#include "texture_loading.h"
#include "lodepng.cpp"
#ifdef _WIN32
	#include <nlohmann/json.hpp>
	#include <iostream>
	#include <fstream>
	#include <string>
#endif

using namespace std;

TextureLoading::TextureLoading()
{
	zoom = -1.f;
	//rotation = { 0.0f, 15.0f, 0.0f };
	rotation = { 0.0f, 0.0f, 0.0f };
	title = "Texture loading";
	this_instance = this;
}

TextureLoading::~TextureLoading()
{
	if (has_device())
	{
		// Clean up used Vulkan resources
		// Note : Inherited destructor cleans up resources stored in base class

		vkDestroyPipeline(get_device().get_handle(), pipelines.solid, nullptr);
		vkDestroyPipeline(get_device().get_handle(), pipelines.background, nullptr);
		vkDestroyPipeline(get_device().get_handle(), pipelines.point, nullptr);
		vkDestroyPipeline(get_device().get_handle(), pipelines.line, nullptr);

		vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layout, nullptr);
		vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layout_bg, nullptr);
		vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layout_point, nullptr);
		vkDestroyPipelineLayout(get_device().get_handle(), pipeline_layout_point_line, nullptr);

		vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layout, nullptr);
		vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layout_bg, nullptr);
		vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layout_point, nullptr);
		vkDestroyDescriptorSetLayout(get_device().get_handle(), descriptor_set_layout_point_line, nullptr);
		
	}

	destroy_texture(texture);
	destroy_texture(texture_point);
	destroy_texture(texture_point_line);
	destroy_texture(cam_text);

	vertex_buffer.reset();
	index_buffer.reset();
	uniform_buffer_vs.reset();
	uniform_buffer_vs_point.reset();
	uniform_buffer_DashParameters.reset();

	
	vertex_buffer_point.reset(); // BufferC 会自动清理
	//stop();
}

// Enable physical device features required for this example
void TextureLoading::request_gpu_features(vkb::PhysicalDevice& gpu)
{
	// Enable anisotropic filtering if supported
	if (gpu.get_features().samplerAnisotropy)
	{
		gpu.get_mutable_requested_features().samplerAnisotropy = VK_TRUE;
	}
}



void hslToRgb(float h, float s, float l, uint8_t& r, uint8_t& g, uint8_t& b) {
	float c = (1 - std::abs(2 * l - 1)) * s;
	float x = c * (1 - std::abs(std::fmod(h / 60.0f, 2.0f) - 1));
	float m = l - c / 2.0f;

	float r_, g_, b_;

	if (h < 60) {
		r_ = c; g_ = x; b_ = 0;
	}
	else if (h < 120) {
		r_ = x; g_ = c; b_ = 0;
	}
	else if (h < 180) {
		r_ = 0; g_ = c; b_ = x;
	}
	else if (h < 240) {
		r_ = 0; g_ = x; b_ = c;
	}
	else if (h < 300) {
		r_ = x; g_ = 0; b_ = c;
	}
	else {
		r_ = c; g_ = 0; b_ = x;
	}

	r = static_cast<uint8_t>((r_ + m) * 255);
	g = static_cast<uint8_t>((g_ + m) * 255);
	b = static_cast<uint8_t>((b_ + m) * 255);
}

std::vector<uint8_t> generateSimpleTestImage(int width, int height, int cell_width) {
	std::vector<uint8_t> imageData(width * height * 4);

	int gridCols = (width + cell_width - 1) / cell_width;
	int gridRows = (height + cell_width - 1) / cell_width;

	// 存储每个单元格的颜色
	std::vector<std::vector<std::vector<uint8_t>>> cellColors(
		gridRows,
		std::vector<std::vector<uint8_t>>(
			gridCols,
			std::vector<uint8_t>(4)
		)
	);

	// 为每个单元格生成不同的颜色
	for (int gridY = 0; gridY < gridRows; ++gridY) {
		for (int gridX = 0; gridX < gridCols; ++gridX) {
			// 使用网格坐标生成HSL颜色
			float hue = static_cast<float>(gridX + gridY * gridCols) / (gridCols * gridRows) * 360.0f;
			float saturation = 0.7f + 0.3f * static_cast<float>(gridX % 2);  // 交替饱和度
			float lightness = 0.5f + 0.2f * static_cast<float>(gridY % 2);   // 交替亮度

			uint8_t r, g, b;
			hslToRgb(hue, saturation, lightness, r, g, b);

			cellColors[gridY][gridX][0] = r;
			cellColors[gridY][gridX][1] = g;
			cellColors[gridY][gridX][2] = b;
			cellColors[gridY][gridX][3] = 255;
			if (gridY == 0 && gridX == 0)
			{
				cellColors[gridY][gridX][0] = 0;
				cellColors[gridY][gridX][1] = 0;
				cellColors[gridY][gridX][2] = 0;
				cellColors[gridY][gridX][3] = 255;
			}

			if (gridY == 0 && gridX == gridCols-1)
			{
				cellColors[gridY][gridX][0] = 255;
				cellColors[gridY][gridX][1] = 0;
				cellColors[gridY][gridX][2] = 0;
				cellColors[gridY][gridX][3] = 255;
			}

			if (gridY == gridRows-1 && gridX == 0)
			{
				cellColors[gridY][gridX][0] = 0;
				cellColors[gridY][gridX][1] = 0;
				cellColors[gridY][gridX][2] = 255;
				cellColors[gridY][gridX][3] = 255;
			}

			if (gridY == gridRows - 1 && gridX == gridCols - 1)
			{
				cellColors[gridY][gridX][0] = 255;
				cellColors[gridY][gridX][1] = 255;
				cellColors[gridY][gridX][2] = 255;
				cellColors[gridY][gridX][3] = 255;
			}
		}
	}

	// 填充像素数据
	for (int y = 0; y < height; ++y) {
		int gridY = y / cell_width;

		for (int x = 0; x < width; ++x) {
			int gridX = x / cell_width;

			if (gridY < gridRows && gridX < gridCols) {
				const uint8_t* color = cellColors[gridY][gridX].data();
				int index = (y * width + x) * 4;

				imageData[index] = color[0]/5;
				imageData[index + 1] = color[1]/3;
				imageData[index + 2] = color[2]/3;
				imageData[index + 3] = color[3]/3;
			}
		}
	}

	return imageData;
}

void TextureLoading::load_texture()
{
	// We use the Khronos texture format (https://www.khronos.org/opengles/sdk/tools/KTX/file_format_spec/)
	std::string filename = vkb::fs::path::get(vkb::fs::path::Assets, "textures/metalplate01_rgba.ktx");
	// ktx1 doesn't know whether the content is sRGB or linear, but most tools save in sRGB, so assume that.
	VkFormat format = VK_FORMAT_R8G8B8A8_SRGB;

	ktxTexture* ktx_texture;
	KTX_error_code result;

	result = ktxTexture_CreateFromNamedFile(filename.c_str(), KTX_TEXTURE_CREATE_LOAD_IMAGE_DATA_BIT, &ktx_texture);

	if (ktx_texture == nullptr)
	{
		throw std::runtime_error("Couldn't load texture");
	}

	// assert(!tex2D.empty());

	texture.width = ktx_texture->baseWidth;
	texture.height = ktx_texture->baseHeight;
	texture.mip_levels = ktx_texture->numLevels;

	// We prefer using staging to copy the texture data to a device local optimal image
	VkBool32 use_staging = true;

	// Only use linear tiling if forced
	bool force_linear_tiling = false;
	if (force_linear_tiling)
	{
		// Don't use linear if format is not supported for (linear) shader sampling
		// Get device properties for the requested texture format
		VkFormatProperties format_properties;
		vkGetPhysicalDeviceFormatProperties(get_device().get_gpu().get_handle(), format, &format_properties);
		use_staging = !(format_properties.linearTilingFeatures & VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT);
	}

	VkMemoryAllocateInfo memory_allocate_info = vkb::initializers::memory_allocate_info();
	VkMemoryRequirements memory_requirements = {};

	ktx_uint8_t* ktx_image_data = ktx_texture->pData;
	ktx_size_t   ktx_texture_size = ktx_texture->dataSize;

	if (use_staging)
	{
		// Copy data to an optimal tiled image
		// This loads the texture data into a host local buffer that is copied to the optimal tiled image on the device

		// Create a host-visible staging buffer that contains the raw image data
		// This buffer will be the data source for copying texture data to the optimal tiled image on the device
		VkBuffer       staging_buffer;
		VkDeviceMemory staging_memory;

		VkBufferCreateInfo buffer_create_info = vkb::initializers::buffer_create_info();
		buffer_create_info.size = ktx_texture_size;
		// This buffer is used as a transfer source for the buffer copy
		buffer_create_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
		buffer_create_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
		VK_CHECK(vkCreateBuffer(get_device().get_handle(), &buffer_create_info, nullptr, &staging_buffer));

		// Get memory requirements for the staging buffer (alignment, memory type bits)
		vkGetBufferMemoryRequirements(get_device().get_handle(), staging_buffer, &memory_requirements);
		memory_allocate_info.allocationSize = memory_requirements.size;
		// Get memory type index for a host visible buffer
		memory_allocate_info.memoryTypeIndex =
			get_device().get_gpu().get_memory_type(memory_requirements.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
		VK_CHECK(vkAllocateMemory(get_device().get_handle(), &memory_allocate_info, nullptr, &staging_memory));
		VK_CHECK(vkBindBufferMemory(get_device().get_handle(), staging_buffer, staging_memory, 0));

		// Copy texture data into host local staging buffer

		uint8_t* data;
		VK_CHECK(vkMapMemory(get_device().get_handle(), staging_memory, 0, memory_requirements.size, 0, (void**)&data));
		memcpy(data, ktx_image_data, ktx_texture_size);
		vkUnmapMemory(get_device().get_handle(), staging_memory);

		// Setup buffer copy regions for each mip level
		std::vector<VkBufferImageCopy> buffer_copy_regions;
		for (uint32_t i = 0; i < texture.mip_levels; i++)
		{
			ktx_size_t        offset;
			KTX_error_code    result = ktxTexture_GetImageOffset(ktx_texture, i, 0, 0, &offset);
			VkBufferImageCopy buffer_copy_region = {};
			buffer_copy_region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
			buffer_copy_region.imageSubresource.mipLevel = i;
			buffer_copy_region.imageSubresource.baseArrayLayer = 0;
			buffer_copy_region.imageSubresource.layerCount = 1;
			buffer_copy_region.imageExtent.width = ktx_texture->baseWidth >> i;
			buffer_copy_region.imageExtent.height = ktx_texture->baseHeight >> i;
			buffer_copy_region.imageExtent.depth = 1;
			buffer_copy_region.bufferOffset = offset;
			buffer_copy_regions.push_back(buffer_copy_region);
		}

		// Create optimal tiled target image on the device
		VkImageCreateInfo image_create_info = vkb::initializers::image_create_info();
		image_create_info.imageType = VK_IMAGE_TYPE_2D;
		image_create_info.format = format;
		image_create_info.mipLevels = texture.mip_levels;
		image_create_info.arrayLayers = 1;
		image_create_info.samples = VK_SAMPLE_COUNT_1_BIT;
		image_create_info.tiling = VK_IMAGE_TILING_OPTIMAL;
		image_create_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
		// Set initial layout of the image to undefined
		image_create_info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
		image_create_info.extent = { texture.width, texture.height, 1 };
		image_create_info.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
		VK_CHECK(vkCreateImage(get_device().get_handle(), &image_create_info, nullptr, &texture.image));

		vkGetImageMemoryRequirements(get_device().get_handle(), texture.image, &memory_requirements);
		memory_allocate_info.allocationSize = memory_requirements.size;
		memory_allocate_info.memoryTypeIndex = get_device().get_gpu().get_memory_type(memory_requirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
		VK_CHECK(vkAllocateMemory(get_device().get_handle(), &memory_allocate_info, nullptr, &texture.device_memory));
		VK_CHECK(vkBindImageMemory(get_device().get_handle(), texture.image, texture.device_memory, 0));

