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Optimize Debug Draw performance of splines to use frustum culling

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This commit is contained in:
Wojtek Figat
2025-07-14 20:26:24 +02:00
parent 349547f66c
commit 8ed2d6da56
6 changed files with 40 additions and 8 deletions
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22
Source/Engine/Debug/DebugDraw.cpp
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@@ -357,7 +357,8 @@ struct DebugDrawContext
DebugDrawData DebugDrawDefault;
DebugDrawData DebugDrawDepthTest;
Float3 LastViewPos = Float3::Zero;
Matrix LastViewProj = Matrix::Identity;
Matrix LastViewProjection = Matrix::Identity;
BoundingFrustum LastViewFrustum;
inline int32 Count() const
{
@@ -779,9 +780,23 @@ Vector3 DebugDraw::GetViewPos()
return Context->LastViewPos;
}
BoundingFrustum DebugDraw::GetViewFrustum()
{
return Context->LastViewFrustum;
}
void DebugDraw::SetView(const RenderView& view)
{
Context->LastViewPos = view.Position;
Context->LastViewProjection = view.Projection;
Context->LastViewFrustum = view.Frustum;
}
void DebugDraw::Draw(RenderContext& renderContext, GPUTextureView* target, GPUTextureView* depthBuffer, bool enableDepthTest)
{
PROFILE_GPU_CPU("Debug Draw");
const RenderView& view = renderContext.View;
SetView(view);
// Ensure to have shader loaded and any lines to render
const int32 debugDrawDepthTestCount = Context->DebugDrawDepthTest.Count();
@@ -791,7 +806,6 @@ void DebugDraw::Draw(RenderContext& renderContext, GPUTextureView* target, GPUTe
if (renderContext.Buffers == nullptr || !DebugDrawVB)
return;
auto context = GPUDevice::Instance->GetMainContext();
const RenderView& view = renderContext.View;
if (Context->Origin != view.Origin)
{
// Teleport existing debug shapes to maintain their location
@@ -800,8 +814,6 @@ void DebugDraw::Draw(RenderContext& renderContext, GPUTextureView* target, GPUTe
Context->DebugDrawDepthTest.Teleport(delta);
Context->Origin = view.Origin;
}
Context->LastViewPos = view.Position;
Context->LastViewProj = view.Projection;
TaaJitterRemoveContext taaJitterRemove(view);
// Fallback to task buffers
@@ -1383,7 +1395,7 @@ void DebugDraw::DrawWireSphere(const BoundingSphere& sphere, const Color& color,
int32 index;
const Float3 centerF = sphere.Center - Context->Origin;
const float radiusF = (float)sphere.Radius;
const float screenRadiusSquared = RenderTools::ComputeBoundsScreenRadiusSquared(centerF, radiusF, Context->LastViewPos, Context->LastViewProj);
const float screenRadiusSquared = RenderTools::ComputeBoundsScreenRadiusSquared(centerF, radiusF, Context->LastViewPos, Context->LastViewProjection);
if (screenRadiusSquared > DEBUG_DRAW_SPHERE_LOD0_SCREEN_SIZE * DEBUG_DRAW_SPHERE_LOD0_SCREEN_SIZE * 0.25f)
index = 0;
else if (screenRadiusSquared > DEBUG_DRAW_SPHERE_LOD1_SCREEN_SIZE * DEBUG_DRAW_SPHERE_LOD1_SCREEN_SIZE * 0.25f)

5
Source/Engine/Debug/DebugDraw.h
View File

@@ -76,6 +76,11 @@ API_CLASS(Static) class FLAXENGINE_API DebugDraw
// Gets the last view position when rendering the current context. Can be used for custom culling or LODing when drawing more complex shapes.
static Vector3 GetViewPos();
// Gets the last view frustum when rendering the current context. Can be used for custom culling or LODing when drawing more complex shapes.
static BoundingFrustum GetViewFrustum();
// Sets the rendering view information beforehand.
API_FUNCTION() static void SetView(API_PARAM(ref) const RenderView& view);
/// <summary>
/// Draws the collected debug shapes to the output.