1berry/obs-studio
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

decklink-output-ui: Move preview rescale to GPU

Browse Source 
Internal keyer computes with straight alpha, so use DrawAlphaDivide.
This commit is contained in:
jpark37 2022-09-06 22:05:21 -07:00
parent 06b8cef665
commit 593a0f034c
1 changed files with 51 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
UI/frontend-plugins/decklink-output-ui/decklink-ui-main.cpp
View File

@ -29,6 +29,7 @@ struct preview_output {
obs_output_t *output;
video_t *video_queue;
gs_texrender_t *texrender_premultiplied;
gs_texrender_t *texrender;
gs_stagesurf_t *stagesurfaces[STAGE_BUFFER_COUNT];
bool surf_written[STAGE_BUFFER_COUNT];
@ -120,6 +121,8 @@ static void preview_tick(void *param, float sec)
auto ctx = (struct preview_output *)param;
if (ctx->texrender_premultiplied)
gs_texrender_reset(ctx->texrender_premultiplied);
if (ctx->texrender)
gs_texrender_reset(ctx->texrender);
}
@ -135,9 +138,14 @@ void preview_output_stop()
obs_source_release(context.current_source);
obs_enter_graphics();
for (gs_stagesurf_t *surf : context.stagesurfaces)
for (gs_stagesurf_t *&surf : context.stagesurfaces) {
gs_stagesurface_destroy(surf);
surf = nullptr;
}
gs_texrender_destroy(context.texrender);
context.texrender = nullptr;
gs_texrender_destroy(context.texrender_premultiplied);
context.texrender_premultiplied = nullptr;
obs_leave_graphics();
video_output_close(context.video_queue);
@ -161,10 +169,14 @@ void preview_output_start()
obs_get_video_info(&context.ovi);
uint32_t width = context.ovi.base_width;
uint32_t height = context.ovi.base_height;
const struct video_scale_info *const conversion =
obs_output_get_video_conversion(context.output);
const uint32_t width = conversion->width;
const uint32_t height = conversion->height;
obs_enter_graphics();
context.texrender_premultiplied =
gs_texrender_create(GS_BGRA, GS_ZS_NONE);
context.texrender = gs_texrender_create(GS_BGRA, GS_ZS_NONE);
for (gs_stagesurf_t *&surf : context.stagesurfaces)
surf = gs_stagesurface_create(width, height, GS_BGRA);
@ -257,10 +269,17 @@ void render_preview_source(void *param, uint32_t cx, uint32_t cy)
if (!ctx->current_source)
return;
uint32_t width = obs_source_get_base_width(ctx->current_source);
uint32_t height = obs_source_get_base_height(ctx->current_source);
const uint32_t width = obs_source_get_base_width(ctx->current_source);
const uint32_t height = obs_source_get_base_height(ctx->current_source);
if (gs_texrender_begin(ctx->texrender, width, height)) {
const struct video_scale_info *const conversion =
obs_output_get_video_conversion(context.output);
const uint32_t scaled_width = conversion->width;
const uint32_t scaled_height = conversion->height;
gs_texrender_t *const texrender_premultiplied =
ctx->texrender_premultiplied;
if (gs_texrender_begin(texrender_premultiplied, width, height)) {
struct vec4 background;
vec4_zero(&background);
@ -274,7 +293,30 @@ void render_preview_source(void *param, uint32_t cx, uint32_t cy)
obs_source_video_render(ctx->current_source);
gs_blend_state_pop();
gs_texrender_end(ctx->texrender);
gs_texrender_end(texrender_premultiplied);
if (gs_texrender_begin(ctx->texrender, scaled_width,
scaled_height)) {
const bool previous = gs_framebuffer_srgb_enabled();
gs_enable_framebuffer_srgb(true);
gs_enable_blending(false);
gs_texture_t *const tex = gs_texrender_get_texture(
texrender_premultiplied);
gs_effect_t *const effect =
obs_get_base_effect(OBS_EFFECT_DEFAULT);
gs_effect_set_texture_srgb(
gs_effect_get_param_by_name(effect, "image"),
tex);
while (gs_effect_loop(effect, "DrawAlphaDivide")) {
gs_draw_sprite(tex, 0, 0, 0);
}
gs_enable_blending(true);
gs_enable_framebuffer_srgb(previous);
gs_texrender_end(ctx->texrender);
}
const size_t write_stage_index = ctx->stage_index;
gs_stage_texture(ctx->stagesurfaces[write_stage_index],
@ -295,8 +337,8 @@ void render_preview_source(void *param, uint32_t cx, uint32_t cy)
&ctx->video_linesize)) {
uint32_t linesize =
output_frame.linesize[0];
for (uint32_t i = 0;
i < ctx->ovi.base_height; i++) {
for (uint32_t i = 0; i < scaled_height;
i++) {
uint32_t dst_offset =
linesize * i;
uint32_t src_offset =