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test: Add flag to suspend drawing when occluded

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Add the flag "--suspend-when-occluded" to testgl, testgles2, and testsprite, which, when used, will suspend rendering and throttle the event loop when the occlusion flag is set on the window.
This commit is contained in:
Frank Praznik
2023-06-25 10:18:58 -04:00
parent 44536b7537
commit ef4ce8cec5
3 changed files with 97 additions and 18 deletions
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15
test/testsprite.c
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@@ -42,6 +42,7 @@ static Uint64 next_fps_check;
static Uint32 frames;
static const int fps_check_delay = 5000;
static int use_rendergeometry = 0;
static SDL_bool suspend_when_occluded;
/* Number of iterations to move sprites - used for visual tests. */
/* -1: infinite random moves (default); >=0: enables N deterministic moves */
@@ -398,6 +399,7 @@ static void loop(void)
{
Uint64 now;
int i;
int active_windows = 0;
SDL_Event event;
/* Check for events */
@@ -405,9 +407,11 @@ static void loop(void)
SDLTest_CommonEvent(state, &event, &done);
}
for (i = 0; i < state->num_windows; ++i) {
if (state->windows[i] == NULL) {
if (state->windows[i] == NULL ||
(suspend_when_occluded && (SDL_GetWindowFlags(state->windows[i]) & SDL_WINDOW_OCCLUDED))) {
continue;
}
++active_windows;
MoveSprites(state->renderers[i], sprites[i]);
}
#ifdef __EMSCRIPTEN__
@@ -416,6 +420,11 @@ static void loop(void)
}
#endif
/* If all windows are occluded, throttle the event polling to 15hz. */
if (!done && !active_windows) {
SDL_DelayNS(SDL_NS_PER_SECOND / 15);
}
frames++;
now = SDL_GetTicks();
if (now >= next_fps_check) {
@@ -485,6 +494,9 @@ int main(int argc, char *argv[])
} else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
cycle_alpha = SDL_TRUE;
consumed = 1;
} else if(SDL_strcasecmp(argv[i], "--suspend-when-occluded") == 0) {
suspend_when_occluded = SDL_TRUE;
consumed = 1;
} else if (SDL_strcasecmp(argv[i], "--use-rendergeometry") == 0) {
if (argv[i + 1]) {
if (SDL_strcasecmp(argv[i + 1], "mode1") == 0) {
@@ -512,6 +524,7 @@ int main(int argc, char *argv[])
"[--blend none|blend|add|mod|mul|sub]",
"[--cyclecolor]",
"[--cyclealpha]",
"[--suspend-when-occluded]",
"[--iterations N]",
"[--use-rendergeometry mode1|mode2]",
"[num_sprites]",