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Add Global Surface Atlas automatic defragmentation on insertion failure

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This commit is contained in:
Wojciech Figat
2022-04-12 11:10:38 +02:00
parent db08204ead
commit 74b95a6ebb
1 changed files with 27 additions and 7 deletions
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Source/Engine/Renderer/GlobalSurfaceAtlasPass.cpp
+27 -7
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@@ -100,6 +100,8 @@ class GlobalSurfaceAtlasCustomBuffer : public RenderBuffers::CustomBuffer
{
public:
int32 Resolution = 0;
uint64 LastFrameAtlasInsertFail = 0;
uint64 LastFrameAtlasDefragmentation = 0;
GPUTexture* AtlasDepth = nullptr;
GPUTexture* AtlasGBuffer0 = nullptr;
GPUTexture* AtlasGBuffer1 = nullptr;
@@ -115,6 +117,14 @@ public:
{
}
FORCE_INLINE void ClearObjects()
{
LastFrameAtlasDefragmentation = Engine::FrameCount;
SAFE_DELETE(AtlasTiles);
ObjectsBuffer.Clear();
Objects.Clear();
}
FORCE_INLINE void Clear()
{
RenderTargetPool::Release(AtlasDepth);
@@ -122,9 +132,7 @@ public:
RenderTargetPool::Release(AtlasGBuffer1);
RenderTargetPool::Release(AtlasGBuffer2);
RenderTargetPool::Release(AtlasDirectLight);
SAFE_DELETE(AtlasTiles);
ObjectsBuffer.Clear();
Objects.Clear();
ClearObjects();
}
~GlobalSurfaceAtlasCustomBuffer()
@@ -252,7 +260,6 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
if (noCache)
{
surfaceAtlasData.Clear();
surfaceAtlasData.AtlasTiles = New<GlobalSurfaceAtlasTile>(0, 0, resolution, resolution);
auto desc = GPUTextureDescription::New2D(resolution, resolution, PixelFormat::Unknown);
uint64 memUsage = 0;
@@ -268,6 +275,18 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
surfaceAtlasData.Resolution = resolution;
LOG(Info, "Global Surface Atlas resolution: {0}, memory usage: {1} MB", resolution, memUsage / 1024 / 1024);
}
else
{
// Perform atlas defragmentation if needed
// TODO: track atlas used vs free ratio to skip defragmentation if it's nearly full (then maybe auto resize up?)
if (currentFrame - surfaceAtlasData.LastFrameAtlasInsertFail < 10 &&
currentFrame - surfaceAtlasData.LastFrameAtlasDefragmentation > 60)
{
surfaceAtlasData.ClearObjects();
}
}
if (!surfaceAtlasData.AtlasTiles)
surfaceAtlasData.AtlasTiles = New<GlobalSurfaceAtlasTile>(0, 0, resolution, resolution);
if (!_vertexBuffer)
_vertexBuffer = New<DynamicVertexBuffer>(0u, (uint32)sizeof(AtlasTileVertex), TEXT("GlobalSurfaceAtlas.VertexBuffer"));
@@ -353,9 +372,11 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
anyTile = true;
dirty = true;
}
else if (object)
else
{
object->Tiles[tileIndex] = nullptr;
if (object)
object->Tiles[tileIndex] = nullptr;
surfaceAtlasData.LastFrameAtlasInsertFail = currentFrame;
}
}
if (anyTile)
@@ -454,7 +475,6 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
surfaceAtlasData.Objects.Remove(it);
}
}
// TODO: perform atlas defragmentation after certain amount of tiles removal
// Send objects data to the GPU
{