GLuint LoadShaders(const char * vertex_file_path, const char * geometry_file_path,const char * fragment_file_path) { // Create the shaders GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER); GLuint GeometryShaderID = glCreateShader(GL_GEOMETRY_SHADER); GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER); // Read the Vertex Shader code from the file std::string VertexShaderCode; std::ifstream VertexShaderStream(vertex_file_path, std::ios::in); if(VertexShaderStream.is_open()){ std::string Line = ""; while(getline(VertexShaderStream, Line)) VertexShaderCode += "\n" + Line; VertexShaderStream.close(); }else{ printf("Impossible to open %s. Are you in the right directory ?\n", vertex_file_path); getchar(); return 0; } // Read the Geometry Shader code from the file std::string GeometryShaderCode; std::ifstream GeometryShaderStream(geometry_file_path, std::ios::in); if(GeometryShaderStream.is_open()){ std::string Line = ""; while(getline(GeometryShaderStream, Line)) GeometryShaderCode += "\n" + Line; GeometryShaderStream.close(); } // Read the Fragment Shader code from the file std::string FragmentShaderCode; std::ifstream FragmentShaderStream(fragment_file_path, std::ios::in); if(FragmentShaderStream.is_open()){ std::string Line = ""; while(getline(FragmentShaderStream, Line)) FragmentShaderCode += "\n" + Line; FragmentShaderStream.close(); } GLint Result = GL_FALSE; int InfoLogLength; // Compile Vertex Shader printf("Compiling shader : %s\n", vertex_file_path); char const * VertexSourcePointer = VertexShaderCode.c_str(); glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL); glCompileShader(VertexShaderID); // Check Vertex Shader glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &Result); glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); if ( InfoLogLength > 0 ){ std::vector<char> VertexShaderErrorMessage(InfoLogLength+1); glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]); printf("%s\n", &VertexShaderErrorMessage[0]); } // Compile Geometry Shader printf("Compiling shader : %s\n", geometry_file_path); char const * GeometrySourcePointer = GeometryShaderCode.c_str(); glShaderSource(GeometryShaderID, 1, &GeometrySourcePointer , NULL); glCompileShader(GeometryShaderID); // Check Geometry Shader glGetShaderiv(GeometryShaderID, GL_COMPILE_STATUS, &Result); glGetShaderiv(GeometryShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); if ( InfoLogLength > 0 ){ std::vector<char> GeometryShaderErrorMessage(InfoLogLength+1); glGetShaderInfoLog(GeometryShaderID, InfoLogLength, NULL, &GeometryShaderErrorMessage[0]); printf("%s\n", &GeometryShaderErrorMessage[0]); } // Compile Fragment Shader printf("Compiling shader : %s\n", fragment_file_path); char const * FragmentSourcePointer = FragmentShaderCode.c_str(); glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL); glCompileShader(FragmentShaderID); // Check Fragment Shader glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &Result); glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); if ( InfoLogLength > 0 ){ std::vector<char> FragmentShaderErrorMessage(InfoLogLength+1); glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]); printf("%s\n", &FragmentShaderErrorMessage[0]); } // Link the program printf("Linking program\n"); GLuint ProgramID = glCreateProgram(); glAttachShader(ProgramID, VertexShaderID); glAttachShader(ProgramID, GeometryShaderID); glAttachShader(ProgramID, FragmentShaderID); glLinkProgram(ProgramID); // Check the program glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result); glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength); if ( InfoLogLength > 0 ){ std::vector<char> ProgramErrorMessage(InfoLogLength+1); glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]); printf("%s\n", &ProgramErrorMessage[0]); } glDeleteShader(VertexShaderID); glDeleteShader(GeometryShaderID); glDeleteShader(FragmentShaderID); return ProgramID; }
int ShaderLoader::load(const char * vertex_file_path, const char * fragment_file_path, const char * geometry_file_path) { // Start of user code load // Crée les shaders GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER); GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER); GLuint GeometryShaderID; if(geometry_file_path != NULL) GeometryShaderID = glCreateShader(GL_GEOMETRY_SHADER_EXT); // Lit le code du vertex shader à partir du fichier std::string VertexShaderCode; std::ifstream VertexShaderStream(vertex_file_path, std::ios::in); if(VertexShaderStream.is_open()) { std::string Line = ""; while(getline(VertexShaderStream, Line)) VertexShaderCode += "\n" + Line; VertexShaderStream.close(); } // Lit le code du fragment shader à partir du fichier std::string FragmentShaderCode; std::ifstream FragmentShaderStream(fragment_file_path, std::ios::in); if(FragmentShaderStream.is_open()){ std::string Line = ""; while(getline(FragmentShaderStream, Line)) FragmentShaderCode += "\n" + Line; FragmentShaderStream.close(); } // Lit le code du geomtry shader à partir du fichier std::string GeometryShaderCode; if(geometry_file_path != NULL) { std::ifstream GeometryShaderStream(geometry_file_path, std::ios::in); if(GeometryShaderStream.is_open()) { std::string Line = ""; while(getline(GeometryShaderStream, Line)) GeometryShaderCode += "\n" + Line; GeometryShaderStream.close(); } } GLint Result = GL_FALSE; int InfoLogLength; // Compile le vertex shader printf("Compiling shader : %s\n", vertex_file_path); char const * VertexSourcePointer = VertexShaderCode.c_str(); glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL); glCompileShader(VertexShaderID); // Vérifie le vertex shader glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &Result); glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); std::vector<char> VertexShaderErrorMessage(InfoLogLength); glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]); fprintf(stdout, "%s\n", &VertexShaderErrorMessage[0]); // Compile le fragment shader printf("Compiling shader : %s\n", fragment_file_path); char const * FragmentSourcePointer = FragmentShaderCode.c_str(); glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL); glCompileShader(FragmentShaderID); // Vérifie le fragment shader glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &Result); glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); std::vector<char> FragmentShaderErrorMessage(InfoLogLength); glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]); fprintf(stdout, "%s\n", &FragmentShaderErrorMessage[0]); if(geometry_file_path != NULL) { // Compile le geometry shader printf("Compiling shader : %s\n", geometry_file_path); char const * GeometrySourcePointer = GeometryShaderCode.c_str(); glShaderSource(GeometryShaderID, 1, &GeometrySourcePointer , NULL); glCompileShader(GeometryShaderID); // Vérifie le geometry shader glGetShaderiv(GeometryShaderID, GL_COMPILE_STATUS, &Result); glGetShaderiv(GeometryShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); std::vector<char> GeometryShaderErrorMessage(InfoLogLength); glGetShaderInfoLog(GeometryShaderID, InfoLogLength, NULL, &GeometryShaderErrorMessage[0]); fprintf(stdout, "%s\n", &GeometryShaderErrorMessage[0]); } // Lit le programme fprintf(stdout, "Linking program\n"); GLuint ProgramID = glCreateProgram(); glAttachShader(ProgramID, VertexShaderID); glAttachShader(ProgramID, FragmentShaderID); if(geometry_file_path != NULL) glAttachShader(ProgramID, GeometryShaderID); glLinkProgram(ProgramID); // Vérifie le programme glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result); glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength); std::vector<char> ProgramErrorMessage( std::max(InfoLogLength, int(1)) ); glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]); fprintf(stdout, "%s\n", &ProgramErrorMessage[0]); glDeleteShader(VertexShaderID); glDeleteShader(FragmentShaderID); if(geometry_file_path != NULL) glDeleteShader(GeometryShaderID); return ProgramID; // End of user code }