How does windows gdi work

Connect and share knowledge within a single location that is structured and easy to search. On wikipedia it says that GDI is an API and core operating system component responsible for representing graphical objects and transmitting them to output devices. Where does the framebuffer come into all of this? I would imagine that whatever controls the coordinate transforms controls the framebuffer as well. However it seems applications have much control of framebuffers and how to use them. I see that OpenGL has multiple types of framebuffers and functions for generating framebuffers, deleting them, ect.

And I'm reading that they are stored in video memory. I would imagine that gui frameworks that are not as heavily involved with the GPU don't store theirs in video memory. So how does this stuff work and interact with the transformations? You don't replace it. There's a certain amount of blurring of responsibilities here; some functions that "rationally" belong in USER are in GDI for performance or historical reasons. If you're using GDI, don't think about frame buffers.

Sign up to join this community. The best answers are voted up and rise to the top. In this technology, the gasoline gets highly-pressurized and than injected via a common rail fuel line directly into the combustion chamber of each cylinder. This direct injecting fuel technology requires high-pressure injection into the combustion chamber , whereas low-pressure injection is used into the intake cylinder port.

Th e GDI technology is very rapidly adopted by automotive industries, with the growth rate of 2. Before moving towards GDI technology lets discuss what is t he injection system and what are injectors and the type of injection. The injection system is one of the most accurate systems, which is used by all the automotive industries for feeding the engine.

However, in earlier days the fuel is injected into the intake manifold directly where all the cylinders are feed by a single-cylinder or one injector for two-cylinder Nowadays all the cylinder are feed by their own individual injectors.

THE major advantage of this GDI technology engine is that it increased fuel efficiency and high power output. Therefore, including emissions levels can also be controlled more accurately with the GDI technology , GDI system majorly operates on the two different modes.

Firstly , fully lean equivalence ratio composition during low load and low-speed operation. Secondly, homogeneous stoichiometric mode on higher with higher speed. Each and every mode is classified by air-fuel ration. The stoichiometric air-fuel ratio for gasoline is But in this ultra-lean mode the ratio can be high as only for limited periods this mixture is much leaner than a conventional engine which reduces the fuel consumption.

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