void Update()
{
PluginEntry.Poll();
if (_receiver == System.IntPtr.Zero)
{
// The receiver hasn't been set up yet; try to get one.
SearchAndCreateTexture();
}
else
{
// We've received textures via this receiver
// but now it's disconnected from the sender -> Destroy it.
if (PluginEntry.GetTexturePointer(_receiver) != System.IntPtr.Zero &&
PluginEntry.DetectDisconnection(_receiver))
{
OnDestroy();
}
}
if (_receiver != System.IntPtr.Zero)
{
if (_sharedTexture == null)
{
// Try to initialize the shared texture.
var ptr = PluginEntry.GetTexturePointer(_receiver);
if (ptr != System.IntPtr.Zero)
{
_sharedTexture = Texture2D.CreateExternalTexture(
PluginEntry.GetTextureWidth(_receiver),
PluginEntry.GetTextureHeight(_receiver),
TextureFormat.ARGB32, false, false, ptr
);
}
}
else
{
// Update external objects.
if (_targetTexture != null)
{
Graphics.Blit(_sharedTexture, _targetTexture, _fixupMaterial, 1);
}
else
{
if (_fixedTexture == null)
{
_fixedTexture = new RenderTexture(_sharedTexture.width, _sharedTexture.height, 0);
}
Graphics.Blit(_sharedTexture, _fixedTexture, _fixupMaterial, 1);
}
if (_targetRenderer != null)
{
_propertyBlock.SetTexture(_targetMaterialProperty, receivedTexture);
_targetRenderer.SetPropertyBlock(_propertyBlock);
}
}
}
}
void SendRenderTexture(RenderTexture source)
{
if (currentSenderName != senderName)
{
DisposePlugin();
}
// Plugin lazy initialization
if (_plugin == System.IntPtr.Zero)
{
_plugin = PluginEntry.CreateSender(senderName, source.width, source.height);
currentSenderName = senderName;
if (_plugin == System.IntPtr.Zero)
{
return; // Spout may not be ready.
}
}
// Shared texture lazy initialization
if (_sharedTexture == null)
{
var ptr = PluginEntry.GetTexturePointer(_plugin);
if (ptr != System.IntPtr.Zero)
{
_sharedTexture = Texture2D.CreateExternalTexture(
PluginEntry.GetTextureWidth(_plugin),
PluginEntry.GetTextureHeight(_plugin),
TextureFormat.ARGB32, false, false, ptr
);
_sharedTexture.hideFlags = HideFlags.DontSave;
}
}
// Shared texture update
if (_sharedTexture != null)
{
// Blit shader lazy initialization
if (_blitMaterial == null)
{
_blitMaterial = new Material(Shader.Find("Hidden/Spout/Blit"));
_blitMaterial.hideFlags = HideFlags.DontSave;
}
// Blit shader parameters
_blitMaterial.SetFloat("_ClearAlpha", _alphaSupport ? 0 : 1);
// We can't directly blit to the shared texture (as it lacks
// render buffer functionality), so we temporarily allocate a
// render texture as a middleman, blit the source to it, then
// copy it to the shared texture using the CopyTexture API.
var tempRT = RenderTexture.GetTemporary
(_sharedTexture.width, _sharedTexture.height);
Graphics.Blit(source, tempRT, _blitMaterial, 0);
Graphics.CopyTexture(tempRT, _sharedTexture);
RenderTexture.ReleaseTemporary(tempRT);
}
}
void SendRenderTexture(RenderTexture source)
{
// Plugin lazy initialization
if (_plugin == System.IntPtr.Zero)
{
_plugin = PluginEntry.CreateSender(name, source.width, source.height);
if (_plugin == System.IntPtr.Zero)
{
return; // Spout may not be ready.
}
}
// Shared texture lazy initialization
//TextureFormat format = TextureFormat.ARGB32; // TABULA: original KlakSpout, DX11 only
TextureFormat format = TextureFormat.BGRA32; // TABULA: FaçadeSignage compatibilty, DX9/DX11
if (_sharedTexture == null)
{
var ptr = PluginEntry.GetTexturePointer(_plugin);
if (ptr != System.IntPtr.Zero)
{
_sharedTexture = Texture2D.CreateExternalTexture(
PluginEntry.GetTextureWidth(_plugin),
PluginEntry.GetTextureHeight(_plugin),
format, false, false, ptr
);
_sharedTexture.hideFlags = HideFlags.DontSave;
}
}
// Shared texture update
if (_sharedTexture != null)
{
// Blit shader lazy initialization
if (_blitMaterial == null)
{
_blitMaterial = new Material(Shader.Find("Hidden/Spout/Blit"));
_blitMaterial.hideFlags = HideFlags.DontSave;
}
// Blit shader parameters
_blitMaterial.SetFloat("_ClearAlpha", _alphaSupport ? 0 : 1);
// We can't directly blit to the shared texture (as it lacks
// render buffer functionality), so we temporarily allocate a
// render texture as a middleman, blit the source to it, then
// copy it to the shared texture using the CopyTexture API.
