OPENGL: Added a temporary hack to fix compilation under Windows, afte…

…r the latest changes to the SDL interface layer

backends/graphics/opengl/gltexture.h

@@ -31,6 +31,16 @@
 #undef ARRAYSIZE
 #endif
 
+// HACK: At this point in Windows platforms, common/util.h has been included
+// via common/rect.h (from backends/graphics/sdl/sdl-graphics.h), via
+// backends/graphics/openglsdl/openglsdl-graphics.h. Thus, we end up with
+// COMMON_UTIL_H defined, and ARRAYSIZE undefined (bad!). Therefore,
+// ARRAYSIZE is undefined in openglsdl-graphics.cpp. This is a temporary
+// hackish solution fo fix compilation under Windows.
+#if !defined(ARRAYSIZE) && defined(COMMON_UTIL_H)
+#define ARRAYSIZE(x) ((int)(sizeof(x) / sizeof(x[0])))
+#endif
+
 #if defined(USE_GLES)
 #include <GLES/gl.h>
 #elif defined(SDL_BACKEND)