OGLStencil深度测试 模板测试 以及 Alpha混合_VS2015

参考:

http://learnopengl-cn.readthedocs.io/zh/latest/04%20Advanced%20OpenGL/03%20Blending/

修正:    

通过绑定为0来使默认帧缓冲被激活

glBindFramebuffer(GL_FRAMEBUFFER, 0);   // 通过绑定为0来使默认帧缓冲被激活

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main.cpp

#include <string>#define GLEW_STATIC#include <GL/glew.h>#include <GLFW/glfw3.h>#include "Shader.h"#include "Camera.h"#include <glm/glm.hpp>#include <glm/gtc/matrix_transform.hpp>#include <glm/gtc/type_ptr.hpp>#include <SOIL/SOIL.h>#include <vector>#pragma comment (lib, "opengl32.lib")#pragma comment (lib, "glew32s.lib")#pragma comment (lib, "glfw3.lib") #pragma comment (lib, "glfw3dll.lib") #pragma comment (lib, "glew32mxs.lib")#pragma comment (lib, "assimp.lib")#pragma comment(lib, "SOIL.lib")GLuint screenWidth = 800, screenHeight = 600;void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);void mouse_callback(GLFWwindow* window, double xpos, double ypos);void Do_Movement();GLuint loadTexture(GLchar* path, GLboolean bAlpha = GL_FALSE);Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));GLfloat lastX = 400, lastY = 300;bool keys[1024];bool firstMouse = true;GLfloat deltaTime = 0.0f;GLfloat lastFrame = 0.0f;/** 开启模板缓冲写入。* 渲染物体，更新模板缓冲。* 关闭模板缓冲写入。* 渲染（其他）物体，这次基于模板缓冲内容丢弃特定片段。*/// ***********************************************************int main(){glfwInit();glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);GLFWwindow* window = glfwCreateWindow(screenWidth, screenHeight, "LearnOpenGL", nullptr, nullptr);glfwMakeContextCurrent(window);glfwSetKeyCallback(window, key_callback);glfwSetCursorPosCallback(window, mouse_callback);glfwSetScrollCallback(window, scroll_callback);// Options//glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);glewExperimental = GL_TRUE;glewInit();glViewport(0, 0, screenWidth, screenHeight);glEnable(GL_DEPTH_TEST);// 开启深度测试glDepthFunc(GL_LESS);glEnable(GL_STENCIL_TEST);// 开启模板测试glStencilFunc(GL_NOTEQUAL, 1, 0xFF);// 先开启模板测试，设置模板、深度测试通过或失败时才采取动作// 1 保持现有模板值, 2 若模板测试通过,深度测试失败,保持现有模板值 //3 深度与模板均通过,将模板值用 glStencilFunc函数设置的ref值替换glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);// Shader 源码Shader shader("./Shader/advanced_vertex", "./Shader/advanced_fragement");Shader shaderSingleColor("./Shader/advanced_vertex", "./Shader/single_color_fragement");// 立方体数据GLfloat cubeVertices[] = {-0.5f, -0.5f, -0.5f,  0.0f, 0.0f,0.5f, -0.5f, -0.5f,  1.0f, 0.0f,0.5f,  0.5f, -0.5f,  1.0f, 1.0f,0.5f,  0.5f, -0.5f,  1.0f, 1.0f,-0.5f,  0.5f, -0.5f,  0.0f, 1.0f,-0.5f, -0.5f, -0.5f,  0.0f, 0.0f,-0.5f, -0.5f,  0.5f,  0.0f, 0.0f,0.5f, -0.5f,  0.5f,  1.0f, 0.0f,0.5f,  0.5f,  0.5f,  1.0f, 1.0f,0.5f,  0.5f,  0.5f,  1.0f, 1.0f,-0.5f,  0.5f,  0.5f,  0.0f, 1.0f,-0.5f, -0.5f,  0.5f,  0.0f, 0.0f,-0.5f,  0.5f,  0.5f,  1.0f, 0.0f,-0.5f,  0.5f, -0.5f,  1.0f, 