcBarrier,
0, null
);
}
// Create copy command
VkBufferCopy bc = new(srcOffset, dstOffset, dataSize);
cmd.CmdCopyBuffer(srcBuffer, dstBuffer, 1, &bc);
// Last barrier
if (dstBufferType.HasValue)
{
VkBufferMemoryBarrier dstBarrier = new(
srcAccessMask : VkAccessFlags.TransferWrite,
dstAccessMask : dstAccess,
srcQueueFamilyIndex : VkConstants.QUEUE_FAMILY_IGNORED,
dstQueueFamilyIndex : VkConstants.QUEUE_FAMILY_IGNORED,
buffer : dstBuffer,
offset : dstOffset,
size : dataSize
);
cmd.CmdPipelineBarrier(
VkPipelineStageFlags.Transfer,
dstStage,
VkDependencyFlags.ByRegion,
0, null,
1, &dstBarrier,
0, null
);
}
// End
cmd.EndCommandBuffer().Throw("Failed to record buffer upload commands");
}