bool Shader::rebuild()
{
errors = "";
std::string VertexShaderCode;
std::string FragmentShaderCode;
// Create the shaders
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
// Read the Vertex Shader code from the file
VertexShaderCode = "";
std::ifstream VertexShaderStream(vertFile.c_str(), std::ios::in);
if (VertexShaderStream.is_open())
{
std::string Line = "";
while (getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
}
else
{
errors = "Shader rebuild failed! Couldn't open file " + vertFile;
prn("Shader rebuild failed! Couldn't open file %s", vertFile.c_str());
return false;
}
// Read the Fragment Shader code from the file
fragBuff = FragmentShaderCode = "";
std::ifstream FragmentShaderStream(fragFile.c_str(), std::ios::in);
if (FragmentShaderStream.is_open()){
std::string Line = "";
while (getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
}
else
{
errors = "Shader rebuild failed! Couldn't open file " + fragFile;
prn("Shader rebuild failed! Couldn't open file %s", fragFile.c_str());
return false;
}
GLint result = GL_FALSE;
int InfoLogLength;
// Compile Vertex Shader
prn("Compiling shader : %s\n", vertFile.c_str());
char const * VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShaderID, 1, &VertexSourcePointer, NULL);
glCompileShader(VertexShaderID);
// Check Vertex Shader
glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &result);
if (!result) {
glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> VertexShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
prn("%s\n", &VertexShaderErrorMessage[0]);
errors = "Shader rebuild failed!\n" + std::string(&VertexShaderErrorMessage[0]);
return false;
}
// Compile Fragment Shader
prn("Compiling shader : %s\n", fragFile.c_str());
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer, NULL);
glCompileShader(FragmentShaderID);
// Check Fragment Shader
glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &result);
if (!result) {
glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> FragmentShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
prn("%s\n", &FragmentShaderErrorMessage[0]);
errors = "Shader rebuild failed!\n" + std::string(&FragmentShaderErrorMessage[0]);
return false;
}
// Link the program
prn("Linking program\n");
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
// Check the program
glGetProgramiv(ProgramID, GL_LINK_STATUS, &result);
if (!result) {
glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> ProgramErrorMessage(std::max(InfoLogLength, int(1)));
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
prn("%s\n", &ProgramErrorMessage[0]);
errors = "Shader rebuild failed!\n" + std::string(&ProgramErrorMessage[0]);
return false;
}
release();
vertBuff = VertexShaderCode;
fragBuff = FragmentShaderCode;
vertexShader = VertexShaderID;
fragmentShader = FragmentShaderID;
shaderProgram = ProgramID;
return vertexShader && fragmentShader && shaderProgram;
}
GLuint ShaderLoader::LoadShaders(string vertex_file, string fragment_file)
{
// Create the shader IDs
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
// Read the Vertex Shader code from the file
std::string VertexShaderCode;
std::ifstream VertexShaderStream(vertex_file, std::ios::in);
if(VertexShaderStream.is_open())
{
//Read the vertex shader line by line, and add the \n line ending
std::string Line = "";
while(getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
}
else
{
printf("Can't open Vertex Shader code file: %s !\n", vertex_file);
assert(false);
}
// Read the Fragment Shader code from the file
std::string FragmentShaderCode;
std::ifstream FragmentShaderStream(fragment_file, std::ios::in);
if(FragmentShaderStream.is_open())
{
//Read the fragment shader line by line, and add the \n line ending
std::string Line = "";
while(getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
}
else
{
printf("Can't open Fragment Shader code file: %s !\n", fragment_file);
assert(false);
}
//Now we compile them
GLint Result = GL_FALSE;
int InfoLogLength = 0;
//Compile Vertex Shader
printf("Compiling Vertex Shader : %s\n", vertex_file);
//get the shader text as a pointer
char const * VertexSourcePointer = VertexShaderCode.c_str();
//and pass it to OpenGL
glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL);
//then compile and save in the VertexShaderID
glCompileShader(VertexShaderID);
//check the compiled vertex shader
//write the compile status in Result
glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &Result);
//write the log length
glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
//now display the shader compilation output if any
if ( InfoLogLength > 0 )
{
std::vector<char> VertexShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
printf("Vertex Shader compilation output:\n");
printf("%s\n", &VertexShaderErrorMessage[0]);
}
//Compile Fragment Shader
printf("Compiling Fragment Shader : %s\n", fragment_file);
//get the shader text as a pointer
