private bool CreateLayerTextures(bool useMipmaps, OVRPlugin.Sizei size, bool isHdr)
{
bool result = false;
if (this.stageCount <= 0)
{
return(false);
}
if (this.layerTextures == null)
{
this.frameIndex = 0;
this.layerTextures = new OVROverlay.LayerTexture[this.texturesPerStage];
}
for (int i = 0; i < this.texturesPerStage; i++)
{
if (this.layerTextures[i].swapChain == null)
{
this.layerTextures[i].swapChain = new Texture[this.stageCount];
}
if (this.layerTextures[i].swapChainPtr == null)
{
this.layerTextures[i].swapChainPtr = new IntPtr[this.stageCount];
}
for (int j = 0; j < this.stageCount; j++)
{
Texture texture = this.layerTextures[i].swapChain[j];
IntPtr intPtr = this.layerTextures[i].swapChainPtr[j];
if (!(texture != null) || !(intPtr != IntPtr.Zero))
{
if (intPtr == IntPtr.Zero)
{
intPtr = OVRPlugin.GetLayerTexture(this.layerId, j, (OVRPlugin.Eye)i);
}
if (!(intPtr == IntPtr.Zero))
{
TextureFormat format = (!isHdr) ? TextureFormat.RGBA32 : TextureFormat.RGBAHalf;
if (this.currentOverlayShape != OVROverlay.OverlayShape.Cubemap && this.currentOverlayShape != OVROverlay.OverlayShape.OffcenterCubemap)
{
texture = Texture2D.CreateExternalTexture(size.w, size.h, format, useMipmaps, true, intPtr);
}
this.layerTextures[i].swapChain[j] = texture;
this.layerTextures[i].swapChainPtr[j] = intPtr;
result = true;
}
}
}
}
return(result);
}
private bool CreateLayerTextures(bool useMipmaps, OVRPlugin.Sizei size, bool isHdr)
{
if (isExternalSurface)
{
if (externalSurfaceObject == System.IntPtr.Zero)
{
externalSurfaceObject = OVRPlugin.GetLayerAndroidSurfaceObject(layerId);
if (externalSurfaceObject != System.IntPtr.Zero)
{
Debug.LogFormat("GetLayerAndroidSurfaceObject returns {0}", externalSurfaceObject);
if (externalSurfaceObjectCreated != null)
{
externalSurfaceObjectCreated();
}
}
}
return(false);
}
bool needsCopy = false;
if (stageCount <= 0)
{
return(false);
}
// For newer SDKs, blit directly to the surface that will be used in compositing.
if (layerTextures == null)
{
layerTextures = new LayerTexture[texturesPerStage];
}
for (int eyeId = 0; eyeId < texturesPerStage; ++eyeId)
{
if (layerTextures[eyeId].swapChain == null)
{
layerTextures[eyeId].swapChain = new Texture[stageCount];
}
if (layerTextures[eyeId].swapChainPtr == null)
{
layerTextures[eyeId].swapChainPtr = new IntPtr[stageCount];
}
for (int stage = 0; stage < stageCount; ++stage)
{
Texture sc = layerTextures[eyeId].swapChain[stage];
IntPtr scPtr = layerTextures[eyeId].swapChainPtr[stage];
if (sc != null && scPtr != IntPtr.Zero && size.w == sc.width && size.h == sc.height)
{
continue;
}
if (scPtr == IntPtr.Zero)
{