1.0f,-0.5f, -0.5f, -0.5f,  0.0f, 1.0f,-0.5f, -0.5f, -0.5f,  0.0f, 1.0f,-0.5f, -0.5f,  0.5f,  0.0f, 0.0f,-0.5f,  0.5f,  0.5f,  1.0f, 0.0f,0.5f,  0.5f,  0.5f,  1.0f, 0.0f,0.5f,  0.5f, -0.5f,  1.0f, 1.0f,0.5f, -0.5f, -0.5f,  0.0f, 1.0f,0.5f, -0.5f, -0.5f,  0.0f, 1.0f,0.5f, -0.5f,  0.5f,  0.0f, 0.0f,0.5f,  0.5f,  0.5f,  1.0f, 0.0f,-0.5f, -0.5f, -0.5f,  0.0f, 1.0f,0.5f, -0.5f, -0.5f,  1.0f, 1.0f,0.5f, -0.5f,  0.5f,  1.0f, 0.0f,0.5f, -0.5f,  0.5f,  1.0f, 0.0f,-0.5f, -0.5f,  0.5f,  0.0f, 0.0f,-0.5f, -0.5f, -0.5f,  0.0f, 1.0f,-0.5f,  0.5f, -0.5f,  0.0f, 1.0f,0.5f,  0.5f, -0.5f,  1.0f, 1.0f,0.5f,  0.5f,  0.5f,  1.0f, 0.0f,0.5f,  0.5f,  0.5f,  1.0f, 0.0f,-0.5f,  0.5f,  0.5f,  0.0f, 0.0f,-0.5f,  0.5f, -0.5f,  0.0f, 1.0f};// 草地数据GLfloat planeVertices[] = {5.0f,  -0.5f,  5.0f,  2.0f, 0.0f,-5.0f, -0.5f,  5.0f,  0.0f, 0.0f,-5.0f, -0.5f, -5.0f,  0.0f, 2.0f,5.0f,  -0.5f,  5.0f,  2.0f, 0.0f,-5.0f, -0.5f, -5.0f,  0.0f, 2.0f,5.0f,  -0.5f, -5.0f,  2.0f, 2.0f};// 草的纹理GLfloat grassVertices[] = {0.0f,  0.5f,  0.0f,  0.0f,  0.0f,0.0f, -0.5f,  0.0f,  0.0f,  1.0f,1.0f, -0.5f,  0.0f,  1.0f,  1.0f,0.0f,  0.5f,  0.0f,  0.0f,  0.0f,1.0f, -0.5f,  0.0f,  1.0f,  1.0f,1.0f,  0.5f,  0.0f,  1.0f,  0.0f};// 草的位置std::vector<glm::vec3> grassPos;grassPos.push_back(glm::vec3(-1.5f, 0.0f, -0.48f));grassPos.push_back(glm::vec3(1.5f, 0.0f, 0.51f));grassPos.push_back(glm::vec3(0.0f, 0.0f, 0.7f));grassPos.push_back(glm::vec3(-0.3f, 0.0f, -2.3f));grassPos.push_back(glm::vec3(0.5f, 0.0f, -0.6f));// 立方体GLuint cubeVAO, cubeVBO;glGenVertexArrays(1, &cubeVAO);glBindVertexArray(cubeVAO);glGenBuffers(1, &cubeVBO);glBindBuffer(GL_ARRAY_BUFFER, cubeVBO);glBufferData(GL_ARRAY_BUFFER, sizeof(cubeVertices), &cubeVertices, GL_STATIC_DRAW);glEnableVertexAttribArray(0);glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)0);glEnableVertexAttribArray(1);glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));glBindVertexArray(0);// 草地GLuint planeVAO, planeVBO;glGenVertexArrays(1, &planeVAO);glGenBuffers(1, &planeVBO);glBindVertexArray(planeVAO);glBindBuffer(GL_ARRAY_BUFFER, planeVBO);glBufferData(GL_ARRAY_BUFFER, sizeof(planeVertices), &planeVertices, GL_STATIC_DRAW);glEnableVertexAttribArray(0);glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)0);glEnableVertexAttribArray(1);glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));glBindVertexArray(0);// 草GLuint grassVAO, grassVBO;glGenVertexArrays(1, &grassVAO);glBindVertexArray(grassVAO);glGenBuffers(1, &grassVBO);glBindBuffer(GL_ARRAY_BUFFER, grassVBO);glBufferData(GL_ARRAY_BUFFER, sizeof(grassVertices), &grassVertices, GL_STATIC_DRAW);glEnableVertexAttribArray(0);glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)0);glEnableVertexAttribArray(1);glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));glBindVertexArray(0);// 纹理IDGLuint cubeTexture = loadTexture("./Img/a.jpg");GLuint floorTexture = loadTexture("./Img/b.jpg");GLuint grassTexture = loadTexture("./Img/grass.png", GL_TRUE);while (!glfwWindowShouldClose(window)){GLfloat currentFrame = glfwGetTime();deltaTime = currentFrame - lastFrame;lastFrame = currentFrame;glfwPollEvents();Do_Movement();glClearColor(0.1f, 0.1f, 0.41f, 1.0f);// 偏蓝色背景 当天空glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);// 视图设置glm::mat4 model;glm::mat4 view = camera.GetViewMatrix();glm::mat4 projection = glm::perspective(camera.Zoom, (float)screenWidth / (float)screenHeight, 0.1f, 100.0f);shaderSingleColor.useShaderPrograme();glUniformMatrix4fv(glGetUniformLocation(shaderSingleColor.getPrograme(), "view"), 1, GL_FALSE, glm::value_ptr(view));glUniformMatrix4fv(glGetUniformLocation(shaderSingleColor.getPrograme(), "projection"), 1, GL_FALSE, glm::value_ptr(projection));shader.useShaderPrograme();glUniformMatrix4fv(glGetUniformLocation(shader.getPrograme(), "view"), 1, GL_FALSE, glm::value_ptr(view));glUniformMatrix4fv(glGetUniformLocation(shader.getPrograme(), "projection"), 1, GL_FALSE, glm::value_ptr(projection));// 绘制草地  此时模板缓冲区不可写glStencilMask(0x00);// 位遮罩0x00，所有写入深度缓冲最后都是0 // 0x00 == 0b00000000 == 0 //此时，模板值与它进行按位与运算结果是0，模板缓冲不可写glBindVertexArray(grassVAO);glBindTexture(GL_TEXTURE_2D, grassTexture);for (GLuint i = 0; i < grassPos.size(); i++){model = glm::mat4();model = glm::translate(model, grassPos[i]);glUniformMatrix4fv(glGetUniformLocation(shader.getPrograme(), "model"), 1, GL_FALSE, glm::value_ptr(model));glDrawArrays(GL_TRIANGLES, 0, 6);}glBindVertexArray(0);glBindVertexArray(planeVAO);glBindTexture(GL_TEXTURE_2D, floorTexture);model = glm::mat4();glUniformMatrix4fv(glGetUniformLocation(shader.getPrograme(), "model"), 1, GL_FALSE, glm::value_ptr(model));glDrawArrays(GL_TRIANGLES, 0, 6);glBindVertexArray(0);// 模板缓冲先清空模板缓冲设置所有片段的模板值为0，然后开启矩形片段用1填充// 所有片段都要写入模板缓冲    在绘制物体前，把模板方程设置为GL_ALWAYS，用1更新物体将被渲染的片段。glStencilFunc(GL_ALWAYS, 1, 0xFF);// 模板缓冲区可写// 位遮罩模板值进行按位与(AND)运算决定缓冲是否可写, //此时，模板值与它进行按位与运算结果是模板值，模板缓冲可写glStencilMask(0xFF);// 绘制两个立方体 写入模板缓冲 绘制之处，模板缓冲更新为1glBindVertexArray(cubeVAO);glBindTexture(GL_TEXTURE_2D, cubeTexture);model = glm::translate(model, glm::vec3(-1.0f, 0.0f, -1.0f));glUniformMatrix4fv(glGetUniformLocation(shader.getPrograme(), "model"), 1, GL_FALSE, glm::value_ptr(model));glDrawArrays(GL_TRIANGLES, 0, 36);model = glm::mat4();model = glm::translate(model, glm::vec3(2.0f, 0.0f, 0.0f));glUniformMatrix4fv(glGetUniformLocation(shader.getPrograme(), "model"), 1, GL_FALSE, glm::value_ptr(model));glDrawArrays(GL_TRIANGLES, 0, 36);glBindVertexArray(0);// == =============// 2nd. Render pass, now draw slightly scaled versions of the objects, this time disabling stencil writing.