path: root/src/font.cpp

#include "font.hpp"
#include "asset-manager.hpp"
#include "pk.h"
#include "window.hpp"
#include "static-plane.hpp"
#include "vendor-stb-image-include.h"
// #include "bucketed-array.hpp"

// TODO threading

TypeSafeInt_B(FontTypeIndex);
TypeSafeInt_B(FontRenderIndex);

struct FontTypeData {
	FontType *arr_ft;
	FontTypeIndex n_ft{0};
	FontTypeIndex h_ft{0};
} ftd;

// BucketContainer<FontType, TextRenderHandle, 2> bktFont;

void FontType_Init() {
	ftd.h_ft = FontTypeIndex{5};
	ftd.arr_ft = pk_new<FontType>(5);
}

void FontType_Teardown() {
	FontTypeIndex i;
	FontType *ft;
	for (i = FontTypeIndex{0}; i < ftd.h_ft; ++i) {
		FontType_Unload(i);
		ft = &ftd.arr_ft[(FontTypeIndex_T)i];
		pk_delete<FontRender>(ft->renders, (FontTypeIndex_T)ft->n_render);
	}
	pk_delete(ftd.arr_ft, (FontTypeIndex_T)ftd.n_ft);
}

FontType* FontType_GetFonts(FontTypeIndex &count)
{
	count = ftd.h_ft;
	return ftd.arr_ft;
}

FontTypeIndex FontType_RegisterFont(pk_cstr title, AssetHandle fontTextureHandle, AssetHandle glyphsHandle) {
	VkResult vkResult;
	pk_arr arr_vert_mem_reqs;
	memset(&arr_vert_mem_reqs, 0, sizeof(pk_arr));
	arr_vert_mem_reqs.alignment = alignof(VkMemoryRequirements);
	arr_vert_mem_reqs.stride = sizeof(VkMemoryRequirements);
	pk_arr arr_inst_mem_reqs(arr_vert_mem_reqs);
	pk_arr arr_texture_mem_reqs(arr_vert_mem_reqs);
	VkDeviceSize index;
	constexpr VkDeviceSize expectedBufferCount = 3;
	constexpr VkDeviceSize startingGlyphCount = 4;

	VkMemoryRequirements combined_vert_mem_reqs;
	VkMemoryRequirements combined_inst_mem_reqs;
	VkMemoryRequirements combined_texture_mem_reqs;

	const Asset *fontTexture = AM_Get(fontTextureHandle);
	const Asset *glyphs = AM_Get(glyphsHandle);
	if (ftd.h_ft > ftd.n_ft) {
		index = (VkDeviceSize)ftd.n_ft;
		ftd.n_ft += FontTypeIndex{5};
		FontType *arr = pk_new<FontType>((FontTypeIndex_T)ftd.n_ft);
		memcpy(arr, ftd.arr_ft, sizeof(FontType) * index);
		pk_delete<FontType>(ftd.arr_ft, index);
		ftd.arr_ft = arr;
	}

	FontTypeIndex idx = ftd.h_ft++;
	FontTypeIndex_T idx_t = (FontTypeIndex_T)idx;
	FontType *ft = &ftd.arr_ft[idx_t];
	ft->title = title;
	ft->fontTextureAssetKey = fontTextureHandle;
	ft->glyphDetailsAssetKey = glyphsHandle;
	ft->renders = pk_new<FontRender>(startingGlyphCount);
	ft->n_render = FontRenderIndex{startingGlyphCount};

	int txtr_x, txtr_y, txtr_chan;
	stbi_uc *txtr_bytes = stbi_load_from_memory((unsigned char*)fontTexture->ptr, fontTexture->size, &txtr_x, &txtr_y, &txtr_chan, 4);
	assert(txtr_chan == 4);

	/*
	 * vulkan setup
	 */
	VkBuffer buffer;
	VkBufferCreateInfo bufferCI;
	bufferCI.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	bufferCI.pNext = nullptr;
	bufferCI.flags = {};
	bufferCI.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	bufferCI.queueFamilyIndexCount = 1;
	bufferCI.pQueueFamilyIndices = &graphicsFamilyIndex;

