add hooks for getting/setting viewport

sd805 · Jun 8, 2022 · 54431c5 · 54431c5
1 parent 15a77e5
commit 54431c5
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Showing 5 changed files with 52 additions and 0 deletions.
diff --git a/L4D2VR/hooks.cpp b/L4D2VR/hooks.cpp
@@ -26,6 +26,9 @@ Hooks::Hooks(Game *game)
 	hkReadUsercmd.enableHook();
 	hkWriteUsercmdDeltaToBuffer.enableHook();
 	hkWriteUsercmd.enableHook();
+	hkAdjustEngineViewport.enableHook();
+	hkViewport.enableHook();
+	hkGetViewport.enableHook();
 }
 
 Hooks::~Hooks()
@@ -70,6 +73,15 @@ int Hooks::initSourceHooks()
 	LPVOID WriteUsercmdAddr = (LPVOID)(m_Game->m_Offsets->WriteUsercmd.address);
 	hkWriteUsercmd.createHook(WriteUsercmdAddr, &dWriteUsercmd);
 
+	LPVOID AdjustEngineViewportAddr = (LPVOID)(m_Game->m_Offsets->AdjustEngineViewport.address);
+	hkAdjustEngineViewport.createHook(AdjustEngineViewportAddr, &dAdjustEngineViewport);
+
+	LPVOID ViewportAddr = (LPVOID)(m_Game->m_Offsets->Viewport.address);
+	hkViewport.createHook(ViewportAddr, &dViewport);
+
+	LPVOID GetViewportAddr = (LPVOID)(m_Game->m_Offsets->GetViewport.address);
+	hkGetViewport.createHook(GetViewportAddr, &dGetViewport);
+
 	return 1;
 }
 
@@ -281,4 +293,23 @@ int Hooks::dWriteUsercmd(void *buf, CUserCmd *to, CUserCmd *from)
 
 	}
 	return hkWriteUsercmd.fOriginal(buf, to, from);
+}
+
+void Hooks::dAdjustEngineViewport(int &x, int &y, int &width, int &height)
+{
+	hkAdjustEngineViewport.fOriginal(x, y, width, height);
+}
+
+void Hooks::dViewport(void *ecx, void *edx, int x, int y, int width, int height)
+{
+
+	//hkViewport.fOriginal(ecx, x, y, 1800, 1800);
+	hkViewport.fOriginal(ecx, x, y, width, height);
+}
+
+void Hooks::dGetViewport(void *ecx, void *edx, int &x, int &y, int &width, int &height)
+{
+	//int newWidth = 1000;
+	//int newHeight = 1000;
+	hkGetViewport.fOriginal(ecx, x, y, width, height);
 }
diff --git a/L4D2VR/hooks.h b/L4D2VR/hooks.h
@@ -69,6 +69,9 @@ typedef float(__thiscall *tProcessUsercmds)(void *thisptr, edict_t *player, void
 typedef int(__cdecl *tReadUsercmd)(void *buf, CUserCmd *move, CUserCmd *from);
 typedef void(__thiscall *tWriteUsercmdDeltaToBuffer)(void *thisptr, int a1, void *buf, int from, int to, bool isnewcommand);
 typedef int(__cdecl *tWriteUsercmd)(void *buf, CUserCmd *to, CUserCmd *from);
+typedef int(__cdecl *tAdjustEngineViewport)(int &x, int &y, int &width, int &height);
+typedef void(__thiscall *tViewport)(void *thisptr, int x, int y, int width, int height);
+typedef void(__thiscall *tGetViewport)(void *thisptr, int &x, int &y, int &width, int &height);
 
 
 class Hooks
@@ -88,6 +91,9 @@ class Hooks
 	static inline Hook<tReadUsercmd> hkReadUsercmd;
 	static inline Hook<tWriteUsercmdDeltaToBuffer> hkWriteUsercmdDeltaToBuffer;
 	static inline Hook<tWriteUsercmd> hkWriteUsercmd;
+	static inline Hook<tAdjustEngineViewport> hkAdjustEngineViewport;
+	static inline Hook<tViewport> hkViewport;
+	static inline Hook<tGetViewport> hkGetViewport;
 