// Because stencil buffer is now filled with several 1s. The parts of the buffer that are 1 are now not drawn, thus only drawing // the objects' size differences, making it look like borders.glStencilFunc(GL_NOTEQUAL, 1, 0xFF);// 只绘制前面绘制的箱子外围的那部分// 关闭模板写入glStencilMask(0x00);// 关闭深度测试glDisable(GL_DEPTH_TEST);shaderSingleColor.useShaderPrograme();GLfloat scale = 1.02;// 放大// 渲染物体，更新模板缓冲// 使用一个不同的片段着色器用来输出一个纯颜色。glBindVertexArray(cubeVAO);glBindTexture(GL_TEXTURE_2D, cubeTexture);model = glm::mat4();model = glm::translate(model, glm::vec3(-1.0f, 0.0f, -1.0f));model = glm::scale(model, glm::vec3(scale, scale, scale));glUniformMatrix4fv(glGetUniformLocation(shaderSingleColor.getPrograme(), "model"), 1, GL_FALSE, glm::value_ptr(model));glDrawArrays(GL_TRIANGLES, 0, 36);model = glm::mat4();model = glm::translate(model, glm::vec3(2.0f, 0.0f, 0.0f));model = glm::scale(model, glm::vec3(scale, scale, scale));glUniformMatrix4fv(glGetUniformLocation(shaderSingleColor.getPrograme(), "model"), 1, GL_FALSE, glm::value_ptr(model));glDrawArrays(GL_TRIANGLES, 0, 36);glBindVertexArray(0);// 开启模板写入和深度测试glStencilMask(0xFF);glEnable(GL_DEPTH_TEST);glfwSwapBuffers(window);}glfwTerminate();return 0;}void DrawScene(){}// 纹理数据加载GLuint loadTexture(GLchar* path, GLboolean bAlpha){GLuint textureID;glGenTextures(1, &textureID);int width, height;unsigned char* image = SOIL_load_image(path, &width, &height, 0, bAlpha?SOIL_LOAD_RGBA:SOIL_LOAD_RGB);glBindTexture(GL_TEXTURE_2D, textureID);glTexImage2D(GL_TEXTURE_2D, 0, bAlpha?GL_RGBA:GL_RGB, width, height, 0, bAlpha ? GL_RGBA : GL_RGB, GL_UNSIGNED_BYTE, image);glGenerateMipmap(GL_TEXTURE_2D);// ParametersglTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, bAlpha ? GL_CLAMP_TO_EDGE : GL_REPEAT);glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, bAlpha ? GL_CLAMP_TO_EDGE : GL_REPEAT);glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);glBindTexture(GL_TEXTURE_2D, 0);SOIL_free_image_data(image);return textureID;}void Do_Movement(){if (keys[GLFW_KEY_W])camera.ProcessKeyboard(FORWARD, deltaTime);if (keys[GLFW_KEY_S])camera.ProcessKeyboard(BACKWARD, deltaTime);if (keys[GLFW_KEY_A])camera.ProcessKeyboard(LEFT, deltaTime);if (keys[GLFW_KEY_D])camera.ProcessKeyboard(RIGHT, deltaTime);}void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode){if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)glfwSetWindowShouldClose(window, GL_TRUE);if (action == GLFW_PRESS)keys[key] = true;else if (action == GLFW_RELEASE)keys[key] = false;}void mouse_callback(GLFWwindow* window, double xpos, double ypos){if (firstMouse){lastX = xpos;lastY = ypos;firstMouse = false;}GLfloat xoffset = xpos - lastX;GLfloat yoffset = lastY - ypos;lastX = xpos;lastY = ypos;camera.ProcessMouseMovement(xoffset, yoffset);}void scroll_callback(GLFWwindow* window, double xoffset, double yoffset){camera.ProcessMouseScroll(yoffset);}