		VkCommandBuffer copy_command = get_device().create_command_buffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);

		// Image memory barriers for the texture image

		// The sub resource range describes the regions of the image that will be transitioned using the memory barriers below
		VkImageSubresourceRange subresource_range = {};
		// Image only contains color data
		subresource_range.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		// Start at first mip level
		subresource_range.baseMipLevel = 0;
		// We will transition on all mip levels
		subresource_range.levelCount = texture.mip_levels;
		// The 2D texture only has one layer
		subresource_range.layerCount = 1;

		// Transition the texture image layout to transfer target, so we can safely copy our buffer data to it.
		VkImageMemoryBarrier image_memory_barrier = vkb::initializers::image_memory_barrier();

		image_memory_barrier.image = texture.image;
		image_memory_barrier.subresourceRange = subresource_range;
		image_memory_barrier.srcAccessMask = 0;
		image_memory_barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
		image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;

		// Insert a memory dependency at the proper pipeline stages that will execute the image layout transition
		// Source pipeline stage is host write/read execution (VK_PIPELINE_STAGE_HOST_BIT)
		// Destination pipeline stage is copy command execution (VK_PIPELINE_STAGE_TRANSFER_BIT)
		vkCmdPipelineBarrier(
			copy_command,
			VK_PIPELINE_STAGE_HOST_BIT,
			VK_PIPELINE_STAGE_TRANSFER_BIT,
			0,
			0, nullptr,
			0, nullptr,
			1, &image_memory_barrier);

		// Copy mip levels from staging buffer
		vkCmdCopyBufferToImage(
			copy_command,
			staging_buffer,
			texture.image,
			VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
			static_cast<uint32_t>(buffer_copy_regions.size()),
			buffer_copy_regions.data());

		// Once the data has been uploaded we transfer to the texture image to the shader read layout, so it can be sampled from
		image_memory_barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
		image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

		// Insert a memory dependency at the proper pipeline stages that will execute the image layout transition
		// Source pipeline stage stage is copy command execution (VK_PIPELINE_STAGE_TRANSFER_BIT)
		// Destination pipeline stage fragment shader access (VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT)
		vkCmdPipelineBarrier(
			copy_command,
			VK_PIPELINE_STAGE_TRANSFER_BIT,
			VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
			0,
			0, nullptr,
			0, nullptr,
			1, &image_memory_barrier);

		// Store current layout for later reuse
		texture.image_layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

		get_device().flush_command_buffer(copy_command, queue, true);

		// Clean up staging resources
		vkDestroyBuffer(get_device().get_handle(), staging_buffer, nullptr);
		vkFreeMemory(get_device().get_handle(), staging_memory, nullptr);
	}
	else
	{
		// Copy data to a linear tiled image

		VkImage        mappable_image;
		VkDeviceMemory mappable_memory;

		// Load mip map level 0 to linear tiling image
		VkImageCreateInfo image_create_info = vkb::initializers::image_create_info();
		image_create_info.imageType = VK_IMAGE_TYPE_2D;
		image_create_info.format = format;
		image_create_info.mipLevels = 1;
		image_create_info.arrayLayers = 1;
		image_create_info.samples = VK_SAMPLE_COUNT_1_BIT;
		image_create_info.tiling = VK_IMAGE_TILING_LINEAR;
		image_create_info.usage = VK_IMAGE_USAGE_SAMPLED_BIT;
		image_create_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
		image_create_info.initialLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
		image_create_info.extent = { texture.width, texture.height, 1 };
		VK_CHECK(vkCreateImage(get_device().get_handle(), &image_create_info, nullptr, &mappable_image));

		// Get memory requirements for this image like size and alignment
		vkGetImageMemoryRequirements(get_device().get_handle(), mappable_image, &memory_requirements);
		// Set memory allocation size to required memory size
		memory_allocate_info.allocationSize = memory_requirements.size;
		// Get memory type that can be mapped to host memory
		memory_allocate_info.memoryTypeIndex =
			get_device().get_gpu().get_memory_type(memory_requirements.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
		VK_CHECK(vkAllocateMemory(get_device().get_handle(), &memory_allocate_info, nullptr, &mappable_memory));
		VK_CHECK(vkBindImageMemory(get_device().get_handle(), mappable_image, mappable_memory, 0));

		// Map image memory
		void* data;
		ktx_size_t ktx_image_size = ktxTexture_GetImageSize(ktx_texture, 0);
		VK_CHECK(vkMapMemory(get_device().get_handle(), mappable_memory, 0, memory_requirements.size, 0, &data));
		// Copy image data of the first mip level into memory
		memcpy(data, ktx_image_data, ktx_image_size);
		vkUnmapMemory(get_device().get_handle(), mappable_memory);

		// Linear tiled images don't need to be staged and can be directly used as textures
		texture.image = mappable_image;
		texture.device_memory = mappable_memory;
		texture.image_layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

		// Setup image memory barrier transfer image to shader read layout
		VkCommandBuffer copy_command = get_device().create_command_buffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);

		// The sub resource range describes the regions of the image we will be transition
		VkImageSubresourceRange subresource_range = {};
		subresource_range.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		subresource_range.baseMipLevel = 0;
		subresource_range.levelCount = 1;
		subresource_range.layerCount = 1;

		// Transition the texture image layout to shader read, so it can be sampled from
		VkImageMemoryBarrier image_memory_barrier = vkb::initializers::image_memory_barrier();
		;
		image_memory_barrier.image = texture.image;
		image_memory_barrier.subresourceRange = subresource_range;
		image_memory_barrier.srcAccessMask = VK_ACCESS_HOST_WRITE_BIT;
		image_memory_barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
		image_memory_barrier.oldLayout = VK_IMAGE_LAYOUT_PREINITIALIZED;
		image_memory_barrier.newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

		// Insert a memory dependency at the proper pipeline stages that will execute the image layout transition
		// Source pipeline stage is host write/read execution (VK_PIPELINE_STAGE_HOST_BIT)
		// Destination pipeline stage fragment shader access (VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT)
		vkCmdPipelineBarrier(
			copy_command,
			VK_PIPELINE_STAGE_HOST_BIT,
			VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
			0,
			0, nullptr,
			0, nullptr,
			1, &image_memory_barrier);

		get_device().flush_command_buffer(copy_command, queue, true);
	}

	// now, the ktx_texture can be destroyed
	ktxTexture_Destroy(ktx_texture);

	// Calculate valid filter and mipmap modes
	VkFilter            filter = VK_FILTER_LINEAR;
	VkSamplerMipmapMode mipmap_mode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
	vkb::make_filters_valid(get_device().get_gpu().get_handle(), format, &filter, &mipmap_mode);

	// Create a texture sampler
	// In Vulkan textures are accessed by samplers
	// This separates all the sampling information from the texture data. This means you could have multiple sampler objects for the same texture with different settings
	// Note: Similar to the samplers available with OpenGL 3.3
	VkSamplerCreateInfo sampler = vkb::initializers::sampler_create_info();
	sampler.magFilter = filter;
	sampler.minFilter = filter;
	sampler.mipmapMode = mipmap_mode;
	sampler.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	sampler.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	sampler.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
	sampler.mipLodBias = 0.0f;
	sampler.compareOp = VK_COMPARE_OP_NEVER;
	sampler.minLod = 0.0f;
	// Set max level-of-detail to mip level count of the texture
	sampler.maxLod = (use_staging) ? static_cast<float>(texture.mip_levels) : 0.0f;
	// Enable anisotropic filtering
	// This feature is optional, so we must check if it's supported on the device
	if (get_device().get_gpu().get_features().samplerAnisotropy)
	{
		// Use max. level of anisotropy for this example
		sampler.maxAnisotropy = get_device().get_gpu().get_properties().limits.maxSamplerAnisotropy;
		sampler.anisotropyEnable = VK_TRUE;
	}
	else
	{
		// The device does not support anisotropic filtering
		sampler.maxAnisotropy = 1.0;
		sampler.anisotropyEnable = VK_FALSE;
	}
	sampler.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;
	VK_CHECK(vkCreateSampler(get_device().get_handle(), &sampler, nullptr, &texture.sampler));

	// Create image view
	// Textures are not directly accessed by the shaders and
	// are abstracted by image views containing additional
	// information and sub resource ranges
	VkImageViewCreateInfo view = vkb::initializers::image_view_create_info();
	view.viewType = VK_IMAGE_VIEW_TYPE_2D;
	view.format = format;
	view.components = { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A };
	// The subresource range describes the set of mip levels (and array layers) that can be accessed through this image view
	// It's possible to create multiple image views for a single image referring to different (and/or overlapping) ranges of the image
	view.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	view.subresourceRange.baseMipLevel = 0;
	view.subresourceRange.baseArrayLayer = 0;
	view.subresourceRange.layerCount = 1;
	// Linear tiling usually won't support mip maps
	// Only set mip map count if optimal tiling is used
	view.subresourceRange.levelCount = (use_staging) ? texture.mip_levels : 1;
	// The view will be based on the texture's image
	view.image = texture.image;
	VK_CHECK(vkCreateImageView(get_device().get_handle(), &view, nullptr, &texture.view));
}

// Free all Vulkan resources used by a texture object
void TextureLoading::destroy_texture(Texture texture)
{
	vkDestroyImageView(get_device().get_handle(), texture.view, nullptr);
	vkDestroyImage(get_device().get_handle(), texture.image, nullptr);
	vkDestroySampler(get_device().get_handle(), texture.sampler, nullptr);
	vkFreeMemory(get_device().get_handle(), texture.device_memory, nullptr);
}



void TextureLoading::build_command_buffers()
{
	VkCommandBufferBeginInfo command_buffer_begin_info = vkb::initializers::command_buffer_begin_info();

	VkClearValue clear_values[2];
	clear_values[0].color = default_clear_color;
	clear_values[1].depthStencil = { 0.0f, 0 };

	VkRenderPassBeginInfo render_pass_begin_info = vkb::initializers::render_pass_begin_info();
	render_pass_begin_info.renderPass = render_pass;
	render_pass_begin_info.renderArea.offset.x = 0;
	render_pass_begin_info.renderArea.offset.y = 0;
	render_pass_begin_info.renderArea.extent.width = width;
	render_pass_begin_info.renderArea.extent.height = height;
	render_pass_begin_info.clearValueCount = 2;
	render_pass_begin_info.pClearValues = clear_values;

	for (int32_t i = 0; i < draw_cmd_buffers.size(); ++i)
	{
		// Set target frame buffer
		render_pass_begin_info.framebuffer = framebuffers[i];

		VK_CHECK(vkBeginCommandBuffer(draw_cmd_buffers[i], &command_buffer_begin_info));

		vkCmdBeginRenderPass(draw_cmd_buffers[i], &render_pass_begin_info, VK_SUBPASS_CONTENTS_INLINE);

		VkViewport viewport = vkb::initializers::viewport(static_cast<float>(width), static_cast<float>(height), 0.0f, 1.0f);
		vkCmdSetViewport(draw_cmd_buffers[i], 0, 1, &viewport);

		VkRect2D scissor = vkb::initializers::rect2D(width, height, 0, 0);
		vkCmdSetScissor(draw_cmd_buffers[i], 0, 1, &scissor);

		vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout_bg, 0, 1, &descriptor_set_bg, 0, NULL);
		vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.background);


		vkCmdPushConstants(draw_cmd_buffers[i], pipeline_layout_bg, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(float), &myFloatValue);

		vkCmdDraw(draw_cmd_buffers[i], 6, 1, 0, 0);

		

		//draw_point_cloud(draw_cmd_buffers[i]);
		//draw_point_cloud_line(draw_cmd_buffers[i]);


		vkCmdBindDescriptorSets(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout, 0, 1, &descriptor_set, 0, NULL);
		vkCmdBindPipeline(draw_cmd_buffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.solid);

