Fix a bug that GameStudioRenderer_StudioRenderModel and GameStudioRen…

…derer_StudioRenderFinal were not properly located in Counter-Strike.
hzqst · Sep 18, 2023 · 373360e · 373360e
1 parent 35df1ae
commit 373360e
Show file tree

Hide file tree

Showing 2 changed files with 43 additions and 1 deletion.
diff --git a/Plugins/Renderer/exportfuncs.cpp b/Plugins/Renderer/exportfuncs.cpp
@@ -1101,6 +1101,40 @@ int HUD_GetStudioModelInterface(int version, struct r_studio_interface_s **ppint
 		gRefFuncs.GameStudioRenderer_StudioSetupBones = (decltype(gRefFuncs.GameStudioRenderer_StudioSetupBones))vftable[gRefFuncs.GameStudioRenderer_StudioSetupBones_vftable_index];
 		gRefFuncs.GameStudioRenderer_StudioMergeBones = (decltype(gRefFuncs.GameStudioRenderer_StudioMergeBones))vftable[gRefFuncs.GameStudioRenderer_StudioMergeBones_vftable_index];
 
+		if (g_bIsCounterStrike)
+		{
+			g_pMetaHookAPI->DisasmRanges(gRefFuncs.GameStudioRenderer_StudioDrawPlayer, 0x100, [](void *inst, PUCHAR address, size_t instLen, int instCount, int depth, PVOID context) {
+
+				auto pinst = (cs_insn *)inst;
+
+				if (address[0] == 0xCC)
+					return TRUE;
+
+				if (pinst->id == X86_INS_RET)
+					return TRUE;
+
+				if (pinst->id == X86_INS_CALL &&
+					pinst->detail->x86.op_count == 1 &&
+					pinst->detail->x86.operands[0].type == X86_OP_MEM &&
+					pinst->detail->x86.operands[0].mem.disp >= 0x60 &&
+					pinst->detail->x86.operands[0].mem.disp <= 0x70)
+				{
+					gRefFuncs.GameStudioRenderer__StudioDrawPlayer_vftable_index = pinst->detail->x86.operands[0].mem.disp / 4;
+				}
+
+				if (gRefFuncs.GameStudioRenderer__StudioDrawPlayer_vftable_index)
+					return TRUE;
+
+				return FALSE;
+			}, 0, NULL);
+
+			if (gRefFuncs.GameStudioRenderer__StudioDrawPlayer_vftable_index == 0)
+				gRefFuncs.GameStudioRenderer__StudioDrawPlayer_vftable_index = 100 / 4;
+
+			gRefFuncs.GameStudioRenderer__StudioDrawPlayer = (decltype(gRefFuncs.GameStudioRenderer__StudioDrawPlayer))vftable[gRefFuncs.GameStudioRenderer__StudioDrawPlayer_vftable_index];
+
+		}
+
 		typedef struct
 		{
 			PVOID base;
@@ -1115,6 +1149,12 @@ int HUD_GetStudioModelInterface(int version, struct r_studio_interface_s **ppint
 		GameStudioRenderer_StudioDrawPlayer_ctx ctx = { 0 };
 
 		ctx.base = gRefFuncs.GameStudioRenderer_StudioDrawPlayer;
+
+		if (gRefFuncs.GameStudioRenderer__StudioDrawPlayer)
+		{
+			ctx.base = gRefFuncs.GameStudioRenderer__StudioDrawPlayer;
+		}
+
 		ctx.max_insts = 1000;
 		ctx.max_depth = 16;
 		ctx.walks.emplace_back(ctx.base, 0x1000, 0);

diff --git a/Plugins/Renderer/ref_int_internal.h b/Plugins/Renderer/ref_int_internal.h
@@ -120,15 +120,17 @@ typedef struct
 	void(__fastcall *GameStudioRenderer_StudioMergeBones)(void *pthis, int, model_t *pSubModel);
 	int(__fastcall *GameStudioRenderer_StudioDrawModel)(void *pthis, int, int flags);
 	int(__fastcall *GameStudioRenderer_StudioDrawPlayer)(void *pthis, int, int flags, struct entity_state_s *pplayer);
+	int(__fastcall *GameStudioRenderer__StudioDrawPlayer)(void *pthis, int, int flags, struct entity_state_s *pplayer);
 	void (__fastcall *GameStudioRenderer_StudioRenderModel)(void *pthis, int);
 	void (__fastcall *GameStudioRenderer_StudioRenderFinal)(void *pthis, int);
 
 	int GameStudioRenderer_StudioCalcAttachments_vftable_index;
 	int GameStudioRenderer_StudioSetupBones_vftable_index;
 	int GameStudioRenderer_StudioSaveBones_vftable_index;
 	int GameStudioRenderer_StudioMergeBones_vftable_index;
-	int GameStudioRenderer_StudioDrawPlayer_vftable_index;
 	int GameStudioRenderer_StudioDrawModel_vftable_index;
+	int GameStudioRenderer_StudioDrawPlayer_vftable_index;
+	int GameStudioRenderer__StudioDrawPlayer_vftable_index;
 	int GameStudioRenderer_StudioRenderModel_vftable_index;
 	int GameStudioRenderer_StudioRenderFinal_vftable_index;