画线的代码写完

samples/api/texture_loading/CMakeLists.txt

@@ -32,6 +32,8 @@ add_sample_with_tags(
         "texture_loading/glsl/bg.frag"
         "texture_loading/glsl/pointcloud.vert"
         "texture_loading/glsl/pointcloud.frag"
+        "texture_loading/glsl/point_line.vert"
+        "texture_loading/glsl/point_line.frag"
     SHADER_FILES_HLSL
         "texture_loading/hlsl/texture.vert.hlsl"
         "texture_loading/hlsl/texture.frag.hlsl")

samples/api/texture_loading/texture_loading.cpp

@@ -40,19 +40,23 @@ TextureLoading::~TextureLoading()
 		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();
@@ -580,7 +584,8 @@ void TextureLoading::build_command_buffers()
 
 		//vkCmdDrawIndexed(draw_cmd_buffers[i], index_count, 1, 0, 0, 0);
 
-		draw_point_cloud(draw_cmd_buffers[i]);
+		//draw_point_cloud(draw_cmd_buffers[i]);
+		draw_point_cloud_line(draw_cmd_buffers[i]);
 
 		//draw_ui(draw_cmd_buffers[i]);
 
@@ -658,8 +663,8 @@ 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, 4),
+		vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 6),
-		vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 4) };
+		vkb::initializers::descriptor_pool_size(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 6) };
 
 	VkDescriptorPoolCreateInfo descriptor_pool_create_info =
 		vkb::initializers::descriptor_pool_create_info(
@@ -866,6 +871,77 @@ void TextureLoading::setup_descriptor_set_point()
 	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,
+			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_line));
+
+	VkPipelineLayoutCreateInfo pipeline_layout_create_info =
+		vkb::initializers::pipeline_layout_create_info(
+			&descriptor_set_layout_point_line,
+			1);
+
+	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);
+
+
+	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,
+			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);
+}
+
 // Prepare and initialize uniform buffer containing shader uniforms
 void TextureLoading::prepare_uniform_buffers()
 {
@@ -901,8 +977,6 @@ void TextureLoading::prepare_uniform_buffers_point()
 		sizeof(ubo_vs_point),
 		VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
 		VMA_MEMORY_USAGE_CPU_TO_GPU);
-
-	update_uniform_buffers_point(60, -0.5, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 2);
 }
 
 
@@ -1208,6 +1282,95 @@ void TextureLoading::prepare_pipeline_point()
 }
 
 
+void TextureLoading::prepare_pipeline_point_line()
+{
+
+	VkVertexInputBindingDescription vertex_input_binding_description{};
+	vertex_input_binding_description.binding = 0;
+	vertex_input_binding_description.stride = sizeof(PointVertex);
+	vertex_input_binding_description.inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+	std::array<VkVertexInputAttributeDescription, 2> vertex_input_attributes = {
+		VkVertexInputAttributeDescription{0, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(PointVertex, x)},
+		VkVertexInputAttributeDescription{1, 0, VK_FORMAT_R32G32B32_SFLOAT, offsetof(PointVertex, r)}
+	};
+
+	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();
+
+
+	VkPipelineInputAssemblyStateCreateInfo input_assembly_state{ VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO };
+	input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_LINE_STRIP;
+	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);
+
+	// 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)
 {
@@ -1231,12 +1394,20 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	dataSize = arrowImage.size();
 	processWithVulkan(arrowImage.data(), width, height, rowStride, dataSize, texture_point);
 
+	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);
+
 	load_texture();
 	generate_quad();
 
 	prepare_uniform_buffers();
 	prepare_uniform_buffers_point();
 
+
 	setup_descriptor_pool();
 
 	setup_descriptor_set_layout();
@@ -1248,9 +1419,13 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	setup_descriptor_set_layout_point();
 	setup_descriptor_set_point();
 
+	setup_descriptor_set_layout_point_line();
+	setup_descriptor_set_point_line();
+
 	prepare_pipelines();
 	prepare_pipeline_bg();
 	prepare_pipeline_point();
+	prepare_pipeline_point_line();
 
 	float z = -2.0f;
 	float testPoint[] = {
@@ -1259,13 +1434,17 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 		0.1,0.1,z,
 		0.2,0.2,z,
 		0.3,0.3,z,
-		0.5,0.5,z,
+		0,0.5,z,
 		1,1,z,
 	};
 	int pointCount = sizeof(testPoint) / (3*4);
 	update_point_vertex_buffer(testPoint, pointCount);
 
