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Optimize Global Surface Atlas with object draws limit per frame

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This commit is contained in:
Wojciech Figat
2026-04-29 17:05:17 +02:00
parent 3bede1d6bc
commit d4da1d80d0
1 changed files with 3 additions and 3 deletions
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Source/Engine/Renderer/GI/GlobalSurfaceAtlasPass.cpp
+3 -3
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@@ -458,10 +458,11 @@ public:
ObjectsListBuffer.Data.Resize(Objects.Count() * sizeof(uint32)); ObjectsListBuffer.Data.Resize(Objects.Count() * sizeof(uint32));
auto objectsListData = (uint32*)ObjectsListBuffer.Data.Get(); auto objectsListData = (uint32*)ObjectsListBuffer.Data.Get();
int32 dirtyTiles = 0, objectIndex = 0; int32 dirtyTiles = 0, objectIndex = 0;
int32 dirtyObjectsLimitLeft = 50; // TODO: expose as scalability parameter
for (auto& e : Objects) for (auto& e : Objects)
{ {
auto& object = e.Value; auto& object = e.Value;
if (object.Dirty) if (object.Dirty && dirtyObjectsLimitLeft-- > 0)
{ {
// Collect dirty objects // Collect dirty objects
object.LastFrameUpdated = CurrentFrame; object.LastFrameUpdated = CurrentFrame;
@@ -941,7 +942,7 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
context->SetRenderTarget(depthBuffer, ToSpan(targetBuffers, ARRAY_COUNT(targetBuffers))); context->SetRenderTarget(depthBuffer, ToSpan(targetBuffers, ARRAY_COUNT(targetBuffers)));
{ {
PROFILE_GPU_CPU_NAMED("Clear"); PROFILE_GPU_CPU_NAMED("Clear");
if (noCache || GLOBAL_SURFACE_ATLAS_DEBUG_FORCE_REDRAW_TILES) if (noCache || GLOBAL_SURFACE_ATLAS_DEBUG_FORCE_REDRAW_TILES || surfaceAtlasData.LastFrameAtlasDefragmentation == currentFrame)
{ {
// Full-atlas hardware clear // Full-atlas hardware clear
context->ClearDepth(depthBuffer); context->ClearDepth(depthBuffer);
@@ -973,7 +974,6 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
VB_DRAW(); VB_DRAW();
} }
} }
// TODO: limit dirty objects count on a first frame (eg. collect overflown objects to be redirty next frame)
auto& drawCallsListGBuffer = renderContextTiles.List->DrawCallsLists[(int32)DrawCallsListType::GBuffer]; auto& drawCallsListGBuffer = renderContextTiles.List->DrawCallsLists[(int32)DrawCallsListType::GBuffer];
auto& drawCallsListGBufferNoDecals = renderContextTiles.List->DrawCallsLists[(int32)DrawCallsListType::GBufferNoDecals]; auto& drawCallsListGBufferNoDecals = renderContextTiles.List->DrawCallsLists[(int32)DrawCallsListType::GBufferNoDecals];
drawCallsListGBuffer.CanUseInstancing = false; drawCallsListGBuffer.CanUseInstancing = false;