SDL_RenderFillRect() doesn't rend anything with software renderer. See upstream URL for details. Reproducible: Always Steps to Reproduce: 1. use SDL_RenderFillRect() on software renderer Actual Results: Nothing. Expected Results: Filled rect. The fix is being currently work on by upstream. I am opening the ticket to get the fresh package once fixed.
FEDORA-2025-e9f23d2848 (mingw-sdl2-compat-2.32.56-1.fc42, mingw-SDL3-3.2.12-1.fc42, and 2 more) has been submitted as an update to Fedora 42. https://bodhi.fedoraproject.org/updates/FEDORA-2025-e9f23d2848
FEDORA-2025-e9f23d2848 (mingw-sdl2-compat-2.32.56-1.fc42, mingw-SDL3-3.2.12-1.fc42, and 2 more) has been pushed to the Fedora 42 stable repository. If problem still persists, please make note of it in this bug report.