+	update_point_vertex_buffer_line(testPoint, pointCount);
+	
 	prepared = true;
+
+	update_uniform_buffers_point(50, -0.5, -0.5, 0, 1, 1, 1, 0, 0, 0, 0, 0, -1);
 	//start();
 	return true;
 }
@@ -1751,6 +1930,72 @@ void TextureLoading::update_point_vertex_buffer(float* pos, int pointCount)
 	}
 }
 
+
+void TextureLoading::update_point_vertex_buffer_line(float* pos, int count)
+{
+	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
+	}
+
+	point_count_line = count;
+
+	// 1. 准备顶点数据
+	std::vector<PointVertex> vertices(point_count);
+	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_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->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) {
@@ -1766,3 +2011,18 @@ void TextureLoading::draw_point_cloud(VkCommandBuffer command_buffer)
 	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
+}
+

samples/api/texture_loading/texture_loading.h

@@ -56,6 +56,7 @@ public:
 
 	Texture texture = { 0 };
 	Texture texture_point = { 0 };
+	Texture texture_point_line = { 0 };
 	Texture cam_text = { 0 };
 
 	std::unique_ptr<vkb::core::BufferC> vertex_buffer;
@@ -65,6 +66,9 @@ public:
 	std::unique_ptr<vkb::core::BufferC> vertex_buffer_point;
 	uint32_t                            point_count = 0;
 
+	std::unique_ptr<vkb::core::BufferC> vertex_buffer_point_line;
+	uint32_t                            point_count_line = 0;
+
 	struct
 	{
 		glm::mat4 projection;
@@ -92,20 +96,24 @@ public:
 		VkPipeline solid;
 		VkPipeline background;
 		VkPipeline point;
+		VkPipeline line;
 	} pipelines;
 
 
 	VkPipelineLayout      pipeline_layout;
 	VkPipelineLayout      pipeline_layout_bg;
 	VkPipelineLayout      pipeline_layout_point;
+	VkPipelineLayout      pipeline_layout_point_line;
 
 	VkDescriptorSet       descriptor_set;
 	VkDescriptorSet       descriptor_set_bg;
 	VkDescriptorSet       descriptor_set_point;
+	VkDescriptorSet       descriptor_set_point_line;
 
 	VkDescriptorSetLayout descriptor_set_layout;
 	VkDescriptorSetLayout descriptor_set_layout_bg;
 	VkDescriptorSetLayout descriptor_set_layout_point;
+	VkDescriptorSetLayout descriptor_set_layout_point_line;
 
 	static TextureLoading* Get() {
 		return this_instance;
@@ -122,6 +130,7 @@ public:
 
 	void         draw();
 	void		 draw_point_cloud(VkCommandBuffer command_buffer);
+	void		 draw_point_cloud_line(VkCommandBuffer command_buffer);
 	void         generate_quad();
 
 	void         setup_descriptor_pool();
@@ -135,6 +144,9 @@ public:
 	void         setup_descriptor_set_layout_point();
 	void		 setup_descriptor_set_point();
 
+	void         setup_descriptor_set_layout_point_line();
+	void		 setup_descriptor_set_point_line();
+
 	void         prepare_uniform_buffers();
 	void         update_uniform_buffers();
 
@@ -145,6 +157,7 @@ public:
 	void         prepare_pipelines();
 	void		 prepare_pipeline_bg();
 	void		 prepare_pipeline_point();
+	void		 prepare_pipeline_point_line();
 
 
 	bool         prepare(const vkb::ApplicationOptions& options) override;
@@ -163,6 +176,7 @@ public:
 public:
 
 	void update_point_vertex_buffer(float* pos, int pointCount);
+	void update_point_vertex_buffer_line(float* pos, int pointCount_line);
 private:
 	std::thread workerThread;
 	bool running = false;
@@ -172,6 +186,7 @@ public:
 	//void start();
 	std::mutex mtx;
 	std::mutex mtx_point;
+	std::mutex mtx_point_line;
 	std::mutex mtx_mvp;
 	//void stop();
 	//void updateTexture();