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
//and pass it to OpenGL
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL);
//then compile and save in the FragmentShaderID
glCompileShader(FragmentShaderID);
//check the compiled vertex shader
//write the compile status in Result
glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &Result);
//write the log length
glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
//now display the shader compilation output if any
if ( InfoLogLength > 0 )
{
std::vector<char> FragmentShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
printf("Fragment Shader compilation output:\n");
printf("%s\n", &FragmentShaderErrorMessage[0]);
}
//Both shaders are compiled, now link the program
printf("Linking program\n");
GLuint ProgramID = glCreateProgram();
//attach the compiled Vertex and Fragment shaders to the ProgramID
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
//now 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("Program Linking output:\n");
printf("%s\n", &ProgramErrorMessage[0]);
}
//we are done with the shaders, it is safe to delete them
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
return ProgramID;
}
GLuint load(const char * vertex_file_path, const char * fragment_file_path){
// Create the shaders
GLuint VertexShaderID = glCreateShader(GL_VERTEX_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();
}
// 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);
std::vector<char> VertexShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
fprintf(stdout, "%s\n", &VertexShaderErrorMessage[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);
std::vector<char> FragmentShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
fprintf(stdout, "%s\n", &FragmentShaderErrorMessage[0]);
// Link the program
fprintf(stdout, "Linking program\n");
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
// Check the program
glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> ProgramErrorMessage(max(InfoLogLength, int(1)));
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
fprintf(stdout, "%s\n", &ProgramErrorMessage[0]);
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
return ProgramID;
}
GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path){
// Create the shaders
GLuint VertexShaderID = glCreateShader(GL_VERTEX_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{
std::cout << "Failed to open " << vertex_file_path << ". Are you in the right directory?" << std::endl;
return 0;
}
// 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
// std::cout << "Compiling shader " << vertex_file_path << std::endl;
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 > 1 ){
std::vector<char> VertexShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
std::cout << &VertexShaderErrorMessage[0] << std::endl;
}
// Compile Fragment Shader
// std::cout << "Compiling shader " << fragment_file_path << std::endl;
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 > 1 ){
std::vector<char> FragmentShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
std::cout << &FragmentShaderErrorMessage[0] << std::endl;
}
// Link the program
// std::cout << "Linking program" << std::endl;
GLuint ProgramID = glCreateProgram();
if(ProgramID == 0){
std::cout << "glCreateProgram() failed! (?\?\?)" << std::endl;
}
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
// Check the program
glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
if ( InfoLogLength > 1 ){
std::vector<char> ProgramErrorMessage(InfoLogLength+1);
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
std::cout << &ProgramErrorMessage[0] << std::endl;
}
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
return ProgramID;
}
GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path){
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
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 ? Don't forget to read the FAQ !\n", vertex_file_path);
getchar();
return 0;
}
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;
char const * VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL);
glCompileShader(VertexShaderID);
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]);
}
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL);
glCompileShader(FragmentShaderID);
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]);
}
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
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(FragmentShaderID);
return ProgramID;
}
int MaterialManagerClass::loadShaders(std::string shader_name) {
int ret = 0;
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
//GLuint GeometryShaderID = glCreateShader(GL_GEOMETRY_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
std::string VertexShaderCode;
std::ifstream VertexShaderStream(shader_name+".vxshader", std::ios::in);
if(VertexShaderStream.is_open()) {
std::string Line = "";
while(getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
