public override void Tick(
SceneStateHash sceneStateHash,
IScriptableBakedReflectionSystemStageNotifier handle
)
{
if (!AreAllOpenedSceneSaved())
{
handle.SetIsDone(true);
return;
}
// On the C# side, we don't have non blocking asset import APIs, and we don't want to block the
// UI when the user is editing the world.
// So, we skip the baking when the user is editing any UI control.
if (GUIUtility.hotControl != 0)
{
return;
}
if (!IsCurrentSRPValid(out HDRenderPipeline hdPipeline))
{
if (ShouldIssueWarningForCurrentSRP())
{
Debug.LogWarning("HDBakedReflectionSystem work with HDRP, " +
"please switch your render pipeline or use another reflection system");
}
handle.ExitStage((int)BakingStages.ReflectionProbes);
handle.SetIsDone(true);
return;
}
var ambientProbeHash = sceneStateHash.ambientProbeHash;
var sceneObjectsHash = sceneStateHash.sceneObjectsHash;
var skySettingsHash = sceneStateHash.skySettingsHash;
DeleteCubemapAssets(true);
// Explanation of the algorithm:
// 1. First we create the hash of the world that can impact the reflection probes.
// 2. Then for each probe, we calculate a hash that represent what this specific probe should have baked.
// 3. We compare those hashes against the baked one and decide:
// a. If we have to remove a baked data
// b. If we have to bake a probe
// 4. Bake all required probes
// 5. Remove unused baked data
// 6. Update probe assets
// == 1. ==
var allProbeDependencyHash = new Hash128();
// TODO: All baked probes depend on custom probes (hash all custom probes and set as dependency)
// TODO: All baked probes depend on HDRP specific Light settings
HashUtilities.AppendHash(ref ambientProbeHash, ref allProbeDependencyHash);
HashUtilities.AppendHash(ref sceneObjectsHash, ref allProbeDependencyHash);
HashUtilities.AppendHash(ref skySettingsHash, ref allProbeDependencyHash);
var bakedProbes = HDProbeSystem.bakedProbes;
// == 2. ==
var states = stackalloc HDProbeBakingState[bakedProbes.Count];
ComputeProbeInstanceID(bakedProbes, states);
ComputeProbeSettingsHashes(bakedProbes, states);
// TODO: Handle bounce dependency here
ComputeProbeBakingHashes(bakedProbes.Count, allProbeDependencyHash, states);
CoreUnsafeUtils.QuickSort <HDProbeBakingState, Hash128, HDProbeBakingState.ProbeBakingHash>(
bakedProbes.Count, states
);
int operationCount = 0, addCount = 0, remCount = 0;
var maxProbeCount = Mathf.Max(bakedProbes.Count, m_HDProbeBakedStates.Length);
var addIndices = stackalloc int[maxProbeCount];
var remIndices = stackalloc int[maxProbeCount];
if (m_HDProbeBakedStates.Length == 0)
{
for (int i = 0; i < bakedProbes.Count; ++i)
{
addIndices[addCount++] = i;
}
operationCount = addCount;
}
else
{
fixed(HDProbeBakedState *oldBakedStates = &m_HDProbeBakedStates[0])
{
// == 3. ==
// Compare hashes between baked probe states and desired probe states
operationCount = CoreUnsafeUtils.CompareHashes <
HDProbeBakedState, HDProbeBakedState.ProbeBakedHash,
HDProbeBakingState, HDProbeBakingState.ProbeBakingHash
> (
m_HDProbeBakedStates.Length, oldBakedStates, // old hashes
bakedProbes.Count, states, // new hashes
addIndices, remIndices,
out addCount, out remCount
);
}
}
if (operationCount > 0)
{
// == 4. ==
var cubemapSize = (int)hdPipeline.currentPlatformRenderPipelineSettings.lightLoopSettings.reflectionCubemapSize;
var planarSize = (int)hdPipeline.currentPlatformRenderPipelineSettings.lightLoopSettings.planarReflectionTextureSize;
var cubeRT = HDRenderUtilities.CreateReflectionProbeRenderTarget(cubemapSize);
var planarRT = HDRenderUtilities.CreatePlanarProbeRenderTarget(planarSize);
handle.EnterStage(
(int)BakingStages.ReflectionProbes,
string.Format("Reflection Probes | {0} jobs", addCount),
0
);
// Render probes
for (int i = 0; i < addCount; ++i)
{
handle.EnterStage(
(int)BakingStages.ReflectionProbes,
string.Format("Reflection Probes | {0} jobs", addCount),
i / (float)addCount
);
var index = addIndices[i];
var instanceId = states[index].instanceID;
var probe = (HDProbe)EditorUtility.InstanceIDToObject(instanceId);
var cacheFile = GetGICacheFileForHDProbe(states[index].probeBakingHash);
// Get from cache or render the probe
if (!File.Exists(cacheFile))
{
RenderAndWriteToFile(probe, cacheFile, cubeRT, planarRT);
}
}
cubeRT.Release();
planarRT.Release();
// Copy texture from cache
for (int i = 0; i < addCount; ++i)
{
var index = addIndices[i];
var instanceId = states[index].instanceID;
var probe = (HDProbe)EditorUtility.InstanceIDToObject(instanceId);
var cacheFile = GetGICacheFileForHDProbe(states[index].probeBakingHash);
Assert.IsTrue(File.Exists(cacheFile));
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
HDBakingUtilities.CreateParentDirectoryIfMissing(bakedTexturePath);
if (Provider.isActive && File.Exists(bakedTexturePath))
{
Checkout(bakedTexturePath, CheckoutMode.Both);
}
// Checkout will make those file writeable, but this is not immediate,
// so we retries when this fails.
