第四次编程作业-21951468张雨薇

21951468张雨薇/Project01/readme.md

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+# 第一次作业
+
+## 1. 环境配置
+
+* windows10
+* glfw3.3
+* glad
+
+## 2. 实现功能
+
+* 完成了立方体的绘制。
+* 在立方体上应用了两种texture。
+* 实现了相机控制
+
+## 3.实现成果
+
+![](results/result.gif)

21951468张雨薇/Project01/shader_m.h

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+#ifndef SHADER_H
+#define SHADER_H
+
+#include <glad/glad.h>
+#include <glm/glm.hpp>
+
+#include <string>
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+class Shader
+{
+public:
+	unsigned int ID;
+	// constructor generates the shader on the fly
+	// ------------------------------------------------------------------------
+	Shader(const char* vertexPath, const char* fragmentPath, const char* geometryPath = nullptr)
+	{
+		// 1. retrieve the vertex/fragment source code from filePath
+		std::string vertexCode;
+		std::string fragmentCode;
+		std::string geometryCode;
+		std::ifstream vShaderFile;
+		std::ifstream fShaderFile;
+		std::ifstream gShaderFile;
+		// ensure ifstream objects can throw exceptions:
+		vShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+		fShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+		gShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+		try
+		{
+			// open files
+			vShaderFile.open(vertexPath);
+			fShaderFile.open(fragmentPath);
+			std::stringstream vShaderStream, fShaderStream;
+			// read file's buffer contents into streams
+			vShaderStream << vShaderFile.rdbuf();
+			fShaderStream << fShaderFile.rdbuf();
+			// close file handlers
+			vShaderFile.close();
+			fShaderFile.close();
+			// convert stream into string
+			vertexCode = vShaderStream.str();
+			fragmentCode = fShaderStream.str();
+			// if geometry shader path is present, also load a geometry shader
+			if (geometryPath != nullptr)
+			{
+				gShaderFile.open(geometryPath);
+				std::stringstream gShaderStream;
+				gShaderStream << gShaderFile.rdbuf();
+				gShaderFile.close();
+				geometryCode = gShaderStream.str();
+			}
+		}
+		catch (std::ifstream::failure e)
+		{
+			std::cout << "ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ" << std::endl;
+		}
+		const char* vShaderCode = vertexCode.c_str();
+		const char * fShaderCode = fragmentCode.c_str();
+		// 2. compile shaders
+		unsigned int vertex, fragment;
+		// vertex shader
+		vertex = glCreateShader(GL_VERTEX_SHADER);
+		glShaderSource(vertex, 1, &vShaderCode, NULL);
+		glCompileShader(vertex);
+		checkCompileErrors(vertex, "VERTEX");
+		// fragment Shader
+		fragment = glCreateShader(GL_FRAGMENT_SHADER);
+		glShaderSource(fragment, 1, &fShaderCode, NULL);
+		glCompileShader(fragment);
+		checkCompileErrors(fragment, "FRAGMENT");
+		// if geometry shader is given, compile geometry shader
+		unsigned int geometry;
+		if (geometryPath != nullptr)
+		{
+			const char * gShaderCode = geometryCode.c_str();
+			geometry = glCreateShader(GL_GEOMETRY_SHADER);
+			glShaderSource(geometry, 1, &gShaderCode, NULL);
+			glCompileShader(geometry);
+			checkCompileErrors(geometry, "GEOMETRY");
+		}
+		// shader Program
+		ID = glCreateProgram();
+		glAttachShader(ID, vertex);
+		glAttachShader(ID, fragment);
+		if (geometryPath != nullptr)
+			glAttachShader(ID, geometry);
+		glLinkProgram(ID);
+		checkCompileErrors(ID, "PROGRAM");
+		// delete the shaders as they're linked into our program now and no longer necessery
+		glDeleteShader(vertex);
+		glDeleteShader(fragment);
+		if (geometryPath != nullptr)
+			glDeleteShader(geometry);
+
+	}
+	// activate the shader
+	// ------------------------------------------------------------------------
+	void use()
+	{
+		glUseProgram(ID);
+	}
+	// utility uniform functions
+	// ------------------------------------------------------------------------
+	void setBool(const std::string &name, bool value) const
+	{
+		glUniform1i(glGetUniformLocation(ID, name.c_str()), (int)value);
+	}
+	// ------------------------------------------------------------------------
+	void setInt(const std::string &name, int value) const
+	{
+		glUniform1i(glGetUniformLocation(ID, name.c_str()), value);
+	}
+	// ------------------------------------------------------------------------
+	void setFloat(const std::string &name, float value) const
+	{
+		glUniform1f(glGetUniformLocation(ID, name.c_str()), value);
+	}
+	// ------------------------------------------------------------------------
+	void setVec2(const std::string &name, const glm::vec2 &value) const
+	{
+		glUniform2fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+	}
+	void setVec2(const std::string &name, float x, float y) const
+	{
+		glUniform2f(glGetUniformLocation(ID, name.c_str()), x, y);
+	}
+	// ------------------------------------------------------------------------
+	void setVec3(const std::string &name, const glm::vec3 &value) const
+	{
+		glUniform3fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+	}
+	void setVec3(const std::string &name, float x, float y, float z) const
+	{
+		glUniform3f(glGetUniformLocation(ID, name.c_str()), x, y, z);
+	}
+	// ------------------------------------------------------------------------
+	void setVec4(const std::string &name, const glm::vec4 &value) const
+	{
+		glUniform4fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+	}
+	void setVec4(const std::string &name, float x, float y, float z, float w)
+	{
+		glUniform4f(glGetUniformLocation(ID, name.c_str()), x, y, z, w);
+	}
+	// ------------------------------------------------------------------------
+	void setMat2(const std::string &name, const glm::mat2 &mat) const
+	{
+		glUniformMatrix2fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+	}
+	// ------------------------------------------------------------------------
+	void setMat3(const std::string &name, const glm::mat3 &mat) const
+	{
+		glUniformMatrix3fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+	}
+	// ------------------------------------------------------------------------
+	void setMat4(const std::string &name, const glm::mat4 &mat) const
+	{
+		glUniformMatrix4fv(glGetUniformLocation(ID, name.c_str()), 1, GL_FALSE, &mat[0][0]);
+	}
+
+private:
+	// utility function for checking shader compilation/linking errors.
+	// ------------------------------------------------------------------------
+	void checkCompileErrors(GLuint shader, std::string type)
+	{
+		GLint success;
+		GLchar infoLog[1024];
+		if (type != "PROGRAM")
+		{
+			glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
+			if (!success)
+			{
+				glGetShaderInfoLog(shader, 1024, NULL, infoLog);
+				std::cout << "ERROR::SHADER_COMPILATION_ERROR of type: " << type << "\n" << infoLog << "\n -- --------------------------------------------------- -- " << std::endl;
+			}
+		}
+		else
+		{
+			glGetProgramiv(shader, GL_LINK_STATUS, &success);
+			if (!success)
+			{
+				glGetProgramInfoLog(shader, 1024, NULL, infoLog);
+				std::cout << "ERROR::PROGRAM_LINKING_ERROR of type: " << type << "\n" << infoLog << "\n -- --------------------------------------------------- -- " << std::endl;
+			}
+		}
+	}
+};
+#endif

21951468张雨薇/Project01/stb_image.cpp

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+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"