Method RefreshBrush

Source/URLab/Private/UI/MjCameraFeedEntry.cpp:55–107

}

void UMjCameraFeedEntry::RefreshBrush()
{
	if (!BoundCamera || !FeedImage)
		return;

	UTextureRenderTarget2D* RT = BoundCamera->RenderTarget;
	if (!RT)
		return;

	const float W = 320.f;
	const float H = (BoundCamera->resolution[0] > 0)
					  ? W * static_cast<float>(BoundCamera->resolution[1]) / static_cast<float>(BoundCamera->resolution[0])
					  : W * 0.75f;

	// Depth RT is R32f — slate can't display it directly. Build (or reuse)
	// a BGRA UTexture2D preview and bind THAT as the brush. For all other
	// modes the RT is BGRA8 and we can bind it directly.
	UObject* BrushResource = nullptr;
	if (BoundCamera->CaptureMode == EMjCameraMode::Depth)
	{
		if (!DepthPreviewTexture
			|| DepthPreviewTexture->GetSizeX() != BoundCamera->resolution[0]
			|| DepthPreviewTexture->GetSizeY() != BoundCamera->resolution[1])
		{
			DepthPreviewTexture = UTexture2D::CreateTransient(
				BoundCamera->resolution[0], BoundCamera->resolution[1], PF_B8G8R8A8,
				TEXT("URLabDepthPreview"));
			DepthPreviewTexture->CompressionSettings = TC_VectorDisplacementmap;
			DepthPreviewTexture->SRGB = false;
			DepthPreviewTexture->UpdateResource();
		}
		BrushResource = DepthPreviewTexture;
	}
	else
	{
		DepthPreviewTexture = nullptr;
		BrushResource = RT;
	}

	FeedImage->SetBrushResourceObject(BrushResource);

	FSlateBrush Brush = FeedImage->GetBrush();
	Brush.DrawAs = ESlateBrushDrawType::Image;
	Brush.ImageType = ESlateBrushImageType::FullColor;
	Brush.Tiling = ESlateBrushTileType::NoTile;
	Brush.ImageSize = FVector2D(W, H);
	FeedImage->SetBrush(Brush);

	UE_LOG(LogURLab, Log,
		TEXT("[MjCameraFeedEntry] Brush set: '%s' mode=%s RT=%dx%d display=%.0fx%.0f"),
		*BoundCamera->MjName, *UEnum::GetValueAsString(BoundCamera->CaptureMode),
		RT->SizeX, RT->SizeY, W, H);
}

void UMjCameraFeedEntry::UpdateDepthPreview()
{