scPtr = OVRPlugin.GetLayerTexture(layerId, stage, (OVRPlugin.Eye)eyeId);
}
if (scPtr == IntPtr.Zero)
{
continue;
}
var txFormat = (isHdr) ? TextureFormat.RGBAHalf : TextureFormat.RGBA32;
if (currentOverlayShape != OverlayShape.Cubemap && currentOverlayShape != OverlayShape.OffcenterCubemap)
{
sc = Texture2D.CreateExternalTexture(size.w, size.h, txFormat, useMipmaps, true, scPtr);
}
#if UNITY_2017_1_OR_NEWER
else
{
sc = Cubemap.CreateExternalTexture(size.w, txFormat, useMipmaps, scPtr);
}
#endif
layerTextures[eyeId].swapChain[stage] = sc;
layerTextures[eyeId].swapChainPtr[stage] = scPtr;
needsCopy = true;
}
}
return(needsCopy);
}
void Awake()
{
Debug.Log("Overlay Awake");
if (premultiplyMaterial == null)
{
premultiplyMaterial = new Material(Shader.Find("Oculus/Alpha Premultiply"));
}
rend = GetComponent <Renderer>();
if (textures.Length == 0)
{
textures = new Texture[] { null }
}
;
// Backward compatibility
if (rend != null && textures[0] == null)
{
textures[0] = rend.material.mainTexture;
}
if (textures[0] != null)
{
cachedTextures[0] = textures[0];
texNativePtrs[0] = textures[0].GetNativeTexturePtr();
}
#if UNITY_ANDROID && !UNITY_EDITOR
if (textures.Length == 2 && textures[1] != null)
{
layout = (isMultiviewEnabled) ? OVRPlugin.LayerLayout.Array : OVRPlugin.LayerLayout.Stereo;
}
texturesPerStage = (layout == OVRPlugin.LayerLayout.Stereo) ? 2 : 1;
#endif
}
void OnEnable()
{
if (!OVRManager.isHmdPresent)
{
enabled = false;
return;
}
OnDisable();
for (int i = 0; i < maxInstances; ++i)
{
if (instances[i] == null || instances[i] == this)
{
layerIndex = i;
instances[i] = this;
break;
}
}
layerIdHandle = GCHandle.Alloc(layerId, GCHandleType.Pinned);
layerIdPtr = layerIdHandle.AddrOfPinnedObject();
}
void OnDisable()
{
if (layerIndex != -1)
{
// Turn off the overlay if it was on.
OVRPlugin.EnqueueSubmitLayer(true, false, IntPtr.Zero, IntPtr.Zero, -1, 0, OVRPose.identity.ToPosef(), Vector3.one.ToVector3f(), layerIndex, (OVRPlugin.OverlayShape)_prevOverlayShape);
instances[layerIndex] = null;
}
if (layerIdPtr != IntPtr.Zero)
{
OVRPlugin.EnqueueDestroyLayer(layerIdPtr);
layerIdPtr = IntPtr.Zero;
layerIdHandle.Free();
}
layerIndex = -1;
}
int prevFrameIndex = -1;
void OnRenderObject()
{
// The overlay must be specified every eye frame, because it is positioned relative to the
// current head location. If frames are dropped, it will be time warped appropriately,
// just like the eye buffers.
if (!Camera.current.CompareTag("MainCamera") || Camera.current.cameraType != CameraType.Game || layerIndex == -1 || currentOverlayType == OverlayType.None || textures.Length < texturesPerStage)
{
return;
}
// Don't submit the same frame twice.