} else ret |= SW_NOVXSHADER;
/*std::string GeometryShaderCode;
std::ifstream GeometryShaderStream(shader_name+".gmshader", std::ios::in);
if(GeometryShaderStream.is_open()) {
std::string Line = "";
while(getline(GeometryShaderStream, Line))
GeometryShaderCode += "\n" + Line;
GeometryShaderStream.close();
} else ret |= SW_NOGMSHADER;*/
std::string FragmentShaderCode;
std::ifstream FragmentShaderStream(shader_name+".pxshader", std::ios::in);
printf("Opening shader: %s\n", (shader_name+".pxshader").c_str());
if(FragmentShaderStream.is_open()) {
std::string Line = "";
while(getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
} else ret |= SW_NOPXSHADER;
GLint Result = GL_FALSE;
int InfoLogLength;
printf("Compiling shader: %s\n", (shader_name+".vxshader").c_str());
const char * VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShaderID, 1, &VertexSourcePointer, NULL);
glCompileShader(VertexShaderID);
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]);
/*printf("Compiling shader: %s\n", (shader_name+".gmshader").c_str());
const char * GeometrySourcePointer = GeometryShaderCode.c_str();
glShaderSource(GeometryShaderID, 1, &GeometrySourcePointer, NULL);
glCompileShader(GeometryShaderID);
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]);*/
printf("Compiling shader: %s\n", (shader_name+".pxshader").c_str());
const char * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer, NULL);
glCompileShader(FragmentShaderID);
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]);
fprintf(stdout, "Linking program\n");
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
//glAttachShader(ProgramID, GeometryShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> ProgramErrorMessage( max(InfoLogLength, int(1)));
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
fprintf(stdout, "%s\n", &ProgramErrorMessage[0]);
glDeleteShader(VertexShaderID);
//glDeleteShader(GeometryShaderID);
glDeleteShader(FragmentShaderID);
fprintf(stdout, "shader ID: %d\n", ProgramID);
programs.insert(std::pair<std::string, GLuint>(shader_name, ProgramID));
return ret;
}
GLuint LoadShaders(const std::string &vertex_file_path,const std::string &fragment_file_path){
//std::cout << "load shaders" << std::endl;
// Create the shaders
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
// Read the Vertex Shader code from the file
std::string VertexShaderCode;
std::ifstream VertexShaderStream(vertex_file_path.c_str(), std::ios::in);
if (VertexShaderStream.is_open()){
std::string Line = "";
while(getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
} else {
std::cerr << "ERROR: cannot open " << vertex_file_path << std::endl;
exit(0);
}
// Read the Fragment Shader code from the file
std::string FragmentShaderCode;
std::ifstream FragmentShaderStream(fragment_file_path.c_str(), std::ios::in);
if(FragmentShaderStream.is_open()){
std::string Line = "";
while(getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
} else {
std::cerr << "ERROR: cannot open " << vertex_file_path << std::endl;
exit(0);
}
GLint Result = GL_FALSE;
int InfoLogLength;
// Compile Vertex Shader
//std::cout << "Compiling shader : " << vertex_file_path << std::endl;
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]);
std::cerr << "VERTEX SHADER ERROR: " << std::string(VertexShaderErrorMessage.begin(),
VertexShaderErrorMessage.end()) << std::endl;
}
// Compile Fragment Shader
//std::cout << "Compiling shader : " << fragment_file_path << std::endl;
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]);
std::cerr << "FRAGMENT SHADER ERROR: " << std::string(FragmentShaderErrorMessage.begin(),
FragmentShaderErrorMessage.end()) << std::endl;
}
// Link the program
//std::cout << "Linking program" << std::endl;
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
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]);
std::cerr << "SHADER PROGRAM ERROR: " << std::string(ProgramErrorMessage.begin(),
ProgramErrorMessage.end()) << std::endl;
}
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
return ProgramID;
}
GLuint LoadShaders(const char * vertex_file_path,const char * fragment_file_path){
// Создаем шейдеры
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
// Загружаем код Вершинного Шейдера из файла
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();
}
// Загружаем код Фрагментного шейдера из файла
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;
// Компилируем Вершинный шейдер
printf("Compile Vertex shader: %s\n", vertex_file_path);
char const * VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL);
glCompileShader(VertexShaderID);
// Выполняем проверку Вершинного шейдера
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]);
// Компилируем Фрагментный шейдер
printf("Compile Fragment Shader: %s\n", fragment_file_path);
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL);
glCompileShader(FragmentShaderID);