		VkDeviceSize offsets[1] = { 0 };
		vkCmdBindVertexBuffers(draw_cmd_buffers[i], 0, 1, vertex_buffer->get(), offsets);
		vkCmdBindIndexBuffer(draw_cmd_buffers[i], index_buffer->get_handle(), 0, VK_INDEX_TYPE_UINT32);
		vkCmdDrawIndexed(draw_cmd_buffers[i], index_count, 1, 0, 0, 0);

		//draw_ui(draw_cmd_buffers[i]);

		vkCmdEndRenderPass(draw_cmd_buffers[i]);

		VK_CHECK(vkEndCommandBuffer(draw_cmd_buffers[i]));
	}
}

void TextureLoading::draw()
{
	std::unique_lock<std::mutex> lock(mtx);
	std::unique_lock<std::mutex> lock_point(mtx_point);
	std::lock_guard<std::mutex> lock_line(mtx_point_line);
	std::unique_lock<std::mutex> lock_mvp(mtx_mvp);
	ApiVulkanSample::prepare_frame();


	// --- 新增：在命令缓冲区中绘制点云 ---
	// 在 build_command_buffers 中已经构建了命令缓冲区，但点数据是动态的。
	// 因此，我们在这里重新记录命令缓冲区。
	// 注意：更高效的做法是使用动态顶点缓冲区或间接绘制，但对于 Demo 来说，重新记录是可以接受的。
	build_command_buffers(); // 重新构建所有命令缓冲区以包含最新的点云

	// Command buffer to be submitted to the queue
	submit_info.commandBufferCount = 1;
	submit_info.pCommandBuffers = &draw_cmd_buffers[current_buffer];

	// Submit to queue
	VK_CHECK(vkQueueSubmit(queue, 1, &submit_info, VK_NULL_HANDLE));

	ApiVulkanSample::submit_frame();
}

#include <vector>
#include <string>
#include <fstream>
#include <sstream>
#include <unordered_map>


bool TextureLoading::LoadOBJ_test(const std::string& filename, std::vector<float>& temp_positions)
{
	std::ifstream file(filename);
	if (!file.is_open()) {
		return false;
	}
	temp_positions.clear();
	std::string line;
	while (std::getline(file, line)) {
		// 跳过空行和注释行
		if (line.empty() || line[0] == '#') {
			continue;
		}

		std::istringstream iss(line);
		std::string type;
		iss >> type;

		if (type == "v") { // 顶点位置
			float x, y, z;
			iss >> x >> y >> z;
			temp_positions.push_back(x);
			temp_positions.push_back(y);
			temp_positions.push_back(z);
		}
	}
	file.close();
}

bool TextureLoading::LoadOBJ(const std::string& filename,
	std::vector<TextureLoadingVertexStructure>& vertices,
	std::vector<uint32_t>& indices) {

	// 临时存储从OBJ文件读取的原始数据
	std::vector<float> temp_positions;
	std::vector<float> temp_texcoords;
	std::vector<float> temp_normals;

	// 用于处理顶点索引
	std::vector<int> vertexIndices, uvIndices, normalIndices;

	std::ifstream file(filename);
	if (!file.is_open()) {
		return false;
	}

	std::string line;
	while (std::getline(file, line)) {
		// 跳过空行和注释行
		if (line.empty() || line[0] == '#') {
			continue;
		}

		std::istringstream iss(line);
		std::string type;
		iss >> type;

		if (type == "v") { // 顶点位置
			float x, y, z;
			iss >> x >> y >> z;
			temp_positions.push_back(x);
			temp_positions.push_back(y);
			temp_positions.push_back(z);
		}
		else if (type == "vt") { // 纹理坐标
			float u, v;
			iss >> u >> v;
			temp_texcoords.push_back(u);
			temp_texcoords.push_back(1-v);
		}
		else if (type == "vn") { // 法线
			float nx, ny, nz;
			iss >> nx >> ny >> nz;
			temp_normals.push_back(nx);
			temp_normals.push_back(ny);
			temp_normals.push_back(nz);
		}
		else if (type == "f") { // 面（三角形）
			std::string vertex1, vertex2, vertex3;
			iss >> vertex1 >> vertex2 >> vertex3;

			// 处理每个顶点的索引
			for (const std::string& vertex : { vertex1, vertex2, vertex3 }) {
				std::istringstream viss(vertex);
				std::string v, vt, vn;

				// 解析顶点索引格式：v/vt/vn 或 v//vn 或 v
				std::getline(viss, v, '/');
				std::getline(viss, vt, '/');
				std::getline(viss, vn, '/');

				int posIndex = std::stoi(v) - 1; // OBJ索引从1开始
				int texIndex = -1, normIndex = -1;

				if (!vt.empty()) texIndex = std::stoi(vt) - 1;
				if (!vn.empty()) normIndex = std::stoi(vn) - 1;

				vertexIndices.push_back(posIndex);
				uvIndices.push_back(texIndex);
				normalIndices.push_back(normIndex);
			}
		}
	}
	file.close();

	// 创建顶点数据
	vertices.clear();
	indices.clear();

	// 用于去重的哈希映射
	std::unordered_map<std::string, uint32_t> vertexMap;

	for (size_t i = 0; i < vertexIndices.size(); i++) {
		int posIndex = vertexIndices[i];
		int texIndex = uvIndices[i];
		int normIndex = normalIndices[i];

		// 创建唯一标识符
		std::string vertexKey = std::to_string(posIndex) + "/" +
			std::to_string(texIndex) + "/" +
			std::to_string(normIndex);

		// 检查是否已经存在相同的顶点
		if (vertexMap.find(vertexKey) != vertexMap.end()) {
			// 使用现有顶点的索引
			indices.push_back(vertexMap[vertexKey]);
		}
		else {
			// 创建新顶点
			TextureLoadingVertexStructure vertex;

			// 设置位置
			if (posIndex >= 0 && posIndex * 3 + 2 < temp_positions.size()) {
				vertex.pos[0] = temp_positions[posIndex * 3];
				vertex.pos[1] = temp_positions[posIndex * 3 + 1];
				vertex.pos[2] = temp_positions[posIndex * 3 + 2];
			}
			else {
				vertex.pos[0] = vertex.pos[1] = vertex.pos[2] = 0.0f;
			}

			// 设置纹理坐标
			if (texIndex >= 0 && texIndex * 2 + 1 < temp_texcoords.size()) {
				vertex.uv[0] = temp_texcoords[texIndex * 2];
				vertex.uv[1] = temp_texcoords[texIndex * 2 + 1];
			}
			else {
				vertex.uv[0] = vertex.uv[1] = 0.0f;
			}

			// 设置法线
			if (normIndex >= 0 && normIndex * 3 + 2 < temp_normals.size()) {
				vertex.normal[0] = temp_normals[normIndex * 3];
				vertex.normal[1] = temp_normals[normIndex * 3 + 1];
				vertex.normal[2] = temp_normals[normIndex * 3 + 2];
			}
			else {
				vertex.normal[0] = vertex.normal[1] = 0.0f;
				vertex.normal[2] = 1.0f; // 默认法线
			}

			// 添加新顶点并记录索引
			uint32_t newIndex = static_cast<uint32_t>(vertices.size());
			vertices.push_back(vertex);
			indices.push_back(newIndex);
			obj_vertices_map[newIndex] = posIndex;
			vertexMap[vertexKey] = newIndex;
		}
	}

	return true;
}

void TextureLoading::generate_quad()
{

	//std::vector<TextureLoadingVertexStructure> vertices =
	//{
	//	{{0.3f, 0.3f, 0.0f}, {1.0f, 1.0f}, {0.0f, 0.0f, 1.0f}},
	//	{{-0.3f, 0.3f, 0.0f}, {0.0f, 1.0f}, {0.0f, 0.0f, 1.0f}},
	//	{{-0.3f, -0.3f, 0.0f}, {0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}},
	//	{{0.3f, -0.3f, 0.0f}, {1.0f, 0.0f}, {0.0f, 0.0f, 1.0f}} };

	//std::vector<uint32_t> indices = { 0, 1, 2, 2, 3, 0 };

	std::vector<TextureLoadingVertexStructure>& vertices = obj_vertices;
	std::vector<uint32_t> indices = obj_indices;

	index_count = static_cast<uint32_t>(indices.size());

	auto vertex_buffer_size = vkb::to_u32(vertices.size() * sizeof(TextureLoadingVertexStructure));
	auto index_buffer_size = vkb::to_u32(indices.size() * sizeof(uint32_t));

	// Create buffers
	// For the sake of simplicity we won't stage the vertex data to the gpu memory
	// Vertex buffer
	vertex_buffer = std::make_unique<vkb::core::BufferC>(get_device(),
		vertex_buffer_size,
		VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
		VMA_MEMORY_USAGE_CPU_TO_GPU);
	vertex_buffer->update(vertices.data(), vertex_buffer_size);

	index_buffer = std::make_unique<vkb::core::BufferC>(get_device(),
		index_buffer_size,
		VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
		VMA_MEMORY_USAGE_CPU_TO_GPU);

	index_buffer->update(indices.data(), index_buffer_size);
}

void TextureLoading::setup_descriptor_pool()
{
	// Example uses one ubo and one image sampler
	std::vector<VkDescriptorPoolSize> pool_sizes =
	{
		vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 6),
		vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 6) };

	VkDescriptorPoolCreateInfo descriptor_pool_create_info =
		vkb::initializers::descriptor_pool_create_info(
			static_cast<uint32_t>(pool_sizes.size()),
			pool_sizes.data(),
			6);

	VK_CHECK(vkCreateDescriptorPool(get_device().get_handle(), &descriptor_pool_create_info, nullptr, &descriptor_pool));
}




void TextureLoading::setup_descriptor_set_layout()
{
	std::vector<VkDescriptorSetLayoutBinding> set_layout_bindings =
	{
		// Binding 0 : Vertex shader uniform buffer
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			VK_SHADER_STAGE_VERTEX_BIT,
			0),
		// Binding 1 : Fragment shader image sampler
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
			VK_SHADER_STAGE_FRAGMENT_BIT,
			1) };

	VkDescriptorSetLayoutCreateInfo descriptor_layout =
		vkb::initializers::descriptor_set_layout_create_info(
			set_layout_bindings.data(),
			static_cast<uint32_t>(set_layout_bindings.size()));

	VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout, nullptr, &descriptor_set_layout));


	VkPipelineLayoutCreateInfo pipeline_layout_create_info =
		vkb::initializers::pipeline_layout_create_info(
			&descriptor_set_layout,
			1);

	VkPushConstantRange pushConstantRange{};
	pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT; // 只在片段着色器中使用
	pushConstantRange.offset = 0;
	pushConstantRange.size = sizeof(float); // 或者 sizeof(PushConstants)

	pipeline_layout_create_info.pushConstantRangeCount = 1;
	pipeline_layout_create_info.pPushConstantRanges = &pushConstantRange;

	VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layout));
}

void TextureLoading::setup_descriptor_set()
{
	VkDescriptorSetAllocateInfo alloc_info =
		vkb::initializers::descriptor_set_allocate_info(
			descriptor_pool,
			&descriptor_set_layout,
			1);

	VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_set));

	VkDescriptorBufferInfo buffer_descriptor = create_descriptor(*uniform_buffer_vs);

	// Setup a descriptor image info for the current texture to be used as a combined image sampler
	VkDescriptorImageInfo image_descriptor;
	image_descriptor.imageView = texture.view;                // The image's view (images are never directly accessed by the shader, but rather through views defining subresources)
	image_descriptor.sampler = texture.sampler;             // The sampler (Telling the pipeline how to sample the texture, including repeat, border, etc.)
	image_descriptor.imageLayout = texture.image_layout;        // The current layout of the image (Note: Should always fit the actual use, e.g. shader read)

	std::vector<VkWriteDescriptorSet> write_descriptor_sets =
	{
		// Binding 0 : Vertex shader uniform buffer
		vkb::initializers::write_descriptor_set(
			descriptor_set,
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			0,
			&buffer_descriptor),
		// Binding 1 : Fragment shader texture sampler
		//	Fragment shader: layout (binding = 1) uniform sampler2D samplerColor;
		vkb::initializers::write_descriptor_set(
			descriptor_set,
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,        // The descriptor set will use a combined image sampler (sampler and image could be split)
			1,                                                // Shader binding point 1
			&image_descriptor)                                // Pointer to the descriptor image for our texture
	};

	vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, NULL);
}

void TextureLoading::setup_descriptor_set_layout_bg()
{
	std::vector<VkDescriptorSetLayoutBinding> set_layout_bindings =
	{
		// Binding 1 : Fragment shader image sampler
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
			VK_SHADER_STAGE_FRAGMENT_BIT,
			0) };

