libobs: Add obs_display_update_color_space

libobs/obs-display.c

@@ -124,6 +124,18 @@ void obs_display_resize(obs_display_t *display, uint32_t cx, uint32_t cy)
 	pthread_mutex_unlock(&display->draw_info_mutex);
 }
 
+void obs_display_update_color_space(obs_display_t *display)
+{
+	if (!display)
+		return;
+
+	pthread_mutex_lock(&display->draw_info_mutex);
+
+	display->update_color_space = true;
+
+	pthread_mutex_unlock(&display->draw_info_mutex);
+}
+
 void obs_display_add_draw_callback(obs_display_t *display,
 				   void (*draw)(void *param, uint32_t cx,
 						uint32_t cy),
@@ -155,7 +167,8 @@ void obs_display_remove_draw_callback(obs_display_t *display,
 }
 
 static inline void render_display_begin(struct obs_display *display,
-					uint32_t cx, uint32_t cy)
+					uint32_t cx, uint32_t cy,
+					bool update_color_space)
 {
 	struct vec4 clear_color;
 
@@ -165,11 +178,16 @@ static inline void render_display_begin(struct obs_display *display,
 		gs_resize(cx, cy);
 		display->cx = cx;
 		display->cy = cy;
+	} else if (update_color_space) {
+		gs_update_color_space();
 	}
 
 	gs_begin_scene();
 
-	vec4_from_rgba(&clear_color, display->background_color);
+	if (gs_get_color_space() == GS_CS_SRGB)
+		vec4_from_rgba(&clear_color, display->background_color);
+	else
+		vec4_from_rgba_srgb(&clear_color, display->background_color);
 	clear_color.w = 1.0f;
 
 	gs_clear(GS_CLEAR_COLOR | GS_CLEAR_DEPTH | GS_CLEAR_STENCIL,
@@ -191,6 +209,7 @@ static inline void render_display_end()
 void render_display(struct obs_display *display)
 {
 	uint32_t cx, cy;
+	bool update_color_space;
 
 	if (!display || !display->enabled)
 		return;
@@ -203,12 +222,15 @@ void render_display(struct obs_display *display)
 
 	cx = display->next_cx;
 	cy = display->next_cy;
+	update_color_space = display->update_color_space;
+
+	display->update_color_space = false;
 
 	pthread_mutex_unlock(&display->draw_info_mutex);
 
 	/* -------------------------------------------- */
 
-	render_display_begin(display, cx, cy);
+	render_display_begin(display, cx, cy, update_color_space);
 
 	pthread_mutex_lock(&display->draw_callbacks_mutex);
 

libobs/obs-internal.h

@@ -204,6 +204,7 @@ extern void obs_view_free(struct obs_view *view);
 /* displays */
 
 struct obs_display {
+	bool update_color_space;
 	bool enabled;
 	uint32_t cx, cy;
 	uint32_t next_cx, next_cy;

libobs/obs.h

@@ -887,6 +887,9 @@ EXPORT void obs_display_destroy(obs_display_t *display);
 EXPORT void obs_display_resize(obs_display_t *display, uint32_t cx,
 			       uint32_t cy);
 
+/** Updates the color space of this display */
+EXPORT void obs_display_update_color_space(obs_display_t *display);
+
 /**
  * Adds a draw callback for this display context
  *