Add video driver selection to settings menu (based uppon idea from webdesigner97)

3 files changed, 62 insertions, 26 deletions

diff --git a/src/main.cpp b/src/main.cpp
index 1b91edd21..9d336825e 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1365,41 +1365,43 @@ int main(int argc, char *argv[])
 	u16 fsaa = g_settings->getU16("fsaa");
 
 	// Determine driver
-
-	video::E_DRIVER_TYPE driverType;
-
-	std::string driverstring = g_settings->get("video_driver");
-
-	if (driverstring == "null")
-		driverType = video::EDT_NULL;
-	else if (driverstring == "software")
-		driverType = video::EDT_SOFTWARE;
-	else if (driverstring == "burningsvideo")
-		driverType = video::EDT_BURNINGSVIDEO;
-	else if (driverstring == "direct3d8")
-		driverType = video::EDT_DIRECT3D8;
-	else if (driverstring == "direct3d9")
-		driverType = video::EDT_DIRECT3D9;
-	else if (driverstring == "opengl")
-		driverType = video::EDT_OPENGL;
+	video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
+	static const char* driverids[] = {
+		"null",
+		"software",
+		"burningsvideo",
+		"direct3d8",
+		"direct3d9",
+		"opengl"
 #ifdef _IRR_COMPILE_WITH_OGLES1_
-	else if (driverstring == "ogles1")
-		driverType = video::EDT_OGLES1;
+		,"ogles1"
 #endif
 #ifdef _IRR_COMPILE_WITH_OGLES2_
-	else if (driverstring == "ogles2")
-		driverType = video::EDT_OGLES2;
+		,"ogles2"
 #endif
-	else {
-		errorstream << "WARNING: Invalid video_driver specified; defaulting "
-			<< "to opengl" << std::endl;
-		driverType = video::EDT_OPENGL;
+		,"invalid"
+	};
+
+	std::string driverstring = g_settings->get("video_driver");
+	for (unsigned int i = 0;
+			i < (sizeof(driverids)/sizeof(driverids[0]));
+			i++)
+	{
+		if (strcasecmp(driverstring.c_str(), driverids[i]) == 0) {
+			driverType = (video::E_DRIVER_TYPE) i;
+			break;
+		}
+
+		if (strcasecmp("invalid", driverids[i]) == 0) {
+			errorstream << "WARNING: Invalid video_driver specified; defaulting "
+				<< "to opengl" << std::endl;
+			break;
+		}
 	}
 
 	/*
 		List video modes if requested
 	*/
-
 	MyEventReceiver* receiver = new MyEventReceiver();
 
 	if (cmd_args.getFlag("videomodes")) {
diff --git a/src/script/lua_api/l_mainmenu.cpp b/src/script/lua_api/l_mainmenu.cpp
index ae2fddf6d..1760d2794 100644
--- a/src/script/lua_api/l_mainmenu.cpp
+++ b/src/script/lua_api/l_mainmenu.cpp
@@ -34,6 +34,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "sound.h"
 #include "settings.h"
 #include "main.h" // for g_settings
+#include "EDriverTypes.h"
 
 #include <IFileArchive.h>
 #include <IFileSystem.h>
@@ -1002,6 +1003,36 @@ int ModApiMainMenu::l_download_file(lua_State *L)
 }
 
 /******************************************************************************/
+int ModApiMainMenu::l_get_video_drivers(lua_State *L)
+{
+	static const char* drivernames[] = {
+		"NULL Driver",
+		"Software",
+		"Burningsvideo",
+		"Direct3D 8",
+		"Direct3D 9",
+		"OpenGL",
+		"OGLES1",
+		"OGLES2"
+	};
+	unsigned int index = 1;
+	lua_newtable(L);
+	int top = lua_gettop(L);
+
+	for (unsigned int i = irr::video::EDT_SOFTWARE;
+			i < MYMIN(irr::video::EDT_COUNT, (sizeof(drivernames)/sizeof(drivernames[0])));
+			i++) {
+		if (irr::IrrlichtDevice::isDriverSupported((irr::video::E_DRIVER_TYPE) i)) {
+			lua_pushnumber(L,index++);
+			lua_pushstring(L,drivernames[i]);
+			lua_settable(L, top);
+		}
+	}
+
+	return 1;
+}
+
+/******************************************************************************/
 int ModApiMainMenu::l_gettext(lua_State *L)
 {
 	std::wstring wtext = wstrgettext((std::string) luaL_checkstring(L, 1));
@@ -1094,6 +1125,7 @@ void ModApiMainMenu::Initialize(lua_State *L, int top)
 	API_FCT(sound_play);
 	API_FCT(sound_stop);
 	API_FCT(gettext);
+	API_FCT(get_video_drivers);
 	API_FCT(get_screen_info);
 	API_FCT(do_async_callback);
 }
diff --git a/src/script/lua_api/l_mainmenu.h b/src/script/lua_api/l_mainmenu.h
index 7a9cafd1f..1783a3f7f 100644
--- a/src/script/lua_api/l_mainmenu.h
+++ b/src/script/lua_api/l_mainmenu.h
@@ -133,6 +133,8 @@ private:
 
 	static int l_download_file(lua_State *L);
 
+	static int l_get_video_drivers(lua_State *L);
+
 	// async
 	static int l_do_async_callback(lua_State *L);