Re: [FFmpeg-devel] [PATCH 1/2] lavfi/vf_xfade_vulkan: add circleopen/circleclose

[Marvin Scholz <epirat07@gmail.com>]

On 24 Jul 2023, at 23:11, Marvin Scholz wrote:

> ---
>  libavfilter/vf_xfade_vulkan.c | 43 +++++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
>
> diff --git a/libavfilter/vf_xfade_vulkan.c b/libavfilter/vf_xfade_vulkan.c
> index 8825717890..d044714199 100644
> --- a/libavfilter/vf_xfade_vulkan.c
> +++ b/libavfilter/vf_xfade_vulkan.c
> @@ -76,6 +76,8 @@ enum XFadeTransitions {
>      SLIDEUP,
>      SLIDELEFT,
>      SLIDERIGHT,
> +    CIRCLEOPEN,
> +    CIRCLECLOSE,
>      NB_TRANSITIONS,
>  };
>
> @@ -178,6 +180,43 @@ static const char transition_slideright[] = {
>      C(0, }                                                                     )
>  };
>
> +#define SHADER_HYPOT_FUNC                                                      \
> +    C(0, float hypot(ivec2 v) {                                              ) \
> +    C(1,     ivec2 sqr = v * v;                                              ) \
> +    C(1,     return sqrt(sqr.x + sqr.y);                                     ) \
> +    C(0, }                                                                   )
> +
> +#define SHADER_CIRCLE_COMMON                                                     \
> +    SHADER_HYPOT_FUNC                                                            \
> +    C(0, void circle(int idx, ivec2 pos, float progress, bool open)            ) \
> +    C(0, {                                                                     ) \
> +    C(1,     const ivec2 half_size = imageSize(output_images[idx]) / 2;        ) \
> +    C(1,     const float z = hypot(half_size);                                 ) \
> +    C(1,     float p = ((open ? (1.0 - progress) : progress) - 0.5) * 3.0;     ) \
> +    C(1,     float sm = hypot(pos - half_size) / z + p;                        ) \
> +    C(1,     vec4 a = texture(a_images[idx], pos);                             ) \
> +    C(1,     vec4 b = texture(b_images[idx], pos);                             ) \
> +    C(1,     imageStore(output_images[idx], pos, \
> +                        mix(open ? b : a, open ? a : b, \
> +                            smoothstep(0.f, 1.f, sm)));                        ) \
> +    C(0, }                                                                     )
> +
> +static const char transition_circleopen[] = {
> +    SHADER_CIRCLE_COMMON
> +    C(0, void transition(int idx, ivec2 pos, float progress)                   )
> +    C(0, {                                                                     )
> +    C(1,     circle(idx, pos, progress, true);                                 )
> +    C(0, }                                                                     )
> +};
> +
> +static const char transition_circleclose[] = {
> +    SHADER_CIRCLE_COMMON
> +    C(0, void transition(int idx, ivec2 pos, float progress)                   )
> +    C(0, {                                                                     )
> +    C(1,     circle(idx, pos, progress, false);                                )
> +    C(0, }                                                                     )
> +};
> +
>  static const char* transitions_map[NB_TRANSITIONS] = {
>      [FADE]      = transition_fade,
>      [WIPELEFT]  = transition_wipeleft,
> @@ -188,6 +227,8 @@ static const char* transitions_map[NB_TRANSITIONS] = {
>      [SLIDEUP]   = transition_slideup,
>      [SLIDELEFT] = transition_slideleft,
>      [SLIDERIGHT]= transition_slideright,
> +    [CIRCLEOPEN]= transition_circleopen,
> +    [CIRCLECLOSE]=transition_circleclose,
>  };
>
>  static av_cold int init_vulkan(AVFilterContext *avctx)
> @@ -538,6 +579,8 @@ static const AVOption xfade_vulkan_options[] = {
>          { "slideup",   "slide up transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDEUP}, 0, 0, FLAGS, "transition" },
>          { "slideleft", "slide left transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDELEFT}, 0, 0, FLAGS, "transition" },
>          { "slideright","slide right transition", 0, AV_OPT_TYPE_CONST, {.i64=SLIDERIGHT}, 0, 0, FLAGS, "transition" },
> +        { "circleopen","circleopen transition", 0, AV_OPT_TYPE_CONST, {.i64=CIRCLEOPEN}, 0, 0, FLAGS, "transition" },
> +        { "circleclose","circleclose transition", 0, AV_OPT_TYPE_CONST, {.i64=CIRCLECLOSE}, 0, 0, FLAGS, "transition" },
>      { "duration", "set cross fade duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64=1000000}, 0, 60000000, FLAGS },
>      { "offset",   "set cross fade start relative to first input stream", OFFSET(offset), AV_OPT_TYPE_DURATION, {.i64=0}, INT64_MIN, INT64_MAX, FLAGS },
>      { NULL }
> -- 
> 2.39.2

Please ignore this set, I've posted an update but messed up using git send-email
properly so it is not marked v2 and the in-reply-to header is messed up, hence
not being threaded properly here…

Sorry for the noise.
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