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Camera.h

//Camera.h #pragma once// Std. Includes#include <vector>// GL Includes#include <GL/glew.h>#include <glm/glm.hpp>#include <glm/gtc/matrix_transform.hpp>// 摄像机移动方向  程序中用WSAD控制enum Camera_Movement {FORWARD,BACKWARD,LEFT,RIGHT};// Default camera valuesconst GLfloat YAW = -90.0f;const GLfloat PITCH = 0.0f;const GLfloat SPEED = 3.0f;const GLfloat SENSITIVTY = 0.25f;const GLfloat ZOOM = 45.0f;class Camera{public:// Camera Attributesglm::vec3 Position;glm::vec3 Front;glm::vec3 Up;glm::vec3 Right;glm::vec3 WorldUp;// Eular AnglesGLfloat Yaw;GLfloat Pitch;// Camera optionsGLfloat MovementSpeed;GLfloat MouseSensitivity;GLfloat Zoom;// Constructor with vectorsCamera(glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f), glm::vec3 up = glm::vec3(0.0f, 1.0f, 0.0f), GLfloat yaw = YAW, GLfloat pitch = PITCH) : Front(glm::vec3(0.0f, 0.0f, -1.0f)), MovementSpeed(SPEED), MouseSensitivity(SENSITIVTY), Zoom(ZOOM){this->Position = position;this->WorldUp = up;this->Yaw = yaw;this->Pitch = pitch;this->updateCameraVectors();}// Constructor with scalar valuesCamera(GLfloat posX, GLfloat posY, GLfloat posZ, GLfloat upX, GLfloat upY, GLfloat upZ, GLfloat yaw, GLfloat pitch) : Front(glm::vec3(0.0f, 0.0f, -1.0f)), MovementSpeed(SPEED), MouseSensitivity(SENSITIVTY), Zoom(ZOOM){this->Position = glm::vec3(posX, posY, posZ);this->WorldUp = glm::vec3(upX, upY, upZ);this->Yaw = yaw;this->Pitch = pitch;this->updateCameraVectors();}// Returns the view matrix calculated using Eular Angles and the LookAt Matrixglm::mat4 GetViewMatrix(){return glm::lookAt(this->Position, this->Position + this->Front, this->Up);}// 按键处理void ProcessKeyboard(Camera_Movement direction, GLfloat deltaTime){GLfloat velocity = this->MovementSpeed * deltaTime;if (direction == FORWARD)this->Position += this->Front * velocity;if (direction == BACKWARD)this->Position -= this->Front * velocity;if (direction == LEFT)this->Position -= this->Right * velocity;if (direction == RIGHT)this->Position += this->Right * velocity;}// 鼠标移动处理void ProcessMouseMovement(GLfloat xoffset, GLfloat yoffset, GLboolean constrainPitch = true){xoffset *= this->MouseSensitivity;yoffset *= this->MouseSensitivity;this->Yaw += xoffset;this->Pitch += yoffset;// Make sure that when pitch is out of bounds, screen doesn't get flippedif (constrainPitch){if (this->Pitch > 89.0f)this->Pitch = 89.0f;if (this->Pitch < -89.0f)this->Pitch = -89.0f;}// Update Front, Right and Up Vectors using the updated Eular anglesthis->updateCameraVectors();}// Processes input received from a mouse scroll-wheel event. //Only requires input on the vertical wheel-axisvoid ProcessMouseScroll(GLfloat yoffset){if (this->Zoom >= 1.0f && this->Zoom <= 45.0f)this->Zoom -= yoffset;if (this->Zoom <= 1.0f)this->Zoom = 1.0f;if (this->Zoom >= 45.0f)this->Zoom = 45.0f;}private:// Calculates the front vector from the Camera's (updated) Eular Anglesvoid updateCameraVectors(){// Calculate the new Front vectorglm::vec3 front;front.x = cos(glm::radians(this->Yaw)) * cos(glm::radians(this->Pitch));front.y = sin(glm::radians(this->Pitch));front.z = sin(glm::radians(this->Yaw)) * cos(glm::radians(this->Pitch));this->Front = glm::normalize(front);// Also re-calculate the Right and Up vector// Normalize the vectors, because their length gets closer to 0 the more //you look up or down which results in slower movement.this->Right = glm::normalize(glm::cross(this->Front, this->WorldUp));  this->Up = glm::normalize(glm::cross(this->Right, this->Front));}};

