name: Commit V36 Retail Soft decode

on:
  push:
    branches:
      - test/v36-retail-jfa-soft

permissions:
  contents: write

jobs:
  commit-v36-soft:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          ref: test/v36-retail-jfa-soft

      - name: Apply V36 decode
        shell: bash
        run: |
          set -euo pipefail
          python3 <<'PY'
          from pathlib import Path
          p = Path('src/outline/d3d9_hook.zig')
          s = p.read_text()
          if 'V36 RETAIL-SOFT' in s:
              raise SystemExit(0)
          start = s.index('/// V32 POLISH: hard 3px outline, no feather.')
          end = s.index('/// Debug: composite silhouette RT directly.')
          lines = [
              '/// V36 RETAIL-SOFT: keep the proven V34 JFA, soften only final decode.',
              '/// c0 = (screen_width, screen_height, core_radius_px, halo_radius_px).',
              '/// Uses the same two texture reads as V34: no 17-tap full-screen morphology.',
              'const jfa_decode_src =',
              '    "ps_3_0\\n" ++',
              '    "def c1, 0.0, 0.22, 0.82, -0.002\\n" ++',
              '    "def c2, 1.0, 0.95, 0.58, 0.0\\n" ++',
              '    "dcl_2d s0\\n" ++',
              '    "dcl_2d s1\\n" ++',
              '    "dcl_texcoord0 v0\\n" ++',
              '    "texld r0, v0, s0\\n" ++',
              '    "sub r1.xy, v0.xy, r0.xy\\n" ++',
              '    "mul r1.xy, r1.xy, c0.xy\\n" ++',
              '    "dp2add r1.z, r1, r1, c1.x\\n" ++',
              '    "mul r3.x, c0.z, c0.z\\n" ++',
              '    "mul r3.y, c0.w, c0.w\\n" ++',
              '    "sub r4.x, r1.z, r3.y\\n" ++',
              '    "cmp r6.w, r4.x, c1.x, c1.y\\n" ++',
              '    "sub r4.x, r1.z, r3.x\\n" ++',
              '    "cmp r6.w, r4.x, r6.w, c1.z\\n" ++',
              '    "texld r5, v0, s1\\n" ++',
              '    "add r5.x, r5.a, c1.w\\n" ++',
              '    "cmp r6.w, r5.x, c1.x, r6.w\\n" ++',
              '    "mov r6.xyz, c2.xyz\\n" ++',
              '    "mov oC0, r6\\n";',
              '',
              '',
          ]
          s = s[:start] + '\n'.join(lines) + s[end:]
          old = '        // V34: hard 3px edge unchanged; JFA seed precision is now full-float.\n        c0 = [4]f32{ fw, fh, 3.0, 0.0 };'
          new_cpu = '        // V36: thin 1.5px core plus a subtle 3px halo.\n        c0 = [4]f32{ fw, fh, 1.5, 3.0 };'
          if old not in s:
              raise SystemExit('V34 CPU decode constants not found')
          p.write_text(s.replace(old, new_cpu))
          PY

      - name: Commit source
        shell: bash
        run: |
          set -euo pipefail
          if git diff --quiet; then exit 0; fi
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add src/outline/d3d9_hook.zig
          git commit -m "V36: soft Retail-style JFA decode"
          git push origin HEAD:test/v36-retail-jfa-soft