	/*
	 * Vulkan resource setup
	 */
	// vertex
	{
		for (uint64_t index = 0; index < expectedBufferCount; ++index) {
			if (index == 0) {
				bufferCI.size = sizeof(glm::vec2) * 4;
			} else if (index == 1) {
				bufferCI.size = sizeof(glm::vec2) * 4;
			} else if (index == 2) {
				bufferCI.size = sizeof(uint16_t) * 6;
			}
			if (index == 2) {
				bufferCI.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
			} else {
				bufferCI.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
			}
			vkCreateBuffer(vkDevice, &bufferCI, vkAllocator, &buffer);
			VkMemoryRequirements tmp;
			vkGetBufferMemoryRequirements(vkDevice, buffer, &tmp);
			pk_arr_append(&arr_vert_mem_reqs, &tmp);
			vkDestroyBuffer(vkDevice, buffer, vkAllocator);
		}
	}
	// instance
	{
		bufferCI.size = 0;
		bufferCI.size += sizeof(glm::vec4); // fgColor
		bufferCI.size += sizeof(glm::vec4); // bgColor
		bufferCI.size += sizeof(glm::vec4); // sprite_region
		bufferCI.size += sizeof(float);     // width
		bufferCI.size *= startingGlyphCount;
		bufferCI.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
		vkCreateBuffer(vkDevice, &bufferCI, vkAllocator, &buffer);
		VkMemoryRequirements tmp;
		vkGetBufferMemoryRequirements(vkDevice, buffer, &tmp);
		pk_arr_append(&arr_inst_mem_reqs, &tmp);
		vkDestroyBuffer(vkDevice, buffer, vkAllocator);
	}
	// texture
	VkImageCreateInfo imageCreateInfo{};
	VkImageSubresourceRange vkImageSubresourceRange;
	{
		imageCreateInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
		imageCreateInfo.pNext = nullptr;
		imageCreateInfo.flags = 0;
		imageCreateInfo.imageType = VK_IMAGE_TYPE_2D;
		imageCreateInfo.format = VK_FORMAT_R8G8B8A8_SRGB;
		imageCreateInfo.extent.width = txtr_x;
		imageCreateInfo.extent.height = txtr_y;
		imageCreateInfo.extent.depth = 1;
		imageCreateInfo.mipLevels = 1;
		imageCreateInfo.arrayLayers = 1;
		imageCreateInfo.samples = renderSampleCount;
		imageCreateInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
		imageCreateInfo.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
		imageCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
		imageCreateInfo.queueFamilyIndexCount = 0;
		imageCreateInfo.pQueueFamilyIndices = nullptr;
		imageCreateInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;

		vkImageSubresourceRange.aspectMask = VkImageAspectFlagBits::VK_IMAGE_ASPECT_COLOR_BIT;
		vkImageSubresourceRange.baseMipLevel = 0u;
		vkImageSubresourceRange.levelCount = 1u;
		vkImageSubresourceRange.baseArrayLayer = 0u;
		vkImageSubresourceRange.layerCount = 1u;

		VkImageViewCreateInfo vkImageViewCreateInfo;
		vkImageViewCreateInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
		vkImageViewCreateInfo.pNext = nullptr;
		vkImageViewCreateInfo.flags = 0;
		vkImageViewCreateInfo.image = ft->textureImage;
		vkImageViewCreateInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
		vkImageViewCreateInfo.format = imageCreateInfo.format;
		vkImageViewCreateInfo.components = VkComponentMapping {
			.r = VK_COMPONENT_SWIZZLE_IDENTITY,
			.g = VK_COMPONENT_SWIZZLE_IDENTITY,
			.b = VK_COMPONENT_SWIZZLE_IDENTITY,
			.a = VK_COMPONENT_SWIZZLE_IDENTITY,
		};
		vkImageViewCreateInfo.subresourceRange = vkImageSubresourceRange;

		VkImage tmpImage;
		vkResult = vkCreateImage(vkDevice, &imageCreateInfo, vkAllocator, &tmpImage);
		assert(vkResult == VK_SUCCESS);

