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simple-egl: Add option for fixed width/height fullscreen ratio 

As a realistic scenario used by clients.

The motivation is to have an easy way to test correct fullscreen
behavior of compositors, as they have to compensate for the smaller
buffer size by adding black bars.

Signed-off-by: Robert Mader <robert.mader@collabora.com>
This commit is contained in:
Robert Mader 2022-09-30 16:34:35 +02:00 committed by Marius Vlad
parent 0afd3428dc
commit ff459f0273
1 changed files with 12 additions and 0 deletions
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12
clients/simple-egl.c
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@ -108,6 +108,7 @@ struct window {
struct xdg_toplevel *xdg_toplevel;
EGLSurface egl_surface;
int fullscreen, maximized, opaque, buffer_bpp, frame_sync, delay;
bool fullscreen_ratio;
bool wait_for_configure;
struct wl_list window_output_list; /* struct window_output::link */
@ -356,6 +357,13 @@ update_buffer_geometry(struct window *window)
new_buffer_size.width *= window->buffer_scale;
new_buffer_size.height *= window->buffer_scale;
if (window->fullscreen && window->fullscreen_ratio) {
int new_buffer_size_min = MIN(new_buffer_size.width,
new_buffer_size.height);
new_buffer_size.width = new_buffer_size_min;
new_buffer_size.height = new_buffer_size_min;
}
if (window->buffer_size.width != new_buffer_size.width ||
window->buffer_size.height != new_buffer_size.height) {
window->buffer_size = new_buffer_size;
@ -1102,6 +1110,7 @@ usage(int error_code)
fprintf(stderr, "Usage: simple-egl [OPTIONS]\n\n"
" -d <us>\tBuffer swap delay in microseconds\n"
" -f\tRun in fullscreen mode\n"
" -r\tUse fixed width/height ratio when run in fullscreen mode\n"
" -m\tRun in maximized mode\n"
" -o\tCreate an opaque surface\n"
" -s\tUse a 16 bpp EGL config\n"
@ -1130,6 +1139,7 @@ main(int argc, char **argv)
window.buffer_bpp = 0;
window.frame_sync = 1;
window.delay = 0;
window.fullscreen_ratio = false;
wl_list_init(&display.output_list);
wl_list_init(&window.window_output_list);
@ -1139,6 +1149,8 @@ main(int argc, char **argv)
window.delay = atoi(argv[++i]);
else if (strcmp("-f", argv[i]) == 0)
window.fullscreen = 1;
else if (strcmp("-r", argv[i]) == 0)
window.fullscreen_ratio = true;
else if (strcmp("-m", argv[i]) == 0)
window.maximized = 1;
else if (strcmp("-o", argv[i]) == 0)