111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
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#include <glad/glad.h>
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#include <sstream>
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#include <fstream>
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#include <iostream>
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#include "Shader.h"
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Shader::Shader(): ID(0){}
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Shader::Shader(const char* vPath, const char* fPath)
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{
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std::string vCode;
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std::string fCode;
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std::ifstream vShaderFile;
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std::ifstream fShaderFile;
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vShaderFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);
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fShaderFile.exceptions (std::ifstream::failbit | std::ifstream::badbit);
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try
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{
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vShaderFile.open(vPath);
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fShaderFile.open(fPath);
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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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vCode = vShaderStream.str();
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fCode = fShaderStream.str();
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}
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catch(std::ifstream::failure& e)
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{
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std::cerr << "ERROR::SHADER::FILE_NOT_SUCCESFULLY_READ::" << e.what() << std::endl;
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std::cerr << "VPATH::" << vPath << std::endl << "FPATH::" << fPath << std::endl;
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}
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const char* vShaderCode = vCode.c_str();
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const char* fShaderCode = fCode.c_str();
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unsigned int vertex, fragment;
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int success;
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char infoLog[512];
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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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{
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glGetShaderInfoLog(vertex, 512, nullptr, infoLog);
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std::cout << "ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" << infoLog << std::endl;
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};
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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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{
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glGetShaderInfoLog(fragment, 512, nullptr, infoLog);
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std::cerr << "ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" << infoLog << std::endl;
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};
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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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{
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glGetProgramInfoLog(ID, 512, nullptr, infoLog);
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std::cerr << "ERROR::SHADER::PROGRAM::LINKING_FAILED\n" << infoLog << std::endl;
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}
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glDeleteShader(vertex);
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glDeleteShader(fragment);
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}
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Shader::~Shader(){};
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void Shader::Use()
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{
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glUseProgram(ID);
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}
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unsigned int Shader::GetID()
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{
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return ID;
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}
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void Shader::SetBool(const char* name, bool value) const
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{
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glUniform1i(glGetUniformLocation(ID, name), (int)value);
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}
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void Shader::SetInt(const char* name, int value) const
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{
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glUniform1i(glGetUniformLocation(ID, name), value);
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}
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void Shader::SetFloat(const char* name, float value) const
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{
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glUniform1f(glGetUniformLocation(ID, name), value);
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}
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void Shader::SetMat4(const char* name, glm::mat4 value) const
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{
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glUniformMatrix4fv(glGetUniformLocation(ID, name), 1, GL_FALSE, glm::value_ptr(value));
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}
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