I know shaders in flutter are a relatively new thing, which is why I can’t find that much good documentation online. I’m wondering if there’s a way to get access to the default texture uniform or UVs in a fragment shader attached to a paint for canvas calls like drawImage or drawAtlas. I know I can pass the image as a my own uniform, and any additional data needed to calculate the UVs, but it would be a lot more convenient, especially for drawAtlas, to have that sort of data from some default set of values.