 	Hooks() {};
 	Hooks(Game *game);
@@ -108,4 +114,7 @@ class Hooks
 	static int dReadUsercmd(void *buf, CUserCmd *move, CUserCmd *from);
 	static void __fastcall dWriteUsercmdDeltaToBuffer(void *ecx, void *edx, int a1, void *buf, int from, int to, bool isnewcommand);
 	static int dWriteUsercmd(void *buf, CUserCmd *to, CUserCmd *from);
+	static void dAdjustEngineViewport(int &x, int &y, int &width, int &height);
+	static void __fastcall dViewport(void *ecx, void *edx, int x, int y, int width, int height);
+	static void __fastcall dGetViewport(void *ecx, void *edx, int &x, int &y, int &width, int &height);
 };
diff --git a/L4D2VR/l4d2vr.vcxproj b/L4D2VR/l4d2vr.vcxproj
@@ -597,6 +597,9 @@
   <ItemGroup>
     <ResourceCompile Include="..\dxvk\src\d3d9\version.rc" />
   </ItemGroup>
+  <ItemGroup>
+    <Text Include="config.txt" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

diff --git a/L4D2VR/l4d2vr.vcxproj.filters b/L4D2VR/l4d2vr.vcxproj.filters
@@ -1240,4 +1240,9 @@
       <Filter>dxvk</Filter>
     </ResourceCompile>
   </ItemGroup>
+  <ItemGroup>
+    <Text Include="config.txt">
+      <Filter>Source Files</Filter>
+    </Text>
+  </ItemGroup>
 </Project>
diff --git a/L4D2VR/offsets.h b/L4D2VR/offsets.h
@@ -44,11 +44,15 @@ class Offsets
     Offset WriteUsercmdDeltaToBuffer = { "client.dll", 0x134790, "55 8B EC 83 EC 60 0F 57 C0 8B 55 0C" };
     Offset WriteUsercmd =              { "client.dll", 0x1AAD50, "55 8B EC A1 ? ? ? ? 83 78 30 00 53 8B 5D 10 56 57" };
     Offset g_pppInput =                { "client.dll", 0xA8A22, "8B 0D ? ? ? ? 8B 01 8B 50 58 FF E2", 2 };
+    Offset AdjustEngineViewport =      { "client.dll", 0x31A890, "55 8B EC 8B 0D ? ? ? ? 85 C9 74 17" };
 
     Offset ServerFireTerrorBullets = { "server.dll", 0x3C3FC0, "55 8B EC 81 EC ? ? ? ? A1 ? ? ? ? 33 C5 89 45 FC 8B 45 08 8B 4D 10" };
     Offset ReadUserCmd =             { "server.dll", 0x205100, "55 8B EC 53 8B 5D 10 56 57 8B 7D 0C 53" };
     Offset ProcessUsercmds =         { "server.dll", 0xEF710, "55 8B EC B8 ? ? ? ? E8 ? ? ? ? A1 ? ? ? ? 33 C5 89 45 FC 8B 45 0C 8B 55 08" };
     Offset CBaseEntity_entindex =    { "server.dll", 0x25390, "8B 41 28 85 C0 75 01 C3 8B 0D ? ? ? ? 2B 41 58 C1 F8 04 C3 CC CC CC CC CC CC CC CC CC CC CC 55"};
 
     Offset GetRenderTarget = { "materialsystem.dll", 0x2CD30, "83 79 4C 00" };
+    Offset Viewport =        { "materialsystem.dll", 0x2E010, "55 8B EC 83 EC 28 8B C1" };
+    Offset GetViewport =     { "materialsystem.dll", 0x2D240, "55 8B EC 8B 41 4C 8B 49 40 8D 04 C0 83 7C 81 ? ?" };
+
 };