Changelog

1.0.0 stable 2026-09-28

First release: the software rasterizer from dream-ini’s PortMaster build, with a drawing API of its own and egui as an option.

Added

• SoftwareRenderer and Frame: clear, fill_rect, textured_rect and mesh, rasterized immediately into a premultiplied RGBA8 surface.
• create_texture, update_texture and free_texture, with handles issued process-wide and never reused.
• Color, Vertex, Rect, ClipRect and TextureId, and one Error type for every rejected call.
• The egui feature: render_egui, RenderFrame, RenderOutcome, and skipping frames whose output did not change.
• NEON kernels on AArch64 for translucent spans, textured and glyph rows, gradient rows and coverage scans, held byte for byte to the portable code.
• The draw and frame benchmarks, and golden hashes of four whole frames.

Known issues

• A surface wider or taller than 65535 pixels is accepted and draws wrong past pixel 65535. Refused on the default branch.
• A texture wider or taller than 65536 texels is accepted and samples the wrong texels. Refused on the default branch.
• In render_egui, a frame after one whose texture uploads failed part way can be skipped as unchanged and keep the old texels. Fixed on the default branch.
• In render_egui, textures egui releases in a frame that fails stay in the store and count against the budget. Fixed on the default branch.
• In render_egui, a mesh with an index past its vertices, or a trailing partial triangle, is skipped instead of failing the frame. Fixed on the default branch.