private void OnDestroy()
{
if (drawingMtrl != null)
{
DestroyImmediate(drawingMtrl);
drawingMtrl = null;
}
if (mainCam != null)
{
DestroySceneViewCameras();
mainCam.targetTexture = null;
mainCam = null;
}
DestroyScreenMesh();
ReleaseRenderTextureCompositeResources();
ReleaseImageEffects();
if (cbAfterAlpha != null)
{
cbAfterAlpha.Destroy();
cbAfterAlpha = null;
}
if (cbBeforeOpaque != null)
{
cbBeforeOpaque.Destroy();
cbBeforeOpaque = null;
}
}
private void Start()
{
InitMaterialUniformNames();
cbAfterAlpha = new ACommandBuffer("Shadow Volume After Alpha CB", CameraEvent.AfterForwardAlpha);
cbBeforeOpaque = new ACommandBuffer("Shadow Volume Before Opaque CB", CameraEvent.BeforeForwardOpaque);
drawingMtrl = new Material(Shader.Find("Hidden/ShadowVolume/Drawing"));
drawingMtrl.name = "Shadow Volume Drawing Material";
shadowVolumeRT = Shader.PropertyToID("_ShadowVolumeRT");
shadowVolumeFadeRT = Shader.PropertyToID("_ShadowVolumeFadeRT");
shadowVolumeColorRT = Shader.PropertyToID("_ShadowVolumeColorRT");
shadowDistanceUniformId = Shader.PropertyToID("_ShadowVolumeDistance");
mainCam = GetComponent <Camera>();
sceneViewFirstTime = IsSceneViewCamera();
InitSceneViewRT();
CreateScreenMesh();
UpdateCommandBuffers();
SetupSceneViewCameras();
}
private void UpdateCommandBuffers()
{
ACommandBuffer cbBeforeOpaque = GetBeforeOpaqueCB();
CollectImageEffects();
cbBeforeOpaque.AddToCamera(mainCam);
mainCam.allowMSAA = isRenderTextureComposite ? false : anti_aliasing;
mainCam.allowHDR = false; // HDR is not supported
cbBeforeOpaque.CB.Clear();
if (isRenderTextureComposite)
{
cbBeforeOpaque.CB.SetRenderTarget(GetMainCamRT());
cbBeforeOpaque.CB.ClearRenderTarget(true, true, new Color(0, 0, 0, 0), 1.0f);
if (IsSceneViewCamera())
{
cbBeforeOpaque.CB.Blit(sceneViewRT, GetMainCamRT());
}
}
UpdateCommandBuffer_AfterAlpha(null);
if (!isRenderTextureComposite)
{
ReleaseRenderTextureCompositeResources();
}
}
private ACommandBuffer GetBeforeOpaqueCB()
{
if (cbBeforeOpaque == null)
{
cbBeforeOpaque = new ACommandBuffer("Shadow Volume Before Opaque CB", CameraEvent.BeforeForwardOpaque);
}
return(cbBeforeOpaque);
}
private ACommandBuffer GetAfterAlphaCB()
{
if (cbAfterAlpha == null)
{
cbAfterAlpha = new ACommandBuffer("Shadow Volume After Alpha CB", CameraEvent.AfterForwardAlpha);
}
return(cbAfterAlpha);
}
private void UpdateCommandBuffer_AfterAlpha(ShadowVolumeObject[] svos)
{
ACommandBuffer cbAfterAlpha = GetAfterAlphaCB();
cbAfterAlpha.AddToCamera(mainCam);
cbAfterAlpha.CB.Clear();
if (isRenderTextureComposite)
{
RenderTexture mainCamRT = GetMainCamRT();
cbAfterAlpha.CB.GetTemporaryRT(shadowVolumeRT, mainCamRT.width, mainCamRT.height, 0, FilterMode.Bilinear, RenderTextureFormat.ARGB32);
cbAfterAlpha.CB.SetRenderTarget(shadowVolumeRT, mainCamRT);
cbAfterAlpha.CB.ClearRenderTarget(false, true, Color.white);
if (IsShadowDistanceFadeEnabled())
{
cbAfterAlpha.CB.GetTemporaryRT(shadowVolumeFadeRT, mainCamRT.width, mainCamRT.height, 0, FilterMode.Bilinear, RenderTextureFormat.ARGB32);
cbAfterAlpha.CB.SetRenderTarget(shadowVolumeFadeRT, mainCamRT);
cbAfterAlpha.CB.ClearRenderTarget(false, true, Color.white);
}
}
ReleaseSVOs();
int pass_two_side_stencil = IsShadowDistanceFadeEnabled() ? 10 : 4;