// Проверяем Фрагментный шейдер
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]);
// Создаем шейдерную программу и привязываем шейдеры к ней
fprintf(stdout, "Create shader program \n");
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
// Проверяем шейдерную программу
glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result);
glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> ProgramErrorMessage(max(InfoLogLength, int(1)) );
glGetProgramInfoLog(ProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
fprintf(stdout, "%s\n", &ProgramErrorMessage[0]);
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
return ProgramID;
}
/* 载入着色器(shader)文件并编译；创建着色器程序并链接 */
void CShaderProgram::loadShaders(const char* vertexFilePath,const char* fragmentFilePath)
{
// 创建着色器
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
// 读取顶点（Vertex）着色器文件
string VertexShaderCode;
ifstream VertexShaderStream(vertexFilePath, ios::in);
if (VertexShaderStream.is_open()) {
string Line = "";
while (getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
} else {
fprintf(stderr, "Can not open vertex shader file: %s \n", vertexFilePath);
exit(1);
}
// 读取片段（Fragment）着色器文件
string FragmentShaderCode;
ifstream FragmentShaderStream(fragmentFilePath, ios::in);
if (FragmentShaderStream.is_open()) {
string Line = "";
while (getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
} else {
fprintf(stderr, "Can not open fragment shader file: %s \n", fragmentFilePath);
exit(1);
}
// 编译顶点着色器
printf("Compiling Vertex Shader: %s\n", vertexFilePath);
char const * VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShaderID, 1, &VertexSourcePointer , NULL);
glCompileShader(VertexShaderID);
// 检查顶点着色器编译情况
glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &iStatus);
if (!iStatus) {
glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
vector<char> VertexShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
fprintf(stderr, "Vertex Shader compiling error: %s\n", &VertexShaderErrorMessage[0]);
exit(1);
}
// 编译片段着色器
printf("Compiling Fragment Shader: %s\n", fragmentFilePath);
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , NULL);
glCompileShader(FragmentShaderID);
// 检查片段着色器编译情况
glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &iStatus);
if (!iStatus){
glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
vector<char> FragmentShaderErrorMessage(InfoLogLength+1);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
fprintf(stderr, "Fragment Shader compiling error: %s\n", &FragmentShaderErrorMessage[0]);
exit(1);
}
// 创建并链接着色器程序
printf("Linking shader program\n");
m_uiProgramID = glCreateProgram();
glAttachShader(m_uiProgramID, VertexShaderID);
glAttachShader(m_uiProgramID, FragmentShaderID);
glLinkProgram(m_uiProgramID);
// 检查着色器程序链接状况
glGetProgramiv(m_uiProgramID, GL_LINK_STATUS, &iStatus);
if (!iStatus){
glGetProgramiv(m_uiProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength);
vector<char> ProgramErrorMessage(InfoLogLength+1);
glGetProgramInfoLog(m_uiProgramID, InfoLogLength, NULL, &ProgramErrorMessage[0]);
fprintf(stderr, "shader program linking error: %s\n", &ProgramErrorMessage[0]);
}
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
}
GLuint LoadShaders(const char * vertex_file_path, const char * fragment_file_path)
{
// Create the shaders
GLuint VertexShaderID = glCreateShader(GL_VERTEX_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() == true)
{
std::string Line = "";
while(getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
}
else
{
CA_ERROR("GLShader::LoadShaders() : Can't open %s.\n", vertex_file_path);
return 0;
}
// Read the Fragment Shader code from the file
std::string FragmentShaderCode;
std::ifstream FragmentShaderStream(fragment_file_path, std::ios::in);
if(FragmentShaderStream.is_open() == true)
{
std::string Line = "";
while(getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
}
else
{
CA_ERROR("Impossible to open %s.\n", fragment_file_path);
return 0;
}
GLint Result = GL_FALSE;
int InfoLGLength;
// Compile Vertex Shader
CA_TRACE("Compiling shader : %d (%s)\n", VertexShaderID, vertex_file_path);
char const * VertexSourcePointer = VertexShaderCode.c_str();
// (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length);
GLCheck(glShaderSource(VertexShaderID, 1, &VertexSourcePointer, nullptr));
GLCheck(glCompileShader(VertexShaderID));
// Check Vertex Shader
GLCheck(glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &Result));
GLCheck(glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLGLength));
if (Result == GL_FALSE)
{
std::vector<char> VertexShaderErrorMessage(InfoLGLength+1);
glGetShaderInfoLog(VertexShaderID, InfoLGLength, nullptr, &VertexShaderErrorMessage[0]);
CA_ERROR("Compile vertex shader error %s\n", &VertexShaderErrorMessage[0]);
}
// Compile Fragment Shader
CA_TRACE("Compiling shader : %d (%s)\n", FragmentShaderID, fragment_file_path);
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
