/// <summary>
///
/// </summary>
/// <param name="glNode"></param>
/// <returns></returns>
protected override GLSnippet FindSnippet(GLNode glNode)
{
Type nodeType = glNode.SelfTypeCache;
GLSnippet snippet = null;
dictionary.TryGetValue(nodeType, out snippet);
return(snippet);
}
/// <summary>
///
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public override void BeforeChildren(GLAction glAction, GLNode glNode)
{
var action = glAction as RenderAction;
var node = glNode as GLZeroIndexNode;
Debug.Assert(action != null);
Debug.Assert(node != null);
action.Context.indexBuffer = node.GetIndexBuffer();
}
/// <summary>
///
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public override void BeforeChildren(GLAction glAction, GLNode glNode)
{
var action = glAction as RenderAction;
var node = glNode as GLProgramNode;
Debug.Assert(action != null);
Debug.Assert(node != null);
action.Context.shaderProgram = node.GetShaderProgram();
}
/// <summary>
///
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public override void DoAction(GLAction glAction, GLNode glNode)
{
var action = glAction as RenderAction;
var node = glNode as GLVertexNode;
Debug.Assert(action != null);
Debug.Assert(node != null);
VertexBuffer vertexAttributeBuffer = node.GetVertexAttributeBuffer();
action.Context.vertexAttributeBuffers.Add(vertexAttributeBuffer);
}
/// <summary>
///
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public override void BeforeChildren(GLAction glAction, GLNode glNode)
{
var action = glAction as RenderAction;
var node = glNode as GLStateNode;
Debug.Assert(action != null);
Debug.Assert(node != null);
GLState state = node.GetState();
action.Context.glStateList.Add(state);
}
/// <summary>
/// Find the wanted <see cref="GLSnippet"/> according to specified <paramref name="glNode"/>.
/// </summary>
/// <param name="glNode"></param>
/// <returns></returns>
protected GLSnippet Find(GLNode glNode)
{
Type nodeType = glNode.GetType();
GLSnippet snippet = null;
var dict = this.Dictionary;
if (!dict.TryGetValue(nodeType, out snippet))
{
snippet = GLSnippetHelper.CreateInstance(this, glNode);
dict.Add(nodeType, snippet);
}
return(snippet);
}
/// <summary>
///
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public override void DoAction(GLAction glAction, GLNode glNode)
{
var action = glAction as RenderAction;
var node = glNode as GLTriangleStripNode;
Debug.Assert(action != null);
Debug.Assert(node != null);
if (action.Context.vertexArrayObject == null)
{
VertexArrayObject vao = node.GetVertexArrayObject(action.Context.indexBuffer, action.Context.vertexAttributeBuffers.ToArray());
action.Context.vertexArrayObject = vao;
}
action.Context.Render();
}
private void Triverse(GLNode gLNode)
{
GLSnippet snippet = this.FindSnippet(gLNode);
if (snippet != null)
{
snippet.BeforeChildren(this, gLNode);
}
foreach (var item in gLNode.Children)
{
this.Triverse(item);
}
if (snippet != null)
{
snippet.AfterChildren(this, gLNode);
}
}
public static GLSnippet CreateInstance(GLAction someAction, GLNode glSomeNode)
{
Type actionType = someAction.ThisTypeCache;
Type nodeType = glSomeNode.ThisTypeCache;
GLSnippet result = null;
// NOTE: This forces GLSnippet's class name's pattern.
string prefix = actionType.Name.Substring(0, actionType.Name.Length - "Action".Length);
string postfix = nodeType.Name.Substring("GL".Length, nodeType.Name.Length - "GL".Length - "Node".Length);
try
{
Type type = Type.GetType(prefix + "_" + postfix);
result = Activator.CreateInstance(type) as GLSnippet;
}
catch (Exception)
{
}
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public override void BeforeChildren(GLAction glAction, GLNode glNode)
{
var action = glAction as RenderAction;
var node = glNode as GLPositionColorNode;
Debug.Assert(action != null);
Debug.Assert(node != null);
if (action.Context.vertexArrayObject == null)
{
VertexArrayObject vao = node.GetVertexArrayObject(action.Context.indexBuffer, action.Context.vertexAttributeBuffers.ToArray());
action.Context.vertexArrayObject = vao;
}
if (action.Context.shaderProgram == null)
{
action.Context.shaderProgram = node.GetProgram();
}
action.Context.Render();
}
/// <summary> /// a group of related OpenGL codes to specified <paramref name="glAction"/> and <paramref name="glNode"/>. /// </summary> /// <param name="glAction"></param> /// <param name="glNode"></param> public abstract void DoAction(GLAction glAction, GLNode glNode);
/// <summary>
/// a group of related OpenGL codes to specified <paramref name="glAction"/> and <paramref name="glNode"/>.
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public virtual void AfterChildren(GLAction glAction, GLNode glNode)
{
}
/// <summary>
/// a group of related OpenGL codes to specified <paramref name="glAction"/> and <paramref name="glNode"/>.
/// </summary>
/// <param name="glAction"></param>
/// <param name="glNode"></param>
public virtual void BeforeChildren(GLAction glAction, GLNode glNode)
{
}
/// <summary>
///
/// </summary>
/// <param name="glNode"></param>
public void Apply(GLNode glNode)
{
this.appliedNode = glNode;
}
/// <summary> /// Find the wanted <see cref="GLSnippet"/> according to specified <paramref name="glNode"/>. /// </summary> /// <param name="glNode"></param> /// <returns></returns> protected abstract GLSnippet FindSnippet(GLNode glNode);