int pass_back_face = IsShadowDistanceFadeEnabled() ? 7 : 0;
int pass_front_face = IsShadowDistanceFadeEnabled() ? 8 : 1;
int pass_zero_stencil = 3;
int pass_draw_shadow = isRenderTextureComposite ? (IsShadowDistanceFadeEnabled() ? 9 : 6) : 2;
int pass_composite_shadow = 5;
ShadowVolumeCombined[] combinedObjs = static_combinedSVOs == null || !Application.isPlaying ? FindObjectsOfType <ShadowVolumeCombined>() : static_combinedSVOs;
static_combinedSVOs = combinedObjs;
if (combinedObjs != null && combinedObjs.Length > 0)
{
cbAfterAlpha.CB.DrawMesh(screenMesh, Matrix4x4.identity, drawingMtrl, 0, pass_zero_stencil);
foreach (var combinedObj in combinedObjs)
{
MeshFilter mf = combinedObj.GetComponent <MeshFilter>();
if (mf != null && mf.sharedMesh != null)
{
if (isTwoSideStencil)
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, Matrix4x4.identity, drawingMtrl, 0, pass_two_side_stencil);
}
else
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, Matrix4x4.identity, drawingMtrl, 0, pass_back_face);
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, Matrix4x4.identity, drawingMtrl, 0, pass_front_face);
}
}
}
if (IsShadowDistanceFadeEnabled())
{
cbAfterAlpha.CB.SetRenderTarget(shadowVolumeRT, mainCamRT);
}
cbAfterAlpha.CB.DrawMesh(screenMesh, Matrix4x4.identity, drawingMtrl, 0, pass_draw_shadow);
}
else
{
cbAfterAlpha.CB.DrawMesh(screenMesh, Matrix4x4.identity, drawingMtrl, 0, pass_zero_stencil);
ShadowVolumeObject[] svObjs = svos == null || !Application.isPlaying ? FindObjectsOfType <ShadowVolumeObject>() : svos;
static_svos = svObjs;
UpdateBounds();
if (svObjs != null)
{
Vector3 camWPos = mainCam.transform.position;
Vector3 camWForward = mainCam.transform.forward;
bool isShadowDistanceEnabled = IsShadowDistanceEnabled();
foreach (var svObj in svObjs)
{
if (IsShadowVolulmeObjectVisible(svObj, isShadowDistanceEnabled, ref camWPos, ref camWForward))
{
MeshFilter mf = svObj.meshFilter;
if (mf != null && mf.sharedMesh != null)
{
Matrix4x4 l2w = svObj.l2w;
bool twoSubMeshes = mf.sharedMesh.subMeshCount == 2;
if (isTwoSideStencil)
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, l2w, drawingMtrl, 0, pass_two_side_stencil);
if (twoSubMeshes)
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, l2w, drawingMtrl, 1, pass_two_side_stencil);
}
}
else
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, l2w, drawingMtrl, 0, pass_back_face);
if (twoSubMeshes)
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, l2w, drawingMtrl, 1, pass_back_face);
}
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, l2w, drawingMtrl, 0, pass_front_face);
if (twoSubMeshes)
{
cbAfterAlpha.CB.DrawMesh(mf.sharedMesh, l2w, drawingMtrl, 1, pass_front_face);
}
}
}
}
}
}
if (IsShadowDistanceFadeEnabled())
{
cbAfterAlpha.CB.SetRenderTarget(shadowVolumeRT, mainCamRT);
}
cbAfterAlpha.CB.DrawMesh(screenMesh, Matrix4x4.identity, drawingMtrl, 0, pass_draw_shadow);
}
if (isRenderTextureComposite)
{
cbAfterAlpha.CB.SetGlobalTexture(shadowVolumeColorRT, GetMainCamRT());
cbAfterAlpha.CB.Blit(null, GetCompositeRT(), drawingMtrl, pass_composite_shadow);
cbAfterAlpha.CB.ReleaseTemporaryRT(shadowVolumeRT);
if (IsShadowDistanceFadeEnabled())
{
cbAfterAlpha.CB.ReleaseTemporaryRT(shadowVolumeFadeRT);
}
}
}
