+// contents of this structure are private to gl_textures.c
+typedef struct rtexturepool_s
+{
+ int useless;
+}
+rtexturepool_t;
+
+// allocate a texture pool, to be used with R_LoadTexture
+rtexturepool_t *R_AllocTexturePool(void);
+// free a texture pool (textures can not be freed individually)
+void R_FreeTexturePool(rtexturepool_t **rtexturepool);
+
+// important technical note:
+// fragment textures must have a width that is compatible with the fragment
+// update system, to get a compliant size, use R_CompatibleFragmentWidth
+int R_CompatibleFragmentWidth(int width, int textype, int flags);
+
+// add a texture to a pool and optionally precache (upload) it
+// (note: data == NULL is perfectly acceptable)
+// (note: palette must not be NULL if using TEXTYPE_PALETTE)
+rtexture_t *R_LoadTexture1D(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTexture2D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, const qbyte *data, int textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTexture3D(rtexturepool_t *rtexturepool, const char *identifier, int width, int height, int depth, const qbyte *data, int textype, int flags, const unsigned int *palette);
+rtexture_t *R_LoadTextureCubeMap(rtexturepool_t *rtexturepool, const char *identifier, int width, const qbyte *data, int textype, int flags, const unsigned int *palette);
+
+// free a texture
+void R_FreeTexture(rtexture_t *rt);
+
+// update the image data of a texture, used by lightmap updates and
+// procedural textures.
+void R_UpdateTexture(rtexture_t *rt, qbyte *data);
+
+// location of the fragment in the texture (note: any parameter except rt can
+// be NULL)
+void R_FragmentLocation(rtexture_t *rt, int *x, int *y, float *fx1, float *fy1, float *fx2, float *fy2);
+void R_FragmentLocation3D(rtexture_t *rt, int *x, int *y, int *z, float *fx1, float *fy1, float *fz1, float *fx2, float *fy2, float *fz2);
+
+// returns the renderer dependent texture slot number (call this before each
+// use, as a texture might not have been precached)
+#define R_GetTexture(rt) ((rt) ? ((rt)->texnum >= 0 ? (rt)->texnum : R_RealGetTexture(rt)) : 0)
+int R_RealGetTexture (rtexture_t *rt);
+
+// returns true if the texture is transparent (useful for rendering code)
+int R_TextureHasAlpha(rtexture_t *rt);
+
+// returns width of texture, as was specified when it was uploaded
+int R_TextureWidth(rtexture_t *rt);
+
+// returns height of texture, as was specified when it was uploaded
+int R_TextureHeight(rtexture_t *rt);
+
+// frees processing buffers each frame, and may someday animate procedural textures
+void R_Textures_Frame(void);
+
+#endif
+