HP Vectra VEi8 HP Vectra VEi7, VEi8 & VLi8, Technical Reference Manual (V - Page 27

Vibrant Color Quality, VCQ Rendering, Symmetric Rendering, Architecture SRA, Per Pixel Trilinear

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Core Components and Technologies AGP Graphics Controllers Vibrant Color Quality (VCQ) Rendering Vibrant Color Quality Rendering (VCQ) uses 32-bpp color accuracy throughout the rendering pipeline. VCQ is capable of rendering displayed images in 32-bpp color from source texture maps of up to 32bpp color. Additionally, VCQ architecture provides high quality analog color output to avoid 'washed out' images. VCQ delivers sharp contrast and highly saturated colors for maximum photo-realism. Symmetric Rendering Architecture (SRA) The Millennium G200's Symmetric Rendering Architecture (SRA) treats AGP memory exactly as if it were local video memory. It is able to draw to, render to and read from AGP memory using the high bandwidth of the AGP 2X bus. The G200 also uses the SRA to implement a hierarchical texturing system (HTS) for 3D rendering. With HTS, the G200 offers the storage of surfaces - either textures, bitmaps or video streams - across three levels depending on the frequency of use or the size of the texture in most cases. The first level is the large on-chip cache, the second level is the 8MB of local video memory and the third level is the AGP memory. Per Pixel Trilinear Filtering Trilinear filtering is an advanced texture filtering algorithm that provides image quality much higher than bilinear filtering and must be calculated on a per pixel basis. The trilinear filtering algorithm checks texel scale factors1 on a per pixel basis and uses the scale factor to index into two adjacent MIP maps. It then takes four texels from each MIP, bilinearly filtering each set of four pixels and then averages the results based on scale factor. Full Resolution Rendering The highest resolution source texture maps available are always used for rendering unless the application specifically provides lower resolution MIP maps to be used in conjunction with high resolution textures. The fast 3D engine of the G200 provides high performance without needing to downscale textures. Allows high quality rendering without compromising performance and prevents blurry images. 1. The texel scale factor is the ratio between the size of the rendered texture versus the size of the source texture. 27

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Core Components and Technologies
AGP Graphics Controllers
Vibrant Color Quality
(VCQ) Rendering
Vibrant Color Quality Rendering (VCQ) uses 32-bpp color accuracy
throughout the rendering pipeline. VCQ is capable of rendering
displayed images in 32-bpp color from source texture maps of up to 32-
bpp color. Additionally, VCQ architecture provides high quality analog
color output to avoid 'washed out' images. VCQ delivers sharp contrast
and highly saturated colors for maximum photo-realism.
Symmetric Rendering
Architecture (SRA)
The Millennium G200’s Symmetric Rendering Architecture (SRA) treats
AGP memory exactly as if it were local video memory. It is able to draw
to, render to and read from AGP memory using the high bandwidth of
the AGP 2X bus. The G200 also uses the SRA to implement a
hierarchical texturing system (HTS) for 3D rendering. With HTS, the
G200 offers the storage of surfaces - either textures, bitmaps or video
streams - across three levels depending on the frequency of use or the
size of the texture in most cases. The first level is the large on-chip
cache, the second level is the 8MB of local video memory and the third
level is the AGP memory.
Per Pixel Trilinear
Filtering
Trilinear filtering is an advanced texture filtering algorithm that
provides image quality much higher than bilinear filtering and must be
calculated on a per pixel basis. The trilinear filtering algorithm checks
texel scale factors
1
on a per pixel basis and uses the scale factor to index
into two adjacent MIP maps. It then takes four texels from each MIP,
bilinearly filtering each set of four pixels and then averages the results
based on scale factor.
Full Resolution
Rendering
The highest resolution source texture maps available are always used
for rendering unless the application specifically provides lower
resolution MIP maps to be used in conjunction with high resolution
textures. The fast 3D engine of the G200 provides high performance
without needing to downscale textures. Allows high quality rendering
without compromising performance and prevents blurry images.
1.
The texel scale factor is the ratio between the size of the rendered texture
versus the size of the source texture.