I blue myself

Signed-off-by: Slendi <slendi@socopon.com>

src/Util.cpp

@@ -0,0 +1,40 @@
+#include "Util.h"
+
+namespace vkutil {
+
+void transition_image(VkCommandBuffer cmd, VkImage image,
+    VkImageLayout current_layout, VkImageLayout new_layout)
+{
+	VkImageAspectFlags aspect_mask
+	    = (new_layout == VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_OPTIMAL)
+	    ? VK_IMAGE_ASPECT_DEPTH_BIT
+	    : VK_IMAGE_ASPECT_COLOR_BIT;
+
+	VkImageMemoryBarrier image_barrier {
+		.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+		.pNext = nullptr,
+
+		.srcAccessMask = VK_ACCESS_MEMORY_WRITE_BIT,
+		.dstAccessMask
+		= VK_ACCESS_MEMORY_WRITE_BIT | VK_ACCESS_MEMORY_READ_BIT,
+		.oldLayout = current_layout,
+		.newLayout = new_layout,
+		.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+		.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+		.image = image,
+		.subresourceRange = {
+			.aspectMask = aspect_mask,
+			.baseMipLevel = 0,
+			.levelCount = 1,
+			.baseArrayLayer = 0,
+			.layerCount = 1,
+		},
+	};
+
+	vkCmdPipelineBarrier(cmd,
+	    VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
+	    VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, nullptr, 0, nullptr, 1,
+	    &image_barrier);
+}
+
+} // namespace vkutil