Flax/FlaxEngine
3
0
Fork 0
Code Issues Pull Requests Releases Activity

Optimize DDGI probes debug with a batched instanced draw

Browse Source
This commit is contained in:
Wojciech Figat
2026-06-17 16:40:18 +02:00
parent bd93c29c5b
commit 01ce543f21
2 changed files with 25 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
+24 -3
View File
@@ -790,12 +790,24 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
_debugModel = Content::LoadAsyncInternal<Model>(TEXT("Editor/Primitives/Sphere"));
if (!_debugMaterial)
_debugMaterial = Content::LoadAsyncInternal<MaterialBase>(TEXT("Editor/DebugMaterials/DDGIDebugProbes"));
if (_debugModel && _debugModel->IsLoaded() && _debugModel->CanBeRendered() && _debugMaterial && _debugMaterial->IsLoaded())
if (_debugModel && _debugModel->IsLoaded() && _debugModel->CanBeRendered() && _debugModel->IsInitialized() && _debugMaterial && _debugMaterial->IsLoaded())
{
RenderContext debugRenderContext(renderContext);
Matrix world;
Matrix::Scaling(Float3(0.2f), world);
const Mesh& debugMesh = _debugModel->LODs[0].Meshes[0];
DrawCall drawCall;
{
// Setup draw call
debugMesh.GetDrawCallGeometry(drawCall);
drawCall.InstanceCount = 1;
drawCall.Material = _debugMaterial;
drawCall.World = world;
drawCall.ObjectPosition = drawCall.World.GetTranslation();
drawCall.ObjectRadius = (float)debugMesh.GetSphere().Radius * drawCall.World.GetScaleVector().GetAbsolute().MaxValue();
drawCall.Surface.GeometrySize = debugMesh.GetBox().GetSize();
drawCall.Surface.PrevWorld = world;
}
constexpr int32 maxProbesPerDrawing = 32 * 1024;
int32 probesDrawingStart = 0;
while (probesDrawingStart < ddgiData.ProbesCountTotal)
@@ -803,10 +815,19 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
debugRenderContext.List = RenderList::GetFromPool();
debugRenderContext.View.Pass = DrawPass::GBuffer;
debugRenderContext.View.Prepare(debugRenderContext);
// TODO: refactor this into BatchedDrawCalls for faster draw calls processing
const int32 probesDrawingEnd = Math::Min(probesDrawingStart + maxProbesPerDrawing, ddgiData.ProbesCountTotal);
BatchedDrawCall batchedDrawCall(debugRenderContext.List);
batchedDrawCall.DrawCall = drawCall;
batchedDrawCall.DrawCall.InstanceCount = probesDrawingEnd - probesDrawingStart;
batchedDrawCall.Instances.AddUninitialized(batchedDrawCall.DrawCall.InstanceCount);
ShaderObjectData* instances = batchedDrawCall.Instances.Get();
for (int32 probeIndex = probesDrawingStart; probeIndex < probesDrawingEnd; probeIndex++)
debugMesh.Draw(debugRenderContext, _debugMaterial, world, StaticFlags::None, true, DrawPass::GBuffer, (float)probeIndex);
{
drawCall.PerInstanceRandom = (float)probeIndex; // Used by DDGIDebugProbes material to fetch probe data
instances[probeIndex].Store(drawCall);
}
const int32 batchIndex = debugRenderContext.List->BatchedDrawCalls.Add(MoveTemp(batchedDrawCall));
debugRenderContext.List->DrawCallsLists[(int32)DrawCallsListType::GBuffer].PreBatchedDrawCalls.Add(batchIndex);
debugRenderContext.List->SortDrawCalls(debugRenderContext, false, DrawCallsListType::GBuffer);
context->SetViewportAndScissors(debugRenderContext.View.ScreenSize.X, debugRenderContext.View.ScreenSize.Y);
GPUTextureView* targetBuffers[5] =
Source/Engine/Renderer/RenderList.h
+1 -1
View File
@@ -639,7 +639,7 @@ public:
/// <param name="pass">The draw pass (optional).</param>
API_FUNCTION() FORCE_INLINE void SortDrawCalls(API_PARAM(Ref) const RenderContext& renderContext, bool reverseDistance, DrawCallsListType listType, DrawPass pass = DrawPass::All)
{
SortDrawCalls(renderContext, reverseDistance, DrawCallsLists[(int32)listType], DrawCalls, listType);
SortDrawCalls(renderContext, reverseDistance, DrawCallsLists[(int32)listType], DrawCalls, listType, pass);
}
/// <summary>