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Improve Global Surface Atlas objects surfaces sampling

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This commit is contained in:
Wojciech Figat
2022-06-30 15:14:43 +02:00
parent db284c58a3
commit 27515585db
6 changed files with 48 additions and 61 deletions
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2
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
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@@ -461,7 +461,7 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
ddgiData.Result.Constants.ProbesOriginAndSpacing[cascadeIndex] = Float4(cascade.ProbesOrigin, cascade.ProbesSpacing);
ddgiData.Result.Constants.ProbesScrollOffsets[cascadeIndex] = Int4(cascade.ProbeScrollOffsets, 0);
}
ddgiData.Result.Constants.RayMaxDistance = 10000.0f; // TODO: adjust to match perf/quality ratio (make it based on Global SDF and Global Surface Atlas distance)
ddgiData.Result.Constants.RayMaxDistance = distance;
ddgiData.Result.Constants.ViewPos = renderContext.View.Position;
ddgiData.Result.Constants.RaysCount = probeRaysCount;
ddgiData.Result.Constants.ProbeHistoryWeight = probeHistoryWeight;

17
Source/Engine/Renderer/GI/GlobalSurfaceAtlasPass.cpp
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@@ -1232,19 +1232,20 @@ void GlobalSurfaceAtlasPass::RasterizeActor(Actor* actor, void* actorObject, con
_dirtyObjectsBuffer.Add(actorObject);
}
Matrix3x3 worldToLocalRotation;
Matrix3x3::RotationQuaternion(object->Bounds.Transformation.Orientation.Conjugated(), worldToLocalRotation);
Float3 worldPosition = object->Bounds.Transformation.Translation;
Float3 worldExtents = object->Bounds.Extents * object->Bounds.Transformation.Scale;
// Write to objects buffer (this must match unpacking logic in HLSL)
Matrix localToWorldBounds;
object->Bounds.Transformation.GetWorld(localToWorldBounds);
Matrix worldToLocalBounds;
Matrix::Invert(localToWorldBounds, worldToLocalBounds);
uint32 objectAddress = surfaceAtlasData.ObjectsBuffer.Data.Count() / sizeof(Float4);
auto* objectData = surfaceAtlasData.ObjectsBuffer.WriteReserve<Float4>(GLOBAL_SURFACE_ATLAS_OBJECT_DATA_STRIDE);
objectData[0] = *(Float4*)&actorObjectBounds;
objectData[1] = Float4::Zero;
objectData[2] = Float4(worldToLocalBounds.M11, worldToLocalBounds.M12, worldToLocalBounds.M13, worldToLocalBounds.M41);
objectData[3] = Float4(worldToLocalBounds.M21, worldToLocalBounds.M22, worldToLocalBounds.M23, worldToLocalBounds.M42);
objectData[4] = Float4(worldToLocalBounds.M31, worldToLocalBounds.M32, worldToLocalBounds.M33, worldToLocalBounds.M43);
objectData[5] = Float4(object->Bounds.Extents, useVisibility ? 1.0f : 0.0f);
objectData[2] = Float4(worldToLocalRotation.M11, worldToLocalRotation.M12, worldToLocalRotation.M13, worldPosition.X);
objectData[3] = Float4(worldToLocalRotation.M21, worldToLocalRotation.M22, worldToLocalRotation.M23, worldPosition.Y);
objectData[4] = Float4(worldToLocalRotation.M31, worldToLocalRotation.M32, worldToLocalRotation.M33, worldPosition.Z);
objectData[5] = Float4(worldExtents, useVisibility ? 1.0f : 0.0f);
auto tileOffsets = reinterpret_cast<uint16*>(&objectData[1]); // xyz used for tile offsets packed into uint16
auto objectDataSize = reinterpret_cast<uint32*>(&objectData[1].W); // w used for object size (count of Float4s for object+tiles)
*objectDataSize = GLOBAL_SURFACE_ATLAS_OBJECT_DATA_STRIDE;