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Add Global Surface Atlas objects redrawing

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This commit is contained in:
Wojciech Figat
2022-04-06 13:15:45 +02:00
parent 60d6e6b9ce
commit 34c0d6c442
2 changed files with 12 additions and 8 deletions
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Content/Shaders/GlobalSurfaceAtlas.flax (Stored with Git LFS)
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16
Source/Engine/Renderer/GlobalSurfaceAtlasPass.cpp
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@@ -60,6 +60,7 @@ struct GlobalSurfaceAtlasTile : RectPack<GlobalSurfaceAtlasTile, uint16>
struct GlobalSurfaceAtlasObject
{
uint64 LastFrameUsed;
uint64 LastFrameDirty;
GlobalSurfaceAtlasTile* Tiles[6] = {};
OrientedBoundingBox Bounds;
};
@@ -244,7 +245,7 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
const uint16 maxTileResolution = 128; // Maximum size (in texels) of the tile in atlas
const uint16 tileResolutionAlignment = 8; // Alignment to snap (down) tiles resolution which allows to reuse atlas slots once object gets resizes/replaced by other object
const float minObjectRadius = 20.0f; // Skip too small objects
const float tileTexelsPerWorldUnit = 1.0f / 10.0f; // Scales the tiles resolution
const float tileTexelsPerWorldUnit = 1.0f / 20.0f; // Scales the tiles resolution
const float distanceScalingStart = 2000.0f; // Distance from camera at which the tiles resolution starts to be scaled down
const float distanceScalingEnd = 5000.0f; // Distance from camera at which the tiles resolution end to be scaled down
const float distanceScaling = 0.1f; // The scale for tiles at distanceScalingEnd and further away
@@ -260,7 +261,6 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
auto* staticModel = ScriptingObject::Cast<StaticModel>(e.Actor);
if (staticModel && staticModel->Model && staticModel->Model->IsLoaded() && staticModel->Model->CanBeRendered())
{
const bool staticLight = staticModel->HasStaticFlag(StaticFlags::Lightmap);
Matrix localToWorld;
staticModel->GetWorld(&localToWorld);
bool anyTile = false, dirty = false;
@@ -299,10 +299,6 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
const uint16 currentSize = object->Tiles[tileIndex]->Width;
if (Math::Abs(tileResolution - currentSize) < tileRefitResolutionStep)
{
if (!staticLight)
{
// TODO: collect dirty tile to be rasterized once every X frames
}
anyTile = true;
continue;
}
@@ -327,12 +323,20 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
}
if (anyTile)
{
// Redraw objects from time-to-time (dynamic objects can be animated, static objects can have textures streamed)
uint32 redrawFramesCount = staticModel->HasStaticFlag(StaticFlags::Lightmap) ? 120 : 4;
if (currentFrame - object->LastFrameDirty >= (redrawFramesCount + (e.Actor->GetID().D & redrawFramesCount)))
dirty = true;
// Mark object as used
object->LastFrameUsed = currentFrame;
object->Bounds = OrientedBoundingBox(localBounds);
object->Bounds.Transform(localToWorld);
if (dirty || GLOBAL_SURFACE_ATLAS_DEBUG_FORCE_TILES_REDRAW)
{
object->LastFrameDirty = currentFrame;
_dirtyObjectsBuffer.Add(ToPair(e.Actor, object));
}
// TODO: populate ObjectsBuffer with objects tiles data
// Write to objects buffer (this must match unpacking logic in HLSL)