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lavfi/vf_xfade_vulkan: add dissolve

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Marvin Scholz 2023-08-21 22:45:25 +02:00 committed by Lynne
parent 8d3fd489e2
commit 98bd8a7f5c
1 changed files with 20 additions and 0 deletions
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20
libavfilter/vf_xfade_vulkan.c
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@ -79,6 +79,7 @@ enum XFadeTransitions {
SLIDERIGHT,
CIRCLEOPEN,
CIRCLECLOSE,
DISSOLVE,
NB_TRANSITIONS,
};
@ -212,6 +213,23 @@ static const char transition_circleclose[] = {
C(0, } )
};
#define SHADER_FRAND_FUNC \
C(0, float frand(vec2 v) ) \
C(0, { ) \
C(1, return fract(sin(dot(v, vec2(12.9898, 78.233))) * 43758.545); ) \
C(0, } )
static const char transition_dissolve[] = {
SHADER_FRAND_FUNC
C(0, void transition(int idx, ivec2 pos, float progress) )
C(0, { )
C(1, float sm = frand(pos) * 2.0 + (1.0 - progress) * 2.0 - 1.5; )
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, sm >= 0.5 ? a : b); )
C(0, } )
};
static const char* transitions_map[NB_TRANSITIONS] = {
[FADE] = transition_fade,
[WIPELEFT] = transition_wipeleft,
@ -224,6 +242,7 @@ static const char* transitions_map[NB_TRANSITIONS] = {
[SLIDERIGHT] = transition_slideright,
[CIRCLEOPEN] = transition_circleopen,
[CIRCLECLOSE] = transition_circleclose,
[DISSOLVE] = transition_dissolve,
};
static av_cold int init_vulkan(AVFilterContext *avctx)
@ -576,6 +595,7 @@ static const AVOption xfade_vulkan_options[] = {
{ "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" },
{ "dissolve", "dissolve transition", 0, AV_OPT_TYPE_CONST, {.i64=DISSOLVE}, 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 }