public static void RenderScenePreview(Transform origin, PreviewTextures textures)
{
var pos = origin.position;
var rot = origin.rotation;
ReinitializeRenderPipeline();
var previewRootPrefab = AssetDatabase.LoadAssetAtPath <GameObject>("Assets/Prefabs/ScenePreviewRoot.prefab");
var previewRoot = Object.Instantiate(previewRootPrefab);
previewRoot.transform.rotation = rot;
previewRoot.transform.position = pos;
var camera = previewRoot.GetComponentInChildren <Camera>();
// This will trigger HDCamera.Update, which must be done before calling HDCamera.GetOrCreate
// Otherwise m_AdditionalCameraData will not be set and HDCamera will be discarded after first frame
camera.Render();
var hdSettings = camera.GetComponent <HDAdditionalCameraData>();
hdSettings.hasPersistentHistory = true;
var hd = HDCamera.GetOrCreate(camera);
var volume = previewRoot.GetComponentInChildren <Volume>();
var pointCloudRenderers = Object.FindObjectsOfType <NodeTreeRenderer>();
foreach (var pointCloudRenderer in pointCloudRenderers)
{
pointCloudRenderer.UpdateImmediate(camera);
}
Render(hd, textures, volume);
Object.DestroyImmediate(previewRoot);
}
public static void RenderVehiclePreview(string vehicleAssetFile, PreviewTextures textures)
{
ReinitializeRenderPipeline();
var cameraObj = GameObject.Find("PreviewCamera");
var camera = cameraObj == null ? null : cameraObj.GetComponent <Camera>();
if (camera == null)
{
Debug.LogError("Camera for vehicle preview was not found. Preview won't be available.");
return;
}
var volume = Object.FindObjectOfType <Volume>();
if (volume == null)
{
Debug.LogError("Volume for vehicle preview was not found. Preview won't be available.");
return;
}
var vehiclePrefab = AssetDatabase.LoadAssetAtPath <GameObject>(vehicleAssetFile);
var vehicleParent = GameObject.Find("VehicleParent");
var vehicle = vehicleParent != null
? Object.Instantiate(vehiclePrefab, vehicleParent.transform)
: Object.Instantiate(vehiclePrefab);
vehicle.transform.localRotation = Quaternion.identity;
vehicle.transform.localPosition = Vector3.zero;
// adjust camera distance based on hit distance
RaycastHit hit;
var start = cameraObj.transform.position;
var end = vehicle.transform.position;
var direction = (end - start);
Ray cameraRay = new Ray(start, direction);
if (Physics.Raycast(cameraRay, out hit, LayerMask.GetMask("Agent")))
{
cameraObj.transform.position = hit.point + ((cameraObj.transform.position - hit.point).normalized) * 3f;
}
// This will trigger HDCamera.Update, which must be done before calling HDCamera.GetOrCreate
// Otherwise m_AdditionalCameraData will not be set and HDCamera will be discarded after first frame
camera.Render();
var hdSettings = camera.GetComponent <HDAdditionalCameraData>();
hdSettings.hasPersistentHistory = true;
var hd = HDCamera.GetOrCreate(camera);
Render(hd, textures, volume);
Object.DestroyImmediate(vehicle);
}
private static void Render(HDCamera hd, PreviewTextures textures, Volume volume)
{
var camera = hd.camera;
var hdrp = RenderPipelineManager.currentPipeline as HDRenderPipeline;
hdrp?.RequestSkyEnvironmentUpdate();
var largeRes = new Vector2Int(textures[0].width, textures[0].height);
var largeRt = RenderTexture.GetTemporary(largeRes.x, largeRes.y, 24);
camera.targetTexture = largeRt;
// Physically based sky renderer builds up bounces over multiple frames, modifying indirect light
// Render some frames in advance here so that all lighting is fully calculated for previews
const int maxCalls = 20;
var calls = 0;
do
{
camera.Render();
largeRt.IncrementUpdateCount();
} while (calls++ < maxCalls && !SkyDone(volume, hd));
