@OverloadedOrama Hello, Thanks for your contribution. I am curious about the practical use of this feature in user applications. Could you provide some tips on use cases?

@OverloadedOrama One more question, do you really need to apply this per shape or scene? or is it applied to the full screen in the ThorVG canvas?

@hermet Hello! I am working on a pixel art editor made with Godot, and I want to implement support for vector layers in order to have non-destructive shapes, and my idea is to construct a SVG behind the scenes that gets rasterized by Godot/ThorVG in order to be drawn in the canvas. This already can work fine, but all shapes are currently anti-aliased, with no option to turn it off, which doesn't work well with pixel art. So I thought to use the shape-rendering SVG attribute to control whether a shape is anti-aliased or not.

I think this needs to be applied per-shape, just like the attribute is per-shape in SVG, in order to allow users to choose which shapes are anti-aliased and which ones are not.

@RuiwenTang @SergeyLebedkin Hello, could you please confirm with the GL/WG engine side if they can allow the AA option per shape?

I'm not sure why unit tests are failing. For some reason, if I uncomment either line 90 or line 91 on tvgSwShape.cpp, the unit tests pass fine, but I don't understand why adding line 90 makes them fail.

Thanks for your contribution. Still some considerations:

• ThorVG can probably support anti-aliasing toggle internally through the SVG loader and renderer, without exposing specific APIs because I don't think AA toggle per shape is a general requirement.
• Because of that reason, I'm not sure whether adding a flag for each shape is a good idea in sake of optimal memory usage, because it would harm the general use-cases, a global option is good though.
• @OverloadedOrama It would be nice if you have a practical demo in production.

Hello @hermet, apologies for the late reply. I don't have a practical demo ready at the moment, but as I mentioned the reason I need this is because I want to add vector layers in my pixel art software, which is made with Godot, and I'd like to give users the option to disable AA so the shapes can look better for pixel art. If you think that adding a per-shape flag for AA is not needed and it can increase memory usage, then I completely understand and I'd be okay with a more global solution.

What I'd ideally want though is for a way to toggle AA with SVG code. The idea for vector layers is to pass an SVG string and use Godot's Image.load_svg_from_string to turn SVG into a rasterized image. From what I understand, this uses ThorVG's software renderer behind the scenes. Using the shape-rendering tag for each shape is the closest thing I could find to this, and when I compiled Godot with this PR's version of ThorVG, it was working as expected. If there's a better solution for this, I'm of course open to it! If a global option is implemented, perhaps it could be passed as an extra parameter for Image.load_svg_from_string and Image.load_svg_from_buffer, like it happens with the scale parameter, but I suppose that needs to be done in Godot's side.