var tempRT = RenderTexture.GetTemporary
(_sharedTexture.width, _sharedTexture.height, 0, RenderTextureFormat.BGRA32); // tabula: using BGRA32 also for temp
Graphics.Blit(source, tempRT, _blitMaterial, 0);
Graphics.CopyTexture(tempRT, _sharedTexture);
RenderTexture.ReleaseTemporary(tempRT);
}
}
void OnRenderImage(RenderTexture source, RenderTexture destination)
{
// Lazy initialization for the shared texture.
if (_sharedTexture == null)
{
var ptr = PluginEntry.GetTexturePointer(_sender);
if (ptr != System.IntPtr.Zero)
{
_sharedTexture = Texture2D.CreateExternalTexture(
PluginEntry.GetTextureWidth(_sender),
PluginEntry.GetTextureHeight(_sender),
TextureFormat.ARGB32, false, false, ptr
);
}
}
// Update the shared texture.
if (_sharedTexture != null)
{
// Lazy initialization for the fix-up shader.
if (_fixupMaterial == null)
{
_fixupMaterial = new Material(Shader.Find("Hidden/Spout/Fixup"));
}
// Parameters for the fix-up shader.
_fixupMaterial.SetFloat("_ClearAlpha", _clearAlpha ? 1 : 0);
// Apply the fix-up shader.
var tempRT = RenderTexture.GetTemporary(_sharedTexture.width, _sharedTexture.height);
Graphics.Blit(source, tempRT, _fixupMaterial, 0);
// Copy the result to the shared texture.
Graphics.CopyTexture(tempRT, _sharedTexture);
// Release temporaries.
RenderTexture.ReleaseTemporary(tempRT);
}
if (this.sendOnly)
{
// Clear previous image to render GUI.
RenderTexture prev = RenderTexture.active;
RenderTexture.active = null;
GL.Clear(true, true, _camera.backgroundColor);
RenderTexture.active = prev;
}
else
{
// Just transfer the source to the destination.
Graphics.Blit(source, destination);
}
}
void Update()
{
// Release the plugin instance when the previously established
// connection is now invalid.
if (_plugin != System.IntPtr.Zero && !PluginEntry.CheckValid(_plugin))
{
Util.IssuePluginEvent(PluginEntry.Event.Dispose, _plugin);
_plugin = System.IntPtr.Zero;
}
// Plugin lazy initialization
if (_plugin == System.IntPtr.Zero)
{
_plugin = PluginEntry.CreateReceiver(_sourceName);
if (_plugin == System.IntPtr.Zero)
{
return; // Spout may not be ready.
}
}
Util.IssuePluginEvent(PluginEntry.Event.Update, _plugin);
// Texture information retrieval
var ptr = PluginEntry.GetTexturePointer(_plugin);
var width = PluginEntry.GetTextureWidth(_plugin);
var height = PluginEntry.GetTextureHeight(_plugin);
// Resource validity check
if (_sharedTexture != null)
{
if (ptr != _sharedTexture.GetNativeTexturePtr() ||
width != _sharedTexture.width ||
height != _sharedTexture.height)
{
// Not match: Destroy to get refreshed.
Util.Destroy(_sharedTexture);
}
}
// Shared texture lazy (re)initialization
if (_sharedTexture == null && ptr != System.IntPtr.Zero)
{
_sharedTexture = Texture2D.CreateExternalTexture(
width, height, TextureFormat.ARGB32, false, false, ptr
);
_sharedTexture.hideFlags = HideFlags.DontSave;
// Destroy the previously allocated receiver texture to
// refresh specifications.
if (_receivedTexture == null)
{
Util.Destroy(_receivedTexture);
}
}
// Texture format conversion with the blit shader
if (_sharedTexture != null)
{
// Blit shader lazy initialization
if (_blitMaterial == null)
{
_blitMaterial = new Material(Shader.Find("Hidden/Spout/Blit"));
_blitMaterial.hideFlags = HideFlags.DontSave;
}
if (_targetTexture != null)
{
// Blit the shared texture to the target texture.
Graphics.Blit(_sharedTexture, _targetTexture, _blitMaterial, 1);
}
else
{
// Receiver texture lazy initialization
if (_receivedTexture == null)
{
_receivedTexture = new RenderTexture
(_sharedTexture.width, _sharedTexture.height, 0);
_receivedTexture.hideFlags = HideFlags.DontSave;
}
// Blit the shared texture to the receiver texture.
Graphics.Blit(_sharedTexture, _receivedTexture, _blitMaterial, 1);
}
}
// Renderer override
if (_targetRenderer != null && receivedTexture != null)
{
// Material property block lazy initialization
if (_propertyBlock == null)
{
_propertyBlock = new MaterialPropertyBlock();
}
// Read-modify-write
_targetRenderer.GetPropertyBlock(_propertyBlock);
_propertyBlock.SetTexture(_targetMaterialProperty, receivedTexture);
_targetRenderer.SetPropertyBlock(_propertyBlock);
}
}
