Native Draw

The Native Draw dialog allows you to specify which display/drawing engine will be used. you can select between standard GDI and Redsdk. GDI uses standard Windows CPU based drawing technology and CPU based OpenGL hardware acceleration. Redsdk is an OpenGL accelerated drawing engine that can substantially accelerate the speed at which entities are drawn.

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Display FPS: If this option is on a display appears in the upper right corner of the drawing space. This display track the Frame Per Second to indicate the speed of the Redsdk drawing engine.
Delay Surface Load: Delays the loading of surfaces and objects until rendering to optimize memory usage.
Caching of Model Space: Store the contents of the model space in cache to optimize presentation.
Disable GDI/RedSDK quick switching (recommended): When checked, the program will be forced to restart when switching between RedSDKand GDI (either direction). This is the recommended setting. If unchecked, you can switch without restarting, but minor display problems, etc. have occurred when doing so.
Show Normals: When on this option causes Normals to be displayed on all 3D and Surface objects.

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Note: Redsdk is dependant upon video cards which support OpenGL acceleration, and the features of that card. If you do not have an OpenGL video card you will not be able to use Redsdk.
Recommended: Switching between GDI mode and Redsdk will require a restart of TurboCAD.
Note: Redsdk conflicts with GDI's native support for OpenGL hardware acceleration If you switch to Redsdk you will be prompted to allow TurboCAD to turn native OpenGL hardware acceleration off. With Redsdk turned on the Camera Properties "Renderable objects" is always disabled, "Suppress Hidden Line" is always enabled for all pages except the Wireframe page in Camera Properties Dialog.

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