	VkDescriptorSetLayoutCreateInfo descriptor_layout =
		vkb::initializers::descriptor_set_layout_create_info(
			set_layout_bindings.data(),
			static_cast<uint32_t>(set_layout_bindings.size()));

	VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout, nullptr, &descriptor_set_layout_bg));

	VkPipelineLayoutCreateInfo pipeline_layout_create_info =
		vkb::initializers::pipeline_layout_create_info(
			&descriptor_set_layout_bg,
			1);

	VkPushConstantRange pushConstantRange{};
	pushConstantRange.stageFlags =  VK_SHADER_STAGE_VERTEX_BIT; // 只在片段着色器中使用
	pushConstantRange.offset = 0;
	pushConstantRange.size = sizeof(float); // 或者 sizeof(PushConstants)

	pipeline_layout_create_info.pushConstantRangeCount = 1;
	pipeline_layout_create_info.pPushConstantRanges = &pushConstantRange;

	VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layout_bg));
}

void TextureLoading::setup_descriptor_set_bg()
{
	VkDescriptorSetAllocateInfo alloc_info =
		vkb::initializers::descriptor_set_allocate_info(
			descriptor_pool,
			&descriptor_set_layout_bg,
			1);

	VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_set_bg));



	VkDescriptorImageInfo image_descriptor;
	image_descriptor.imageView = cam_text.view;
	image_descriptor.sampler = cam_text.sampler;
	image_descriptor.imageLayout = cam_text.image_layout;

	std::vector<VkWriteDescriptorSet> write_descriptor_sets =
	{
			vkb::initializers::write_descriptor_set(
				descriptor_set_bg,
				VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
				0,
				&image_descriptor)
	};

	vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, NULL);
}


void TextureLoading::setup_descriptor_set_layout_point()
{
	std::vector<VkDescriptorSetLayoutBinding> set_layout_bindings =
	{
		// Binding 0 : Vertex shader uniform buffer
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			VK_SHADER_STAGE_VERTEX_BIT,
			0),
		// Binding 1 : Fragment shader image sampler
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
			VK_SHADER_STAGE_FRAGMENT_BIT,
			1)
	};

	VkDescriptorSetLayoutCreateInfo descriptor_layout =
		vkb::initializers::descriptor_set_layout_create_info(
			set_layout_bindings.data(),
			static_cast<uint32_t>(set_layout_bindings.size()));

	VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout, nullptr, &descriptor_set_layout_point));

	VkPipelineLayoutCreateInfo pipeline_layout_create_info =
		vkb::initializers::pipeline_layout_create_info(
			&descriptor_set_layout_point,
			1);

	VkPushConstantRange pushConstantRange{};
	pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT; // 只在片段着色器中使用
	pushConstantRange.offset = 0;
	pushConstantRange.size = sizeof(float); // 或者 sizeof(PushConstants)

	pipeline_layout_create_info.pushConstantRangeCount = 1;
	pipeline_layout_create_info.pPushConstantRanges = &pushConstantRange;

	VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layout_point));
}


void TextureLoading::setup_descriptor_set_point()
{
	VkDescriptorSetAllocateInfo alloc_info =
		vkb::initializers::descriptor_set_allocate_info(
			descriptor_pool,
			&descriptor_set_layout_point,
			1);

	VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_set_point));

	VkDescriptorBufferInfo buffer_descriptor = create_descriptor(*uniform_buffer_vs_point);


	VkDescriptorImageInfo image_descriptor;
	image_descriptor.imageView = texture_point.view;               
	image_descriptor.sampler = texture_point.sampler;            
	image_descriptor.imageLayout = texture_point.image_layout;       

	std::vector<VkWriteDescriptorSet> write_descriptor_sets =
	{
		// Binding 0 : Vertex shader uniform buffer
		vkb::initializers::write_descriptor_set(
			descriptor_set_point,
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			0,
			&buffer_descriptor),
		// Binding 1 : Fragment shader texture sampler
		//	Fragment shader: layout (binding = 1) uniform sampler2D samplerColor;
		vkb::initializers::write_descriptor_set(
			descriptor_set_point,
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,        // The descriptor set will use a combined image sampler (sampler and image could be split)
			1,                                                // Shader binding point 1
			&image_descriptor)                                // Pointer to the descriptor image for our texture
	};

	vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, NULL);
}


void TextureLoading::setup_descriptor_set_layout_point_line()
{
	std::vector<VkDescriptorSetLayoutBinding> set_layout_bindings =
	{
		// Binding 0 : Vertex shader uniform buffer
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
			0),

			// Binding 1 : Vertex shader uniform buffer
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			VK_SHADER_STAGE_FRAGMENT_BIT,
			1),

		// Binding 2 : Fragment shader image sampler
		vkb::initializers::descriptor_set_layout_binding(
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
			VK_SHADER_STAGE_FRAGMENT_BIT,
			2)
	};

	VkDescriptorSetLayoutCreateInfo descriptor_layout =
		vkb::initializers::descriptor_set_layout_create_info(
			set_layout_bindings.data(),
			static_cast<uint32_t>(set_layout_bindings.size()));

	VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &descriptor_layout, nullptr, &descriptor_set_layout_point_line));

	VkPipelineLayoutCreateInfo pipeline_layout_create_info =
		vkb::initializers::pipeline_layout_create_info(
			&descriptor_set_layout_point_line,
			1);

	VkPushConstantRange pushConstantRange{};
	pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT; // 只在片段着色器中使用
	pushConstantRange.offset = 0;
	pushConstantRange.size = sizeof(float); // 或者 sizeof(PushConstants)

	pipeline_layout_create_info.pushConstantRangeCount = 1;
	pipeline_layout_create_info.pPushConstantRanges = &pushConstantRange;

	VK_CHECK(vkCreatePipelineLayout(get_device().get_handle(), &pipeline_layout_create_info, nullptr, &pipeline_layout_point_line));
}


void TextureLoading::setup_descriptor_set_point_line()
{
	VkDescriptorSetAllocateInfo alloc_info =
		vkb::initializers::descriptor_set_allocate_info(
			descriptor_pool,
			&descriptor_set_layout_point_line,
			1);

	VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &descriptor_set_point_line));

	VkDescriptorBufferInfo buffer_descriptor = create_descriptor(*uniform_buffer_vs_point);
	VkDescriptorBufferInfo buffer_descriptorDashParameters = create_descriptor(*uniform_buffer_DashParameters);


	VkDescriptorImageInfo image_descriptor;
	image_descriptor.imageView = texture_point_line.view;
	image_descriptor.sampler = texture_point_line.sampler;
	image_descriptor.imageLayout = texture_point_line.image_layout;

	std::vector<VkWriteDescriptorSet> write_descriptor_sets =
	{
		// Binding 0 : Vertex shader uniform buffer
		vkb::initializers::write_descriptor_set(
			descriptor_set_point_line,
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			0,
			&buffer_descriptor),

		// Binding 1 : Vertex shader uniform buffer
		vkb::initializers::write_descriptor_set(
			descriptor_set_point_line,
			VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER,
			1,
			&buffer_descriptorDashParameters),
		// Binding 2 : Fragment shader texture sampler
		//	Fragment shader: layout (binding = 1) uniform sampler2D samplerColor;
		vkb::initializers::write_descriptor_set(
			descriptor_set_point_line,
			VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,        // The descriptor set will use a combined image sampler (sampler and image could be split)
			2,                                                // Shader binding point 1
			&image_descriptor)                                // Pointer to the descriptor image for our texture
	};

	vkUpdateDescriptorSets(get_device().get_handle(), static_cast<uint32_t>(write_descriptor_sets.size()), write_descriptor_sets.data(), 0, NULL);
}

// Prepare and initialize uniform buffer containing shader uniforms
void TextureLoading::prepare_uniform_buffers()
{
	// Vertex shader uniform buffer block
	uniform_buffer_vs = std::make_unique<vkb::core::BufferC>(get_device(),
		sizeof(ubo_vs),
		VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
		VMA_MEMORY_USAGE_CPU_TO_GPU);

	update_uniform_buffers();
}

void TextureLoading::update_uniform_buffers()
{
	// Vertex shader
	ubo_vs.projection = glm::perspective(glm::radians(60.0f), static_cast<float>(width) / static_cast<float>(height), 0.001f, 256.0f);
	glm::mat4 view_matrix = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f, 0.0f, zoom));

	ubo_vs.model = view_matrix * glm::translate(glm::mat4(1.0f), camera_pos);
	ubo_vs.model = glm::rotate(ubo_vs.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
	ubo_vs.model = glm::rotate(ubo_vs.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
	ubo_vs.model = glm::rotate(ubo_vs.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));

	ubo_vs.view_pos = glm::vec4(0.0f, 0.0f, -zoom, 0.0f);

	uniform_buffer_vs->convert_and_update(ubo_vs);
}


void TextureLoading::prepare_uniform_buffers_point()
{
	uniform_buffer_vs_point = std::make_unique<vkb::core::BufferC>(get_device(),
		sizeof(ubo_vs_point),
		VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
		VMA_MEMORY_USAGE_CPU_TO_GPU);
}

void TextureLoading::prepare_uniform_buffers_DashParameters()
{
	uniform_buffer_DashParameters = std::make_unique<vkb::core::BufferC>(get_device(),
		sizeof(_DashParameters),
		VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
		VMA_MEMORY_USAGE_CPU_TO_GPU);
}

void TextureLoading::update_uniform_buffers_DashParameters(float dashSize, float gapSize, float dashOffset, float uAASize, int useWorldSpace)
{
	if (!prepared)
	{
		return;
	}
	std::unique_lock<std::mutex> lock(mtx_mvp);
	_DashParameters.dashSize = dashSize;
	_DashParameters.gapSize = gapSize;
	_DashParameters.dashOffset = dashOffset;
	_DashParameters.uAASize = uAASize;
	_DashParameters.useWorldSpace = useWorldSpace;
	uniform_buffer_DashParameters->convert_and_update(_DashParameters);
}


void global_update_mvp(float fov, float x, float y, float z, float sx, float sy, float sz, float rotx, float roty, float rotz, float camx, float camy, float camz, float dashSize, float gapSize, float dashOffset, float uAASize)
{
	TextureLoading* self = TextureLoading::Get();
	if (self != nullptr)
	{
		self->update_uniform_buffers_point(fov, x, y, z, sx, sy, sz, rotx, roty, rotz, camx, camy, camz);
		self->update_uniform_buffers_DashParameters(dashSize, gapSize, dashOffset, uAASize, 0);
	}
}

void TextureLoading::update_uniform_buffers_point(float fov, float x, float y, float z, float sx, float sy, float sz, float rotx, float roty, float rotz, float camx, float camy, float camz)
{
	if (!prepared)
	{
		return;
	}
	std::unique_lock<std::mutex> lock(mtx_mvp);
	ubo_vs_point.projection = glm::perspective(glm::radians(fov), static_cast<float>(width) / static_cast<float>(height), 0.001f, 256.0f);

	//glm::vec3 cameraPos = glm::vec3(camx, camy, camz);
	//glm::vec3 cameraTarget = glm::vec3(0, 0, 0);
	//glm::vec3 cameraUp = glm::vec3(0.0f, 1.0f, 0.0f);
	//ubo_vs_point.view = glm::lookAt(cameraPos, cameraTarget, cameraUp);

	ubo_vs_point.view = glm::translate(glm::mat4(1.0f), glm::vec3(camx, camy, camz));

	glm::mat4 model = glm::mat4(1.0f); // 单位矩阵

	// 1. 先平移
	model = glm::translate(model, glm::vec3(x, y, z));

