From 6227fed5be1dce37df1f24f08fa68a9a3eb6b39d Mon Sep 17 00:00:00 2001
From: nbsnl <118115392+nbsnl@users.noreply.github.com>
Date: Sat, 15 Nov 2025 23:48:28 +0300
Subject: [PATCH] Fix fullscreen startup crash caused by WASAPI audio
 initialization
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The client was crashing during fullscreen initialization due to a NULL
IMMDeviceEnumerator pointer inside miniaudio’s WASAPI backend.

Crash location:
ma_IMMDeviceEnumerator_GetDefaultAudioEndpoint
(inlined in ma_device_init_internal__wasapi)

Disassembly showed a null vtable dereference:
call qword ptr [rax+20h]

On some systems, WASAPI fails to create or retrieve the default audio endpoint
(especially in VMs, RDP sessions, missing/disabled audio devices, or timing
issues during fullscreen initialization). This results in a NULL COM pointer
being used, causing a 0xC0000005 access violation before the game window fully
appears.

Solution:
WASAPI backend has been disabled and the client now falls back to the more stable
DirectSound/WinMM audio backends.

Applied definitions:
#define MA_NO_WASAPI
#define MA_ENABLE_DSOUND
#define MA_ENABLE_WINMM

Results:
✔ Fullscreen crash completely resolved
✔ Audio still works through DirectSound
✔ Improved stability across fullscreen/windowed modes
✔ No functional drawbacks observed
---
 src/AudioLib/MaSoundInstance.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/AudioLib/MaSoundInstance.h b/src/AudioLib/MaSoundInstance.h
index 2196965..7c8e280 100644
--- a/src/AudioLib/MaSoundInstance.h
+++ b/src/AudioLib/MaSoundInstance.h
@@ -1,4 +1,7 @@
 #pragma once
+#define MA_NO_WASAPI
+#define MA_ENABLE_DSOUND
+#define MA_ENABLE_WINMM
 #include <miniaudio.h>
 
 inline constexpr float CS_CLIENT_FPS = 61.0f;