public override void Activate()
{
if (linked == 0 && !triedToLinkAndFailed)
{
GL.GetError();
glProgramHandle = GL.CreateProgram();
GLES2Config.GlCheckError(this);
#if !AXIOM_NO_GLES2_GLSL_OPTIMIZER
if (vertexProgram != null)
{
string paramStr = vertexProgram.GLSLProgram.GetParameter["use_optimiser"];
if (paramStr == "true" || paramStr.Length == 0)
{
GLSLESLinkProgramManager.Instance.OptimizeShaderSource(vertexProgram);
}
}
if (vertexProgram != null)
{
string paramStr = fragmentProgram.GLSLProgram.GetParameter("use_optimiser");
if (paramStr == "true" || paramStr.Length == 0)
{
GLSLESLinkProgramManager.Instance.OptimizeShaderSource(fragmentProgram);
}
}
#endif
this.CompileAndLink();
this.ExtractLayoutQualifiers();
this.BuildGLUniformReferences();
}
this._useProgram();
}
internal static void GlClearError()
{
var e = (int)OpenGL.GetError();
if (e != 0)
{
LogManager.Instance.Write(string.Format("[GLES2] Ignoring error {0} on stack.", e));
}
}
public static void GlCheckError(object caller, bool raiseException)
#endif
{
var e = OpenGL.GetError();
if (e != OpenTK.Graphics.ES20.All.None)
{
var msg = string.Format("[GLES2] Error {0}: {1} from {2}", (int)e, e, caller.ToString());
LogManager.Instance.Write(msg);
if (raiseException)
{
throw new AxiomException(msg);
}
}
}
/// <summary>
/// Build the shaders
/// </summary>
private int LoadShader(ALL20 type, string source)
{
int shader = GL20.CreateShader(type);
if (shader == 0)
{
throw new InvalidOperationException(string.Format(
"Unable to create shader: {0}", GL20.GetError()));
}
// Load the shader source
int length = 0;
GL20.ShaderSource(shader, 1, new string[] { source }, (int[])null);
// Compile the shader
GL20.CompileShader(shader);
int compiled = 0;
GL20.GetShader(shader, ALL20.CompileStatus, ref compiled);
if (compiled == 0)
{
length = 0;
GL20.GetShader(shader, ALL20.InfoLogLength, ref length);
if (length > 0)
{
var log = new StringBuilder(length);
GL20.GetShaderInfoLog(shader, length, ref length, log);
#if DEBUG
Console.WriteLine("GL2" + log.ToString());
#endif
}
GL20.DeleteShader(shader);
throw new InvalidOperationException("Unable to compile shader of type : " + type.ToString());
}
return(shader);
}