name: Graphics CI

on:
  push:
    paths-ignore:
      - "**.md"
  pull_request:
    paths-ignore:
      - "**.md"

jobs:
  gg-regressions:
    runs-on: ubuntu-20.04
    if: github.event_name != 'push' || github.event.ref == 'refs/heads/master' || github.event.repository.full_name != 'vlang/v'
    timeout-minutes: 20
    env:
      VFLAGS: -cc tcc
      DISPLAY: :99
      LIBGL_ALWAYS_SOFTWARE: true
      VTMP: /tmp
    steps:
      - name: Checkout V
        uses: actions/checkout@v3

      - name: Build local v
        run: make

      - name: Setup dependencies
        run: |
          # imagemagick              : convert, mogrify
          # xvfb                     : xvfb
          # openimageio-tools        : idiff
          # libxcursor-dev libxi-dev : V gfx deps
          # libgl1-mesa-dri          : For headless rendering / software DRI driver (LIBGL_ALWAYS_SOFTWARE=true)
          # freeglut3-dev            : Fixes graphic apps compilation with tcc
          sudo apt-get update
          sudo apt-get install imagemagick openimageio-tools libgl1-mesa-dri xvfb libxcursor-dev libxi-dev freeglut3-dev xsel xclip
          wget https://raw.githubusercontent.com/tremby/imgur.sh/c98345d/imgur.sh
          git clone https://github.com/Larpon/gg-regression-images gg-regression-images
          chmod +x ./imgur.sh

      - name: Sample and compare
        id: compare
        continue-on-error: true
        run: |
          Xvfb $DISPLAY -screen 0 1280x1024x24 -fbdir /var/tmp/ &
          sleep 1; while [ ! -f /var/tmp/Xvfb_screen0 ]; do sleep 0.5; done # give xvfb time to start, even on slow CI runs
          sleep 1; ./v gret -t ./gg-regression-images/vgret.v_examples.toml -v ./gg-sample_images ./gg-regression-images

      - name: Upload regression to imgur
        if: steps.compare.outcome != 'success'
        run: |
          ./imgur.sh /tmp/fail.png
          ./imgur.sh /tmp/diff.png
          exit 1