		VkMemoryRequirements imageMemoryRequirements;
		vkGetImageMemoryRequirements(vkDevice, tmpImage, &imageMemoryRequirements);

		VkDeviceSize paddedImageSize = imageMemoryRequirements.size + (imageMemoryRequirements.alignment - (imageMemoryRequirements.size % imageMemoryRequirements.alignment));
		assert(paddedImageSize % imageMemoryRequirements.alignment == 0);

		vkDestroyImage(vkDevice, tmpImage, vkAllocator);

		VkMemoryAllocateInfo vkMemoryAllocateInfo{};
		vkMemoryAllocateInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
		vkMemoryAllocateInfo.pNext = nullptr;
		vkMemoryAllocateInfo.allocationSize = paddedImageSize * MAX_FRAMES_IN_FLIGHT;
		vkMemoryAllocateInfo.memoryTypeIndex = FindMemoryTypeIndex(imageMemoryRequirements.memoryTypeBits,
				VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);

		vkResult = vkAllocateMemory(vkDevice, &vkMemoryAllocateInfo, vkAllocator, &ft->deviceMemoryTexture);
		assert(vkResult == VK_SUCCESS);

		vkResult = vkCreateImage(vkDevice, &imageCreateInfo, vkAllocator, &ft->textureImage);
		assert(vkResult == VK_SUCCESS);
		vkResult = vkBindImageMemory(vkDevice, ft->textureImage, ft->deviceMemoryTexture, 0);
		assert(vkResult == VK_SUCCESS);

		vkImageViewCreateInfo.image = ft->textureImage;
		vkResult = vkCreateImageView(vkDevice, &vkImageViewCreateInfo, vkAllocator, &ft->textureImageView);
		assert(vkResult == VK_SUCCESS);
	}

	/*
	 * Vulkan memory allocation
	 */

	VkMemoryAllocateInfo vkMemoryAllocateInfo;
	vkMemoryAllocateInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	vkMemoryAllocateInfo.pNext = nullptr;

	// verts
	CalculateCombinedMemReqs(arr_vert_mem_reqs.next, (VkMemoryRequirements*)arr_vert_mem_reqs.data, combined_vert_mem_reqs);
	vkMemoryAllocateInfo.allocationSize = combined_vert_mem_reqs.size;
	vkMemoryAllocateInfo.memoryTypeIndex = FindMemoryTypeIndex(combined_vert_mem_reqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
	vkAllocateMemory(vkDevice, &vkMemoryAllocateInfo, vkAllocator, &ft->deviceMemoryVert);

	// inst
	CalculateCombinedMemReqs(arr_inst_mem_reqs.next, (VkMemoryRequirements*)arr_inst_mem_reqs.data, combined_inst_mem_reqs);
	vkMemoryAllocateInfo.allocationSize = combined_inst_mem_reqs.size;
	vkMemoryAllocateInfo.memoryTypeIndex = FindMemoryTypeIndex(combined_inst_mem_reqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
	vkAllocateMemory(vkDevice, &vkMemoryAllocateInfo, vkAllocator, &ft->deviceMemoryInst);

	// texture
	CalculateCombinedMemReqs(arr_texture_mem_reqs.next, (VkMemoryRequirements*)arr_texture_mem_reqs.data, combined_texture_mem_reqs);
	vkMemoryAllocateInfo.allocationSize = combined_texture_mem_reqs.size;
	vkMemoryAllocateInfo.memoryTypeIndex = FindMemoryTypeIndex(combined_texture_mem_reqs.memoryTypeBits, VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
	if (vkMemoryAllocateInfo.memoryTypeIndex == 0) {
		vkMemoryAllocateInfo.memoryTypeIndex = FindMemoryTypeIndex(combined_texture_mem_reqs.memoryTypeBits, 0);
	}
	vkAllocateMemory(vkDevice, &vkMemoryAllocateInfo, vkAllocator, &ft->deviceMemoryTexture);

