gDEBugger, an OpenGL API debugger, traces application activity on top of the OpenGL API, letting programmers see what is happening within the graphic system implementation. The new V1.3 is capable of independently enabling and disabling graphics pipeline stages to pinpoint the location of graphics performance bottlenecks. These new gDebugger features include: Ignore all OpenGL Draw Commands; Force Single-Pixel View Port; and Force 2×2 Stub Textures. By observing application performance using the heads-up FPS display when turning off individual stages, programmers can determine the exact location of bottlenecks. (www.gremedy.com)