Sistema de rendering dual para zcatgui:
Core:
- RenderMode enum (simple/fancy) en style.zig
- global_render_mode con helpers: isFancy(), setRenderMode()
- fillRoundedRect con edge-fade AA en framebuffer.zig (~350 LOC)
- Nuevos comandos: rounded_rect, rounded_rect_outline
Widgets actualizados:
- Button: corner_radius=4, usa roundedRect en fancy mode
- Panel: corner_radius=6, show_shadow=true, sombra offset 4px
- TextInput: corner_radius=3
- Select: corner_radius=3
- Modal: corner_radius=8, show_shadow=true, sombra offset 6px
- Botones y input field del modal también redondeados
Técnica edge-fade (de DVUI):
- Anti-aliasing por gradiente alfa en bordes
- Sin supersampling, mínimo impacto en rendimiento
- Bordes suaves sin multisampling
+589 líneas, 9 archivos modificados
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
For solid colors (alpha=255), use @memset per row instead of
pixel-by-pixel loop. @memset is SIMD-optimized by the compiler
(uses SSE/AVX on x86-64).
Result: Render time 1.4ms → 1.0ms (28% faster in Release build)
Also cleaner code separation between solid color fast path
and alpha blending slow path.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Framebuffer:
- Add clearRect() for clearing specific rectangular regions
SoftwareRenderer:
- Add executeWithDirtyRegions() for optimized partial rendering
- Add clearRect() convenience method
- Add commandBounds() to extract bounding box from draw commands
- Add rectsIntersect() helper for intersection testing
This enables applications to:
1. Clear only dirty regions instead of full screen
2. Skip rendering commands outside dirty areas
3. Significantly reduce CPU when only small areas change
Usage: Pass dirty_regions from Context.getDirtyRects() to
executeWithDirtyRegions() instead of using clear()+executeAll().
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
