public Cubemap GetReflectionCubemap(IntPtr sessionHandle, IntPtr lightEstimateHandle)
{
int size = 0;
bool usingGammaWorkflow = QualitySettings.activeColorSpace == ColorSpace.Gamma;
#if UNITY_2017_2_OR_NEWER
// Cubemap.CreateExternalTexture only exists in Unity 2017 above.
int textureId = 0;
ApiTextureDataType dataType =
SystemInfo.graphicsDeviceType == GraphicsDeviceType.OpenGLES3 ?
ApiTextureDataType.Half : ApiTextureDataType.Byte;
TextureFormat format = dataType == ApiTextureDataType.Half ?
TextureFormat.RGBAHalf : TextureFormat.RGBA32;
if (!_pluginInitialized)
{
ExternApi.ARCoreRenderingUtils_SetTextureDataType(dataType, true);
ExternApi.ARCoreRenderingUtils_SetActiveColorSpace(usingGammaWorkflow);
_pluginInitialized = true;
}
ExternApi.ARCoreRenderingUtils_GetCubemapTexture(ref textureId, ref size);
if (textureId != 0 && (_hdrCubemap == null || textureId != _cubemapTextureId))
{
_hdrCubemap = Cubemap.CreateExternalTexture(size, format, true,
new IntPtr(textureId));
_cubemapTextureId = textureId;
}
long timestamp = GetTimestamp(sessionHandle, lightEstimateHandle);
if (_cubemapTimestamp != timestamp)
{
ExternApi.ARCoreRenderingUtils_SetARCoreLightEstimation(sessionHandle,
lightEstimateHandle);
_cubemapTimestamp = timestamp;
}
// Issue plugin event to update cubemap texture.
GL.IssuePluginEvent(ExternApi.ARCoreRenderingUtils_GetRenderEventFunc(),
(int)ApiRenderEvent.UpdateCubemapTexture);
#else
// Gets raw color data from native plugin then update cubemap textures by
// Cubemap.SetPixel().
// Note, no GL texture will be created in this scenario.
if (!_pluginInitialized)
{
ExternApi.ARCoreRenderingUtils_SetTextureDataType(
ApiTextureDataType.Float, false);
ExternApi.ARCoreRenderingUtils_SetActiveColorSpace(usingGammaWorkflow);
_pluginInitialized = true;
}
ExternApi.ARCoreRenderingUtils_GetCubemapTexture(ref _cubemapTextureId, ref size);
if (size > 0)
{
if (_hdrCubemap == null)
{
_hdrCubemap = new Cubemap(size, TextureFormat.RGBAHalf, true);
}
if (_tempCubemapFacePixels.Length != size)
{
Array.Resize(ref _tempCubemapFacePixels, size * size);
}
}
long timestamp = GetTimestamp(sessionHandle, lightEstimateHandle);
if (_cubemapTimestamp != timestamp)
{
ExternApi.ARCoreRenderingUtils_SetARCoreLightEstimation(sessionHandle,
lightEstimateHandle);
_cubemapTimestamp = timestamp;
if (_hdrCubemap != null)
{
for (int i = 0; i < 6; i++)
{
ExternApi.ARCoreRenderingUtils_GetCubemapRawColors(i,
_tempCubemapFacePixels);
_hdrCubemap.SetPixels(_tempCubemapFacePixels, CubemapFace.PositiveX + i);
}
// This operation is very expensive, only update cubemap texture when
// the light estimate is updated in this frame.
_hdrCubemap.Apply();
}
}
#endif
return(_hdrCubemap);
}