public static extern void ARCoreRenderingUtils_SetTextureDataType(
ApiTextureDataType texture_data_type, bool create_gl_texture);
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 (!m_PluginInitialized)
{
ExternApi.ARCoreRenderingUtils_SetTextureDataType(dataType, true);
ExternApi.ARCoreRenderingUtils_SetActiveColorSpace(usingGammaWorkflow);
m_PluginInitialized = true;
}
ExternApi.ARCoreRenderingUtils_GetCubemapTexture(ref textureId, ref size);
if (textureId != 0 && (m_HDRCubemap == null || textureId != m_CubemapTextureId))
{
m_HDRCubemap = Cubemap.CreateExternalTexture(size, format, true,
new IntPtr(textureId));
m_CubemapTextureId = 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);
#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 (!m_PluginInitialized)
{
ExternApi.ARCoreRenderingUtils_SetTextureDataType(
ApiTextureDataType.Float, false);
ExternApi.ARCoreRenderingUtils_SetActiveColorSpace(usingGammaWorkflow);
m_PluginInitialized = true;
}
ExternApi.ARCoreRenderingUtils_GetCubemapTexture(ref m_CubemapTextureId, ref size);
if (size > 0)
{
if (m_HDRCubemap == null)
{
m_HDRCubemap = new Cubemap(size, TextureFormat.RGBAHalf, true);
}
if (m_TempCubemapFacePixels.Length != size)
{
Array.Resize(ref m_TempCubemapFacePixels, size * size);
}
}
long timestamp = GetTimestamp(sessionHandle, lightEstimateHandle);
if (m_CubemapTimestamp != timestamp)
{
ExternApi.ARCoreRenderingUtils_SetARCoreLightEstimation(sessionHandle,
lightEstimateHandle);
m_CubemapTimestamp = timestamp;
if (m_HDRCubemap != null)
{
for (int i = 0; i < 6; i++)
{
ExternApi.ARCoreRenderingUtils_GetCubemapRawColors(i,
m_TempCubemapFacePixels);
m_HDRCubemap.SetPixels(m_TempCubemapFacePixels, CubemapFace.PositiveX + i);
}
// This operation is very expensive, only update cubemap texture when
// the light estimate is updated in this frame.
m_HDRCubemap.Apply();
}
}
#endif
return(m_HDRCubemap);
}