GLCheck(glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , nullptr));
GLCheck(glCompileShader(FragmentShaderID));
// Check Fragment Shader
GLCheck(glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &Result));
GLCheck(glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLGLength));
if (Result == GL_FALSE)
{
std::vector<char> FragmentShaderErrorMessage(InfoLGLength+1);
glGetShaderInfoLog(FragmentShaderID, InfoLGLength, nullptr, &FragmentShaderErrorMessage[0]);
CA_ERROR("Compile fragment shader error %s\n", &FragmentShaderErrorMessage[0]);
}
// Link the program
GLuint ProgramID = glCreateProgram();
CA_TRACE("Linking program %d (vertex shader %d, fragment shader %d)\n", ProgramID, VertexShaderID, FragmentShaderID);
GLCheck(glAttachShader(ProgramID, VertexShaderID));
GLCheck(glAttachShader(ProgramID, FragmentShaderID));
GLCheck(glLinkProgram(ProgramID));
// Check the program
GLCheck(glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result));
GLCheck(glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLGLength));
if (Result == GL_FALSE)
{
if ( InfoLGLength > 1 )
{
std::vector<char> ProgramErrorMessage(InfoLGLength+1);
glGetProgramInfoLog(ProgramID, InfoLGLength, nullptr, &ProgramErrorMessage[0]);
CA_ERROR("Link program error %s\n", &ProgramErrorMessage[0]);
}
}
GLCheck(glDeleteShader(VertexShaderID));
GLCheck(glDeleteShader(FragmentShaderID));
return ProgramID;
}
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
}
bool Renderer::LoadShaders(std::string vertex, std::string fragment)
{
const char* vertex_file_path = vertex.c_str();
const char* fragment_file_path = fragment.c_str();
// Create the shaders
GLuint VertexShaderID = glCreateShader(GL_VERTEX_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
{
fprintf(stderr, "RENDERER: Impossible to open shader file: \"%s\".\n",
vertex_file_path);
return false;
}
// 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();
} else
{
fprintf(stderr, "RENDERER: Impossible to open shader file: \"%s\".\n",
vertex_file_path);
return false;
}
GLint Result = GL_FALSE;
int InfoLogLength;
// Compile Vertex Shader
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);
// When empty, Info Log contains only \0 char, making the length = 1
if (InfoLogLength > 1)
{
std::vector<char> VertexShaderErrorMessage(InfoLogLength + 1);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL,
&VertexShaderErrorMessage[0]);
if (!VertexShaderErrorMessage.empty())
fprintf(stderr, "RENDERER: Vertex shaders compilation errors:\n%s\n",
&VertexShaderErrorMessage[0]);
}
// Compile Fragment Shader
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);
// When empty, Info Log contains only \0 char, making the length = 1
if (InfoLogLength > 1)
{
std::vector<char> FragmentShaderErrorMessage(InfoLogLength + 1);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL,
&FragmentShaderErrorMessage[0]);
if (!FragmentShaderErrorMessage.empty())
fprintf(stderr, "RENDERER: Vertex shaders compilation errors:\n%s\n",
&FragmentShaderErrorMessage[0]);
}
// Link the program
mProgram = glCreateProgram();
glAttachShader(mProgram, VertexShaderID);
glAttachShader(mProgram, FragmentShaderID);
glLinkProgram(mProgram);
// Check the program
glGetProgramiv(mProgram, GL_LINK_STATUS, &Result);
glGetProgramiv(mProgram, GL_INFO_LOG_LENGTH, &InfoLogLength);
// When empty, Info Log contains only \0 char, making the length = 1
if (InfoLogLength > 1)
{
std::vector<char> ProgramErrorMessage(InfoLogLength + 1);
glGetProgramInfoLog(mProgram, InfoLogLength, NULL, &ProgramErrorMessage[0]);
if (!ProgramErrorMessage.empty())
fprintf(stderr, "RENDERER: Shaders linking errors:\n%s\n",
&ProgramErrorMessage[0]);
}
// Clean up
glDetachShader(mProgram, VertexShaderID);
glDetachShader(mProgram, FragmentShaderID);
glDeleteShader(VertexShaderID);
glDeleteShader(FragmentShaderID);
return true;
}
GLuint CreateShader( string vertex, string fragment ){
/*
Tworzenie shadera wierzchołków i fragmentu
Zmienne w których przypisane będą ww shadery
*/
GLuint VertexShaderID = glCreateShader( GL_VERTEX_SHADER );
GLuint FragmentShaderID = glCreateShader( GL_FRAGMENT_SHADER );
/*
Zmienne dla pobierania tekstu z plików tekstowych z shaderami
*/
string Line;
//vertex_shader:
/*
Zmienna dla całego kodu shadera wierzchołków.
*/
string VertexShaderCode;
/*
Otwarcie pliku tekstowego do odczytu
*/
ifstream VertexShaderStream( vertex.c_str() );
/*
Sprawdzenie czy plik został poprawnie otwarty.
*/
if( VertexShaderStream.good() ){
Line = "";
/*
Dopuki coś jest w pliku to pobierz całą linię tekstu do zmiennej Line.
*/
while( getline( VertexShaderStream, Line ) ){
/*
Dodaj to do zmiennej, w której będzie cały kod shadera.
*/
VertexShaderCode += Line + "\n";
}
/*
Zamknięcie pliku.
*/
VertexShaderStream.close();
}
/*
W przeciwnym wypadku wypisz błąd otwarcia pliku.
*/
else{
cout<<"File problem: "<<vertex<<"\n";
return 0;
}
/*
Podobnie dla shadera fragmentu.
