added texture.IsValid() lua binding

Content/Documentation/ScriptingAPI-Documentation.md

@@ -437,6 +437,7 @@ Gives you the ability to render text with a custom font.
 A texture image data.
 - [constructor]Texture(opt string filename)	-- creates a texture from file
 - [outer]texturehelper -- a global helper texture creation utility
+- IsValid() : bool	-- whether the texture contains valid data, if it has been created successfully
 - GetWidth() : int
 - GetHeight() : int
 - GetDepth() : int

WickedEngine/wiTexture_BindLua.cpp

@@ -14,6 +14,7 @@ namespace wi::lua
 		lunamethod(Texture_BindLua, CreateLensDistortionNormalMap),
 		lunamethod(Texture_BindLua, Save),
 
+		lunamethod(Texture_BindLua, IsValid),
 		lunamethod(Texture_BindLua, GetWidth),
 		lunamethod(Texture_BindLua, GetHeight),
 		lunamethod(Texture_BindLua, GetDepth),
@@ -203,6 +204,11 @@ namespace wi::lua
 		return 0;
 	}
 
+	int Texture_BindLua::IsValid(lua_State* L)
+	{
+		wi::lua::SSetBool(L, resource.IsValid() && resource.GetTexture().IsValid());
+		return 1;
+	}
 	int Texture_BindLua::GetWidth(lua_State* L)
 	{
 		if (!resource.IsValid() || !resource.GetTexture().IsValid())

WickedEngine/wiTexture_BindLua.h

@@ -26,6 +26,7 @@ namespace wi::lua
 		int CreateLensDistortionNormalMap(lua_State* L);
 		int Save(lua_State* L);
 
+		int IsValid(lua_State* L);
 		int GetWidth(lua_State* L);
 		int GetHeight(lua_State* L);
 		int GetDepth(lua_State* L);

WickedEngine/wiVersion.cpp

@@ -9,7 +9,7 @@ namespace wi::version
 	// minor features, major updates, breaking compatibility changes
 	const int minor = 71;
 	// minor bug fixes, alterations, refactors, updates
-	const int revision = 562;
+	const int revision = 563;
 
 	const std::string version_string = std::to_string(major) + "." + std::to_string(minor) + "." + std::to_string(revision);