update parallel rdp

parallel-rdp-standalone/vulkan/command_pool.cpp

@@ -31,7 +31,8 @@ CommandPool::CommandPool(Device *device_, uint32_t queue_family_index)
 	VkCommandPoolCreateInfo info = { VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO };
 	info.flags = VK_COMMAND_POOL_CREATE_TRANSIENT_BIT;
 	info.queueFamilyIndex = queue_family_index;
-	table->vkCreateCommandPool(device->get_device(), &info, nullptr, &pool);
+	if (queue_family_index != VK_QUEUE_FAMILY_IGNORED)
+		table->vkCreateCommandPool(device->get_device(), &info, nullptr, &pool);
 }
 
 CommandPool::CommandPool(CommandPool &&other) noexcept
@@ -86,6 +87,8 @@ void CommandPool::signal_submitted(VkCommandBuffer cmd)
 
 VkCommandBuffer CommandPool::request_secondary_command_buffer()
 {
+	VK_ASSERT(pool != VK_NULL_HANDLE);
+
 	if (secondary_index < secondary_buffers.size())
 	{
 		auto ret = secondary_buffers[secondary_index++];
@@ -116,6 +119,8 @@ VkCommandBuffer CommandPool::request_secondary_command_buffer()
 
 VkCommandBuffer CommandPool::request_command_buffer()
 {
+	VK_ASSERT(pool != VK_NULL_HANDLE);
+
 	if (index < buffers.size())
 	{
 		auto ret = buffers[index++];
@@ -146,6 +151,9 @@ VkCommandBuffer CommandPool::request_command_buffer()
 
 void CommandPool::begin()
 {
+	if (pool == VK_NULL_HANDLE)
+		return;
+
 #ifdef VULKAN_DEBUG
 	VK_ASSERT(in_flight.empty());
 #endif
@@ -157,6 +165,9 @@ void CommandPool::begin()
 
 void CommandPool::trim()
 {
+	if (pool == VK_NULL_HANDLE)
+		return;
+
 	table->vkResetCommandPool(device->get_device(), pool, VK_COMMAND_POOL_RESET_RELEASE_RESOURCES_BIT);
 	if (!buffers.empty())
 		table->vkFreeCommandBuffers(device->get_device(), pool, buffers.size(), buffers.data());