if (!HDEditorUtils.CopyFileWithRetryOnUnauthorizedAccess(cacheFile, bakedTexturePath))
{
return;
}
}
// AssetPipeline bug
// Sometimes, the baked texture reference is destroyed during 'AssetDatabase.StopAssetEditing()'
// thus, the reference to the baked texture in the probe is lost
// Although, importing twice the texture seems to workaround the issue
for (int j = 0; j < 2; ++j)
{
AssetDatabase.StartAssetEditing();
for (int i = 0; i < bakedProbes.Count; ++i)
{
var index = addIndices[i];
var instanceId = states[index].instanceID;
var probe = (HDProbe)EditorUtility.InstanceIDToObject(instanceId);
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
AssetDatabase.ImportAsset(bakedTexturePath);
ImportAssetAt(probe, bakedTexturePath);
}
AssetDatabase.StopAssetEditing();
}
// Import assets
AssetDatabase.StartAssetEditing();
for (int i = 0; i < addCount; ++i)
{
var index = addIndices[i];
var instanceId = states[index].instanceID;
var probe = (HDProbe)EditorUtility.InstanceIDToObject(instanceId);
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
var bakedTexture = AssetDatabase.LoadAssetAtPath <Texture>(bakedTexturePath);
Assert.IsNotNull(bakedTexture, "The baked texture was imported before, " +
"so it must exists in AssetDatabase");
probe.SetTexture(ProbeSettings.Mode.Baked, bakedTexture);
EditorUtility.SetDirty(probe);
}
AssetDatabase.StopAssetEditing();
// == 5. ==
// Create new baked state array
var targetSize = m_HDProbeBakedStates.Length + addCount - remCount;
var targetBakedStates = stackalloc HDProbeBakedState[targetSize];
// Copy baked state that are not removed
var targetI = 0;
for (int i = 0; i < m_HDProbeBakedStates.Length; ++i)
{
if (CoreUnsafeUtils.IndexOf(remIndices, remCount, i) != -1)
{
continue;
}
targetBakedStates[targetI++] = m_HDProbeBakedStates[i];
}
// Add new baked states
for (int i = 0; i < addCount; ++i)
{
var state = states[addIndices[i]];
targetBakedStates[targetI++] = new HDProbeBakedState
{
instanceID = state.instanceID,
probeBakedHash = state.probeBakingHash
};
}
CoreUnsafeUtils.QuickSort <HDProbeBakedState, Hash128, HDProbeBakedState.ProbeBakedHash>(
targetI, targetBakedStates
);
Array.Resize(ref m_HDProbeBakedStates, targetSize);
if (targetSize > 0)
{
fixed(HDProbeBakedState *bakedStates = &m_HDProbeBakedStates[0])
{
UnsafeUtility.MemCpy(
bakedStates,
targetBakedStates,
sizeof(HDProbeBakedState) * targetSize
);
}
}
// Update state hash
Array.Resize(ref m_StateHashes, m_HDProbeBakedStates.Length);
for (int i = 0; i < m_HDProbeBakedStates.Length; ++i)
{
m_StateHashes[i] = m_HDProbeBakedStates[i].probeBakedHash;
}
stateHashes = m_StateHashes;
}
handle.ExitStage((int)BakingStages.ReflectionProbes);
handle.SetIsDone(true);
}
public static bool BakeProbes(IList <HDProbe> bakedProbes)
{
if (!(RenderPipelineManager.currentPipeline is HDRenderPipeline hdPipeline))
{
Debug.LogWarning("HDBakedReflectionSystem work with HDRP, " +
"please switch your render pipeline or use another reflection system");
return(false);
}
var cubemapSize = (int)hdPipeline.currentPlatformRenderPipelineSettings.lightLoopSettings.reflectionCubemapSize;
var planarSize = (int)hdPipeline.currentPlatformRenderPipelineSettings.lightLoopSettings.planarReflectionTextureSize;
var cubeRT = HDRenderUtilities.CreateReflectionProbeRenderTarget(cubemapSize);
var planarRT = HDRenderUtilities.CreatePlanarProbeRenderTarget(planarSize);
// Render and write the result to disk
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
RenderAndWriteToFile(probe, bakedTexturePath, cubeRT, planarRT);
}
// AssetPipeline bug
// Sometimes, the baked texture reference is destroyed during 'AssetDatabase.StopAssetEditing()'
