Change #254111

Comments

avfilter/vf_drawvg: values from the p() function can be used as colors.
To be able to reuse colors from the original frame, the last value returned by
`p()` is tracked in the eval state, and if it is assigned to a variable, the
original color components are copied to `color_vars`. Thus, commands like
`setcolor` and `colorstop` can use those variables:

    setvar pixel (p(0, 0))
    ...
    setcolor pixel

`fate-filter-drawvg-video` now also verifies the `p()` function.

Signed-off-by: Ayose <ayosec@gmail.com>

Changed files

• libavfilter/vf_drawvg.c
• tests/fate/filter-video.mak
• tests/ref/fate/filter-drawvg-video
• tests/ref/lavf/drawvg.lines
• tests/ref/lavf/drawvg.video