public static void WriteTextureFileToDisk(Texture target, string filePath)
{
var rt = target as RenderTexture;
var cube = target as Cubemap;
if (rt != null)
{
var t2D = CopyRenderTextureToTexture2D(rt);
var bytes = t2D.EncodeToEXR(Texture2D.EXRFlags.CompressZIP);
HDBakingUtilities.CreateParentDirectoryIfMissing(filePath);
File.WriteAllBytes(filePath, bytes);
return;
}
else if (cube != null)
{
var t2D = new Texture2D(cube.width * 6, cube.height, GraphicsFormat.R16G16B16A16_SFloat, TextureCreationFlags.None);
var cmd = new CommandBuffer {
name = "CopyCubemapToTexture2D"
};
for (int i = 0; i < 6; ++i)
{
cmd.CopyTexture(
cube, i, 0, 0, 0, cube.width, cube.height,
t2D, 0, 0, cube.width * i, 0
);
}
Graphics.ExecuteCommandBuffer(cmd);
var bytes = t2D.EncodeToEXR(Texture2D.EXRFlags.CompressZIP);
HDBakingUtilities.CreateParentDirectoryIfMissing(filePath);
File.WriteAllBytes(filePath, bytes);
return;
}
throw new ArgumentException();
}
internal static void RenderAndWriteToFile(
HDProbe probe, string targetFile,
RenderTexture cubeRT, RenderTexture planarRT
)
{
var settings = probe.settings;
switch (settings.type)
{
case ProbeSettings.ProbeType.ReflectionProbe:
{
var positionSettings = ProbeCapturePositionSettings.ComputeFrom(probe, null);
HDRenderUtilities.Render(probe.settings, positionSettings, cubeRT,
forceFlipY: true,
forceInvertBackfaceCulling: true, // Cubemap have an RHS standard, so we need to invert the face culling
(uint)StaticEditorFlags.ReflectionProbeStatic
);
HDBakingUtilities.CreateParentDirectoryIfMissing(targetFile);
if (Provider.isActive && HDEditorUtils.IsAssetPath(targetFile))
{
Checkout(targetFile, CheckoutMode.Both);
}
HDTextureUtilities.WriteTextureFileToDisk(cubeRT, targetFile);
break;
}
case ProbeSettings.ProbeType.PlanarProbe:
{
var planarProbe = (PlanarReflectionProbe)probe;
var positionSettings = ProbeCapturePositionSettings.ComputeFromMirroredReference(
probe,
planarProbe.referencePosition
);
HDRenderUtilities.Render(
settings,
positionSettings,
planarRT,
out var cameraSettings, out var cameraPositionSettings
);
HDBakingUtilities.CreateParentDirectoryIfMissing(targetFile);
if (Provider.isActive && HDEditorUtils.IsAssetPath(targetFile))
{
Checkout(targetFile, CheckoutMode.Both);
}
HDTextureUtilities.WriteTextureFileToDisk(planarRT, targetFile);
var renderData = new HDProbe.RenderData(cameraSettings, cameraPositionSettings);
var targetRenderDataFile = targetFile + ".renderData";
if (Provider.isActive && HDEditorUtils.IsAssetPath(targetRenderDataFile))
{
Checkout(targetRenderDataFile, CheckoutMode.Both);
}
HDBakingUtilities.TrySerializeToDisk(renderData, targetRenderDataFile);
break;
}
}
}
internal static void RenderAndWriteToFile(
HDProbe probe, string targetFile,
RenderTexture cubeRT, RenderTexture planarRT
)
{
var settings = probe.settings;
switch (settings.type)
{
case ProbeSettings.ProbeType.ReflectionProbe:
{
var positionSettings = ProbeCapturePositionSettings.ComputeFrom(probe, null);
HDRenderUtilities.Render(probe.settings, positionSettings, cubeRT,
forceFlipY: true,
forceInvertBackfaceCulling: true, // TODO: for an unknown reason, we need to invert the backface culling for baked reflection probes, Remove this
(uint)StaticEditorFlags.ReflectionProbeStatic
);
HDBakingUtilities.CreateParentDirectoryIfMissing(targetFile);
HDTextureUtilities.WriteTextureFileToDisk(cubeRT, targetFile);
break;
}
case ProbeSettings.ProbeType.PlanarProbe:
{
var planarProbe = (PlanarReflectionProbe)probe;
var positionSettings = ProbeCapturePositionSettings.ComputeFromMirroredReference(
probe,
planarProbe.referencePosition
);
HDRenderUtilities.Render(
settings,
positionSettings,
planarRT,
out CameraSettings cameraSettings, out CameraPositionSettings cameraPositionSettings
);
HDBakingUtilities.CreateParentDirectoryIfMissing(targetFile);
HDTextureUtilities.WriteTextureFileToDisk(planarRT, targetFile);
var renderData = new HDProbe.RenderData(cameraSettings, cameraPositionSettings);
HDBakingUtilities.TrySerializeToDisk(renderData, targetFile + ".renderData");
break;
}
}
}
internal static void RenderAndWriteToFile(
HDProbe probe, string targetFile,
RenderTexture cubeRT, RenderTexture planarRT
)
{
var settings = probe.settings;
switch (settings.type)
{
case ProbeSettings.ProbeType.ReflectionProbe:
{
var positionSettings = ProbeCapturePositionSettings.ComputeFrom(probe, null);
HDRenderUtilities.Render(probe.settings, positionSettings, cubeRT, forceFlipY: true);
HDBakingUtilities.CreateParentDirectoryIfMissing(targetFile);
HDTextureUtilities.WriteTextureFileToDisk(cubeRT, targetFile);
break;
}
case ProbeSettings.ProbeType.PlanarProbe:
{
var planarProbe = (PlanarReflectionProbe)probe;
var positionSettings = ProbeCapturePositionSettings.ComputeFromMirroredReference(
probe,
planarProbe.referencePosition
);
HDRenderUtilities.Render(
settings,
positionSettings,
planarRT,
out CameraSettings cameraSettings, out CameraPositionSettings cameraPositionSettings
);
HDBakingUtilities.CreateParentDirectoryIfMissing(targetFile);
HDTextureUtilities.WriteTextureFileToDisk(planarRT, targetFile);
var renderData = new HDProbe.RenderData(cameraSettings, cameraPositionSettings);
HDBakingUtilities.TrySerializeToDisk(renderData, targetFile + ".renderData");
break;
}
}
}
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);
Checkout(bakedTexturePath);
// 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);
}