public unsafe void Link(IEnumerable <Shader> shaderList)
{
var programId = Gl.CreateProgram();
foreach (var sd in shaderList)
{
Gl.AttachShader(programId, sd.Raw());
}
Gl.LinkProgram(programId);
int status;
Gl.GetProgramiv(programId, Gl.LinkStatus, &status);
if (status == 0)
{
int infoLogLength;
Gl.GetProgramiv(programId, Gl.InfoLogLength, &infoLogLength);
var strInfoLog = Marshal.AllocHGlobal(infoLogLength + 1);
Gl.GetProgramInfoLog(programId, infoLogLength, null, (char *)strInfoLog);
var infoLog = Gl.Utf8ToManaged(strInfoLog);
Marshal.FreeHGlobal(strInfoLog);
throw new Exception("Linker failure: " + infoLog);
}
_hdc = programId;
}
/// <summary>
/// Links a vertex and fragment shader together to create a shader program.
/// </summary>
/// <param name="vertexShader">Specifies the vertex shader.</param>
/// <param name="fragmentShader">Specifies the fragment shader.</param>
public ShaderProgram(Shader vertexShader, Shader fragmentShader)
{
this.VertexShader = vertexShader;
this.FragmentShader = fragmentShader;
this.ProgramID = Gl.CreateProgram();
this.DisposeChildren = false;
Gl.AttachShader(ProgramID, vertexShader.ShaderID);
Gl.AttachShader(ProgramID, fragmentShader.ShaderID);
Gl.LinkProgram(ProgramID);
GetParams();
}
/// <summary>
/// Links a vertex and fragment shader together to create a shader program.
/// </summary>
/// <param name="vertexShader">Specifies the vertex shader.</param>
/// <param name="fragmentShader">Specifies the fragment shader.</param>
public ShaderProgram(Shader vertexShader, Shader fragmentShader)
{
this.VertexShader = vertexShader;
this.FragmentShader = fragmentShader;
this.ProgramID = Gl.CreateProgram();
this.DisposeChildren = false;
Gl.AttachShader(ProgramID, vertexShader.ShaderID);
Gl.AttachShader(ProgramID, fragmentShader.ShaderID);
Gl.LinkProgram(ProgramID);
//Check whether the program linked successfully.
//If not then throw an error with the linking error.
if (!Gl.GetProgramLinkStatus(ProgramID))
{
throw new Exception(ProgramLog);
}
GetParams();
}
/// <summary>
/// Create a ShaderProgram name.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for creating this object name.
/// </param>
/// <returns>
/// It returns a valid object name for this ShaderProgram.
/// </returns>
protected override uint CreateName(GraphicsContext ctx)
{
// Create program
return(Gl.CreateProgram());
}
