QMB: Fix single particle after no24bit 1 => 0

Fixes #604
Reported by hemostx

r_particles_qmb.c

@@ -348,10 +348,9 @@ void QMB_InitParticles(void)
 		Q_free(particles); // yeah, shit happens, work around
 		QMB_AllocParticles();
 	}
-	else {
-		QMB_ClearParticles (); // also re-allocc particles
-		qmb_initialized = false; // so QMB particle system will be turned off if we fail to load some texture
-	}
+
+	QMB_ClearParticles(); // re-alloc particles, and create linked list of next free particle
+	qmb_initialized = false; // so QMB particle system will be turned off if we fail to load some texture
 
 	ADD_PARTICLE_TEXTURE(ptex_none, null_texture_reference, 0, 1, 0, 0, 0, 0);
 
@@ -477,10 +476,7 @@ void QMB_ClearParticles (void)
 {
 	int	i;
 
-	if (!qmb_initialized) {
-		return;
-	}
-
+	// FIXME: if r_numparticles hasn't changed, then no-need to reallocate again.
 	Q_free(particles);		// free
 	QMB_AllocParticles();	// and alloc again
 

release-notes-latest.md

@@ -5,6 +5,7 @@ Leaving these here as bugs between dev versions of 3.6 aren't in the release not
 - Added `/vid_reload` command to reload textures, rather than full `/vid_restart`.  `/vid_reload_auto` cvar controls automatic/manual.
 - Fixed `/gl_no24bit` not affecting aliasmodel skins (3.5 bug, reported by hemostx, #605)
 - `/gl_consolefont` now falls back to 'original' on load failure, but doesn't change value (for toggling no24bit, #605)
+- Fixed toggling `/gl_no24bit` 1 => 0 causing maximum of a single QMB particle (old bug, reported by hemostx, #604)
 
 ### Changes from alpha8=>alpha9 (July 13th => November 14th, 2021)
 

release-notes.md

@@ -38,6 +38,7 @@
 - Fixed bug causing client to receive playerinfo packet before knowing which protocol extensions are enabled when using `/cl_delay_packet` on local server (#488, reported by pattah)
 - Fixed bug causing fps to affect `/cl_yawspeed`/`+left`/`+right` commands (keyboard turning) (old bug, #550, reported by veganaize)
 - Fixed bug causing missing entities when playing back demos recorded in FTE (old bug, #551, reported by lordee)
+- Fixed bug causing toggling `/gl_no24bit` 1 => 0 causing maximum of a single QMB particle (old bug, #604, reported by hemostx)
 - Translucent models are first drawn with a z-pass, to stop overdraw affecting level of translucency
 
 ### Bugs which affected 3.x