if (Time.frameCount <= prevFrameIndex)
{
return;
}
prevFrameIndex = Time.frameCount;
#if !UNITY_ANDROID || UNITY_EDITOR
if (currentOverlayShape == OverlayShape.OffcenterCubemap)
{
Debug.LogWarning("Overlay shape " + currentOverlayShape + " is not supported on current platform");
}
#endif
for (int i = 0; i < texturesPerStage; ++i)
{
if (textures[i] != cachedTextures[i])
{
cachedTextures[i] = textures[i];
if (cachedTextures[i] != null)
{
texNativePtrs[i] = cachedTextures[i].GetNativeTexturePtr();
}
}
if (currentOverlayShape == OverlayShape.Cubemap)
{
if (textures[i] != null && textures[i].GetType() != typeof(Cubemap))
{
Debug.LogError("Need Cubemap texture for cube map overlay");
return;
}
}
}
if (cachedTextures[0] == null || texNativePtrs[0] == IntPtr.Zero)
{
return;
}
bool overlay = (currentOverlayType == OverlayType.Overlay);
bool headLocked = false;
for (var t = transform; t != null && !headLocked; t = t.parent)
{
headLocked |= (t == Camera.current.transform);
}
OVRPose pose = (headLocked) ? transform.ToHeadSpacePose() : transform.ToTrackingSpacePose();
Vector3 scale = transform.lossyScale;
for (int i = 0; i < 3; ++i)
{
scale[i] /= Camera.current.transform.lossyScale[i];
}
#if !UNITY_ANDROID
if (currentOverlayShape == OverlayShape.Cubemap)
{
pose.position = Camera.current.transform.position;
}
#endif
// Pack the offsetCenter directly into pose.position for offcenterCubemap
if (currentOverlayShape == OverlayShape.OffcenterCubemap)
{
pose.position = transform.position;
if (pose.position.magnitude > 1.0f)
{
Debug.LogWarning("your cube map center offset's magnitude is greater than 1, which will cause some cube map pixel always invisible .");
}
}
// Cylinder overlay sanity checking
if (currentOverlayShape == OverlayShape.Cylinder)
{
float arcAngle = scale.x / scale.z / (float)Math.PI * 180.0f;
if (arcAngle > 180.0f)
{
Debug.LogError("Cylinder overlay's arc angle has to be below 180 degree, current arc angle is " + arcAngle + " degree.");
return;
}
}
OVRPlugin.Sizei size = new OVRPlugin.Sizei()
{
w = textures[0].width, h = textures[0].height
};
int flags = (int)OVRPlugin.LayerFlags.TextureOriginAtBottomLeft;
int mipLevels = 1;
int sampleCount = 1;
TextureFormat txFormat = TextureFormat.BGRA32;
OVRPlugin.EyeTextureFormat etFormat = OVRPlugin.EyeTextureFormat.B8G8R8A8_sRGB;
RenderTextureFormat rtFormat = RenderTextureFormat.BGRA32;
var tex2D = textures[0] as Texture2D;
if (tex2D != null)
{
if (tex2D.format == TextureFormat.RGBAHalf || tex2D.format == TextureFormat.RGBAFloat)
{
txFormat = TextureFormat.RGBAHalf;
etFormat = OVRPlugin.EyeTextureFormat.R16G16B16A16_FP;
rtFormat = RenderTextureFormat.ARGBHalf;
}
}
var rt = textures[0] as RenderTexture;
if (rt != null)
{
sampleCount = rt.antiAliasing;
if (rt.format == RenderTextureFormat.ARGBHalf)
{
txFormat = TextureFormat.RGBAHalf;
etFormat = OVRPlugin.EyeTextureFormat.R16G16B16A16_FP;
rtFormat = RenderTextureFormat.ARGBHalf;
}
}
bool needsSetup = (
!layerDesc.TextureSize.Equals(size) ||
layerDesc.SampleCount != sampleCount ||
layerDesc.LayerFlags != flags ||
layerDesc.Shape != (OVRPlugin.OverlayShape)currentOverlayShape ||
layerDesc.Layout != layout ||
layerDesc.Format != etFormat);
OVRPlugin.LayerDesc desc = new OVRPlugin.LayerDesc();
if (layerIdPtr != IntPtr.Zero && needsSetup)
{
if ((int)layerIdHandle.Target != 0)
{
OVRPlugin.EnqueueDestroyLayer(layerIdPtr);
}
desc = OVRPlugin.CalculateLayerDesc((OVRPlugin.OverlayShape)currentOverlayShape, layout, size, mipLevels, sampleCount, etFormat, flags);
OVRPlugin.EnqueueSetupLayer(desc, layerIdPtr);
layerId = (int)layerIdHandle.Target;
if (layerId > 0)
{
layerDesc = desc;
}
}
if (layerId > 0)
{
// For newer SDKs, blit directly to the surface that will be used in compositing.