*/
//Load code fragment_shader:
string FragmentShaderCode;
ifstream FragmentShaderStream( fragment.c_str() );
if( FragmentShaderStream.good() ){
Line = "";
while( getline( FragmentShaderStream, Line ) ){
FragmentShaderCode += Line + "\n";
}
FragmentShaderStream.close();
}
else{
cout<<"File problem: "<<fragment<<"\n";
return 0;
}
/*
Zmienna dla sprawdzenia błędu w OpenGL.
*/
GLint Result;
/*
Zmienna informaująca ile znaków potrzebnych jest do wyświetlenia pełnego komunikatu o błędzie.
*/
GLint InfoLogLength;
string Error;
/*
Zamiana ze string na const char * (aby nie było problemów z dopasowaniem typów).
*/
const char *VertexShaderCodePointer = VertexShaderCode.c_str();
/*
Dodanie źródła dla kompilacji shadera wierchołków.
*/
glShaderSource( VertexShaderID, 1, &VertexShaderCodePointer, 0 );
/*
Kompilowanie shadera wierchołków.
*/
glCompileShader( VertexShaderID );
//Check vertex_shader:
Result = GL_FALSE;
/*
Sprawdzenie kodu błędu.
*/
glGetShaderiv( VertexShaderID, GL_COMPILE_STATUS, &Result );
/*
Gdy jest błąd to wyświetl go.
*/
if( Result == GL_FALSE ){
InfoLogLength = 0;
/*
Pobranie do zmiennej InfoLogLength ilości znaków dla tekstu błedu.
*/
glGetShaderiv( VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength );
/*
Wektor znaków dla OpenGL.
*/
vector <GLchar> VertexShaderErrorMessage(InfoLogLength);
/*
Pobranie tekstu błędu do zmiennej VertexShaderErrorMessage o ilości znaków InfoLogLength.
*/
glGetShaderInfoLog( VertexShaderID, InfoLogLength, &InfoLogLength, &VertexShaderErrorMessage[0] );
/*
Przekopiowanie z wektora VertexShaderErrorMessage zmiennej string Error
*/
Error = string( VertexShaderErrorMessage.begin(), VertexShaderErrorMessage.end() );
/*
Wyświetlenie błedu.
*/
cout<<"Vertex shader: "<<Error<<"\n";
/*
Usunięcie shadera wierzchołków z pamięci.
*/
glDeleteShader( VertexShaderID );
return 0;
}
//fragment_shader:
/*
Tak samo dla shadera fragmentu.
*/
const char *FragmentShaderCodePointer = FragmentShaderCode.c_str();
glShaderSource( FragmentShaderID, 1, &FragmentShaderCodePointer, 0 );
glCompileShader( FragmentShaderID );
//Check fragment_shader:
Result = GL_FALSE;
glGetShaderiv( FragmentShaderID, GL_COMPILE_STATUS, &Result );
if( Result == GL_FALSE ){
InfoLogLength = 0;
glGetShaderiv( FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength );
vector <GLchar> FragmentShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog( FragmentShaderID, InfoLogLength, &InfoLogLength, &FragmentShaderErrorMessage[0] );
Error.clear();
Error = string( FragmentShaderErrorMessage.begin(), FragmentShaderErrorMessage.end() );
cout<<"Fragment shader: "<<Error<<"\n";
glDeleteShader( VertexShaderID );
glDeleteShader( FragmentShaderID );
return 0;
}
Result = GL_FALSE;
InfoLogLength = 0;
//Create program shader:
/*
Stworzenie programy z wszystkimi shaderami.
*/
GLuint ProgramID = glCreateProgram();
/*
Dołączenie shadera wierzchołków do programu.
*/
glAttachShader( ProgramID, VertexShaderID );
/*
Dołączenie shadera fragmentu do programu.
*/
glAttachShader( ProgramID, FragmentShaderID );
/*
Linkuje program, aby mógł być wykorzystany później.
*/
glLinkProgram( ProgramID );
//Check program:
/*
Sprawdzenie poprawności stworzonego programu.
*/
glGetProgramiv( ProgramID, GL_LINK_STATUS, &Result );
/*
Tak samo jak wcześniej, dla sprawdzania błędów w shaderach.
*/
if( Result == GL_FALSE ){
glGetProgramiv( ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength );
vector <GLchar> ProgramErrorMessage(InfoLogLength);
glGetProgramInfoLog( ProgramID, InfoLogLength, &InfoLogLength, &ProgramErrorMessage[0] );
Error.clear();
Error = string( ProgramErrorMessage.begin(), ProgramErrorMessage.end() );
cout<<"program shader: "<<Error<<"\n";
glDeleteProgram( ProgramID );
glDeleteShader( VertexShaderID );
glDeleteShader( FragmentShaderID );
return 0;
}
//delete shaders:
/*
Wyczyszczenie pamięci po stworzonych shaderach, które teraz są w ProgramID.