	/*
	 * Vulkan data transfer
	 */
	VkBuffer transferBuffer;
	VkDeviceMemory transferMemory;
	void *deviceData;
	VkDeviceSize runningOffset, alignmentPadding;
	// vert
	BeginTransferBuffer(combined_vert_mem_reqs.size, transferBuffer, transferMemory, deviceData);
	{
		index = 0;
		runningOffset = 0;

		uint32_t offsetVert = runningOffset;
		uint32_t sizeVert = sizeof(pkeIntrinsicsPlane.vert[0]) * 4;
		ft->bindings.vertexBD.firstBinding = index;
		ft->bindings.vertexBD.bindingCount = 1;
		alignmentPadding = sizeVert % combined_vert_mem_reqs.alignment;
		alignmentPadding = alignmentPadding == 0 ? 0 : combined_vert_mem_reqs.alignment - alignmentPadding;
		sizeVert += alignmentPadding;
		bufferCI.size = sizeVert;
		bufferCI.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
		vkCreateBuffer(vkDevice, &bufferCI, vkAllocator, &ft->bindings.vertexBD.buffer);
		vkBindBufferMemory(vkDevice, ft->bindings.vertexBD.buffer, ft->deviceMemoryVert, offsetVert);
		runningOffset += sizeVert;
		index += 1;

		// uv
		uint32_t offsetUV = runningOffset;
		uint32_t sizeUV = sizeof(pkeIntrinsicsPlane.uv[0]) * 4;
		ft->bindings.uvBD.firstBinding = index;
		ft->bindings.uvBD.bindingCount = 1;
		alignmentPadding = sizeUV % combined_vert_mem_reqs.alignment;
		alignmentPadding = alignmentPadding == 0 ? 0 : combined_vert_mem_reqs.alignment - alignmentPadding;
		sizeUV += alignmentPadding;
		bufferCI.size = sizeUV;
		vkCreateBuffer(vkDevice, &bufferCI, vkAllocator, &ft->bindings.uvBD.buffer);
		vkBindBufferMemory(vkDevice, ft->bindings.uvBD.buffer, ft->deviceMemoryVert, offsetUV);
		runningOffset += sizeUV;
		index += 1;

		// 2023-09-27 - JCB
		// I don't know where else to put this
		ft->bindings.instanceBD.firstBinding = index;
		ft->bindings.instanceBD.bindingCount = 1;
		// no index += 1 because index just happens to be the right value here for
		//  the binding index, whereas binding the IndexBuffer doesn't need a binding index.

		// index
		uint32_t offsetIndex = runningOffset;
		uint32_t sizeIndex = sizeof(pkeIntrinsicsPlane.index[0]) * 6;
		ft->bindings.indexBD.bindingCount = 1;
		ft->bindings.indexCount = 6;
		alignmentPadding = sizeIndex % combined_vert_mem_reqs.alignment;
		alignmentPadding = alignmentPadding == 0 ? 0 : combined_vert_mem_reqs.alignment - alignmentPadding;
		sizeIndex += alignmentPadding;
		bufferCI.size = sizeIndex;
		bufferCI.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
		vkCreateBuffer(vkDevice, &bufferCI, vkAllocator, &ft->bindings.indexBD.buffer);
		vkBindBufferMemory(vkDevice, ft->bindings.indexBD.buffer, ft->deviceMemoryVert, offsetIndex);
		runningOffset += sizeIndex;
		// index += 1;

		assert(runningOffset == combined_vert_mem_reqs.size);


		runningOffset = 0;

		char *dstPtr = nullptr;
		char *srcPtr = nullptr;

		dstPtr = static_cast<char *>(deviceData) + runningOffset;
		srcPtr = reinterpret_cast<char *>(pkeIntrinsicsPlane.vert);
		memcpy(dstPtr, srcPtr, sizeVert);
		runningOffset += sizeVert;

		dstPtr = static_cast<char *>(deviceData) + runningOffset;
		srcPtr = reinterpret_cast<char *>(pkeIntrinsicsPlane.uv);
		memcpy(dstPtr, srcPtr, sizeUV);
		runningOffset += sizeUV;

		dstPtr = static_cast<char *>(deviceData) + runningOffset;
		srcPtr = reinterpret_cast<char *>(pkeIntrinsicsPlane.index);
		memcpy(dstPtr, srcPtr, sizeIndex);
		// runningOffset += sizeIndex;

