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obs-transitions: Use texrender with stacked track mattes

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When using a stacked track matte stinger transition with a visibility
transition, the matte portion of video would also be visible on the
right side or below the source. This fixes it by first rendering the
video to a texrender object in order to filter out the unwanted portion.

(Jim note: So basically, track matte stingers now use two texrenders.  I
really don't like this. Texrender objects can already cause stalling as
it is.)
This commit is contained in:
jp9000
2021-05-11 00:42:38 -07:00
parent c4e0a68641
commit fa3d87b770
1 changed files with 51 additions and 15 deletions
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66
plugins/obs-transitions/transition-stinger.c
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@@ -33,6 +33,7 @@ struct stinger_info {
float matte_width_factor;
float matte_height_factor;
bool invert_matte;
bool do_texrender;
gs_effect_t *matte_effect;
gs_eparam_t *ep_a_tex;
@@ -41,6 +42,7 @@ struct stinger_info {
gs_eparam_t *ep_invert_matte;
gs_texrender_t *matte_tex;
gs_texrender_t *stinger_tex;
float (*mix_a)(void *data, float t);
float (*mix_b)(void *data, float t);
@@ -97,6 +99,9 @@ static void stinger_update(void *data, obs_data_t *settings)
(s->matte_layout == MATTE_LAYOUT_VERTICAL ? 2.0f : 1.0f);
s->invert_matte = obs_data_get_bool(settings, "invert_matte");
s->do_texrender = s->track_matte_enabled &&
s->matte_layout != MATTE_LAYOUT_SEPARATE_FILE;
if (s->matte_source) {
obs_source_release(s->matte_source);
s->matte_source = NULL;
@@ -139,10 +144,14 @@ static void stinger_update(void *data, obs_data_t *settings)
if (s->track_matte_enabled != track_matte_was_enabled) {
gs_texrender_destroy(s->matte_tex);
gs_texrender_destroy(s->stinger_tex);
s->matte_tex = NULL;
s->stinger_tex = NULL;
if (s->track_matte_enabled) {
s->matte_tex = gs_texrender_create(GS_RGBA, GS_ZS_NONE);
s->stinger_tex =
gs_texrender_create(GS_RGBA, GS_ZS_NONE);
}
}
}
@@ -192,6 +201,7 @@ static void stinger_destroy(void *data)
obs_source_release(s->matte_source);
gs_texrender_destroy(s->matte_tex);
gs_texrender_destroy(s->stinger_tex);
gs_effect_destroy(s->matte_effect);
@@ -263,6 +273,25 @@ static void stinger_matte_render(void *data, gs_texture_t *a, gs_texture_t *b,
UNUSED_PARAMETER(t);
}
static void stinger_texrender(struct stinger_info *s, uint32_t source_cx,
uint32_t source_cy, uint32_t media_cx,
uint32_t media_cy)
{
if (gs_texrender_begin(s->stinger_tex, source_cx, source_cy)) {
float cx = (float)media_cx / s->matte_width_factor;
float cy = (float)media_cy / s->matte_height_factor;
gs_ortho(0.0f, cx, 0.0f, cy, -100.0f, 100.0f);
gs_blend_state_push();
gs_enable_blending(false);
obs_source_video_render(s->media_source);
gs_blend_state_pop();
gs_texrender_end(s->stinger_tex);
}
}
static void stinger_video_render(void *data, gs_effect_t *effect)
{
struct stinger_info *s = data;
@@ -283,8 +312,11 @@ static void stinger_video_render(void *data, gs_effect_t *effect)
/* --------------------- */
float source_cx = (float)obs_source_get_width(s->source);
float source_cy = (float)obs_source_get_height(s->source);
uint32_t source_cx = obs_source_get_width(s->source);
uint32_t source_cy = obs_source_get_height(s->source);
float source_cxf = (float)source_cx;
float source_cyf = (float)source_cy;
uint32_t media_cx = obs_source_get_width(s->media_source);
uint32_t media_cy = obs_source_get_height(s->media_source);
@@ -292,20 +324,23 @@ static void stinger_video_render(void *data, gs_effect_t *effect)
if (!media_cx || !media_cy)
return;
float scale_x, scale_y;
if (s->track_matte_enabled) {
scale_x = source_cx / ((float)media_cx / s->matte_width_factor);
scale_y =
source_cy / ((float)media_cy / s->matte_height_factor);
} else {
scale_x = source_cx / (float)media_cx;
scale_y = source_cy / (float)media_cy;
}
if (s->do_texrender) {
stinger_texrender(s, source_cx, source_cy, media_cx, media_cy);
gs_matrix_push();
gs_matrix_scale3f(scale_x, scale_y, 1.0f);
obs_source_video_render(s->media_source);
gs_matrix_pop();
gs_effect_t *e = obs_get_base_effect(OBS_EFFECT_DEFAULT);
gs_eparam_t *p = gs_effect_get_param_by_name(e, "image");
gs_texture_t *tex = gs_texrender_get_texture(s->stinger_tex);
gs_effect_set_texture(p, tex);
while (gs_effect_loop(e, "Draw"))
gs_draw_sprite(NULL, 0, source_cx, source_cy);
} else {
gs_matrix_push();
gs_matrix_scale3f(source_cxf / (float)media_cx,
source_cyf / (float)media_cy, 1.0f);
obs_source_video_render(s->media_source);
gs_matrix_pop();
}
UNUSED_PARAMETER(effect);
}
@@ -315,6 +350,7 @@ static void stinger_video_tick(void *data, float seconds)
struct stinger_info *s = data;
if (s->track_matte_enabled) {
gs_texrender_reset(s->stinger_tex);
gs_texrender_reset(s->matte_tex);
}