public Cubemap GetReflectionCubemap(IntPtr sessionHandle, IntPtr lightEstimateHandle)
{
// Cubemap.CreateExternalTexture only exists in Unity 2017 above.
#if UNITY_2017_2_OR_NEWER
int textureId = 0;
int size = 0;
bool usingGLES3 = SystemInfo.graphicsDeviceType == GraphicsDeviceType.OpenGLES3;
TextureFormat format = usingGLES3 ? TextureFormat.RGBAHalf : TextureFormat.RGBA32;
if (!m_PluginInitialized)
{
ExternApi.ARCoreRenderingUtils_SetGLESContext(usingGLES3);
m_PluginInitialized = true;
}
ExternApi.ARCoreRenderingUtils_GetCubemapTexture(ref textureId, ref size);
if (textureId != 0)
{
if (m_HDRCubemap == null || textureId != m_CubemaptextureId)
{
m_HDRCubemap = Cubemap.CreateExternalTexture(size, format, true,
new IntPtr(textureId));
}
}
long timestamp = GetTimestamp(sessionHandle, lightEstimateHandle);
if (m_CubemapTimestamp != timestamp)
{
ExternApi.ARCoreRenderingUtils_SetARCoreLightEstimation(sessionHandle,
lightEstimateHandle);
m_CubemapTimestamp = timestamp;
}
// Issue plugin event to update cubemap texture.
GL.IssuePluginEvent(ExternApi.ARCoreRenderingUtils_GetRenderEventFunc(), 1);
return(m_HDRCubemap);
#else
return(null);
#endif
}