		VkCommandBufferBeginInfo vkCommandBufferBeginInfo;
		vkCommandBufferBeginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		vkCommandBufferBeginInfo.pNext = nullptr;
		// TODO consider single-use?
		vkCommandBufferBeginInfo.flags = 0;
		vkCommandBufferBeginInfo.pInheritanceInfo = nullptr;
		vkBeginCommandBuffer(transferCommandBuffer, &vkCommandBufferBeginInfo);
		VkBufferCopy bufferCopys[expectedBufferCount];
		for (VkDeviceSize i = 0; i < expectedBufferCount; ++i) {
			bufferCopys[i].dstOffset = 0;
		}
		index = 0;
		bufferCopys[index].srcOffset = offsetVert;
		bufferCopys[index].size = sizeVert;
		vkCmdCopyBuffer(transferCommandBuffer, transferBuffer, ft->bindings.vertexBD.buffer, 1, &bufferCopys[index]);
		index+=1;

		bufferCopys[index].srcOffset = offsetUV;
		bufferCopys[index].size = sizeUV;
		vkCmdCopyBuffer(transferCommandBuffer, transferBuffer, ft->bindings.uvBD.buffer, 1, &bufferCopys[index]);
		index+=1;

		bufferCopys[index].srcOffset = offsetIndex;
		bufferCopys[index].size = sizeIndex;
		vkCmdCopyBuffer(transferCommandBuffer, transferBuffer, ft->bindings.indexBD.buffer, 1, &bufferCopys[index]);
		// index+=1;

		vkEndCommandBuffer(transferCommandBuffer);

		VkSubmitInfo submitInfo;
		submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
		submitInfo.pNext = nullptr;
		submitInfo.waitSemaphoreCount = 0;
		submitInfo.pWaitSemaphores = nullptr;
		submitInfo.pWaitDstStageMask = nullptr;
		submitInfo.commandBufferCount = 1;
		submitInfo.pCommandBuffers = &transferCommandBuffer;
		submitInfo.signalSemaphoreCount = 0;
		submitInfo.pSignalSemaphores = nullptr;
		vkQueueSubmit(transferQueue, 1, &submitInfo, nullptr);
		vkQueueWaitIdle(transferQueue);
	}
	EndTransferBuffer(transferBuffer, transferMemory);
	// set up instance buffer
	{
		ft->bindings.instanceBufferMaxCount = startingGlyphCount;
		bufferCI.size = combined_inst_mem_reqs.size;
		bufferCI.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
		vkCreateBuffer(vkDevice, &bufferCI, vkAllocator, &ft->bindings.instanceBD.buffer);
		vkBindBufferMemory(vkDevice, ft->bindings.instanceBD.buffer, ft->deviceMemoryInst, 0);
	}
	// texture // transition image layout and copy to buffer
	BeginTransferBuffer(combined_texture_mem_reqs.size, transferBuffer, transferMemory, deviceData);
	memcpy(deviceData, txtr_bytes, combined_texture_mem_reqs.size);
	{
		VkImageMemoryBarrier vkImageMemoryBarrier;
		vkImageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		vkImageMemoryBarrier.pNext = nullptr;
		vkImageMemoryBarrier.srcAccessMask = {};
		vkImageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		vkImageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
		vkImageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
		vkImageMemoryBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		vkImageMemoryBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		vkImageMemoryBarrier.image = ft->textureImage;
		vkImageMemoryBarrier.subresourceRange = VkImageSubresourceRange {
			.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
			.baseMipLevel = 0,
			// TODO MipMap
			.levelCount = 1,
			.baseArrayLayer = 0,
			.layerCount = 1,
		};

		VkCommandBufferBeginInfo vkCommandBufferBeginInfo;
		vkCommandBufferBeginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		vkCommandBufferBeginInfo.pNext = nullptr;
		vkCommandBufferBeginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
		vkCommandBufferBeginInfo.pInheritanceInfo = nullptr;

		vkBeginCommandBuffer(transferCommandBuffer, &vkCommandBufferBeginInfo);

		vkCmdPipelineBarrier(transferCommandBuffer, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &vkImageMemoryBarrier);

