forked from joejulian/gio
Viktor
24951a7ee7
Add support for affine transformations. The key changes are outlined below. - Painting/clipping with rectangles is handled by, for complex transforms, creating clipping paths representing the transformed rectangle and using a larger bounding box. Cover/Blit shaders updated correspondingly to correctly map texture cordinates from the new bounding boxes. - Since path splitting must happen on CPU the transforms must happen CPU side as well - offsets removed from shaders. - Complex transforms will lead to different path splitting which means that GPU arrays can no longer be cached if the transform has changed. Thus the current transform is added as a key to the cache. - Add a public API to op for setting Affine transformations. There are a number of optimizations that could be explored further but which are left out now: - Caching also of CPU operations (e.g path splitting & transforms) and not only caching the GPU arrays. - Allow for re-use of cached GPU vertices if the transformation change is a pure offset / scaling since the splitting is then the same. Signed-off-by: Viktor <viktor.ogeman@gmail.com>
Gio
Immediate mode GUI programs in Go for Android, iOS, macOS, Linux, FreeBSD, OpenBSD, Windows, and WebAssembly (experimental). See the project page gioui.org for documentation and more information.
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