	// 2. 然后旋转（注意顺序：通常Z->Y->X或按需求）
	model = glm::rotate(model, glm::radians(rotz), glm::vec3(0.0f, 0.0f, 1.0f)); // Z轴旋转
	model = glm::rotate(model, glm::radians(roty), glm::vec3(0.0f, 1.0f, 0.0f)); // Y轴旋转
	model = glm::rotate(model, glm::radians(rotx), glm::vec3(1.0f, 0.0f, 0.0f)); // X轴旋转

	// 3. 最后缩放
	model = glm::scale(model, glm::vec3(sx, sy, sz));
	ubo_vs_point.model = model;

	uniform_buffer_vs_point->convert_and_update(ubo_vs_point);
}


void TextureLoading::prepare_pipelines()
{
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state =
		vkb::initializers::pipeline_input_assembly_state_create_info(
			VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
			0,
			VK_FALSE);

	VkPipelineRasterizationStateCreateInfo rasterization_state =
		vkb::initializers::pipeline_rasterization_state_create_info(
			VK_POLYGON_MODE_FILL,
			VK_CULL_MODE_NONE,
			VK_FRONT_FACE_COUNTER_CLOCKWISE,
			0);

	//VkPipelineColorBlendAttachmentState blend_attachment_state =
	//	vkb::initializers::pipeline_color_blend_attachment_state(
	//		0xf,
	//		VK_FALSE);

	VkPipelineColorBlendAttachmentState colorBlendAttachment{};
	colorBlendAttachment.blendEnable = VK_TRUE;
	colorBlendAttachment.colorWriteMask =
		VK_COLOR_COMPONENT_R_BIT |
		VK_COLOR_COMPONENT_G_BIT |
		VK_COLOR_COMPONENT_B_BIT |
		VK_COLOR_COMPONENT_A_BIT;

	// 常用的Alpha混合公式
	colorBlendAttachment.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
	colorBlendAttachment.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
	colorBlendAttachment.colorBlendOp = VK_BLEND_OP_ADD;
	colorBlendAttachment.srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE;
	colorBlendAttachment.dstAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
	colorBlendAttachment.alphaBlendOp = VK_BLEND_OP_ADD;

	//VkPipelineColorBlendStateCreateInfo color_blend_state =
	//	vkb::initializers::pipeline_color_blend_state_create_info(
	//		1,
	//		&blend_attachment_state);

	VkPipelineColorBlendStateCreateInfo colorBlending{};
	colorBlending.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	colorBlending.logicOpEnable = VK_FALSE;
	colorBlending.attachmentCount = 1;
	colorBlending.pAttachments = &colorBlendAttachment;

	// Note: Using reversed depth-buffer for increased precision, so Greater depth values are kept
	VkPipelineDepthStencilStateCreateInfo depth_stencil_state =
		vkb::initializers::pipeline_depth_stencil_state_create_info(
			VK_TRUE,
			VK_TRUE,
			VK_COMPARE_OP_GREATER);

	VkPipelineViewportStateCreateInfo viewport_state =
		vkb::initializers::pipeline_viewport_state_create_info(1, 1, 0);

	VkPipelineMultisampleStateCreateInfo multisample_state =
		vkb::initializers::pipeline_multisample_state_create_info(
			VK_SAMPLE_COUNT_1_BIT,
			0);

	std::vector<VkDynamicState> dynamic_state_enables = {
		VK_DYNAMIC_STATE_VIEWPORT,
		VK_DYNAMIC_STATE_SCISSOR };

	VkPipelineDynamicStateCreateInfo dynamic_state =
		vkb::initializers::pipeline_dynamic_state_create_info(
			dynamic_state_enables.data(),
			static_cast<uint32_t>(dynamic_state_enables.size()),
			0);

	// Load shaders
	std::array<VkPipelineShaderStageCreateInfo, 2> shader_stages;

	shader_stages[0] = load_shader("texture_loading", "texture.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
	shader_stages[1] = load_shader("texture_loading", "texture.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);

	// Vertex bindings and attributes
	const std::vector<VkVertexInputBindingDescription> vertex_input_bindings = {
		vkb::initializers::vertex_input_binding_description(0, sizeof(TextureLoadingVertexStructure), VK_VERTEX_INPUT_RATE_VERTEX),
	};
	const std::vector<VkVertexInputAttributeDescription> vertex_input_attributes = {
		vkb::initializers::vertex_input_attribute_description(0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(TextureLoadingVertexStructure, pos)),
		vkb::initializers::vertex_input_attribute_description(0, 1, VK_FORMAT_R32G32_SFLOAT, offsetof(TextureLoadingVertexStructure, uv)),
		vkb::initializers::vertex_input_attribute_description(0, 2, VK_FORMAT_R32G32B32_SFLOAT, offsetof(TextureLoadingVertexStructure, normal)),
	};
	VkPipelineVertexInputStateCreateInfo vertex_input_state = vkb::initializers::pipeline_vertex_input_state_create_info();
	vertex_input_state.vertexBindingDescriptionCount = static_cast<uint32_t>(vertex_input_bindings.size());
	vertex_input_state.pVertexBindingDescriptions = vertex_input_bindings.data();
	vertex_input_state.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertex_input_attributes.size());
	vertex_input_state.pVertexAttributeDescriptions = vertex_input_attributes.data();

	VkGraphicsPipelineCreateInfo pipeline_create_info =
		vkb::initializers::pipeline_create_info(
			pipeline_layout,
			render_pass,
			0);

	pipeline_create_info.pVertexInputState = &vertex_input_state;
	pipeline_create_info.pInputAssemblyState = &input_assembly_state;
	pipeline_create_info.pRasterizationState = &rasterization_state;
	pipeline_create_info.pColorBlendState = &colorBlending;  //&color_blend_state;
	pipeline_create_info.pMultisampleState = &multisample_state;
	pipeline_create_info.pViewportState = &viewport_state;
	pipeline_create_info.pDepthStencilState = &depth_stencil_state;
	pipeline_create_info.pDynamicState = &dynamic_state;
	pipeline_create_info.stageCount = static_cast<uint32_t>(shader_stages.size());
	pipeline_create_info.pStages = shader_stages.data();

	VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.solid));
}

void TextureLoading::prepare_pipeline_bg()
{
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state =
		vkb::initializers::pipeline_input_assembly_state_create_info(
			VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST,
			0,
			VK_FALSE);

	VkPipelineRasterizationStateCreateInfo rasterization_state =
		vkb::initializers::pipeline_rasterization_state_create_info(
			VK_POLYGON_MODE_FILL,
			VK_CULL_MODE_NONE,
			VK_FRONT_FACE_COUNTER_CLOCKWISE,
			0);

	VkPipelineColorBlendAttachmentState blend_attachment_state =
		vkb::initializers::pipeline_color_blend_attachment_state(
			0xf,
			VK_FALSE);

	VkPipelineColorBlendStateCreateInfo color_blend_state =
		vkb::initializers::pipeline_color_blend_state_create_info(
			1,
			&blend_attachment_state);

	VkPipelineDepthStencilStateCreateInfo depth_stencil_state =
		vkb::initializers::pipeline_depth_stencil_state_create_info(
			VK_FALSE,
			VK_FALSE,
			VK_COMPARE_OP_GREATER);

	VkPipelineViewportStateCreateInfo viewport_state =
		vkb::initializers::pipeline_viewport_state_create_info(1, 1, 0);

	VkPipelineMultisampleStateCreateInfo multisample_state =
		vkb::initializers::pipeline_multisample_state_create_info(
			VK_SAMPLE_COUNT_1_BIT,
			0);

	std::vector<VkDynamicState> dynamic_state_enables = {
		VK_DYNAMIC_STATE_VIEWPORT,
		VK_DYNAMIC_STATE_SCISSOR };

	VkPipelineDynamicStateCreateInfo dynamic_state =
		vkb::initializers::pipeline_dynamic_state_create_info(
			dynamic_state_enables.data(),
			static_cast<uint32_t>(dynamic_state_enables.size()),
			0);

	std::array<VkPipelineShaderStageCreateInfo, 2> shader_stages;
	shader_stages[0] = load_shader("texture_loading", "bg.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
	shader_stages[1] = load_shader("texture_loading", "bg.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);

	VkPipelineVertexInputStateCreateInfo vertex_input_state_bg = vkb::initializers::pipeline_vertex_input_state_create_info();

	VkGraphicsPipelineCreateInfo pipeline_create_info =
		vkb::initializers::pipeline_create_info(
			pipeline_layout_bg,
			render_pass,
			0);

	pipeline_create_info.pVertexInputState = &vertex_input_state_bg;
	pipeline_create_info.pInputAssemblyState = &input_assembly_state;
	pipeline_create_info.pRasterizationState = &rasterization_state;
	pipeline_create_info.pColorBlendState = &color_blend_state;
	pipeline_create_info.pMultisampleState = &multisample_state;
	pipeline_create_info.pViewportState = &viewport_state;
	pipeline_create_info.pDepthStencilState = &depth_stencil_state;
	pipeline_create_info.pDynamicState = &dynamic_state;
	pipeline_create_info.stageCount = static_cast<uint32_t>(shader_stages.size());
	pipeline_create_info.pStages = shader_stages.data();

	VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.background));
}


void TextureLoading::prepare_pipeline_point()
{

	// 顶点输入绑定描述 (告诉 Vulkan 顶点数据的格式)
	VkVertexInputBindingDescription vertex_input_binding_description{};
	vertex_input_binding_description.binding = 0; // 绑定点
	vertex_input_binding_description.stride = sizeof(PointVertex); // 每个顶点的字节大小
	vertex_input_binding_description.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;

	// 顶点输入属性描述 (告诉 Vulkan 每个属性在顶点结构中的位置)
	std::array<VkVertexInputAttributeDescription, 2> vertex_input_attributes = {
		VkVertexInputAttributeDescription{0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(PointVertex, x)}, // 位置
		VkVertexInputAttributeDescription{1, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(PointVertex, r)}  // 颜色
	};

	VkPipelineVertexInputStateCreateInfo vertex_input_state{ VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO };
	vertex_input_state.vertexBindingDescriptionCount = 1;
	vertex_input_state.pVertexBindingDescriptions = &vertex_input_binding_description;
	vertex_input_state.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertex_input_attributes.size());
	vertex_input_state.pVertexAttributeDescriptions = vertex_input_attributes.data();

	// 输入装配 (绘制点列表)
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state{ VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO };
	input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_POINT_LIST; // 关键：绘制点
	input_assembly_state.primitiveRestartEnable = VK_FALSE;

	// 光栅化
	VkPipelineRasterizationStateCreateInfo rasterization_state{ VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO };
	rasterization_state.polygonMode = VK_POLYGON_MODE_FILL;
	rasterization_state.cullMode = VK_CULL_MODE_NONE; // 通常不对点进行剔除
	rasterization_state.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
	rasterization_state.lineWidth = 1.0f; // 可以通过 VkPhysicalDeviceFeatures::wideLines 扩展来支持更宽的线

	// 视口和裁剪
	VkPipelineViewportStateCreateInfo viewport_state{ VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO };
	viewport_state.viewportCount = 1;
	viewport_state.scissorCount = 1;


	// 多重采样
	VkPipelineMultisampleStateCreateInfo multisample_state{ VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO };
	multisample_state.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;

	// 深度和模板测试 (通常对点云启用深度测试)
	VkPipelineDepthStencilStateCreateInfo depth_stencil_state{ VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO };
	depth_stencil_state.depthTestEnable = VK_FALSE;
	depth_stencil_state.depthWriteEnable = VK_FALSE;
	depth_stencil_state.depthCompareOp = VK_COMPARE_OP_ALWAYS; // 或 VK_COMPARE_OP_LESS
	depth_stencil_state.depthBoundsTestEnable = VK_FALSE;
	depth_stencil_state.stencilTestEnable = VK_FALSE;

