LaTeX views not rendered in images and PDFs

[tobitech]

Hello, I use LaTex in my views to display math equations but the equations are not being rendered when I want to generate an image or PDF from my SwiftUI view.

I was able to get this working in the past but for some strange reason, it's no longer working.

I'm wondering if there is a particular setup or modifier I'm missing.

Here is a snippet of the the code looks like:

private func generateSolutionImage(
	mathResponse: MathSolution,
	originalImage: UIImage?
) async throws -> URL {
	return try await withCheckedThrowingContinuation { continuation in
		Task { @MainActor in
			do {
				// Create the content view for sharing (no ScrollView)
				let contentView = SolutionContentView(
					mathResponse: mathResponse,
					originalImage: originalImage,
					showShareButton: false,
					forSharing: true
				)
				let renderer = ImageRenderer(content: contentView)
				renderer.scale = 3.0
				// Use unspecified size to let SwiftUI determine the natural size
				renderer.proposedSize = ProposedViewSize.unspecified
				guard let image = renderer.uiImage else {
					throw ShareError.imageGenerationFailed
				}
				let url = try saveImageToTempFile(image: image)
				continuation.resume(returning: url)
			} catch {
				continuation.resume(throwing: error)
			}
		}
	}
}

[ShawnBaek]

@tobitech Could you share error information?

[colinc86]

The latex image rendering has changed significantly and I don't believe will play nicely with an image renderer with the background rendering this view does.

I've added the ability to render the UIImage/NSImage objects themselves to the v2 update. This may solve your problem if you display these instead of the latex view as a subview.