wanp/townengine
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delay subsystems, detach opengl load thread, post background color on init

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This commit is contained in:
veclavtalica 2025-02-05 03:31:07 +03:00
parent 8110789b3a
commit cb88b4bcc5
2 changed files with 22 additions and 7 deletions
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2
src/twn_audio.c
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@ -250,6 +250,8 @@ void audio_play(const char *path,
float panning)
{
if (!ctx.audio_initialized) {
SDL_InitSubSystem(SDL_INIT_AUDIO);
profile_start("audio initialization");
SDL_AudioSpec request, got;

27
src/twn_loop.c
View File

@ -21,7 +21,7 @@
#define PACKAGE_EXTENSION "btw"
static SDL_Thread *opengl_load_thread;
static SDL_sem *opengl_load_semaphore;
/* note: it drives most of IO implicitly, such as audio callbacks */
@ -334,10 +334,11 @@ ERR_PACK_MANIFEST_PATH_ALLOC_FAIL:
}
static int opengl_load_thread_fn(void *data) {
(void)data;
static int opengl_load_thread_fn(void *sem) {
SDL_assert_always(!SDL_GL_LoadLibrary(NULL));
SDL_GL_LoadLibrary(NULL);
/* signal success */
SDL_assert_always(!SDL_SemPost(sem));
return 0;
}
@ -643,7 +644,8 @@ static bool initialize(void) {
profile_end("game object load");
/* delayed as further as possible so that more work is done before we have to wait */
SDL_WaitThread(opengl_load_thread, NULL);
SDL_SemWait(opengl_load_semaphore);
SDL_DestroySemaphore(opengl_load_semaphore);
profile_end("opengl loading");
SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
@ -694,6 +696,11 @@ static bool initialize(void) {
/* might need this to have multiple windows */
ctx.window_id = SDL_GetWindowID(ctx.window);
/* post background color until we're doing other initialization */
render();
if (ctx.render_double_buffered)
render();
profile_start("texture and text cache initialization");
textures_cache_init(&ctx.texture_cache, ctx.window);
text_cache_init(&ctx.text_cache);
@ -760,19 +767,23 @@ int enter_loop(int argc, char **argv) {
profile_start("startup");
profile_start("SDL initialization");
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_EVENTS) == -1) {
if (SDL_Init(SDL_INIT_VIDEO) == -1) {
CRY_SDL("SDL initialization failed.");
return EXIT_FAILURE;
}
profile_end("SDL initialization");
profile_start("opengl loading");
opengl_load_thread = SDL_CreateThread(opengl_load_thread_fn, "opengl loader", NULL);
opengl_load_semaphore = SDL_CreateSemaphore(0);
SDL_Thread *opengl_load_thread = SDL_CreateThread(opengl_load_thread_fn, "opengl loader", opengl_load_semaphore);
if (!opengl_load_thread) {
CRY_SDL("Cannot create opengl loading thread: ");
return EXIT_FAILURE;
}
SDL_DetachThread(opengl_load_thread);
opengl_load_thread = NULL;
ctx.argc = argc;
ctx.argv = argv;
ctx.base_dir = SDL_GetBasePath();
@ -849,6 +860,8 @@ int enter_loop(int argc, char **argv) {
ctx.was_successful = true;
ctx.game.initialization_needed = true;
SDL_InitSubSystem(SDL_INIT_EVENTS);
profile_end("startup");
while (ctx.is_running) {