		VkBufferImageCopy vkBufferImageCopy;
		vkBufferImageCopy.bufferOffset = 0;
		vkBufferImageCopy.bufferRowLength = txtr_x;
		vkBufferImageCopy.bufferImageHeight = txtr_y;
		vkBufferImageCopy.imageSubresource = VkImageSubresourceLayers {
			.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
			.mipLevel = 0,
			.baseArrayLayer = 0,
			.layerCount = 1,
		};
		vkBufferImageCopy.imageOffset = VkOffset3D {
			.x = 0,
			.y = 0,
			.z = 0,
		};
		vkBufferImageCopy.imageExtent = VkExtent3D {
			.width = static_cast<uint32_t>(txtr_x),
			.height = static_cast<uint32_t>(txtr_y),
			.depth = 1,
		};
		vkCmdCopyBufferToImage(transferCommandBuffer, transferBuffer, ft->textureImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &vkBufferImageCopy);

		vkEndCommandBuffer(transferCommandBuffer);

		VkSubmitInfo submitInfo;
		submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
		submitInfo.pNext = nullptr;
		submitInfo.waitSemaphoreCount = 0;
		submitInfo.pWaitSemaphores = nullptr;
		submitInfo.pWaitDstStageMask = nullptr;
		submitInfo.commandBufferCount = 1;
		submitInfo.pCommandBuffers = &transferCommandBuffer;
		submitInfo.signalSemaphoreCount = 0;
		submitInfo.pSignalSemaphores = nullptr;
		vkQueueSubmit(transferQueue, 1, &submitInfo, nullptr);
		vkQueueWaitIdle(transferQueue);
		vkResetCommandBuffer(transferCommandBuffer, 0);
	}
	EndTransferBuffer(transferBuffer, transferMemory);
	{
		VkImageMemoryBarrier vkImageMemoryBarrier;
		vkImageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		vkImageMemoryBarrier.pNext = nullptr;
		vkImageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		vkImageMemoryBarrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		vkImageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
		vkImageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
		vkImageMemoryBarrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		vkImageMemoryBarrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		vkImageMemoryBarrier.image = ft->textureImage;
		vkImageMemoryBarrier.subresourceRange = VkImageSubresourceRange {
			.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
			.baseMipLevel = 0,
			// TODO MipMap
			.levelCount = 1,
			.baseArrayLayer = 0,
			.layerCount = 1,
		};

		VkCommandBufferBeginInfo vkCommandBufferBeginInfo;
		vkCommandBufferBeginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
		vkCommandBufferBeginInfo.pNext = nullptr;
		vkCommandBufferBeginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
		vkCommandBufferBeginInfo.pInheritanceInfo = nullptr;

		vkBeginCommandBuffer(graphicsCommandBuffer, &vkCommandBufferBeginInfo);

		vkCmdPipelineBarrier(graphicsCommandBuffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &vkImageMemoryBarrier);

		vkEndCommandBuffer(graphicsCommandBuffer);

		VkSubmitInfo submitInfo;
		submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
		submitInfo.pNext = nullptr;
		submitInfo.waitSemaphoreCount = 0;
		submitInfo.pWaitSemaphores = nullptr;
		submitInfo.pWaitDstStageMask = nullptr;
		submitInfo.commandBufferCount = 1;
		submitInfo.pCommandBuffers = &graphicsCommandBuffer;
		submitInfo.signalSemaphoreCount = 0;
		submitInfo.pSignalSemaphores = nullptr;
		vkQueueSubmit(graphicsQueue, 1, &submitInfo, nullptr);
		vkQueueWaitIdle(graphicsQueue);
	}

	/* 
	 * Vulkan descriptor sets
	 */
	VkDescriptorPoolSize descriptorPoolSizes[1];
	descriptorPoolSizes[0].type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
	descriptorPoolSizes[0].descriptorCount = MAX_FRAMES_IN_FLIGHT;

