void ULevelThumbnailRenderer::GetView(ULevel* Level, FSceneViewFamily* ViewFamily, int32 X, int32 Y, uint32 SizeX, uint32 SizeY) const
{
check(ViewFamily);
FIntRect ViewRect(
FMath::Max<int32>(X,0),
FMath::Max<int32>(Y,0),
FMath::Max<int32>(X+SizeX,0),
FMath::Max<int32>(Y+SizeY,0));
FBox LevelBox(0);
if (Level->LevelBoundsActor.IsValid())
{
LevelBox = Level->LevelBoundsActor.Get()->GetComponentsBoundingBox();
}
else
{
LevelBox = ALevelBounds::CalculateLevelBounds(Level);
}
if (ViewRect.Width() > 0 && ViewRect.Height() > 0)
{
FSceneViewInitOptions ViewInitOptions;
ViewInitOptions.SetViewRectangle(ViewRect);
ViewInitOptions.ViewFamily = ViewFamily;
const FVector ViewPoint = LevelBox.GetCenter();
ViewInitOptions.ViewMatrix = FMatrix(
FPlane(1, 0, 0, 0),
FPlane(0, -1, 0, 0),
FPlane(0, 0, -1, 0),
FPlane(-ViewPoint.X, ViewPoint.Y, 0, 1));
const float ZOffset = WORLD_MAX;
ViewInitOptions.ProjectionMatrix = FReversedZOrthoMatrix(
LevelBox.GetSize().X/2.f,
LevelBox.GetSize().Y/2.f,
0.5f / ZOffset,
ZOffset
);
FSceneView* NewView = new FSceneView(ViewInitOptions);
ViewFamily->Views.Add(NewView);
}
}
void FRendererModule::GPUBenchmark(FSynthBenchmarkResults& InOut, float WorkScale)
{
check(IsInGameThread());
FSceneViewInitOptions ViewInitOptions;
FIntRect ViewRect(0, 0, 1, 1);
FBox LevelBox(FVector(-WORLD_MAX), FVector(+WORLD_MAX));
ViewInitOptions.SetViewRectangle(ViewRect);
// Initialize Projection Matrix and ViewMatrix since FSceneView initialization is doing some math on them.
// Otherwise it trips NaN checks.
const FVector ViewPoint = LevelBox.GetCenter();
ViewInitOptions.ViewOrigin = FVector(ViewPoint.X, ViewPoint.Y, 0.0f);
ViewInitOptions.ViewRotationMatrix = FMatrix(
FPlane(1, 0, 0, 0),
FPlane(0, -1, 0, 0),
FPlane(0, 0, -1, 0),
FPlane(0, 0, 0, 1));
const float ZOffset = WORLD_MAX;
ViewInitOptions.ProjectionMatrix = FReversedZOrthoMatrix(
LevelBox.GetSize().X / 2.f,
LevelBox.GetSize().Y / 2.f,
0.5f / ZOffset,
ZOffset
);
FSceneView DummyView(ViewInitOptions);
ENQUEUE_UNIQUE_RENDER_COMMAND_THREEPARAMETER(
RendererGPUBenchmarkCommand,
FSceneView, DummyView, DummyView,
float, WorkScale, WorkScale,
FSynthBenchmarkResults&, InOut, InOut,
{
RendererGPUBenchmark(RHICmdList, InOut, DummyView, WorkScale);
});