From b0bcf5fcdd920674685ace275e81ed20f7570ad2 Mon Sep 17 00:00:00 2001
From: Dmitry <dmitry@jeefo.net>
Date: Tue, 14 May 2019 11:38:45 +0300
Subject: [PATCH] Fixed crash when windows software renderer selected.

---
 include/engine.h   |  3 +++
 source/engine.cpp  | 23 ++++++++++++++++++++++-
 source/manager.cpp |  2 +-
 3 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/include/engine.h b/include/engine.h
index f962d20..dbc1577 100644
--- a/include/engine.h
+++ b/include/engine.h
@@ -186,6 +186,9 @@ public:
    // do actual network message processing
    void processMessages (void *ptr);
 
+   // checks whether softwared rendering is enabled
+   bool isSoftwareRenderer (void);
+
    // public inlines
 public:
    // get the current time on server
diff --git a/source/engine.cpp b/source/engine.cpp
index a4de9f0..31c8517 100644
--- a/source/engine.cpp
+++ b/source/engine.cpp
@@ -493,6 +493,27 @@ void Engine::execBotCmd (edict_t *ent, const char *fmt, ...) {
    m_argumentCount = 0;
 }
 
+bool Engine::isSoftwareRenderer (void) {
+
+   // xash always use "hw" structures
+   if (g_gameFlags & GAME_XASH_ENGINE) {
+      return false;
+   }
+
+   // dedicated server (except xash) always use "sw" structures
+   if (isDedicated ()) {
+      return true;
+   }
+
+   // and on only windows version you can use software-render engine. Linux, OSX always defaults to OpenGL
+#if defined (PLATFORM_WIN32)
+   static bool isSoftware = GetModuleHandleA ("sw");
+#else
+   static bool isSoftware = false;
+#endif
+   return isSoftware;
+}
+
 const char *Engine::getField (const char *string, size_t id) {
    // this function gets and returns a particular field in a string where several strings are concatenated
 
@@ -1279,7 +1300,7 @@ float LightMeasure::getLightLevel (const Vector &point) {
 
    // it's depends if we're are on dedicated or on listenserver
    auto recursiveCheck = [&] (void) -> bool {
-      if (!engine.isDedicated () || (g_gameFlags & GAME_XASH_ENGINE)) {
+      if (!engine.isSoftwareRenderer ()) {
          return recursiveLightPoint <msurface_hw_t, mnode_hw_t> (reinterpret_cast <mnode_hw_t *> (m_worldModel->nodes), point, endPoint);
       }
       return recursiveLightPoint <msurface_t, mnode_t> (m_worldModel->nodes, point, endPoint);
diff --git a/source/manager.cpp b/source/manager.cpp
index 03deef8..a645c8e 100644
--- a/source/manager.cpp
+++ b/source/manager.cpp
@@ -841,7 +841,7 @@ void BotManager::updateBotDifficulties (void) {
          auto bot = m_bots[i];
 
          if (bot != nullptr) {
-            m_bots[i]->m_difficulty = difficulty;
+            bot->m_difficulty = difficulty;
          }
       }
       m_lastDifficulty = difficulty;