	VkDescriptorPoolCreateInfo vkDescriptorPoolCreateInfo;
	vkDescriptorPoolCreateInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
	vkDescriptorPoolCreateInfo.pNext = nullptr;
	vkDescriptorPoolCreateInfo.flags = 0;
	vkDescriptorPoolCreateInfo.maxSets = MAX_FRAMES_IN_FLIGHT;
	vkDescriptorPoolCreateInfo.poolSizeCount = (uint32_t)1;
	vkDescriptorPoolCreateInfo.pPoolSizes = descriptorPoolSizes;

	// consider making me a global pool
	vkResult = vkCreateDescriptorPool(vkDevice, &vkDescriptorPoolCreateInfo, vkAllocator, &ft->vkDescriptorPool);
	assert(vkResult == VK_SUCCESS);

	VkDescriptorSetLayout descriptorSets[MAX_FRAMES_IN_FLIGHT];
	for (long i = 0; i < MAX_FRAMES_IN_FLIGHT; ++i) {
		descriptorSets[i] = pkePipelines.descr_layouts.named.glyph;
	}
	VkDescriptorSetAllocateInfo vkDescriptorSetAllocateInfo;
	vkDescriptorSetAllocateInfo.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
	vkDescriptorSetAllocateInfo.pNext = nullptr;
	vkDescriptorSetAllocateInfo.descriptorPool = ft->vkDescriptorPool;
	vkDescriptorSetAllocateInfo.descriptorSetCount = MAX_FRAMES_IN_FLIGHT;
	vkDescriptorSetAllocateInfo.pSetLayouts = descriptorSets;

	ft->vkDescriptorSets = pk_new<VkDescriptorSet>(MAX_FRAMES_IN_FLIGHT);
	for (long i = 0; i < MAX_FRAMES_IN_FLIGHT; ++i) {
		ft->vkDescriptorSets[i] = VkDescriptorSet{};
	}
	vkResult = vkAllocateDescriptorSets(vkDevice, &vkDescriptorSetAllocateInfo, ft->vkDescriptorSets);
	assert(vkResult == VK_SUCCESS);

	VkWriteDescriptorSet writeDescriptorSets[1 * MAX_FRAMES_IN_FLIGHT];
	for (long i = 0; i < 1 * MAX_FRAMES_IN_FLIGHT; ++i) {
		writeDescriptorSets[i].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
		writeDescriptorSets[i].pNext = nullptr;
		writeDescriptorSets[i].dstSet = nullptr;
		writeDescriptorSets[i].dstBinding = i;
		writeDescriptorSets[i].dstArrayElement = 0;
		writeDescriptorSets[i].descriptorCount = 1;
		writeDescriptorSets[i].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
		writeDescriptorSets[i].pImageInfo = nullptr;
		writeDescriptorSets[i].pBufferInfo = nullptr;
		writeDescriptorSets[i].pTexelBufferView = nullptr;
	}

	VkDescriptorImageInfo textureDescriptorInfo;
	textureDescriptorInfo.sampler = pkePipelines.vkSampler_Texture;
	textureDescriptorInfo.imageView = ft->textureImageView;
	textureDescriptorInfo.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

	VkDescriptorBufferInfo vkDescriptorBufferInfo[MAX_FRAMES_IN_FLIGHT];

	for (long i = 0; i < MAX_FRAMES_IN_FLIGHT; ++i) {
		vkDescriptorBufferInfo[i].buffer = UniformBuffers[i];
		vkDescriptorBufferInfo[i].offset = 0;
		vkDescriptorBufferInfo[i].range = sizeof(UniformBufferObject);

		long uboIndex = i * 2;
		long samplerIndex = uboIndex + 1;

		writeDescriptorSets[uboIndex].pBufferInfo = &vkDescriptorBufferInfo[i];
		writeDescriptorSets[uboIndex].dstSet = ft->vkDescriptorSets[i];

		writeDescriptorSets[samplerIndex].pImageInfo = &textureDescriptorInfo;
		writeDescriptorSets[samplerIndex].dstSet = ft->vkDescriptorSets[i];
	}