int stageCount = OVRPlugin.GetLayerTextureStageCount(layerId);
if (externalTextures == null)
{
frameIndex = 0;
externalTextures = new Texture[texturesPerStage][];
}
for (int eyeId = 0; eyeId < texturesPerStage; ++eyeId)
{
if (externalTextures[eyeId] == null)
{
externalTextures[eyeId] = new Texture[stageCount];
}
int stage = frameIndex % stageCount;
IntPtr externalTex = OVRPlugin.GetLayerTexture(layerId, stage, (OVRPlugin.Eye)eyeId);
if (externalTex == IntPtr.Zero)
{
continue;
}
bool needsCopy = isDynamic;
Texture et = externalTextures[eyeId][stage];
if (et == null)
{
bool isSrgb = (etFormat == OVRPlugin.EyeTextureFormat.B8G8R8A8_sRGB || etFormat == OVRPlugin.EyeTextureFormat.R8G8B8A8_sRGB);
if (currentOverlayShape != OverlayShape.Cubemap && currentOverlayShape != OverlayShape.OffcenterCubemap)
{
et = Texture2D.CreateExternalTexture(size.w, size.h, txFormat, mipLevels > 1, isSrgb, externalTex);
}
#if UNITY_2017_1_OR_NEWER
else
{
//et = Cubemap.CreateExternalTexture(size.w, size.h, txFormat, mipLevels > 1, isSrgb, externalTex);
et = Cubemap.CreateExternalTexture(size.w, txFormat, isSrgb, externalTex);
}
#endif
externalTextures[eyeId][stage] = et;
needsCopy = true;
}
if (needsCopy)
{
// The compositor uses premultiplied alpha, so multiply it here.
if (currentOverlayShape != OverlayShape.Cubemap && currentOverlayShape != OverlayShape.OffcenterCubemap)
{
var tempRT = RenderTexture.GetTemporary(size.w, size.h, 0, rtFormat, RenderTextureReadWrite.Default, sampleCount);
#if UNITY_ANDROID && !UNITY_EDITOR
Graphics.Blit(textures[eyeId], tempRT); //Resolve, decompress, swizzle, etc not handled by simple CopyTexture.
#else
Graphics.Blit(textures[eyeId], tempRT, premultiplyMaterial);
#endif
Graphics.CopyTexture(tempRT, 0, 0, et, 0, 0);
RenderTexture.ReleaseTemporary(tempRT);
}
#if UNITY_2017_1_OR_NEWER
else
{
var tempRTSrc = RenderTexture.GetTemporary(size.w, size.h, 0, rtFormat, RenderTextureReadWrite.Default, sampleCount);
var tempRTDst = RenderTexture.GetTemporary(size.w, size.h, 0, rtFormat, RenderTextureReadWrite.Default, sampleCount);
for (int face = 0; face < 6; ++face)
{
//HACK: It would be much more efficient to blit directly from textures[eyeId] to et, but Unity's API doesn't support that.
//Suggest using a native plugin to render directly to a cubemap layer for 360 video, etc.
Graphics.CopyTexture(textures[eyeId], face, 0, tempRTSrc, 0, 0);
Graphics.Blit(tempRTSrc, tempRTDst, premultiplyMaterial);
Graphics.CopyTexture(tempRTDst, 0, 0, et, face, 0);
}
RenderTexture.ReleaseTemporary(tempRTSrc);
RenderTexture.ReleaseTemporary(tempRTDst);
}
#endif
}
}
bool isOverlayVisible = OVRPlugin.EnqueueSubmitLayer(overlay, headLocked, texNativePtrs[0], texNativePtrs[1], layerId, frameIndex, pose.flipZ().ToPosef(), scale.ToVector3f(), layerIndex, (OVRPlugin.OverlayShape)currentOverlayShape);
if (isDynamic)
{
++frameIndex;
}
_prevOverlayShape = currentOverlayShape;
if (rend)
{
rend.enabled = !isOverlayVisible;
}
}
}
}