diff --git a/include/external/SDLGL_Util.h b/include/external/SDLGL_Util.h
deleted file mode 100755
index dafa571..0000000
--- a/include/external/SDLGL_Util.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*This code comes from testgl.c which is part of the SDL source distribution.
-    Available at http://libsdl.org/
-*/
-#ifndef __sdlgl_h__
-#define __sdlgl_h__
-
-#include "ZE_Includes.h"
-
-#if (GFX_BACKEND == ZE_OGL)
-int power_of_two(int input);
-GLuint SDL_GL_LoadTexture(SDL_Surface *surface, GLfloat *texcoord);
-#endif
-
-#endif //__sdlgl_h__
diff --git a/src/external/SDLGL_Util.cpp b/src/external/SDLGL_Util.cpp
deleted file mode 100755
index 1317f2c..0000000
--- a/src/external/SDLGL_Util.cpp
+++ /dev/null
@@ -1,84 +0,0 @@
-/*This code derived from testgl.c which is part of the SDL source distribution.
-    Available at http://libsdl.org/
-*/
-
-#include "external/SDLGL_Util.h"
-
-#if (GFX_BACKEND == ZE_OGL)
-
-//finds next largest power of two, needed for GL textures
-int power_of_two(int input)
-{
-    int value = 1;
-
-    while(value < input) //texture coord must be >= input
-        value <<= 1;    //value <<= 1 is the same as value *= 2
-    return value;
-}
-
-GLuint SDL_GL_LoadTexture(SDL_Surface *surface, GLfloat *texcoord)
-{
-    GLuint texture;
-    int w, h;
-    SDL_Surface *temp;
-    SDL_Rect area;
-    Uint32 saved_flags;
-    Uint8  saved_alpha;
-
-    //expand width and height to nearest powers of 2
-    w = power_of_two(surface->w);
-    h = power_of_two(surface->h);
-    texcoord[0] = 0.0f; //min X
-    texcoord[1] = 0.0f; //min Y
-    texcoord[2] = (GLfloat)surface->w / w;  //max X
-    texcoord[3] = (GLfloat)surface->h / h;  //max Y
-
-    temp = SDL_CreateRGBSurface(
-        SDL_SWSURFACE,
-        w, h,
-        32,
-#if SDL_BYTEORDER == SDL_LIL_ENDIAN //endian specific color masks
-        0x000000FF, 
-        0x0000FF00, 
-        0x00FF0000, 
-        0xFF000000
-#else
-        0xFF000000,
-        0x00FF0000, 
-        0x0000FF00, 
-        0x000000FF
-#endif
-    );
-    if(!temp)  //failure in CreateRGBSurface
-        return 0;
-
-    //save alpha
-    saved_flags = surface->flags&(SDL_SRCALPHA|SDL_RLEACCELOK);
-    saved_alpha = surface->format->alpha;
-    if((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
-        SDL_SetAlpha(surface, 0, 0);
-
-    //copy surface (do not alter passed surface to allow this function to be used in special situations)
-    area.x = 0;
-    area.y = 0;
-    area.w = static_cast<Sint16>(surface->w);
-    area.h = static_cast<Sint16>(surface->h);
-    SDL_BlitSurface(surface, &area, temp, &area);
-
-    //restore saved alpha
-    if((saved_flags & SDL_SRCALPHA) == SDL_SRCALPHA)
-        SDL_SetAlpha(surface, saved_flags, saved_alpha);
-
-    //create the OpenGL texture
-    glGenTextures(1, &texture); 
-    //setup texture parmaters
-    glBindTexture(GL_TEXTURE_2D, texture);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, temp->pixels);
-    SDL_FreeSurface(temp); //temp surface no longer needed
-
-    return texture;
-}
-
-#endif //GFX_BACKEND == OGL