*/
glDetachShader( ProgramID, VertexShaderID );
glDetachShader( ProgramID, FragmentShaderID );
glDeleteShader( VertexShaderID );
glDeleteShader( FragmentShaderID );
/*
Zwróć identyfikator programu shaderów.
*/
return ProgramID;
}
GLuint LoadShaders(const char* vsPath, const char* fsPath)
{
GLuint VertexShader = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
std::string VertexShaderCode;
std::ifstream VertexShaderStream(vsPath, std::ios::in);
if( VertexShaderStream.good() )
{
std::string Line = "";
while(getline(VertexShaderStream, Line))
VertexShaderCode += "\n" + Line;
VertexShaderStream.close();
} else
std::cout << "Error reading the vertex-shader." << std::endl;
std::string FragmentShaderCode;
std::ifstream FragmentShaderStream(fsPath, std::ios::in);
if( FragmentShaderStream.good() )
{
std::string Line = "";
while(getline(FragmentShaderStream, Line))
FragmentShaderCode += "\n" + Line;
FragmentShaderStream.close();
} else
std::cout << "Error reading the fragment-shader." << std::endl;
GLint Result = GL_FALSE;
int InfoLogLength;
std::cout << "Compiling Shader: " << vsPath << std::endl;
char const* VertexSourcePointer = VertexShaderCode.c_str();
glShaderSource(VertexShader, 1, &VertexSourcePointer, NULL);
glCompileShader(VertexShader);
glGetShaderiv(VertexShader, GL_COMPILE_STATUS, &Result);
glGetShaderiv(VertexShader, GL_INFO_LOG_LENGTH, &InfoLogLength);
char* vsError = new char[InfoLogLength];
glGetShaderInfoLog(VertexShader, InfoLogLength, NULL, vsError);
//if(!vsError)
std::cout << "Vertex-shader error message: " << vsError << std::endl;
delete [] vsError;
std::cout << "Compiling Shader: " << fsPath << std::endl;
char const * FragmentSourcePointer = FragmentShaderCode.c_str();
glShaderSource(FragmentShader, 1, &FragmentSourcePointer, NULL);
glCompileShader(FragmentShader);
glGetShaderiv(FragmentShader, GL_COMPILE_STATUS, &Result);
glGetShaderiv(FragmentShader, GL_INFO_LOG_LENGTH, &InfoLogLength);
char* fsError = new char[InfoLogLength];
glGetShaderInfoLog(FragmentShader, InfoLogLength, NULL, fsError);
// if(!fsError)
std::cout << "Fragment-shader error message: " << fsError << std::endl;
delete [] fsError;
std::cout << "Linking program." << std::endl;
GLuint Program = glCreateProgram();
glAttachShader(Program, VertexShader);
glAttachShader(Program, FragmentShader);
glLinkProgram(Program);
glGetProgramiv(Program, GL_LINK_STATUS, &Result);
glGetProgramiv(Program, GL_INFO_LOG_LENGTH, &InfoLogLength);
InfoLogLength = InfoLogLength < 1 ? 1 : InfoLogLength;
char* programError = new char[InfoLogLength];
glGetProgramInfoLog(Program, InfoLogLength, NULL, programError);
// if(!programError)
std::cout << "Program-linking error message: " << programError << std::endl;
delete [] programError;
glDeleteShader(VertexShader);
glDeleteShader(FragmentShader);
return Program;
}
GLuint ShaderLoader::loadShaders(
const char * vertex_file_path,
const char * tesselation_control_file_path,
const char * tesselation_eval_file_path,
const char * geometry_file_path,
const char * fragment_file_path)
{
// Create the shaders
// Vertex and fragment shader is a must
GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER);
GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER);
GLuint TesselationControlShaderID;
GLuint TesselationEvaluationShaderID;
GLuint GeometryShaderID;
if (tesselation_control_file_path)
TesselationControlShaderID = glCreateShader(GL_TESS_CONTROL_SHADER);
if (tesselation_eval_file_path)
TesselationEvaluationShaderID = glCreateShader(GL_TESS_EVALUATION_SHADER);
if (geometry_file_path)
GeometryShaderID = glCreateShader(GL_GEOMETRY_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();
}
std::string TesselationControlShaderCode;
if (tesselation_control_file_path){
// Read the Tesselation Control Shader code from the file
std::ifstream TesselationControlShaderStream(tesselation_control_file_path, std::ios::in);
if(TesselationControlShaderStream.is_open()){
std::string Line = "";
while(getline(TesselationControlShaderStream, Line))