// thus, the reference to the baked texture in the probe is lost
// Although, importing twice the texture seems to workaround the issue
for (int j = 0; j < 2; ++j)
{
AssetDatabase.StartAssetEditing();
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
AssetDatabase.ImportAsset(bakedTexturePath);
ImportAssetAt(probe, bakedTexturePath);
}
AssetDatabase.StopAssetEditing();
}
AssetDatabase.StartAssetEditing();
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
// Get or create the baked texture asset for the probe
var bakedTexture = AssetDatabase.LoadAssetAtPath <Texture>(bakedTexturePath);
Assert.IsNotNull(bakedTexture, "The baked texture was imported before, " +
"so it must exists in AssetDatabase");
// Update import settings
ImportAssetAt(probe, bakedTexturePath);
probe.SetTexture(ProbeSettings.Mode.Baked, bakedTexture);
AssignRenderData(probe, bakedTexturePath);
EditorUtility.SetDirty(probe);
}
AssetDatabase.StopAssetEditing();
// case 1158677
// The AssetPipeline will destroy and recreate the textures
// So all transient data will be lost after the call to `AssetDatabase.StopAssetEditing`
// Here, we increment the updateCount to with an arbitrary number to force the reflection probe cache
// to update the texture.
// updateCount is a transient data, so don't execute this code before the asset reload.
{
UnityEngine.Random.InitState((int)Time.realtimeSinceStartup);
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var c = UnityEngine.Random.Range(2, 10);
while (probe.texture.updateCount < c)
{
probe.texture.IncrementUpdateCount();
}
}
}
cubeRT.Release();
planarRT.Release();
return(true);
}
public static bool BakeProbes(IList <HDProbe> bakedProbes)
{
if (!(RenderPipelineManager.currentPipeline is HDRenderPipeline hdPipeline))
{
Debug.LogWarning("HDBakedReflectionSystem work with HDRP, " +
"please switch your render pipeline or use another reflection system");
return(false);
}
var cubemapSize = (int)hdPipeline.currentPlatformRenderPipelineSettings.lightLoopSettings.reflectionCubemapSize;
var planarSize = (int)hdPipeline.currentPlatformRenderPipelineSettings.lightLoopSettings.planarReflectionTextureSize;
var cubeRT = HDRenderUtilities.CreateReflectionProbeRenderTarget(cubemapSize);
var planarRT = HDRenderUtilities.CreatePlanarProbeRenderTarget(planarSize);
// Render and write the result to disk
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
RenderAndWriteToFile(probe, bakedTexturePath, cubeRT, planarRT);
}
// AssetPipeline bug
// Sometimes, the baked texture reference is destroyed during 'AssetDatabase.StopAssetEditing()'
// thus, the reference to the baked texture in the probe is lost
// Although, importing twice the texture seems to workaround the issue
for (int j = 0; j < 2; ++j)
{
AssetDatabase.StartAssetEditing();
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
AssetDatabase.ImportAsset(bakedTexturePath);
ImportAssetAt(probe, bakedTexturePath);
}
AssetDatabase.StopAssetEditing();
}
AssetDatabase.StartAssetEditing();
for (int i = 0; i < bakedProbes.Count; ++i)
{
var probe = bakedProbes[i];
var bakedTexturePath = HDBakingUtilities.GetBakedTextureFilePath(probe);
// Get or create the baked texture asset for the probe
var bakedTexture = AssetDatabase.LoadAssetAtPath <Texture>(bakedTexturePath);
Assert.IsNotNull(bakedTexture, "The baked texture was imported before, " +
"so it must exists in AssetDatabase");
// Update import settings
ImportAssetAt(probe, bakedTexturePath);
probe.SetTexture(ProbeSettings.Mode.Baked, bakedTexture);
AssignRenderData(probe, bakedTexturePath);
EditorUtility.SetDirty(probe);
}
AssetDatabase.StopAssetEditing();
cubeRT.Release();
planarRT.Release();
return(true);
}