# disable openswf as it requires AVX, makes no sense with old CPUs
# disable every new software rasterizer and take the old ones
# see also FS32#39
eval "$(
  declare -f build | \
    sed '
      /arch-meson/s/\(gallium-drivers=.*\),swrast,swr/\1,swrast/
      /arch-meson/s/\(-D swr-arches=\)avx,avx2/\1/
    '
  declare -f package_mesa | \
    sed '
      s@_install fakeinstall/usr/lib/libswrAVX.*@#\0@g
    '
)"

# do not build/package vulkan on i486
# do not build i915,i965 on i486
if [ "$CARCH" = 'i486' ]; then
  eval "$(
    declare -f build | \
      sed '
        s/\(-D gallium-drivers=\)\S\+ /\1 /
        s/-D gallium-omx=bellagio //
        s/-D gallium-opencl=\S\+ //
        s/-D osmesa=true /-D osmesa=false /
        s/\(-D gallium-\S\+=\)enabled /\1disabled /g
        s/\(-D gallium-nine=\)true /\1false /g
        s/\(-D vulkan-drivers=\)\S\+ /\1 /
        s/\(-D dri-drivers=\(\S\+,\)\?\)i915,/\1/
        s/\(-D dri-drivers=\(\S\+,\)\?\)i965,/\1/
      '
    declare -f package_mesa | \
      sed '
        \,rm .*/vulkan;,d
        \,bellagio,d
        \,fakeinstall/usr/lib/d3d,d
        \,fakeinstall/usr/lib/libOSMesa\.so\*,d
        \,fakeinstall/usr/lib/libxatracker\.so\*,d
      '
  )"
else
  eval "$(
    declare -f package_vulkan-intel package_vulkan-radeon package_opencl-mesa package_libva-mesa-driver package_mesa-vdpau | \
      sed '
        /^\s*{\s*$/ a arch=('"$(
          printf '%s\n' "${arch[@]}" | \
            grep -vxF 'i486' | \
            tr '\n' ' '
        )"')
      '
  )"
fi

# break cycle with conflicting installation files between mesa and libglvnd
# (indirect dependency via libva)
# i486-specific
if [ "$CARCH" = 'i486' ]; then
  eval "$(
    declare -f package_mesa | \
      sed '
        $ i rm -rf $pkgdir/usr/include/EGL/egl.h \
            rm -rf $pkgdir/usr/include/EGL/eglext.h \
            rm -rf $pkgdir/usr/include/EGL/eglplatform.h \
            rm -rf $pkgdir/usr/include/GL/gl.h \
            rm -rf $pkgdir/usr/include/GL/glcorearb.h \
            rm -rf $pkgdir/usr/include/GL/glext.h  \
            rm -rf $pkgdir/usr/include/GL/glx.h  \
            rm -rf $pkgdir/usr/include/GL/glxext.h  \
            rm -rf $pkgdir/usr/include/GLES2/gl2.h  \
            rm -rf $pkgdir/usr/include/GLES2/gl2ext.h  \
            rm -rf $pkgdir/usr/include/GLES2/gl2platform.h  \
            rm -rf $pkgdir/usr/include/GLES3/gl3.h  \
            rm -rf $pkgdir/usr/include/GLES3/gl31.h  \
            rm -rf $pkgdir/usr/include/GLES3/gl32.h  \
            rm -rf $pkgdir/usr/include/GLES3/gl3ext.h  \
            rm -rf $pkgdir/usr/include/GLES3/gl3platform.h  \
            rm -rf $pkgdir/usr/include/KHR/khrplatform.h  \
            rm -rf $pkgdir/usr/lib/pkgconfig/egl.pc  \
            rm -rf $pkgdir/usr/lib/pkgconfig/gl.pc  \
            rm -rf $pkgdir/usr/lib/pkgconfig/glesv2.pc
      '
    declare -f package_vulkan-mesa-layers | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_vulkan-swrast | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_vulkan-intel | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_vulkan-radeon | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_opencl-mesa | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_libva-mesa-driver | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_libva-mesa-vdpau | \
      sed '
        3 i if false; then
        $ i fi      
      '
    declare -f package_mesa-vdpau | \
      sed '
        3 i if false; then
        $ i fi      
      '
  )
  "
fi