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Shader.h

//Shader.h #pragma once#ifndef TEXTURE_SHADER_H_#define TEXTURE_SHADER_H_#include <string>#include <fstream>#include <sstream>#include <iostream>#include <gl/glew.h>#include <string>#include <fstream>#include <sstream>#include <iostream>#include <GL/glew.h>class Shader{public:Shader(const GLchar* vertexPath, const GLchar* fragmentPath);~Shader();public:void useShaderPrograme();GLuint getPrograme() {return this->m_nProgram;}private:GLuint  m_nProgram;};Shader::Shader(const GLchar* vertexPath, const GLchar* fragmentPath){std::string vertexCode;std::string fragmentCode;std::ifstream vertexShaderF;std::ifstream fragementShaderF;vertexShaderF.exceptions(std::ifstream::badbit);fragementShaderF.exceptions(std::ifstream::badbit);try{vertexShaderF.open(vertexPath);// 打开文件fragementShaderF.open(fragmentPath);std::stringstream vertexShaderStream, fragementShaderStream;vertexShaderStream << vertexShaderF.rdbuf();// 读取文件至stringstream中fragementShaderStream << fragementShaderF.rdbuf();vertexShaderF.close();fragementShaderF.close();vertexCode = vertexShaderStream.str();// 转换成string类型fragmentCode = fragementShaderStream.str();}catch (std::ifstream::failure e){std::cout << "ERROR::SHADER::FILE_NOT_SUCCESSFULLY_READ:" << std::endl;}const GLchar* pVertexCode = vertexCode.c_str();// string 转 char*const GLchar* pFragementCode = fragmentCode.c_str();GLuint nVertexShader, nFragementShader;GLint nRes = 0;GLchar chLogInfo[512] = { '\0' };// 创建顶点着色器nVertexShader = glCreateShader(GL_VERTEX_SHADER);// 将顶点着色程序的源代码字符数组绑定到顶点着色器对象glShaderSource(nVertexShader, 1, &pVertexCode, nullptr);glCompileShader(nVertexShader); // compile shader 编译着色器// 获取编译结果glGetShaderiv(nVertexShader, GL_COMPILE_STATUS, &nRes);if (!nRes){glGetShaderInfoLog(nVertexShader, 512, nullptr, chLogInfo);std::cout << "ERROR::SHADEF::VERTEX::COMPILATION_FAILED:" << chLogInfo << std::endl;}// 创建片断着色器nFragementShader = glCreateShader(GL_FRAGMENT_SHADER);// 将片段着色程序的源代码字符数组绑定到片段着色器对象glShaderSource(nFragementShader, 1, &pFragementCode, nullptr);glCompileShader(nFragementShader);glGetShaderiv(nFragementShader, GL_COMPILE_STATUS, &nRes);if (!nRes){glGetShaderInfoLog(nFragementShader, 512, nullptr, chLogInfo);std::cout << "ERROR::SHADEF::FRAGEMENT::COMPILATION_FAILED:" << chLogInfo << std::endl;}this->m_nProgram = glCreateProgram();// 创建GLSL程序glAttachShader(this->m_nProgram, nVertexShader);// 绑定shader到programglAttachShader(this->m_nProgram, nFragementShader);// glLinkProgram操作产生最后的可执行程序，它包含最后可以在硬件上执行的硬件指令glLinkProgram(this->m_nProgram);// 链接glGetProgramiv(this->m_nProgram, GL_LINK_STATUS, &nRes);if (!nRes){glGetProgramInfoLog(this->m_nProgram, 512, nullptr, chLogInfo);std::cout << "ERROR::SHADEF::FRAGEMENT::LINK_FAILED:" << chLogInfo << std::endl;}glDeleteShader(nVertexShader);glDeleteShader(nFragementShader);}Shader::~Shader(){}#include <glm/glm.hpp>#include <glm/gtc/matrix_transform.hpp>#include <glm/gtc/type_ptr.hpp>void Shader::useShaderPrograme(){glUseProgram(this->m_nProgram);// 使用porgram}#endif

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GLSL Shader 部分

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advanced_vertex

// Vertex shader:// ================#version 330 corelayout (location = 0) in vec3 position;layout (location = 1) in vec2 texCoords;out vec2 TexCoords;uniform mat4 model;uniform mat4 view;uniform mat4 projection;void main(){    gl_Position = projection * view * model * vec4(position, 1.0f);    TexCoords = texCoords;}

advanced_fragement

// Fragment shader:// ================#version 330 corein vec2 TexCoords;out vec4 color;uniform sampler2D texture1;void main(){                 //color = texture(texture1, TexCoords);vec4 texColor = texture(texture1, TexCoords);    if(texColor.a < 0.1)        discard;    color = texColor;}

single_color_fragement

// 边框颜色#version 330 corein vec2 TexCoords;out vec4 color;uniform sampler2D texture1;void main(){color = vec4(0.6, 0.18, 0.16, 1.0);}

源码: VS2015

http://download.csdn.net/detail/yulinxx/9717121