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Shader model (vertex/pixel) API support Memory bandwidth DVMT Hardware acceleration Direct3D OpenGL OpenCL MPEG-2 VC-1 AVC; i740 1998 Desktop stand-alone Auburn 7800 220 1 3.0 (SW) / No 5.0 1.1 No 0.8 2–8 Optional external MPEG-2 decoder via Video Module Interface No No i752 1999 Portola 1240 250 6.0 (full) 8.0 (some features, no hardware ...
Pixel shaders, also known as fragment shaders, compute color and other attributes of each "fragment": a unit of rendering work affecting at most a single output pixel. The simplest kinds of pixel shaders output one screen pixel as a color value; more complex shaders with multiple inputs/outputs are also possible. [5] Pixel shaders range from ...
SSAO component of a typical game scene. The algorithm is implemented as a pixel shader, analyzing the scene depth buffer which is stored in a texture. For every pixel on the screen, the pixel shader samples the depth values around the current pixel and tries to compute the amount of occlusion from each of the sampled points.
The shader assembly language in Direct3D 8 and 9 is the main programming language for vertex and pixel shaders in Shader Model 1.0/1.1, 2.0, and 3.0. It is a direct representation of the intermediate shader bytecode which is passed to the graphics driver for execution.
The High-Level Shader Language [1] or High-Level Shading Language [2] (HLSL) is a proprietary shading language developed by Microsoft for the Direct3D 9 API to augment the shader assembly language, and went on to become the required shading language for the unified shader model of Direct3D 10 and higher.
The shaders support shader model 4.0 features. Architecturally, the GMA X3500 is very similar to the GMA X3000, [ 12 ] with both graphics cores running at 667 MHz . The major difference between them is that the GMA X3500 supports Shader Model 4.0 and DirectX 10 , whereas the earlier X3000 supports Shader Model 3.0 and DirectX 9 . [ 12 ]
For instance there might be a profile for a graphics card that supports complex pixel shaders, and another profile for one that supports only minimal pixel shaders. By creating a pixel shader for each of these profiles a supporting program enlarges the number of supported hardware platforms without sacrificing picture quality on powerful systems.'
The most important shader units are vertex shaders, geometry shaders, and pixel shaders. The Unified Shader has been introduced to take full advantage of all units. This gives a single large pool of shader units. As required, the pool is divided into different groups of shaders. A strict separation between the shader types is therefore no ...