完成mvp 矩阵，和shader

samples/api/texture_loading/texture_loading.cpp

@@ -594,6 +594,7 @@ void TextureLoading::draw()
 {
 	std::unique_lock<std::mutex> lock(mtx);
 	std::unique_lock<std::mutex> lock_point(mtx_point);
+	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 ---
@@ -901,18 +902,40 @@ void TextureLoading::prepare_uniform_buffers_point()
 		VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
 		VMA_MEMORY_USAGE_CPU_TO_GPU);
 
-	update_uniform_buffers_point();
+	update_uniform_buffers_point(60, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 2);
 }
 
-void TextureLoading::update_uniform_buffers_point()
-{
-	ubo_vs_point.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), camear_pos_point);
 
-	ubo_vs_point.model = view_matrix * glm::translate(glm::mat4(1.0f), face_pos_point);
-	ubo_vs_point.model = glm::rotate(ubo_vs_point.model, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
-	ubo_vs_point.model = glm::rotate(ubo_vs_point.model, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
-	ubo_vs_point.model = glm::rotate(ubo_vs_point.model, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
+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)
+{
+	TextureLoading::Get()->update_uniform_buffers_point(fov, x, y, z, sx, sy, sz, rotx, roty, rotz, camx, camy, camz);
+}
+
+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)
+{
+	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);
 }
@@ -1220,11 +1243,15 @@ bool TextureLoading::prepare(const vkb::ApplicationOptions& options)
 	prepare_pipeline_bg();
 	prepare_pipeline_point();
 
-	float z = 0.1f;
+	float z = -2.0f;
 	float testPoint[] = {
-		1,1,z,
 		0,0,z,
+		0.05,0.05,z,
+		0.1,0.1,z,
+		0.2,0.2,z,
+		0.3,0.3,z,
 		0.5,0.5,z,
+		1,1,z,
 	};
 	int pointCount = sizeof(testPoint) / (3*4);
 	update_point_vertex_buffer(testPoint, pointCount);
@@ -1281,7 +1308,6 @@ void TextureLoading::render(float delta_time)
 void TextureLoading::view_changed()
 {
 	update_uniform_buffers();
-	update_uniform_buffers_point();
 }
 
 void TextureLoading::on_update_ui_overlay(vkb::Drawer& drawer)

samples/api/texture_loading/texture_loading.h

@@ -84,8 +84,8 @@ public:
 	std::unique_ptr<vkb::core::BufferC> uniform_buffer_vs_point;
 
 
-	glm::vec3 camear_pos_point = {0, 0, -2.f};
-	glm::vec3 face_pos_point;
+	//glm::vec3 camear_pos_point = {0, 0, -2.f};
+	//glm::vec3 face_pos_point;
 
 	struct
 	{
@@ -139,7 +139,7 @@ public:
 	void         update_uniform_buffers();
 
 	void         prepare_uniform_buffers_point();
-	void         update_uniform_buffers_point();
+	void         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);
 
 
 	void         prepare_pipelines();
@@ -172,6 +172,7 @@ public:
 	//void start();
 	std::mutex mtx;
 	std::mutex mtx_point;
+	std::mutex mtx_mvp;
 	//void stop();
 	//void updateTexture();
 };