	// 颜色混合 (点通常不需要混合)
	VkPipelineColorBlendAttachmentState blend_attachment_state{};
	blend_attachment_state.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
	blend_attachment_state.blendEnable = VK_FALSE;

	VkPipelineColorBlendStateCreateInfo color_blend_state{ VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO };
	color_blend_state.attachmentCount = 1;
	color_blend_state.pAttachments = &blend_attachment_state;

	// 动态状态 (视口和裁剪矩形将在命令缓冲区中设置)
	std::vector<VkDynamicState> dynamic_state_enables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
	VkPipelineDynamicStateCreateInfo dynamic_state{ VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO };
	dynamic_state.dynamicStateCount = static_cast<uint32_t>(dynamic_state_enables.size());
	dynamic_state.pDynamicStates = dynamic_state_enables.data();

	// 加载着色器
	std::array<VkPipelineShaderStageCreateInfo, 2> shader_stages;
	shader_stages[0] = load_shader("texture_loading", "pointcloud.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
	shader_stages[1] = load_shader("texture_loading", "pointcloud.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);

	// 创建图形管线
	VkGraphicsPipelineCreateInfo pipeline_create_info{ VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO };
	pipeline_create_info.stageCount = static_cast<uint32_t>(shader_stages.size());
	pipeline_create_info.pStages = shader_stages.data();
	pipeline_create_info.pVertexInputState = &vertex_input_state;
	pipeline_create_info.pInputAssemblyState = &input_assembly_state;
	pipeline_create_info.pViewportState = &viewport_state;
	pipeline_create_info.pRasterizationState = &rasterization_state;
	pipeline_create_info.pMultisampleState = &multisample_state;
	pipeline_create_info.pDepthStencilState = &depth_stencil_state;
	pipeline_create_info.pColorBlendState = &color_blend_state;
	pipeline_create_info.pDynamicState = &dynamic_state;
	pipeline_create_info.layout = pipeline_layout_point;
	pipeline_create_info.renderPass = render_pass; // 使用主渲染通道
	pipeline_create_info.subpass = 0; // 主子通道

	VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.point));
}


void TextureLoading::prepare_pipeline_point_line()
{

	// 顶点输入绑定描述 (告诉 Vulkan 顶点数据的格式)
	VkVertexInputBindingDescription vertex_input_binding_description{};
	vertex_input_binding_description.binding = 0; // 绑定点
	vertex_input_binding_description.stride = sizeof(LineVertex); // 每个顶点的字节大小
	vertex_input_binding_description.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;

	// 顶点输入属性描述 (告诉 Vulkan 每个属性在顶点结构中的位置)
	//std::array<VkVertexInputAttributeDescription, 2> vertex_input_attributes = {
	//	VkVertexInputAttributeDescription{0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(PointVertex, x)}, // 位置
	//	VkVertexInputAttributeDescription{1, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(PointVertex, r)}  // 颜色
	//};

	std::array<VkVertexInputAttributeDescription, 4> vertex_input_attributes{};

	vertex_input_attributes[0] = { 0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(LineVertex, position) };
	vertex_input_attributes[1] = { 1, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(LineVertex, color) };
	vertex_input_attributes[2] = { 2, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(LineVertex, lineStart) };
	vertex_input_attributes[3] = { 3, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(LineVertex, lineEnd) };

	VkPipelineVertexInputStateCreateInfo vertex_input_state{ VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO };
	vertex_input_state.vertexBindingDescriptionCount = 1;
	vertex_input_state.pVertexBindingDescriptions = &vertex_input_binding_description;
	vertex_input_state.vertexAttributeDescriptionCount = static_cast<uint32_t>(vertex_input_attributes.size());
	vertex_input_state.pVertexAttributeDescriptions = vertex_input_attributes.data();

	// 输入装配 (绘制点列表)
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state{ VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO };
	input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_LINE_LIST;
	input_assembly_state.primitiveRestartEnable = VK_FALSE;

	// 光栅化
	VkPipelineRasterizationStateCreateInfo rasterization_state{ VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO };
	rasterization_state.polygonMode = VK_POLYGON_MODE_FILL;
	rasterization_state.cullMode = VK_CULL_MODE_NONE; // 通常不对点进行剔除
	rasterization_state.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
	rasterization_state.lineWidth = 1.0f; // 可以通过 VkPhysicalDeviceFeatures::wideLines 扩展来支持更宽的线

	// 视口和裁剪
	VkPipelineViewportStateCreateInfo viewport_state{ VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO };
	viewport_state.viewportCount = 1;
	viewport_state.scissorCount = 1;


	// 多重采样
	VkPipelineMultisampleStateCreateInfo multisample_state{ VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO };
	multisample_state.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;

	// 深度和模板测试 (通常对点云启用深度测试)
	VkPipelineDepthStencilStateCreateInfo depth_stencil_state{ VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO };
	depth_stencil_state.depthTestEnable = VK_FALSE;
	depth_stencil_state.depthWriteEnable = VK_FALSE;
	depth_stencil_state.depthCompareOp = VK_COMPARE_OP_ALWAYS; // 或 VK_COMPARE_OP_LESS
	depth_stencil_state.depthBoundsTestEnable = VK_FALSE;
	depth_stencil_state.stencilTestEnable = VK_FALSE;

	// 颜色混合 (点通常不需要混合)
	VkPipelineColorBlendAttachmentState blend_attachment_state{};
	blend_attachment_state.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
	blend_attachment_state.blendEnable = VK_FALSE;

	VkPipelineColorBlendStateCreateInfo color_blend_state{ VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO };
	color_blend_state.attachmentCount = 1;
	color_blend_state.pAttachments = &blend_attachment_state;

	// 动态状态 (视口和裁剪矩形将在命令缓冲区中设置)
	std::vector<VkDynamicState> dynamic_state_enables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
	VkPipelineDynamicStateCreateInfo dynamic_state{ VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO };
	dynamic_state.dynamicStateCount = static_cast<uint32_t>(dynamic_state_enables.size());
	dynamic_state.pDynamicStates = dynamic_state_enables.data();

	// 加载着色器
	std::array<VkPipelineShaderStageCreateInfo, 2> shader_stages;
	//shader_stages[0] = load_shader("texture_loading", "point_line.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
	//shader_stages[1] = load_shader("texture_loading", "point_line.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
	shader_stages[0] = load_shader("texture_loading", "point_line.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
	shader_stages[1] = load_shader("texture_loading", "point_line.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);

	// 创建图形管线
	VkGraphicsPipelineCreateInfo pipeline_create_info{ VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO };
	pipeline_create_info.stageCount = static_cast<uint32_t>(shader_stages.size());
	pipeline_create_info.pStages = shader_stages.data();
	pipeline_create_info.pVertexInputState = &vertex_input_state;
	pipeline_create_info.pInputAssemblyState = &input_assembly_state;
	pipeline_create_info.pViewportState = &viewport_state;
	pipeline_create_info.pRasterizationState = &rasterization_state;
	pipeline_create_info.pMultisampleState = &multisample_state;
	pipeline_create_info.pDepthStencilState = &depth_stencil_state;
	pipeline_create_info.pColorBlendState = &color_blend_state;
	pipeline_create_info.pDynamicState = &dynamic_state;
	pipeline_create_info.layout = pipeline_layout_point_line;
	pipeline_create_info.renderPass = render_pass; // 使用主渲染通道
	pipeline_create_info.subpass = 0; // 主子通道

	VK_CHECK(vkCreateGraphicsPipelines(get_device().get_handle(), pipeline_cache, 1, &pipeline_create_info, nullptr, &pipelines.line));
}



bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
{
	if (!ApiVulkanSample::prepare(options))
	{
		return false;
	}

	myFloatValue = 1.5f;

	// --- 加载前景纹理 (示例) ---
	int    width = 640;
	int    height = 480;
	int    rowStride = width*4;
	auto   testImage = generateSimpleTestImage(width, height, 80);
	size_t dataSize = testImage.size();
	processWithVulkan(testImage.data(), width, height, rowStride, dataSize, texture_point);

//#ifdef _WIN32
	width = 640;
	height = 480;
	rowStride = width * 4;
	auto arrowImage = generateSimpleTestImage(width, height, 80);
	dataSize = arrowImage.size();
	processWithVulkan(arrowImage.data(), width, height, rowStride, dataSize, cam_text);
//#else
//
//	const char* filename = "face.png";
//	std::vector<unsigned char> image;
//	unsigned w, h;
//	unsigned error = lodepng::decode(image, w, h, filename, LCT_RGBA, 8);
//	processWithVulkan(image.data(), w, h, w*4, image.size(), cam_text);
//#endif

	width = 256;
	height = 256;
	rowStride = width * 4;
	auto lineImage = generateSimpleTestImage(width, height, 80);
	dataSize = lineImage.size();
	processWithVulkan(lineImage.data(), width, height, rowStride, dataSize, texture_point_line);
#ifdef _WIN32
	const char* filename_test = "assets/test_trans.png";
#else
	const char* filename_test = "/sdcard/Android/data/com.khronos.vulkan_samples/files/assets/test_trans.png";
#endif // _WIN32

	
	std::vector<unsigned char> image_test;
	unsigned w_t, h_t;
	unsigned error_t = lodepng::decode(image_test, w_t, h_t, filename_test, LCT_RGBA, 8);
	processWithVulkan(image_test.data(), w_t, h_t, w_t * 4, image_test.size(), texture);
	//load_texture();

	prepare_uniform_buffers();
	prepare_uniform_buffers_point();
	prepare_uniform_buffers_DashParameters();


	setup_descriptor_pool();

	setup_descriptor_set_layout();
	setup_descriptor_set();

	setup_descriptor_set_layout_bg();
	setup_descriptor_set_bg();


	setup_descriptor_set_layout_point_line();
	setup_descriptor_set_point_line();

	setup_descriptor_set_layout_point();
	setup_descriptor_set_point();

	prepare_pipelines();
	prepare_pipeline_bg();
	prepare_pipeline_point_line();
	prepare_pipeline_point();
	


#ifdef _WIN32
	std::ifstream file("face.json");
	std::string content((std::istreambuf_iterator<char>(file)),std::istreambuf_iterator<char>());
	nlohmann::json msg = nlohmann::json::parse(content);
	nlohmann::json rawPoint = msg["data"]["raw_point"];
	float pos[480 * 3] = { 0 };
	int pos_id = 0;
	for (size_t i = 0; i < rawPoint.size(); ++i) 
	{
		nlohmann::json p = rawPoint[i];
		int index = p["id"];
		pos[pos_id++] = p["x"]/480.f;
		pos[pos_id++] = p["y"] / 480.f;
		pos[pos_id++] = p["z"];
	}
	update_point_vertex_buffer(pos, rawPoint.size());
	//demo1(pos);
#endif


#ifdef _WIN32
	LoadOBJ("assets/DemoHead.obj", obj_vertices, obj_indices);
	LoadOBJ_test("assets/face.obj", positions_test);
#else
	LoadOBJ("/sdcard/Android/data/com.khronos.vulkan_samples/files/assets/face_with_uv.obj", obj_vertices, obj_indices);
#endif // _WIN32
	

	generate_quad();
	prepared = true;

	for (int i = 0; i < obj_vertices.size(); ++i)
	{
		int face_index = obj_vertices_map[i];
		float x = positions_test[face_index * 3 + 0];
		float y = positions_test[face_index * 3 + 1];
		float z = positions_test[face_index * 3 + 2];

		float obj_x = obj_vertices[i].pos[0];
		float obj_y = obj_vertices[i].pos[1];
		float obj_z = obj_vertices[i].pos[2];

		//cout << "index: " << i << " face_index:" << face_index << " diff_x:" << (x - obj_x) << " diff_y:" << (y - obj_y) << " diff_z:" << (z - obj_z) << endl;
		obj_vertices[i].pos[0] = x;
		obj_vertices[i].pos[1] = y;
		obj_vertices[i].pos[2] = z;
	}

	auto vertex_buffer_size = vkb::to_u32(obj_vertices.size() * sizeof(TextureLoadingVertexStructure));
	vertex_buffer->update(obj_vertices.data(), vertex_buffer_size);

	update_uniform_buffers_point(47, -0.5, -0.51, 0, 1, 1, 1, 0, 0, 0, 0, 0, -1);
	//start();
	return true;
}

