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video: wayland: Set the surface damage region when using fullscreen viewports 

When using emulated display modes, the output size is often larger than the drawable buffer.  As the surface damage region is automatically calculated from the smaller drawable buffer size, the damage region needs to be manually set to cover the entire viewport region or visual repaint artifacts can result.
This commit is contained in:
Frank Praznik 2022-04-08 13:58:45 -04:00 committed by Ethan Lee
parent ba0ba9ef16
commit c2093fab99
2 changed files with 13 additions and 0 deletions
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12
src/video/wayland/SDL_waylandwindow.c
View File

@ -241,6 +241,11 @@ ConfigureViewport(SDL_Window *window)
GetFullScreenDimensions(window, &fs_width, &fs_height, &src_width, &src_height); GetFullScreenDimensions(window, &fs_width, &fs_height, &src_width, &src_height);
SetViewport(window, src_width, src_height, output->width, output->height); SetViewport(window, src_width, src_height, output->width, output->height);
data->damage_region.x = 0;
data->damage_region.y = 0;
data->damage_region.w = output->width;
data->damage_region.h = output->height;
data->pointer_scale_x = (float)fs_width / (float)output->width; data->pointer_scale_x = (float)fs_width / (float)output->width;
data->pointer_scale_y = (float)fs_height / (float)output->height; data->pointer_scale_y = (float)fs_height / (float)output->height;
} else { } else {
@ -253,6 +258,8 @@ ConfigureViewport(SDL_Window *window)
UnsetViewport(window); UnsetViewport(window);
} }
SDL_zero(data->damage_region);
data->pointer_scale_x = 1.0f; data->pointer_scale_x = 1.0f;
data->pointer_scale_y = 1.0f; data->pointer_scale_y = 1.0f;
} }
@ -400,6 +407,11 @@ handle_surface_frame_done(void *data, struct wl_callback *cb, uint32_t time)
SDL_WindowData *wind = (SDL_WindowData *) data; SDL_WindowData *wind = (SDL_WindowData *) data;
SDL_AtomicSet(&wind->swap_interval_ready, 1); /* mark window as ready to present again. */ SDL_AtomicSet(&wind->swap_interval_ready, 1); /* mark window as ready to present again. */
if (!SDL_RectEmpty(&wind->damage_region)) {
wl_surface_damage(wind->surface, wind->damage_region.x, wind->damage_region.y,
wind->damage_region.w, wind->damage_region.h);
}
/* reset this callback to fire again once a new frame was presented and compositor wants the next one. */ /* reset this callback to fire again once a new frame was presented and compositor wants the next one. */
wind->frame_callback = wl_surface_frame(wind->frame_surface_wrapper); wind->frame_callback = wl_surface_frame(wind->frame_surface_wrapper);
wl_callback_destroy(cb); wl_callback_destroy(cb);

1
src/video/wayland/SDL_waylandwindow.h
View File

@ -90,6 +90,7 @@ typedef struct {
float pointer_scale_x; float pointer_scale_x;
float pointer_scale_y; float pointer_scale_y;
int drawable_width, drawable_height; int drawable_width, drawable_height;
SDL_Rect damage_region;
SDL_bool needs_resize_event; SDL_bool needs_resize_event;
SDL_bool floating_resize_pending; SDL_bool floating_resize_pending;
} SDL_WindowData; } SDL_WindowData;