From 5413332506b2929c30c169a3f68934252d39cfff Mon Sep 17 00:00:00 2001
From: NishiOwO <nishi@nishi.boats>
Date: Fri, 23 Jan 2026 15:29:32 +0900
Subject: [PATCH] introduce MwWidget->berserk

---
 include/Mw/TypeDefs.h |  2 ++
 src/abstract/time.c   |  5 -----
 src/core.c            |  3 ++-
 src/widget/opengl.c   | 42 +++++++++++++++++++++++++++++++++++++++---
 4 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/include/Mw/TypeDefs.h b/include/Mw/TypeDefs.h
index d175c2b..d6bd1da 100644
--- a/include/Mw/TypeDefs.h
+++ b/include/Mw/TypeDefs.h
@@ -104,6 +104,8 @@ struct _MwWidget {
 
 	void* root_font;
 	void* root_boldfont;
+
+	int berserk;
 };
 #endif
 
diff --git a/src/abstract/time.c b/src/abstract/time.c
index 7279978..1050c46 100644
--- a/src/abstract/time.c
+++ b/src/abstract/time.c
@@ -46,16 +46,11 @@ long MwTimeGetTick(void) {
 }
 
 void MwTimeSleep(int ms) {
-#ifdef __NetBSD__
-	usleep(ms * 100);
-#else
-	/* i don't know why this method does not work well on netbsd */
 	struct timespec ts;
 
 	ts.tv_sec  = ms / 1000;
 	ts.tv_nsec = (ms % 1000) * 1000000;
 
 	nanosleep(&ts, NULL);
-#endif
 }
 #endif
diff --git a/src/core.c b/src/core.c
index 9ec87b2..78d2a94 100644
--- a/src/core.c
+++ b/src/core.c
@@ -154,6 +154,7 @@ MwWidget MwCreateWidget(MwClass widget_class, const char* name, MwWidget parent,
 	h->destroyed	 = 0;
 	h->dark_theme	 = 0;
 	h->bgcolor	 = NULL;
+	h->berserk	 = 0;
 
 	if(parent == NULL) arrput(h->tick_list, h);
 
@@ -392,7 +393,7 @@ void MwLoop(MwWidget handle) {
 		more = over % (wait / 2);
 		t    = (tick + wait - more) - (t2 = MwTimeGetTick());
 		if(t > 0) {
-			MwTimeSleep(t);
+			if(!handle->berserk) MwTimeSleep(t);
 			tick = MwTimeGetTick();
 			over -= more;
 		} else {
diff --git a/src/widget/opengl.c b/src/widget/opengl.c
index 0dedd7f..8738b5d 100644
--- a/src/widget/opengl.c
+++ b/src/widget/opengl.c
@@ -56,7 +56,9 @@ typedef struct waylandopengl {
 #endif
 
 static int create(MwWidget handle) {
-	void* r = NULL;
+	void*	 r = NULL;
+	MwWidget w = handle;
+
 #ifdef USE_GDI
 	if(handle->lowlevel->common.type == MwLLBackendGDI) {
 		PIXELFORMATDESCRIPTOR pfd;
@@ -210,10 +212,16 @@ static int create(MwWidget handle) {
 
 	MwSetDefault(handle);
 
+	while(w->parent != NULL) w = w->parent;
+
+	w->berserk++;
+
 	return 0;
 }
 
 static void destroy(MwWidget handle) {
+	MwWidget w = handle;
+
 #ifdef USE_GDI
 	if(handle->lowlevel->common.type == MwLLBackendGDI) {
 		gdiopengl_t* o = handle->internal;
@@ -241,22 +249,48 @@ static void destroy(MwWidget handle) {
 	}
 #endif
 
+	while(w->parent != NULL) w = w->parent;
+
+	w->berserk++;
+
 	free(handle->internal);
 }
 
 static void mwOpenGLMakeCurrentImpl(MwWidget handle) {
+	/* these swap interval functions belonging here actually stink! */
+
 #ifdef USE_GDI
 	if(handle->lowlevel->common.type == MwLLBackendGDI) {
-		gdiopengl_t* o = handle->internal;
+		gdiopengl_t* o		       = handle->internal;
+		void (*swap_interval_ext)(int) = NULL;
 
 		o->wglMakeCurrent(o->dc, o->gl);
+
+		if((swap_interval_ext = MwOpenGLGetProcAddress(handle, "wglSwapIntervalEXT")) != NULL) {
+			swap_interval_ext(1);
+		}
 	}
 #endif
 #ifdef USE_X11
 	if(handle->lowlevel->common.type == MwLLBackendX11) {
-		x11opengl_t* o = handle->internal;
+		x11opengl_t* o					      = handle->internal;
+		void (*swap_interval_ext)(Display*, GLXDrawable, int) = NULL;
+		void (*swap_interval_mesa)(unsigned int)	      = NULL;
+		void (*swap_interval_sgi)(int)			      = NULL;
 
 		o->glXMakeCurrent(handle->lowlevel->x11.display, handle->lowlevel->x11.window, o->gl);
+
+		if((swap_interval_ext = MwOpenGLGetProcAddress(handle, "glXSwapIntervalEXT")) != NULL) {
+			swap_interval_ext(handle->lowlevel->x11.display, handle->lowlevel->x11.window, 1);
+		}
+
+		if((swap_interval_mesa = MwOpenGLGetProcAddress(handle, "glXSwapIntervalMESA")) != NULL) {
+			swap_interval_mesa(1);
+		}
+
+		if((swap_interval_sgi = MwOpenGLGetProcAddress(handle, "glXSwapIntervalSGI")) != NULL) {
+			swap_interval_sgi(1);
+		}
 	}
 #endif
 #ifdef USE_WAYLAND
@@ -266,6 +300,8 @@ static void mwOpenGLMakeCurrentImpl(MwWidget handle) {
 		if(!eglMakeCurrent(o->egl_display, o->egl_surface, o->egl_surface, o->egl_context)) {
 			printf("ERROR: eglMakeCurrent, %0X\n", eglGetError());
 		}
+
+		eglSwapInterval(o->egl_display, 1);
 	}
 #endif
 }