Commit graph pcbjam/tests/gal-regression/baseline/gal-alpha-blending.png
Author SHA1 Message Date
Viktor Vaczi
6fa6c9207f feat(webgl): Migrate to pure WebGL 2.0 and fix GL canvas layering
Update submodules and build config for pure WebGL 2.0 (drop -sFULL_ES3):
- kicad: VBO-based drawing, compositor FBO rewrite, shader conversion
- wxwidgets: Fix z-index layering so GL canvas renders above 2D UI canvas
- Build: Remove FULL_ES3 from linker flags
- GAL tests: White background, opaque alpha, shared shader converter,
  updated baseline screenshots

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-20 12:38:24 +01:00
Viktor Vaczi
490f531521 feat(webgl): Add GAL native test harness for visual regression testing
Add a standalone test application that compiles KiCad's actual OPENGL_GAL
against system wxWidgets to generate baseline screenshots for comparing
native OpenGL rendering against WebGL rendering in the browser.

Architecture:
- Compiles 18 KiCad GAL source files from the kicad submodule
- Uses template-based private member accessor (safer than #define private public)
- Generates shader C++ files from GLSL (10 shader pairs for SMAA AA)
- Minimal stubs for KiCad dependencies (PGM_BASE, ADVANCED_CFG, etc.)

Test coverage:
- 11 scenarios testing ~19% of GAL API
- basic-lines, line-widths, circles, arcs, rectangles, polygons
- alpha-blending, transforms, grid-cursor, segments, complex-scene

Key insights documented:
- GAL uses world-to-screen transformation requiring 1:1 pixel mapping
- FBO reading required for clean screenshots on macOS
- Layer depth needed for proper z-ordering in complex scenes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-07 09:42:31 +01:00