//void TextureLoading::updateTexture()
//{
//	std::unique_lock<std::mutex> lock(mtx);
//	std::cout << "Working in thread: " << std::this_thread::get_id() << std::endl;
//	int    width = 640;
//	int    height = 480;
//	int    rowStride;
//	auto   testImage = generateSimpleTestImage(width, height, &rowStride);
//	size_t dataSize = testImage.size();
//	processWithVulkan(testImage.data(), width, height, rowStride, dataSize, cam_text);
//}
//
//void TextureLoading::run() {
//	std::this_thread::sleep_for(std::chrono::milliseconds(5000));
//	while (running) 
//	{
//		updateTexture();
//		std::this_thread::sleep_for(std::chrono::milliseconds(100));
//	}
//}
//
//void TextureLoading::start() {
//	running = true;
//	// 启动线程执行 run 方法
//	workerThread = std::thread(&TextureLoading::run, this);
//}
//
//void TextureLoading::stop() {
//	running = false;
//	if (workerThread.joinable()) {
//		workerThread.join();
//	}
//}

void TextureLoading::render(float delta_time)
{
	if (!prepared)
	{
		return;
	}

	draw();
}

void TextureLoading::view_changed()
{
	update_uniform_buffers();
}

void TextureLoading::on_update_ui_overlay(vkb::Drawer& drawer)
{
	if (drawer.header("Settings"))
	{
		if (drawer.slider_float("LOD bias", &ubo_vs.lod_bias, 0.0f, static_cast<float>(texture.mip_levels)))
		{
			update_uniform_buffers();
		}
	}
}

std::unique_ptr<vkb::Application> create_texture_loading()
{
	return std::make_unique<TextureLoading>();
}

TextureLoading* TextureLoading::this_instance = nullptr;

void TextureLoadProcessWithVulkan(uint8_t* data, int width, int height, int rowStride, size_t dataSize)
{
	TextureLoading::Texture& cam_tex = TextureLoading::Get()->cam_text;
	TextureLoading::Get()->processWithVulkan(data, width, height, rowStride, dataSize, cam_tex);
}


void ReceiveFacePoint(float* pos, int pointCount, int width, int height)
{
	//for (int i = 0; i < pointCount; i++) {
	//	float x = pos[i * 3];
	//	float y = pos[i * 3 + 1];
	//	float z = pos[i * 3 + 2];
	//}
    TextureLoading* self = TextureLoading::Get();
    if(self != nullptr)
    {
        TextureLoading::Get()->update_point_vertex_buffer(pos, pointCount);
		TextureLoading::Get()->update_face_vertex_buffer(pos, pointCount);
		//self->demo1(pos);
    }

}

void TextureLoading::update_face_vertex_buffer(float* pos, int pointCount)
{
	for (int i = 0; i < obj_vertices.size(); ++i)
	{
		int face_index = obj_vertices_map[i];
		float x = positions_test[face_index * 3 + 0];
		float y = positions_test[face_index * 3 + 1];
		float z = positions_test[face_index * 3 + 2];

		obj_vertices[i].pos[0] = x;
		obj_vertices[i].pos[1] = y;
		obj_vertices[i].pos[2] = z;
	}

	auto vertex_buffer_size = vkb::to_u32(obj_vertices.size() * sizeof(TextureLoadingVertexStructure));
	vertex_buffer->update(obj_vertices.data(), vertex_buffer_size);
}

void TextureLoading::processWithVulkan(uint8_t* data, int width, int height, int rowStride, size_t dataSize, Texture& out_texture)
{
	std::unique_lock<std::mutex> lock(mtx);
	VkDevice& device = get_device().get_handle();
	const VkPhysicalDevice& physicalDevice = get_device().get_gpu().get_handle();
	if (out_texture.image == VK_NULL_HANDLE)
	{
		createTexture(device, physicalDevice, width, height, out_texture);

	}

	const VkCommandPool& commandPool = get_device().get_command_pool().get_handle();
	updateTexture(device, physicalDevice, commandPool, queue, data, width, height,
		rowStride, dataSize, out_texture);
	// 如果纹理被更新，并且管线已经准备好，可能需要重建命令缓冲区
	// 这取决于你的应用逻辑。简单起见，在外部函数中处理。
}

// --- 以下函数保持不变 ---
void TextureLoading::createTexture(VkDevice device, VkPhysicalDevice physicalDevice, int width, int height, Texture& texture)
{
	texture.width = width;
	texture.height = height;
	texture.mip_levels = 1;

	VkImageCreateInfo imageInfo = {};
	imageInfo.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	imageInfo.imageType = VK_IMAGE_TYPE_2D;
	imageInfo.format = VK_FORMAT_R8G8B8A8_UNORM;// VK_FORMAT_R8G8B8A8_SRGB; //VK_FORMAT_R8G8B8A8_UNORM;
	imageInfo.extent.width = width;
	imageInfo.extent.height = height;
	imageInfo.extent.depth = 1;
	imageInfo.mipLevels = 1;
	imageInfo.arrayLayers = 1;
	imageInfo.samples = VK_SAMPLE_COUNT_1_BIT;
	imageInfo.tiling = VK_IMAGE_TILING_OPTIMAL;
	imageInfo.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
	imageInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	imageInfo.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;

	if (vkCreateImage(device, &imageInfo, nullptr, &texture.image) != VK_SUCCESS)
	{
		throw std::runtime_error("Failed to create image!");
	}

	VkMemoryRequirements memRequirements;
	vkGetImageMemoryRequirements(device, texture.image, &memRequirements);

	VkMemoryAllocateInfo allocInfo = {};
	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	allocInfo.allocationSize = memRequirements.size;
	allocInfo.memoryTypeIndex = findMemoryType(physicalDevice,
		memRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);

	if (vkAllocateMemory(device, &allocInfo, nullptr, &texture.device_memory) != VK_SUCCESS)
	{
		throw std::runtime_error("Failed to allocate image memory!");
	}

	vkBindImageMemory(device, texture.image, texture.device_memory, 0);

	VkImageViewCreateInfo viewInfo = {};
	viewInfo.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
	viewInfo.image = texture.image;
	viewInfo.viewType = VK_IMAGE_VIEW_TYPE_2D;
	viewInfo.format = VK_FORMAT_R8G8B8A8_UNORM;// VK_FORMAT_R8G8B8A8_SRGB; // VK_FORMAT_R8G8B8A8_UNORM;
	viewInfo.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	viewInfo.subresourceRange.baseMipLevel = 0;
	viewInfo.subresourceRange.levelCount = 1;
	viewInfo.subresourceRange.baseArrayLayer = 0;
	viewInfo.subresourceRange.layerCount = 1;

	if (vkCreateImageView(device, &viewInfo, nullptr, &texture.view) != VK_SUCCESS)
	{
		throw std::runtime_error("Failed to create texture image view!");
	}

	VkSamplerCreateInfo samplerInfo = {};
	samplerInfo.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
	samplerInfo.magFilter = VK_FILTER_LINEAR;
	samplerInfo.minFilter = VK_FILTER_LINEAR;
	samplerInfo.addressModeU = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
	samplerInfo.addressModeV = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
	samplerInfo.addressModeW = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
	samplerInfo.anisotropyEnable = VK_FALSE;
	samplerInfo.maxAnisotropy = 1.0f;
	samplerInfo.borderColor = VK_BORDER_COLOR_INT_OPAQUE_BLACK;
	samplerInfo.unnormalizedCoordinates = VK_FALSE;
	samplerInfo.compareEnable = VK_FALSE;
	samplerInfo.compareOp = VK_COMPARE_OP_ALWAYS;
	samplerInfo.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
	samplerInfo.mipLodBias = 0.0f;
	samplerInfo.minLod = 0.0f;
	samplerInfo.maxLod = 0.0f;

	if (vkCreateSampler(device, &samplerInfo, nullptr, &texture.sampler) != VK_SUCCESS)
	{
		throw std::runtime_error("Failed to create texture sampler!");
	}

	texture.image_layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
}

void TextureLoading::updateTexture(VkDevice device, VkPhysicalDevice physicalDevice,
	VkCommandPool commandPool, VkQueue queue,
	uint8_t* data, int width, int height,
	int rowStride, size_t dataSize, Texture& texture)
{
	VkBuffer       stagingBuffer;
	VkDeviceMemory stagingBufferMemory;

	VkBufferCreateInfo bufferInfo = {};
	bufferInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	bufferInfo.size = dataSize;
	bufferInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
	bufferInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;

	if (vkCreateBuffer(device, &bufferInfo, nullptr, &stagingBuffer) != VK_SUCCESS)
	{
		throw std::runtime_error("Failed to create staging buffer!");
	}

	VkMemoryRequirements memRequirements;
	vkGetBufferMemoryRequirements(device, stagingBuffer, &memRequirements);

	VkMemoryAllocateInfo allocInfo = {};
	allocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	allocInfo.allocationSize = memRequirements.size;
	allocInfo.memoryTypeIndex = findMemoryType(physicalDevice,
		memRequirements.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);

	if (vkAllocateMemory(device, &allocInfo, nullptr, &stagingBufferMemory) != VK_SUCCESS)
	{
		throw std::runtime_error("Failed to allocate staging buffer memory!");
	}

	vkBindBufferMemory(device, stagingBuffer, stagingBufferMemory, 0);

	void* mappedData;
	vkMapMemory(device, stagingBufferMemory, 0, dataSize, 0, &mappedData);

	if (rowStride == width * 4)
	{
		memcpy(mappedData, data, dataSize);
	}
	else
	{
		uint8_t* dst = static_cast<uint8_t*>(mappedData);
		const uint8_t* src = data;
		size_t         dstRowStride = width * 4;

		for (int y = 0; y < height; y++)
		{
			memcpy(dst, src, dstRowStride);
			dst += dstRowStride;
			src += rowStride;
		}
	}

	vkUnmapMemory(device, stagingBufferMemory);

	VkCommandBuffer commandBuffer = beginSingleTimeCommands(device, commandPool);

	transitionImageLayout(commandBuffer, texture.image,
		VK_IMAGE_LAYOUT_UNDEFINED,
		VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);

	VkBufferImageCopy region = {};
	region.bufferOffset = 0;
	region.bufferRowLength = 0;
	region.bufferImageHeight = 0;
	region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	region.imageSubresource.mipLevel = 0;
	region.imageSubresource.baseArrayLayer = 0;
	region.imageSubresource.layerCount = 1;
	region.imageOffset = { 0, 0, 0 };
	region.imageExtent = { static_cast<uint32_t>(width),
											  static_cast<uint32_t>(height), 1 };

	vkCmdCopyBufferToImage(commandBuffer, stagingBuffer, texture.image,
		VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);

	transitionImageLayout(commandBuffer, texture.image,
		VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
		VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);

	endSingleTimeCommands(device, commandPool, queue, commandBuffer);

	vkDestroyBuffer(device, stagingBuffer, nullptr);
	vkFreeMemory(device, stagingBufferMemory, nullptr);

	texture.image_layout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
}

uint32_t TextureLoading::findMemoryType(VkPhysicalDevice physicalDevice, uint32_t typeFilter,
	VkMemoryPropertyFlags properties)
{
	VkPhysicalDeviceMemoryProperties memProperties;
	vkGetPhysicalDeviceMemoryProperties(physicalDevice, &memProperties);

	for (uint32_t i = 0; i < memProperties.memoryTypeCount; i++)
	{
		if ((typeFilter & (1 << i)) &&
			(memProperties.memoryTypes[i].propertyFlags & properties) == properties)
		{
			return i;
		}
	}

	throw std::runtime_error("Failed to find suitable memory type!");
}

VkCommandBuffer TextureLoading::beginSingleTimeCommands(VkDevice device, VkCommandPool commandPool)
{
	VkCommandBufferAllocateInfo allocInfo = {};
	allocInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	allocInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
	allocInfo.commandPool = commandPool;
	allocInfo.commandBufferCount = 1;

