Some of the cases that correspond to the enumeration values in the switch statement may be hardware accelerated, based on the capabilities of the graphics card on which the runtime relies. This implies that the fixed-function pipelines of both Direct3D and OpenGL use internal switch statements. These fixed functions are exposed through a fixed set of enumeration values similar to OpenGL. The fixed-function pipeline itself depends on existing algorithms standardized by Direct3D. In Microsoft® Direct3D, the programmer has two options: rely on a fixed-function pipeline or a programmable pipeline. The Direct3D portions of this component will be our primary focus in this article. In DirectX® 9.0, the features of DirectDraw® and Direct3D® are combined into a single API called DirectX Graphics. One limitation is that it can take a long time to get vendor-specific innovations incorporated into a multi-vendor standard, thereby taking the risk that the standard will become obsolete. OpenGL version 1.1 is an example of this approach to hardware interoperability. Over time, the hardware vendor can lobby the standards body to accept their proprietary extension as part of the standard. Graphics hardware vendors can innovate and create proprietary extensions through an agreed upon extension mechanism. One way to do this is to define a standard by committee and then have each vendor support that standard.
The Managed DirectX 9.0 Samples FrameworkĪ fundamental challenge of a hardware-accelerated graphics API is to enable application developers to take advantage of the rapid technology advances occurring in the 3D hardware space while allowing a certain amount of compatibility and uniformity across graphics hardware solutions.
Also, the author describes the Geometry, Texture, Device, and other classes and uses code from the Samples SDK.
This article introduces the fundamental concepts of the unmanaged Direct3D architecture and illustrates how the managed Direct3D layer abstracts the unmanaged layer. Direct3D, a major component of the DirectX Graphics subsystem, has evolved so rapidly in the last few years that the underlying programming paradigm has changed quite a bit from its origin. This article assumes you're familiar with C++ and DirectXĭirectX 9.0 is the latest evolution of the Microsoft 3D graphics technology for Windows. Introducing the New Managed Direct3D Graphics API in the.
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