What is instant mode?

In computer graphical programming, the instant mode of the rendering status in which the normal sequences of the actions and the framework in which they exist are completely bypassed and in some cases deactivated. This means that the running application must directly call the features necessary to display everything on a display device, such as a monitor, instead of relying on congenital cycles outside the program. Immediate mode is most commonly used for programs that require the fastest possible rendering times, such as multimedia applications or video games, or used as a learning tool for learning how to use complex graphics libraries. A poorly designed or incorrectly implemented program that uses immediate mode rendering can cause and persist and persist empty screen areas, as no automatic calls are made to redraw the current framework. One variation is known as a mixed mode in which the program maintains the maintenance rendering frame at the afterA piece of contol some part through the functions of the instant mode style.

In many computer applications, rendering or graphics on display devices are done through program architecture. This means that the screen is redrawn only in response to some type of input from the program or user. It works well for programs such as text processors or web browsers, but it doesn't work for applications such as multimedia players, software rendering or video games in which the screen could be redesigned 60 or more times every second without any type of input. The solution is to use instant mode.

Instead of allowing the operating system or graphics library to control when and how the display is updated and rendered, the program will take full control and delete any obstacles between imaging devices and applicationswith the code. In this way, the program can create its own Depplay Loop, using timers and other own code, so the screen is redrawn as many or several times, how many times to achieve the desired result. One complication when using instant mode is that some of the transparent function rendering functions - such as a geometric engine - may not be available, requires the application to have its own implementation. Another problem is that the program may require a large amount of processing power to maintain the drawing loop at an acceptable speed.

Alternative to use immediate mode is the use of mixed rendering mode. In this design, the preserved frame rendering mode is maintained, so all the graphics library functionality can be used, but certain functions or methods are overwritten and replaced by a user -generated code that can enforce the existing rendering frame for operation in a way that is more of an immediate mode. This meThis can also be effective, but can also create a code that is difficult to breathe and could have unexpected results, depending on how the user code and the library code interact.