if (!SkyDone(volume, hd))
{
LogSkyData(volume, hd);
Debug.LogError($"Preview rendering failed - sky not initialized");
}
camera.Render();
largeRt.IncrementUpdateCount();
for (var i = 2; i >= 0; i--)
{
var res = new Vector2Int(textures[i].width, textures[i].height);
var rt = i == 0 ? largeRt : RenderTexture.GetTemporary(res.x, res.y, 24);
if (i != 0)
{
Graphics.Blit(largeRt, rt);
rt.IncrementUpdateCount();
}
RenderTexture.active = rt;
textures[i].ReadPixels(new Rect(0, 0, res.x, res.y), 0, 0);
RenderTexture.active = null;
RenderTexture.ReleaseTemporary(rt);
}
}
public static void RenderScenePreview(Transform origin, PreviewTextures textures, bool forcePreview)
{
var pos = origin.position;
var rot = origin.rotation;
ReinitializeRenderPipeline();
var hasReflectionProbes = Object.FindObjectOfType <ReflectionProbe>() != null;
var volumes = Object.FindObjectsOfType <Volume>();
Volume volume = null;
IndirectLightingController indirectLightingController = null;
foreach (var vol in volumes)
{
if (vol.isGlobal && volume == null)
{
volume = vol;
continue;
}
var collider = vol.GetComponent <Collider>();
if (collider.bounds.Contains(pos))
{
volume = vol;
break;
}
}
var previewRootPrefab = AssetDatabase.LoadAssetAtPath <GameObject>("Assets/Prefabs/ScenePreviewRoot.prefab");
var previewRoot = Object.Instantiate(previewRootPrefab, pos, rot);
var camera = previewRoot.GetComponentInChildren <Camera>();
if (forcePreview)
{
previewRoot.transform.SetPositionAndRotation(pos, Quaternion.Euler(new Vector3(0f, rot.eulerAngles.y, 0f)));
camera.transform.SetParent(null);
camera.transform.SetPositionAndRotation(pos, rot);
}
// This will trigger HDCamera.Update, which must be done before calling HDCamera.GetOrCreate
// Otherwise m_AdditionalCameraData will not be set and HDCamera will be discarded after first frame
camera.Render();
var hdSettings = camera.GetComponent <HDAdditionalCameraData>();
hdSettings.hasPersistentHistory = true;
var hd = HDCamera.GetOrCreate(camera);
if (volume == null)
{
volume = previewRoot.GetComponentInChildren <Volume>();
}
// CullingResults in first frame after loading scene does not contain aby data about reflection probes.
// Light loop will use further options, which usually means skybox indirect reflections. This ignores
// occlusion and will break interior lighting. Due to lack of other options, just disable indirect specular
// lighting for preview rendering.
indirectLightingController = volume.profile.components.FirstOrDefault(x => x is IndirectLightingController) as IndirectLightingController;
var indirectControllerAdded = hasReflectionProbes && indirectLightingController == null;
if (indirectControllerAdded)
{
indirectLightingController = volume.profile.Add <IndirectLightingController>();
}
var indirectMultiplier = indirectLightingController == null ? 0f : indirectLightingController.reflectionLightingMultiplier.value;
if (hasReflectionProbes && indirectLightingController != null)
{
indirectLightingController.reflectionLightingMultiplier.value = 0f;
}
var pointCloudRenderers = Object.FindObjectsOfType <NodeTreeRenderer>();
foreach (var pointCloudRenderer in pointCloudRenderers)
{
pointCloudRenderer.UpdateImmediate(camera);
}
Render(hd, textures, volume);
if (hasReflectionProbes && indirectLightingController != null)
{
indirectLightingController.reflectionLightingMultiplier.value = indirectMultiplier;
}
if (indirectControllerAdded && indirectLightingController != null)
{
volume.profile.Remove <IndirectLightingController>();
}
Object.DestroyImmediate(previewRoot);
}
