1a00a11917
voxel_engine.cpp - changed structure, added character controls, physics almost all files are modified (including shaders) + new source directory - physics
131 lines
3.3 KiB
C++
131 lines
3.3 KiB
C++
#include "Shader.h"
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#include <exception>
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include <glm/gtc/type_ptr.hpp>
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#include <GL/glew.h>
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#include <GLFW/glfw3.h>
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Shader::Shader(unsigned int id) : id(id){
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}
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Shader::~Shader(){
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glDeleteProgram(id);
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}
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void Shader::use(){
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glUseProgram(id);
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}
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void Shader::uniformMatrix(std::string name, glm::mat4 matrix){
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GLuint transformLoc = glGetUniformLocation(id, name.c_str());
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glUniformMatrix4fv(transformLoc, 1, GL_FALSE, glm::value_ptr(matrix));
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}
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void Shader::uniform1i(std::string name, int x){
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GLuint transformLoc = glGetUniformLocation(id, name.c_str());
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glUniform1i(transformLoc, x);
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}
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void Shader::uniform1f(std::string name, float x){
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GLuint transformLoc = glGetUniformLocation(id, name.c_str());
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glUniform1f(transformLoc, x);
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}
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void Shader::uniform2f(std::string name, float x, float y){
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GLuint transformLoc = glGetUniformLocation(id, name.c_str());
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glUniform2f(transformLoc, x, y);
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}
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void Shader::uniform3f(std::string name, float x, float y, float z){
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GLuint transformLoc = glGetUniformLocation(id, name.c_str());
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glUniform3f(transformLoc, x,y,z);
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}
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Shader* load_shader(std::string vertexFile, std::string fragmentFile) {
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// Reading Files
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std::string vertexCode;
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std::string fragmentCode;
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std::ifstream vShaderFile;
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std::ifstream fShaderFile;
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vShaderFile.exceptions(std::ifstream::badbit);
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fShaderFile.exceptions(std::ifstream::badbit);
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try {
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vShaderFile.open(vertexFile);
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fShaderFile.open(fragmentFile);
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std::stringstream vShaderStream, fShaderStream;
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vShaderStream << vShaderFile.rdbuf();
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fShaderStream << fShaderFile.rdbuf();
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vShaderFile.close();
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fShaderFile.close();
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vertexCode = vShaderStream.str();
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fragmentCode = fShaderStream.str();
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}
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catch(std::ifstream::failure& e) {
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std::cerr << "ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ" << std::endl;
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return nullptr;
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}
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const GLchar* vShaderCode = vertexCode.c_str();
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const GLchar* fShaderCode = fragmentCode.c_str();
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GLuint vertex, fragment;
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GLint success;
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GLchar infoLog[512];
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// Vertex Shader
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vertex = glCreateShader(GL_VERTEX_SHADER);
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glShaderSource(vertex, 1, &vShaderCode, nullptr);
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glCompileShader(vertex);
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glGetShaderiv(vertex, GL_COMPILE_STATUS, &success);
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if (!success){
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glGetShaderInfoLog(vertex, 512, nullptr, infoLog);
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std::cerr << "SHADER::VERTEX: compilation failed" << std::endl;
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std::cerr << infoLog << std::endl;
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return nullptr;
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}
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// Fragment Shader
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fragment = glCreateShader(GL_FRAGMENT_SHADER);
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glShaderSource(fragment, 1, &fShaderCode, nullptr);
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glCompileShader(fragment);
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glGetShaderiv(fragment, GL_COMPILE_STATUS, &success);
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if (!success){
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glGetShaderInfoLog(fragment, 512, nullptr, infoLog);
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std::cerr << "SHADER::FRAGMENT: compilation failed" << std::endl;
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std::cerr << infoLog << std::endl;
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return nullptr;
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}
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// Shader Program
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GLuint id = glCreateProgram();
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glAttachShader(id, vertex);
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glAttachShader(id, fragment);
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glLinkProgram(id);
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glGetProgramiv(id, GL_LINK_STATUS, &success);
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if (!success){
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glGetProgramInfoLog(id, 512, nullptr, infoLog);
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std::cerr << "SHADER::PROGRAM: linking failed" << std::endl;
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std::cerr << infoLog << std::endl;
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glDeleteShader(vertex);
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glDeleteShader(fragment);
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return nullptr;
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}
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glDeleteShader(vertex);
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glDeleteShader(fragment);
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return new Shader(id);
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}
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