	vkUpdateDescriptorSets(vkDevice, 2 * MAX_FRAMES_IN_FLIGHT, writeDescriptorSets, 0, nullptr);

	return idx;
}

void FontType_Unload(FontTypeIndex idx)
{
	FontType *ft = &ftd.arr_ft[(FontTypeIndex_T)idx];

	if (ft->vkDescriptorSets != VK_NULL_HANDLE && ft->vkDescriptorPool != VK_NULL_HANDLE) {
		// 2023-09-27 - JCB (copied from entities.cpp)
		// We are not setting the pool flag for allowing freeing descriptor sets
		//  so all we need to do is destroy the pool
		// If we switch to a global pool, we will need to free here, and
		//  destroy the pool outside of this loop
		vkDestroyDescriptorPool(vkDevice, ft->vkDescriptorPool, vkAllocator);
		ft->vkDescriptorSets = CAFE_BABE(VkDescriptorSet);
		ft->vkDescriptorPool = VK_NULL_HANDLE;
	}

	if (ft->bindings.vertexBD.buffer != VK_NULL_HANDLE)
		vkDestroyBuffer(vkDevice, ft->bindings.vertexBD.buffer, vkAllocator);
	ft->bindings.vertexBD.buffer = VK_NULL_HANDLE;
	ft->bindings.vertexBD.firstBinding = 0;
	ft->bindings.vertexBD.bindingCount = 0;
	ft->bindings.vertexBD.offsets[0] = 0;

	if (ft->bindings.uvBD.buffer != VK_NULL_HANDLE)
		vkDestroyBuffer(vkDevice, ft->bindings.uvBD.buffer, vkAllocator);
	ft->bindings.uvBD.buffer = VK_NULL_HANDLE;
	ft->bindings.uvBD.firstBinding = 0;
	ft->bindings.uvBD.bindingCount = 0;
	ft->bindings.uvBD.offsets[0] = 0;

	if (ft->bindings.indexBD.buffer != VK_NULL_HANDLE)
		vkDestroyBuffer(vkDevice, ft->bindings.indexBD.buffer, vkAllocator);
	ft->bindings.indexBD.buffer = VK_NULL_HANDLE;
	ft->bindings.indexBD.bindingCount = 0;
	ft->bindings.indexBD.offsets[0] = 0;
	ft->bindings.indexCount = 0;

	if (ft->bindings.instanceBD.buffer != VK_NULL_HANDLE)
		vkDestroyBuffer(vkDevice, ft->bindings.instanceBD.buffer, vkAllocator);
	ft->bindings.instanceBD.buffer = VK_NULL_HANDLE;
	ft->bindings.instanceBD.firstBinding = 0;
	ft->bindings.instanceBD.bindingCount = 0;
	ft->bindings.instanceCounter = 0;
	ft->bindings.instanceBufferMaxCount = 0;
	ft->bindings.instanceBD.offsets[0] = 0;

	if (ft->textureImageView != VK_NULL_HANDLE)
		vkDestroyImageView(vkDevice, ft->textureImageView, vkAllocator);
	ft->textureImageView = VK_NULL_HANDLE;

	if (ft->textureImage != VK_NULL_HANDLE)
		vkDestroyImage(vkDevice, ft->textureImage, vkAllocator);
	ft->textureImage = VK_NULL_HANDLE;

	if (ft->deviceMemoryInst != VK_NULL_HANDLE)
		vkFreeMemory(vkDevice, ft->deviceMemoryInst, vkAllocator);
	ft->deviceMemoryInst = VK_NULL_HANDLE;

	if (ft->deviceMemoryVert != VK_NULL_HANDLE)
		vkFreeMemory(vkDevice, ft->deviceMemoryVert, vkAllocator);
	ft->deviceMemoryVert = VK_NULL_HANDLE;

	if (ft->deviceMemoryTexture != VK_NULL_HANDLE)
		vkFreeMemory(vkDevice, ft->deviceMemoryTexture, vkAllocator);
	ft->deviceMemoryTexture = VK_NULL_HANDLE;
}