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Mon 9 Mar 2009, 19:22

DirectX Constants Optimizations for Intel Integrated Graphics

On Mon 9 Mar 2009, at 19:22, Intel Software Network Graphics Feed wrote:

DirectX Constants Optimizations for Intel Integrated Graphics

by Katen Shah, Luis Gimenez , Arzhange Safdarzadeh

The goal of this paper is to describe the behavior of constants in DirectX 9 and DirectX 10 to help developers optimize the performance of the applications in Intel Integrated Graphics.

Intel Integrated Graphics refers to Intel® Graphics Media Accelerator used in the Intel® 4 Series Chipsets (the Intel® 4500, X4500, and X4500HD GMAs). These chipsets are used in desktop G41, G43, and G45 and mobile GM45 and GM47 systems.

In general, the core of the graphics media accelerators is broken into generations: these generations are known as Gen3, Gen4, Gen5, etc. Commonly, these are known as “GenX.” Each year, more capabilities and better performance are provided by new integrated graphics cores. Intel Integrated Graphics has the largest market share for new PC shipments. Source Mercury Research (Q1/09). Therefore, it makes sense to write your 3D applications to this market segment and optimize the experience for the largest number of people.



Constants are external variables passed as parameters to the shaders; their values remain “constant” during each invocation of the shader program. Despite their name, constants are one of the most frequently changing values in a DirectX ...

Filed under: GraphicsVisual Computing
Source: Intel Software Network Graphics Feed
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