Move VAO, VBO in classes

ShaderProgram.cpp

@@ -0,0 +1,84 @@
+#include <iostream>
+#include <string>
+
+#include "ShaderProgram.h"
+
+ShaderProgram::ShaderProgram(const char* vertexShaderFilename, const char* fragmentShaderFilename) {
+    shaderProgramId = createShader(vertexShaderFilename, fragmentShaderFilename);
+}
+
+ShaderProgram::~ShaderProgram() {
+    glDeleteProgram(shaderProgramId);
+}
+
+void ShaderProgram::bind() {
+    glUseProgram(shaderProgramId);
+}
+
+void ShaderProgram::unbind() {
+    glUseProgram(0);
+}
+
+GLuint ShaderProgram::createShader(const char* vertexShaderFilename, const char* framentShaderFilename) {
+    std::string vertexShaderSource = parse(vertexShaderFilename);
+    std::string fragmentShaderSource = parse(framentShaderFilename);
+
+    GLuint program = glCreateProgram();
+    GLuint vs = compile(vertexShaderSource, GL_VERTEX_SHADER);
+    GLuint fs = compile(fragmentShaderSource, GL_FRAGMENT_SHADER);
+
+    glAttachShader(program, vs);
+    glAttachShader(program, fs);
+
+    glLinkProgram(program);
+
+    #ifdef _RELEASE
+    glDetachShader(program, vs);
+    glDetachShader(program, fs);
+
+    glDeleteShader(vs);
+    glDeleteShader(fs);
+    #endif
+
+    return program;
+}
+
+std::string ShaderProgram::parse(const char* filename) {
+    FILE* file;
+    file = fopen(filename, "rb");
+    if(!file) {
+        std::cout << "File " << filename << " not found!" << std::endl;
+        exit(-1);
+    }
+
+    std::string contents;
+    fseek(file, 0, SEEK_END);
+    size_t filesize = ftell(file);
+    rewind(file);
+    contents.resize(filesize);
+
+    fread(&contents[0], 1, filesize, file);
+    fclose(file);
+
+    return contents;
+}
+
+GLuint ShaderProgram::compile(std::string shaderSource, GLenum type) {
+    GLuint shaderId = glCreateShader(type);
+    const char* src = shaderSource.c_str();
+    glShaderSource(shaderId, 1, &src, 0);
+    glCompileShader(shaderId);
+
+    int result;
+    glGetShaderiv(shaderId, GL_COMPILE_STATUS, &result);
+    if(result != GL_TRUE) {
+        int length;
+        glGetShaderiv(shaderId, GL_INFO_LOG_LENGTH, &length);
+        char* message = new char[length];
+        glGetShaderInfoLog(shaderId, length, &length, message);
+        std::cout << "Shader compile error: " << message << std::endl;
+        delete[] message;
+        return 0;
+    }
+    return shaderId;
+}