void ShaderFileLoader::parseFiles()
{
for (std::size_t i = 0; i < _files.size(); ++i)
{
const std::string& fullPath = _files[i];
if (_currentOperation)
{
_currentOperation->setMessage((boost::format(_("Parsing material file %s")) % fullPath).str());
float progress = static_cast<float>(i) / _files.size();
_currentOperation->setProgress(progress);
}
// Open the file
ArchiveTextFilePtr file = GlobalFileSystem().openTextFile(fullPath);
if (file != NULL)
{
std::istream is(&(file->getInputStream()));
parseShaderFile(is, fullPath);
}
else
{
throw std::runtime_error("Unable to read shaderfile: " + fullPath);
}
}
}
shaderRefMaps AaMaterialFileParser::parseAllShaderFiles(std::string directory, bool subFolders)
{
shaderRefMaps shaders;
if (!boost::filesystem::exists(directory)) return shaders;
boost::filesystem::directory_iterator end_itr; // default construction yields past-the-end
for ( boost::filesystem::directory_iterator itr(directory); itr != end_itr; ++itr )
{
if ( is_directory(itr->path()) && subFolders)
{
shaderRefMaps subInfos=parseAllShaderFiles(itr->path().generic_string(),subFolders);
shaders.vertexShaderRefs.insert(subInfos.vertexShaderRefs.begin(),subInfos.vertexShaderRefs.end());
shaders.pixelShaderRefs.insert(subInfos.pixelShaderRefs.begin(),subInfos.pixelShaderRefs.end());
}
else if ( boost::filesystem::is_regular_file(itr->path()) && itr->path().generic_string().find(".program")!=std::string::npos) // see below
{
AaLogger::getLogger()->writeMessage(itr->path().generic_string());
shaderRefMaps localShaders=parseShaderFile(itr->path().generic_string());
shaders.vertexShaderRefs.insert(localShaders.vertexShaderRefs.begin(),localShaders.vertexShaderRefs.end());
shaders.pixelShaderRefs.insert(localShaders.pixelShaderRefs.begin(),localShaders.pixelShaderRefs.end());
AaLogger::getLogger()->writeMessage("Loaded shader references: "+boost::lexical_cast<std::string,int>(localShaders.pixelShaderRefs.size()+localShaders.vertexShaderRefs.size()));
}
}
AaLogger::getLogger()->writeMessage( "Total shader references here: "+boost::lexical_cast<std::string,int>(shaders.pixelShaderRefs.size()+shaders.vertexShaderRefs.size()));
return shaders;
}
GPUuint Shader::createShader(const std::string &filename)
{
//compare file's extension name
std::string shaderName(filename);
size_t found = shaderName.rfind('.');
GLuint shaderId = 0;
GLenum shaderType;
if (shaderName.compare(found + 1, 4, "vert") == 0)
{
shaderType = GL_VERTEX_SHADER;
shaderId = glCreateShader(GL_VERTEX_SHADER);
}
else if (shaderName.compare(found + 1, 4, "frag") == 0)
{
shaderType = GL_FRAGMENT_SHADER;
shaderId = glCreateShader(GL_FRAGMENT_SHADER);
}
else if (shaderName.compare(found + 1, 4, "geom") == 0)
{
shaderType = GL_GEOMETRY_SHADER;
shaderId = glCreateShader(GL_GEOMETRY_SHADER);
}
else if (shaderName.compare(found + 1, 4, "comp") == 0)
{
shaderType = GL_COMPUTE_SHADER;
shaderId = glCreateShader(GL_COMPUTE_SHADER);
}
else
{
return 0;
}
const std::string shaderCode = parseShaderFile(filename);
const char *code = shaderCode.c_str();
glShaderSource(shaderId, 1, &code, NULL);
glCompileShader(shaderId);
GLint compileStatus;//whether compilation succeeds
glGetShaderiv(shaderId, GL_COMPILE_STATUS, &compileStatus);
if(GL_FALSE == compileStatus)
{
GLint infoLogLength;
glGetShaderiv(shaderId, GL_INFO_LOG_LENGTH, &infoLogLength);
GLchar *infoLog = new GLchar[infoLogLength + 1];
glGetShaderInfoLog(shaderId, infoLogLength, NULL, infoLog);
std::cerr << "Compile failure in " << shaderName << ": " << std::endl
<< infoLog << std::endl << std::endl;
delete [] infoLog;
}
return shaderId;
}
void ShaderFileLoader::visit(const std::string& filename)
{
// Construct the full VFS path
std::string fullPath = _basePath + filename;
// Open the file
ArchiveTextFilePtr file = GlobalFileSystem().openTextFile(fullPath);
if (file != NULL) {
std::istream is(&(file->getInputStream()));
parseShaderFile(is, fullPath);
}
else
{
throw std::runtime_error("Unable to read shaderfile: " + fullPath);
}
}