	VkCommandBuffer commandBuffer;
	vkAllocateCommandBuffers(device, &allocInfo, &commandBuffer);

	VkCommandBufferBeginInfo beginInfo = {};
	beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;

	vkBeginCommandBuffer(commandBuffer, &beginInfo);

	return commandBuffer;
}

void TextureLoading::endSingleTimeCommands(VkDevice device, VkCommandPool commandPool,
	VkQueue queue, VkCommandBuffer commandBuffer)
{
	vkEndCommandBuffer(commandBuffer);

	VkSubmitInfo submitInfo = {};
	submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	submitInfo.commandBufferCount = 1;
	submitInfo.pCommandBuffers = &commandBuffer;

	vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
	vkQueueWaitIdle(queue);

	vkFreeCommandBuffers(device, commandPool, 1, &commandBuffer);
}

void TextureLoading::transitionImageLayout(VkCommandBuffer commandBuffer, VkImage image,
	VkImageLayout oldLayout, VkImageLayout newLayout)
{
	VkImageMemoryBarrier barrier = {};
	barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
	barrier.oldLayout = oldLayout;
	barrier.newLayout = newLayout;
	barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	barrier.image = image;
	barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	barrier.subresourceRange.baseMipLevel = 0;
	barrier.subresourceRange.levelCount = 1;
	barrier.subresourceRange.baseArrayLayer = 0;
	barrier.subresourceRange.layerCount = 1;

	VkPipelineStageFlags sourceStage;
	VkPipelineStageFlags destinationStage;

	if (oldLayout == VK_IMAGE_LAYOUT_UNDEFINED &&
		newLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL)
	{
		barrier.srcAccessMask = 0;
		barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;

		sourceStage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
		destinationStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
	}
	else if (oldLayout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL &&
		newLayout == VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL)
	{
		barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
		barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;

		sourceStage = VK_PIPELINE_STAGE_TRANSFER_BIT;
		destinationStage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
	}
	else
	{
		throw std::invalid_argument("Unsupported layout transition!");
	}

	vkCmdPipelineBarrier(commandBuffer, sourceStage, destinationStage, 0,
		0, nullptr, 0, nullptr, 1, &barrier);
}

//void TextureLoading::setup_point_descriptor_set_layout()
//{
//	// --- 修改：为点云 UBO 创建描述符集布局绑定，指向 binding 0 ---
//	VkDescriptorSetLayoutBinding ubo_layout_binding{};
//	ubo_layout_binding.binding = 0; // 与着色器中的 layout(binding = 0) 匹配
//	ubo_layout_binding.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
//	ubo_layout_binding.descriptorCount = 1;
//	ubo_layout_binding.stageFlags = VK_SHADER_STAGE_VERTEX_BIT; // 仅在顶点着色器中使用
//	ubo_layout_binding.pImmutableSamplers = nullptr;
//
//	VkDescriptorSetLayoutCreateInfo layout_info{ VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO };
//	layout_info.bindingCount = 1;
//	layout_info.pBindings = &ubo_layout_binding; // 指向我们的 UBO 绑定
//
//	VK_CHECK(vkCreateDescriptorSetLayout(get_device().get_handle(), &layout_info, nullptr, &point_descriptor_set_layout));
//	// --- 修改结束 ---
//}
//
//void TextureLoading::setup_point_descriptor_set()
//{
//	// --- 修改：分配点云描述符集 ---
//	VkDescriptorSetAllocateInfo alloc_info{ VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO };
//	alloc_info.descriptorPool = descriptor_pool; // 使用您已有的描述符池
//	alloc_info.descriptorSetCount = 1;
//	alloc_info.pSetLayouts = &point_descriptor_set_layout;
//
//	VK_CHECK(vkAllocateDescriptorSets(get_device().get_handle(), &alloc_info, &point_descriptor_set));
//	// --- 修改结束 ---
//
//	// --- 新增：更新点云描述符集，指向已有的 uniform_buffer_vs ---
//	update_point_descriptor_set(); // 调用辅助函数进行更新
//	// --- 新增结束 ---
//}




void TextureLoading::update_point_vertex_buffer(float* pos, int pointCount)
{
	std::lock_guard<std::mutex> lock(mtx_point);
	if (pointCount <= 0) {
		point_count = 0;
		return; // 没有点数据，无需更新
	}

	point_count = pointCount;

	// 1. 准备顶点数据
	std::vector<PointVertex> vertices(point_count);
	// 假设 pos 数组是 [x0,y0,z0,x1,y1,z1,...]
	// 为了可视化，这里简单地将坐标映射为颜色 (0-1范围)
	float min_x = std::numeric_limits<float>::max(), max_x = std::numeric_limits<float>::lowest();
	float min_y = std::numeric_limits<float>::max(), max_y = std::numeric_limits<float>::lowest();
	float min_z = std::numeric_limits<float>::max(), max_z = std::numeric_limits<float>::lowest();

	for (int i = 0; i < point_count; ++i) {
		float x = pos[i * 3 + 0];
		float y = pos[i * 3 + 1];
		float z = pos[i * 3 + 2];
		min_x = std::min(min_x, x); max_x = std::max(max_x, x);
		min_y = std::min(min_y, y); max_y = std::max(max_y, y);
		min_z = std::min(min_z, z); max_z = std::max(max_z, z);
	}
	float range_x = max_x - min_x;
	float range_y = max_y - min_y;
	float range_z = max_z - min_z;
	if (range_x == 0) range_x = 1.0f; // 防止除零
	if (range_y == 0) range_y = 1.0f;
	if (range_z == 0) range_z = 1.0f;

	for (int i = 0; i < point_count; ++i) {
		vertices[i].x = pos[i * 3 + 0];
		vertices[i].y = pos[i * 3 + 1];
		vertices[i].z = pos[i * 3 + 2];
		// 简单颜色映射
		vertices[i].r = (vertices[i].x - min_x) / range_x;
		vertices[i].g = (vertices[i].y - min_y) / range_y;
		vertices[i].b = (vertices[i].z - min_z) / range_z;
	}

	// 2. 更新或创建顶点缓冲区
	VkDeviceSize buffer_size = sizeof(PointVertex) * point_count;

	if (!vertex_buffer_point || vertex_buffer_point->get_size() < buffer_size) {
		// 如果缓冲区不存在或太小，则重新创建
		vertex_buffer_point.reset();
		vertex_buffer_point = std::make_unique<vkb::core::BufferC>(get_device(),
			buffer_size,
			VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
			VMA_MEMORY_USAGE_CPU_TO_GPU // CPU 可写，GPU 可读
		);
	}

	// 3. 将数据复制到缓冲区
	void* mapped_data = vertex_buffer_point->map();
	if (mapped_data) {
		memcpy(mapped_data, vertices.data(), buffer_size);
		vertex_buffer_point->unmap();
	}
	else {
		LOGE("Failed to map point vertex buffer for update.");
	}
}

int point_index = 0;
void add_point(float* src, float* dest, int index)
{
	dest[point_index * 3] = src[index * 3];
	dest[point_index * 3 + 1] = src[index * 3 + 1];
	dest[point_index * 3 + 2] = src[index * 3 + 2];
	point_index++;
}
void TextureLoading::demo1(float* pos)
{
	point_index = 0;
	//std::vector<int> pointIndex= { 233,232,231,230,229,118,36,49,209,217,188,233};
	std::vector<int> pointIndex = { 389,368,383,353,342,467,263,466,388,387,386,385,384,398,463,464,465,351,6,122,245,244,243,173,157,158,159,160,161,246,33,247,113,124,156,139,162,21,54,103,67,109,10,338,297,332,284,251,389 };
	float points[100 * 3];
	for (int i = 0; i < pointIndex.size(); ++i)
	{
		add_point(pos, points, pointIndex[i]);
	}
	std::vector<LineVertex> vertices;
	update_point_vertex_buffer_line(points, point_index, 0.9f, 0.9f, 0.9f, vertices);

	point_index = 0;
	add_point(pos, points, 9);
	add_point(pos, points, 168);
	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);

	point_index = 0;
	add_point(pos, points, 9);
	add_point(pos, points, 104);
	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);

	point_index = 0;
	add_point(pos, points, 9);
	add_point(pos, points, 108);
	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);

	point_index = 0;
	add_point(pos, points, 9);
	add_point(pos, points, 337);
	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);

	point_index = 0;
	add_point(pos, points, 9);
	add_point(pos, points, 333);
	update_point_vertex_buffer_line(points, point_index, 1, 0, 0, vertices);

	update_point_vertex_buffer_line_save(vertices);
}


void TextureLoading::update_point_vertex_buffer_line(float* pos, int count, float r, float g, float b, std::vector<LineVertex>& vertices)
{
	std::lock_guard<std::mutex> lock(mtx_point_line);
	if (count <= 0) {
		point_count_line = 0;
		return; // 没有点数据，无需更新
	}


	glm::vec3 color = { r,g,b };


	for (int i = 0; i < count - 1; ++i) 
	{

		const glm::vec3& start = {pos[i*3], pos[i * 3+1], pos[i * 3+2] };
		const glm::vec3& end = { pos[(i+1) * 3], pos[(i + 1) * 3 + 1], pos[(i + 1) * 3 + 2] };

		// 线段起点顶点
		vertices.push_back({
			start,                  // position
			color,              // color
			start,                  // lineStart
			end,                    // lineEnd
			});

		// 线段终点顶点
		vertices.push_back({
			end,                    // position
			color,          // color
			start,                  // lineStart (相同)
			end,                    // lineEnd (相同)
			});
	}

	
}

void TextureLoading::update_point_vertex_buffer_line_save(std::vector<LineVertex>& vertices)
{
	point_count_line = vertices.size();

	// 2. 更新或创建顶点缓冲区
	VkDeviceSize buffer_size = sizeof(LineVertex) * point_count_line;

	if (!vertex_buffer_point_line || vertex_buffer_point_line->get_size() < buffer_size) {
		// 如果缓冲区不存在或太小，则重新创建
		vertex_buffer_point_line.reset();
		vertex_buffer_point_line = std::make_unique<vkb::core::BufferC>(get_device(),
			buffer_size,
			VK_BUFFER_USAGE_VERTEX_BUFFER_BIT,
			VMA_MEMORY_USAGE_CPU_TO_GPU // CPU 可写，GPU 可读
		);
	}

	// 3. 将数据复制到缓冲区
	void* mapped_data = vertex_buffer_point_line->map();
	if (mapped_data) {
		memcpy(mapped_data, vertices.data(), buffer_size);
		vertex_buffer_point_line->unmap();
	}
	else {
		LOGE("Failed to map point vertex buffer for update.");
	}
}

void TextureLoading::draw_point_cloud(VkCommandBuffer command_buffer)
{
	if (point_count == 0 || !vertex_buffer_point) {
		return; // 没有点或缓冲区未准备好
	}

	vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.point);
	vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout_point, 0, 1, &descriptor_set_point, 0, nullptr);

	VkDeviceSize offsets[] = { 0 };
	vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffer_point->get(), offsets);

	vkCmdPushConstants(command_buffer, pipeline_layout_bg, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(float), &myFloatValue);
	vkCmdDraw(command_buffer, point_count, 1, 0, 0); // 绘制 point_count 个顶点
}

void TextureLoading::draw_point_cloud_line(VkCommandBuffer command_buffer)
{
	if (point_count_line == 0 || !vertex_buffer_point_line) {
		return; // 没有点或缓冲区未准备好
	}

	vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipelines.line);
	vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline_layout_point_line, 0, 1, &descriptor_set_point_line, 0, nullptr);

	VkDeviceSize offsets[] = { 0 };
	vkCmdBindVertexBuffers(command_buffer, 0, 1, vertex_buffer_point_line->get(), offsets);

	vkCmdDraw(command_buffer, point_count_line, 1, 0, 0); // 绘制 point_count 个顶点
}