/// <summary>
/// Performs a deep copy of this <see cref="IGraphicsState"/>.
/// </summary>
/// <returns>
/// It returns the equivalent of this <see cref="IGraphicsState"/>, but all objects referenced
/// are not referred by both instances.
/// </returns>
public override IGraphicsState Push()
{
ShaderUniformStateBase copiedState = (ShaderUniformStateBase)base.Push();
if (copiedState._UniformBuffer != null)
{
copiedState._UniformBuffer.IncRef();
}
#if ENABLE_REFS_ON_COPY
foreach (KeyValuePair <string, UniformStateMember> pair in copiedState.UniformState)
{
//if (pair.Value.GetUniformType().GetInterface("IGraphicsResource") == null)
// continue;
IGraphicsResource graphicsResource = pair.Value.GetUniformValue(this) as IGraphicsResource;
if (graphicsResource == null)
{
continue;
}
// Copied share references
graphicsResource.IncRef();
}
#endif
return(copiedState);
}
/// <summary>
/// Link a resource used by this UserGraphicsResource.
/// </summary>
/// <param name="graphicsResource">
/// The <see cref="IGraphicsResource"/> that will be linked by this UserGraphicsResource. It will be referenced till
/// this instance disposition. You should not manually reference this instance for the UserGraphicsResource lifetime.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="graphicsResource"/> is null.
/// </exception>
protected void LinkResource(IGraphicsResource graphicsResource)
{
if (graphicsResource == null)
throw new ArgumentNullException("graphicsResource");
if (ObjectNamespace != Guid.Empty && graphicsResource.ObjectNamespace != Guid.Empty && ObjectNamespace != graphicsResource.ObjectNamespace)
throw new ArgumentException("namespace mismatch", "graphicsResource");
// Reference resources
graphicsResource.IncRef();
// Unreference at disposition
_GpuResources.Add(graphicsResource);
}
/// <summary>
/// Link a resource associated with this SceneGraphObject.
/// </summary>
/// <param name="graphicsResource">
/// A <see cref="IGraphicsResource"/> that will be created and disposed along with this SceneGraphObject instance.
/// </param>
/// <remarks>
/// The <paramref name="graphicsResource"/> can be shared across multiple SceneGraphObject instances.
/// </remarks>
protected void LinkResource(IGraphicsResource graphicsResource)
{
if (graphicsResource == null)
{
throw new ArgumentNullException("graphicsResource");
}
// Formally a resource can be linked multiple times, but probably it is caused by a copy & paste error
Debug.Assert(!_Resources.Contains(graphicsResource));
// By default, threat resources as shared ones
graphicsResource.IncRef();
// Let create/dispose it
_Resources.Add(graphicsResource);
}
/// <summary>
/// Link a resource used by this UserGraphicsResource.
/// </summary>
/// <param name="graphicsResource">
/// The <see cref="GraphicsResource"/> that will be linked by this UserGraphicsResource. It will be referenced till
/// this instance disposition. You should not manually reference this instance for the UserGraphicsResource lifetime.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="graphicsResource"/> is null.
/// </exception>
protected void LinkResource(IGraphicsResource graphicsResource)
{
if (graphicsResource == null)
{
throw new ArgumentNullException("graphicsResource");
}
if (ObjectNamespace != Guid.Empty && graphicsResource.ObjectNamespace != Guid.Empty && ObjectNamespace != graphicsResource.ObjectNamespace)
{
throw new ArgumentException("namespace mismatch", "graphicsResource");
}
// Reference resources
graphicsResource.IncRef();
// Unreference at disposition
Debug.Assert(!_UserResources.Contains(graphicsResource));
_UserResources.Add(graphicsResource);
}
/// <summary>
/// Set uniform variable state.
/// </summary>
/// <param name="uniformName">
///
/// </param>
/// <param name="value">
///
/// </param>
public void SetUniformState(string uniformName, object value)
{
if (uniformName == null)
{
throw new ArgumentNullException("uniformName");
}
UniformStateMember uniformStateMember;
if (_UniformProperties.TryGetValue(uniformName, out uniformStateMember))
{
UniformStateVariable uniformStateVariable = (UniformStateVariable)uniformStateMember;
IGraphicsResource prevResource = uniformStateVariable.UniformValue as IGraphicsResource;
if (prevResource != null)
{
prevResource.DecRef();
}
IGraphicsResource currResource = value as IGraphicsResource;
if (currResource != null)
{
currResource.IncRef();
}
uniformStateVariable.UniformValue = value;
}
else
{
IGraphicsResource currResource = value as IGraphicsResource;
if (currResource != null)
{
currResource.IncRef();
}
_UniformProperties.Add(uniformName, new UniformStateVariable(uniformName, value));
}
}