private void UpdateCachedTexture(GITextureType textureType)
{
if (isIndexBased)
{
if (isRealtimeLightmap)
{
Hash128[] mainHashes = Lightmapping.GetMainSystemHashes();
if (!m_RealtimeTextureHash.isValid || !mainHashes.Contains(m_RealtimeTextureHash))
{
m_RealtimeTextureHash = mainHashes.ElementAtOrDefault(m_LightmapIndex);
}
}
}
else // instance based
{
if (isRealtimeLightmap)
{
Hash128 systemHash;
if (!Lightmapping.GetInputSystemHash(m_InstanceID, out systemHash))
{
m_CachedTexture.textureAvailability = GITextureAvailability.GITextureNotAvailable;
return;
}
m_RealtimeTextureHash = systemHash;
}
else
{
int lightmapIndex;
if (!Lightmapping.GetLightmapIndex(m_InstanceID, out lightmapIndex))
{
m_CachedTexture.textureAvailability = GITextureAvailability.GITextureNotAvailable;
return;
}
m_LightmapIndex = lightmapIndex;
}
}
Hash128 contentHash = isRealtimeLightmap ? LightmapVisualizationUtility.GetRealtimeGITextureHash(m_RealtimeTextureHash, textureType) :
LightmapVisualizationUtility.GetBakedGITextureHash(m_LightmapIndex, m_InstanceID, textureType);
// if we need to fetch a new texture
if (m_CachedTexture.texture == null || m_CachedTexture.type != textureType || m_CachedTexture.contentHash != contentHash || m_CachedTexture.contentHash == new Hash128())
{
m_CachedTexture = isRealtimeLightmap ?
LightmapVisualizationUtility.GetRealtimeGITexture(m_RealtimeTextureHash, textureType) :
LightmapVisualizationUtility.GetBakedGITexture(m_LightmapIndex, m_InstanceID, textureType);
}
if (!m_ShowUVOverlay)
{
return; // if we don't wanna show any overlay
}
if (m_CachedTexture.texture == null || m_CachedTexture.textureAvailability == GITextureAvailability.GITextureNotAvailable || m_CachedTexture.textureAvailability == GITextureAvailability.GITextureUnknown)
{
return; // if we dont have a texture
}
// fetch Renderers
if (isRealtimeLightmap)
{
m_CachedTextureObjects = LightmapVisualizationUtility.GetRealtimeGITextureRenderers(m_RealtimeTextureHash);
}
else if (LightmapVisualizationUtility.IsAtlasTextureType(textureType))
{
m_CachedTextureObjects = LightmapVisualizationUtility.GetBakedGITextureRenderers(m_LightmapIndex);
}
else // if it's an instance based baked lightmap, we only have 1 object in it
{
m_CachedTextureObjects = new GameObject[] {}
};
}