int R_Mesh_Draw_GetBuffer(rmeshbufferinfo_t *m);
// saves a section of the rendered frame to a .tga file
-void SCR_ScreenShot(char *filename, int x, int y, int width, int height);
+qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height);
// used by R_Envmap_f and internally in backend, clears the frame
void R_ClearScreen(void);
// invoke refresh of frame