TesselationControlShaderCode += "\n" + Line;
TesselationControlShaderStream.close();
}
}
std::string TesselationEvaluationShaderCode;
if (tesselation_eval_file_path){
// Read the Tesselation Evaluation Shader code from the file
std::ifstream TesselationEvalStream(tesselation_eval_file_path, std::ios::in);
if(TesselationEvalStream.is_open()){
std::string Line = "";
while(getline(TesselationEvalStream, Line))
TesselationEvaluationShaderCode += "\n" + Line;
TesselationEvalStream.close();
}
}
std::string GeometryShaderCode;
if (geometry_file_path){
// Read the Geometry Shader code from the file
std::ifstream GeomatryShaderStream(geometry_file_path, std::ios::in);
if(GeomatryShaderStream.is_open()){
std::string Line = "";
while(getline(GeomatryShaderStream, Line))
GeometryShaderCode += "\n" + Line;
GeomatryShaderStream.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);
std::vector<char> VertexShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(VertexShaderID, InfoLogLength, NULL, &VertexShaderErrorMessage[0]);
fprintf(stdout, "%s\n", &VertexShaderErrorMessage[0]);
if (tesselation_control_file_path){
// Compile Tesselation Control Shader
printf("Compiling shader : %s\n", tesselation_control_file_path);
char const * TesselationControlSourcePointer = TesselationControlShaderCode.c_str();
glShaderSource(TesselationControlShaderID, 1, &TesselationControlSourcePointer , NULL);
glCompileShader(TesselationControlShaderID);
// Check Tesselation Control Shader
glGetShaderiv(TesselationControlShaderID, GL_COMPILE_STATUS, &Result);
glGetShaderiv(TesselationControlShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> TesselationControlShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(TesselationControlShaderID, InfoLogLength, NULL, &TesselationControlShaderErrorMessage[0]);
fprintf(stdout, "%s\n", &TesselationControlShaderErrorMessage[0]);
}
if (tesselation_eval_file_path){
// Compile Fragment Shader
printf("Compiling shader : %s\n", tesselation_eval_file_path);
char const * TesselationEvaluationSourcePointer = TesselationEvaluationShaderCode.c_str();
glShaderSource(TesselationEvaluationShaderID, 1, &TesselationEvaluationSourcePointer , NULL);
glCompileShader(TesselationEvaluationShaderID);
// Check TesselationEvaluation Shader
glGetShaderiv(TesselationEvaluationShaderID, GL_COMPILE_STATUS, &Result);
glGetShaderiv(TesselationEvaluationShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength);
std::vector<char> TesselationEvaluationShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(TesselationEvaluationShaderID, InfoLogLength, NULL, &TesselationEvaluationShaderErrorMessage[0]);
fprintf(stdout, "%s\n", &TesselationEvaluationShaderErrorMessage[0]);
}
if (geometry_file_path){
// Compile Fragment 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);
std::vector<char> GeometryShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(GeometryShaderID, InfoLogLength, NULL, &GeometryShaderErrorMessage[0]);
fprintf(stdout, "%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);
std::vector<char> FragmentShaderErrorMessage(InfoLogLength);
glGetShaderInfoLog(FragmentShaderID, InfoLogLength, NULL, &FragmentShaderErrorMessage[0]);
fprintf(stdout, "%s\n", &FragmentShaderErrorMessage[0]);
// Link the program
fprintf(stdout, "Linking program\n");
GLuint ProgramID = glCreateProgram();
glAttachShader(ProgramID, VertexShaderID);
if (tesselation_control_file_path)
glAttachShader(ProgramID, TesselationControlShaderID);
if (tesselation_eval_file_path)
glAttachShader(ProgramID, TesselationEvaluationShaderID);
if (geometry_file_path)
glAttachShader(ProgramID, GeometryShaderID);
glAttachShader(ProgramID, FragmentShaderID);
glLinkProgram(ProgramID);
// Check the program
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);
if (tesselation_control_file_path)
glDeleteShader(TesselationControlShaderID);
if (tesselation_eval_file_path)
glDeleteShader(TesselationEvaluationShaderID);
if (geometry_file_path)
glDeleteShader(GeometryShaderID);
glDeleteShader(FragmentShaderID);
return ProgramID;
}
