bool Shader::CompileSourceFile(const string& aFileName)
{
//Delete previous shader if the class already contained one.
if(mShaderId != 0)
{
glDeleteShader(mShaderId);
}
//Open and read the shader file.
fstream ShaderFile;
ShaderFile.open(aFileName.c_str());
string ShaderCode( (std::istreambuf_iterator<char>(ShaderFile)),
std::istreambuf_iterator<char>()
);
ShaderFile.close();
//Create the shader object
if(mType == Shader_Vertex)
{
mShaderId = glCreateShader(GL_VERTEX_SHADER);
}
else if(mType == Shader_Fragment)
{
mShaderId = glCreateShader(GL_FRAGMENT_SHADER);
}
//Associate the shader's source code to the shader object.
const char* ShaderChars = ShaderCode.c_str();
glShaderSource(mShaderId,1,&ShaderChars,NULL);
//Compile the shader
glCompileShader(mShaderId);
mShaderId = mShaderId;
return IsCompiled();
}
Shader::Shader(string& vertexPath, string& fragPath) : Code(), program(new GLuint( -1), deleteGLProgram())
{
Code.push_back(ShaderCode( this, VERTEX, vertexPath));
Code.push_back(ShaderCode( this, FRAGMENT, fragPath));
}
