public SceneNode(SceneMesh pMesh, SceneProgram pProg, Vector3 nodePos, List<TextureBinding> texBindings)
{
m_pMesh = pMesh;
m_pProg = pProg;
m_texBindings = texBindings;
m_nodeTm = new Transform();
m_nodeTm.m_trans = nodePos;
}
private void ReadProgram(XmlElement progNode)
{
string pNameNode = progNode.GetAttribute("xml:id");
string pVertexShaderNode = progNode.GetAttribute("vert");
string pFragmentShaderNode = progNode.GetAttribute("frag");
string pModelMatrixNode = progNode.GetAttribute("model-to-camera");
PARSE_THROW(pNameNode, "Program found with no `xml:id` name specified.");
PARSE_THROW(pVertexShaderNode, "Program found with no `vert` vertex shader specified.");
PARSE_THROW(pFragmentShaderNode, "Program found with no `frag` fragment shader specified.");
PARSE_THROW(pModelMatrixNode, "Program found with no model-to-camera matrix uniform name specified.");
//Optional.
string pNormalMatrixNode = progNode.GetAttribute("normal-model-to-camera");
string pGeometryShaderNode = progNode.GetAttribute("geom");
if(m_progs.Keys.Contains(pNameNode))
{
MessageBox.Show("The program named \"" + pNameNode + "\" already exists.");
}
List<int> shaders = new List<int>();
int program = 0;
string vertexShaderString = pVertexShaderNode.ToLower().Substring(0, pVertexShaderNode.Length - 5);
var vertexShaderField = vertexShaders.GetType().GetField(vertexShaderString);
string vertexShader = (string)vertexShaderField.GetValue(vertexShaders);
string fragmentShaderString = pFragmentShaderNode.ToLower().Substring(0, pVertexShaderNode.Length - 5);
var fragmentShaderField = fragmentShaders.GetType().GetField(fragmentShaderString);
string fragmentShader = (string)fragmentShaderField.GetValue(fragmentShaders);
try
{
shaders.Add(Shader.compileShader(ShaderType.VertexShader, vertexShader));
shaders.Add(Shader.compileShader(ShaderType.FragmentShader, fragmentShader));
if(pGeometryShaderNode != "")
shaders.Add(Shader.compileShader(ShaderType.GeometryShader, "GEOMETRY_SHADER"));
program = Shader.LinkProgram(shaders);
}
catch(Exception ex)
{
MessageBox.Show("Error creating program " + ex.ToString());
foreach(int shader in shaders)
{
GL.DeleteShader(shader);
}
}
foreach (int shader in shaders)
{
GL.DeleteShader(shader);
}
int matrixLoc = GL.GetUniformLocation(program, pModelMatrixNode);
if(matrixLoc == -1)
{
GL.DeleteProgram(program);
MessageBox.Show("Could not find the matrix uniform " + pModelMatrixNode +
" in program " + pNameNode);
}
int normalMatLoc = -1;
if(pNormalMatrixNode != "")
{
normalMatLoc = GL.GetUniformLocation(program, pNormalMatrixNode);
if(normalMatLoc == -1)
{
GL.DeleteProgram(program);
MessageBox.Show("Could not find the normal matrix uniform " + pNormalMatrixNode +
" in program " + pNameNode);
}
}
m_progs[pNameNode] = new SceneProgram(program, matrixLoc, normalMatLoc);
ReadProgramContents(program, progNode);
}
