From 43649ce612e0e25f9c5c073b31277eb7148cad04 Mon Sep 17 00:00:00 2001
From: Maurice Heumann <mauriceheumann@gmail.com>
Date: Sat, 15 May 2021 12:33:21 +0200
Subject: [PATCH] Prepare custom texture support #185

---
 src/client/component/images.cpp | 37 +++++++++++++++++++++
 src/client/game/structs.hpp     | 58 +++++++++++++++++++++++++++++++++
 src/common/utils/hook.hpp       |  2 +-
 3 files changed, 96 insertions(+), 1 deletion(-)
 create mode 100644 src/client/component/images.cpp

diff --git a/src/client/component/images.cpp b/src/client/component/images.cpp
new file mode 100644
index 0000000..0a0c251
--- /dev/null
+++ b/src/client/component/images.cpp
@@ -0,0 +1,37 @@
+#include <std_include.hpp>
+#include "loader/component_loader.hpp"
+
+#include "game/game.hpp"
+
+#include <utils/hook.hpp>
+
+namespace images
+{
+	namespace
+	{
+		utils::hook::detour load_texture_hook;
+
+		static_assert(sizeof(game::GfxImage) == 104);
+		static_assert(offsetof(game::GfxImage, name) == (sizeof(game::GfxImage) - sizeof(void*)));
+		static_assert(offsetof(game::GfxImage, texture) == 56);
+	
+		void load_texture_stub(game::GfxImageLoadDef** load_def, game::GfxImage* image)
+		{
+			printf("Loading image: %s\n", image->name);
+			load_texture_hook.invoke(load_def, image);
+		}
+	}
+
+	class component final : public component_interface
+	{
+	public:
+		void post_unpack() override
+		{
+			if (!game::environment::is_mp()) return;
+
+			load_texture_hook.create(0x1405A21F0, load_texture_stub);
+		}
+	};
+}
+
+REGISTER_COMPONENT(images::component)
diff --git a/src/client/game/structs.hpp b/src/client/game/structs.hpp
index 3973367..e24d2ed 100644
--- a/src/client/game/structs.hpp
+++ b/src/client/game/structs.hpp
@@ -1,4 +1,5 @@
 #pragma once
+#include <d3d11.h>
 
 #define PROTOCOL 1
 
@@ -1225,6 +1226,62 @@ namespace game
 		const char* buffer;
 	};
 
+	struct GfxImageLoadDef
+	{
+		char levelCount;
+		char numElements;
+		char pad[2];
+		int flags;
+		int format;
+		int resourceSize;
+		char data[1];
+	};
+
+	union $3FA29451CE6F1FA138A5ABAB84BE9676
+	{
+		ID3D11Texture1D *linemap;
+		ID3D11Texture2D *map;
+		ID3D11Texture3D *volmap;
+		ID3D11Texture2D *cubemap;
+		GfxImageLoadDef *loadDef;
+	};
+
+	struct GfxTexture
+	{
+		$3FA29451CE6F1FA138A5ABAB84BE9676 ___u0;
+		ID3D11ShaderResourceView *shaderView;
+		ID3D11ShaderResourceView *shaderViewAlternate;
+	};
+
+	struct Picmip
+	{
+		char platform[2];
+	};
+
+	struct CardMemory
+	{
+		int platform[2];
+	};
+
+	struct GfxImage
+	{
+		char pad[36];
+		char mapType;
+		char semantic;
+		char category;
+		char flags;
+		Picmip picmip;
+		char track;
+		//CardMemory cardMemory;
+		unsigned short width;
+		unsigned short height;
+		unsigned short depth;
+		unsigned short numElements;
+		GfxTexture texture;
+		char pad2[16];
+		const char *name;
+	};
+
 	union XAssetHeader
 	{
 		void* data;
@@ -1234,6 +1291,7 @@ namespace game
 		ScriptFile* scriptfile;
 		StringTable* stringTable;
 		LuaFile* luaFile;
+		GfxImage* image;
 	};
 
 	struct XAsset
diff --git a/src/common/utils/hook.hpp b/src/common/utils/hook.hpp
index 223f18b..251131e 100644
--- a/src/common/utils/hook.hpp
+++ b/src/common/utils/hook.hpp
@@ -78,7 +78,7 @@ namespace utils::hook
 			return static_cast<T*>(this->get_original());
 		}
 
-		template <typename T, typename... Args>
+		template <typename T = void, typename... Args>
 		T invoke(Args ... args)
 		{
 			return static_cast<T(*)(Args ...)>(this->get_original())(args...);