public void Process()
{
for (CommandBufferEntry walker = first; walker != null; walker = walker.Next)
{
walker.Command.Execute(walker.Args);
}
first = null;
last = null;
}
public void Insert(Command command, ArgList args)
{
if (first == null)
{
CommandBufferEntry entry = new CommandBufferEntry(command, args);
first = entry;
last = entry;
}
else
{
CommandBufferEntry entry = new CommandBufferEntry(command, args, first);
first = entry;
}
}
public void Append(Command command, ArgList args)
{
if (first == null)
{
CommandBufferEntry entry = new CommandBufferEntry(command, args);
first = entry;
last = entry;
}
else
{
CommandBufferEntry entry = new CommandBufferEntry(command, args);
last.Next = entry;
last = entry;
}
}
public CommandBufferEntry(Command command, ArgList args, CommandBufferEntry next)
{
this.Command = command;
this.Args = args;
this.Next = next;
}
public CommandBufferEntry(Command command, ArgList args)
{
this.Command = command;
this.Args = args;
this.Next = null;
}
public CommandBuffer()
{
this.first = null;
this.last = null;
}
//public void OnWillRenderObject()
//{
// DrawLights();
//}
public void DrawLights()
{
//print("Please work");
var act = gameObject.activeInHierarchy && enabled;
if (!act)
{
OnDisable();
return;
}
var cam = Camera.current;
if (!cam)
{
return;
}
// Create material to render lights
if (!_LightMaterial)
{
_LightMaterial = new Material(_LightShader);
_LightMaterial.hideFlags = HideFlags.HideAndDontSave;
}
CommandBufferEntry buf = new CommandBufferEntry();
if (_Cameras.ContainsKey(cam))
{
// use existing command buffers: clear them
buf = _Cameras[cam];
buf._AfterLighting.Clear();
buf._BeforeAlpha.Clear();
}
else
{
// create new command buffers
buf._AfterLighting = new CommandBuffer();
buf._AfterLighting.name = "Deferred custom lights";
buf._BeforeAlpha = new CommandBuffer();
buf._BeforeAlpha.name = "Draw light shapes";
_Cameras[cam] = buf;
cam.AddCommandBuffer(CameraEvent.AfterLighting, buf._AfterLighting);
cam.AddCommandBuffer(CameraEvent.BeforeForwardAlpha, buf._BeforeAlpha);
}
//@TODO: in a real system should cull lights, and possibly only
// recreate the command buffer when something has changed.
var system = SpecialLightSystem.instance;
var propParams = Shader.PropertyToID("_SpecialLightParams");
var propColor = Shader.PropertyToID("_SpecialLightColor");
Vector4 param = Vector4.zero;
Matrix4x4 trs = Matrix4x4.identity;
// construct command buffer to draw lights and compute illumination on the scene
foreach (var o in system._Lights)
{
// light parameters we'll use in the shader
param.x = o._Length;
param.y = o._Radius;
param.z = 1.0f / (o._Range * o._Range);
param.w = (float)o._LightType;
buf._AfterLighting.SetGlobalVector(propParams, param);
// light color
buf._AfterLighting.SetGlobalColor(propColor, o.GetLinearColor());
// Draw sphere that covers light area, with shader
// pass that computes illumination on the scene
trs = Matrix4x4.TRS(o.transform.position, o.transform.rotation, new Vector3(o._Range * 2.0f, o._Range * 2.0f, o._Range * 2.0f));
buf._AfterLighting.DrawMesh(_SphereMesh, trs, _LightMaterial, 0, 0);
}
// construct buffer to draw light shapes themselves as simple objects in the scene
foreach (var o in system._Lights)
{
if (o._Draw)
{
// Get flat light color for alpha
buf._BeforeAlpha.SetGlobalColor(propColor, o.GetLinearColor());
// Draw the light itself as a small sphere/box (I might make the cylinder actually draw a tube later on)
// TRS = Translation, Rotation, Scaling
if (o._LightType == SpecialLight.LightType.Cylinder)
{
Vector3 rotationEuler = o.transform.rotation.eulerAngles;
trs = Matrix4x4.TRS(o.transform.position, Quaternion.Euler(rotationEuler.x, rotationEuler.y, rotationEuler.z + 90.0f), new Vector3(o._Radius * 2.0f, o._Length * 1.0f, o._Radius * 2.0f));
buf._BeforeAlpha.DrawMesh(_CubeMesh, trs, _LightMaterial, 0, 1);
//buf._AfterLighting.DrawMesh(_CubeMesh, trs, _LightMaterial, 0, 1);
}
else if (o._LightType == SpecialLight.LightType.Sphere)
{
trs = Matrix4x4.TRS(o.transform.position, o.transform.rotation, new Vector3(o._Radius * 2.0f, o._Radius * 2.0f, o._Radius * 2.0f));
buf._BeforeAlpha.DrawMesh(_SphereMesh, trs, _LightMaterial, 0, 1);
//buf._AfterLighting.DrawMesh(_SphereMesh, trs, _LightMaterial, 0, 1);
}
}
}
}
