Correctly combine damage tracking when using multiple sources

gpu-screen-recorder.1

@@ -111,10 +111,14 @@ These are the available options for capture sources:
 - The Y position in pixels. If the number ends with % and is a number between 0 and 100 then it's a position relative to the video size
 .IP \(bu 3
 .B width
-- The width in pixels. If the number ends with % and is a number between 0 and 100 then it's a size relative to the video size
+- The width in pixels. If the number ends with % and is a number between 0 and 100 then it's a size relative to the video size.
+
+A value of 0 means to not scale the capture source and instead use the original width.
 .IP \(bu 3
 .B height
 - The height in pixels. If the number ends with % and is a number between 0 and 100 then it's a size relative to the video size
+
+A value of 0 means to not scale the capture source and instead use the original height.
 .IP \(bu 3
 .B halign
 - The horizontal alignment, should be either

src/args_parser.c

@@ -201,8 +201,6 @@ static void usage_header(void) {
     fflush(stdout);
 }
 
-// TODO: Add --list-v4l2-devices option
-
 static void usage_full(void) {
     const bool inside_flatpak = getenv("FLATPAK_ID") != NULL;
     usage_header();

src/main.cpp

@@ -4270,6 +4270,9 @@ int main(int argc, char **argv) {
         should_stop_error = false;
         bool damaged = false;
 
+        if(use_damage_tracking)
+            damaged = gsr_damage_is_damaged(&damage);
+
         for(VideoSource &video_source : video_sources) {
             gsr_capture_tick(video_source.capture);
 
@@ -4291,11 +4294,9 @@ int main(int argc, char **argv) {
                 video_source.capture_source->window_id = damage_target_window;
             }
 
-            if(use_damage_tracking)
-                damaged = gsr_damage_is_damaged(&damage);
-            else if(video_source.capture->is_damaged)
-                damaged = video_source.capture->is_damaged(video_source.capture);
-            else
+            if(video_source.capture->is_damaged)
+                damaged |= video_source.capture->is_damaged(video_source.capture);
+            else if(!use_damage_tracking)
                 damaged = true;
         }