Texture Mapping - HP b2600 Administration Manual
Hp b2600: supplementary guide
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- Reference manual (486 pages) ,
- Technical reference (206 pages) ,
- Supplementary manual (108 pages)
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Other features are available (listed as "Factors Affecting Performance:") but should be used with
discretion as performance is significantly slower if even one of these features is used.
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Note: The following tables were complete and accurate as of the date of publication of this document.
Updates to the table, if any are necessary, will be included in the on-line release notes for the current
release. See the 10.x_Rel_Notes file in the following directories:
/opt/graphics/PEX5/newconfig/opt/graphics/PEX5
/opt/graphics/phigs/newconfig/opt/graphics/phigs
/opt/graphics/starbase/newconfig/opt/graphics/starbase
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Texture Mapping
When the texture-mapping hardware is present, it is used completely, except for the following cases,
which bypass the geometry accelerator hardware but continue to use other texture-mapping hardware
acceleration:
• Using more than 8 lights
• Backface distinguishing
• Facet alpha
Texture-mapping hardware acceleration is completely bypassed when the following texture conditions
exist:
• Multiple textures per primitive (PEX)
• Texture maps with more than 32K texels per side (Starbase, PEX)
• No texture-mapping hardware installed (Starbase, PEX)
• Prelight texturing with DECAL mode on (PEX)
• Prelight texturing with replace mode on and boundary condition absolute (external to the texture
boundary is the original primitive color) (PEX)
• Starbase DECAL and the texture does not have ALPHA in it. (Starbase)
You can also resort to software texturing when you run into texture-memory space limitations or run out
of texture IDs.
Page 105
Graphics Administration Guide for HP-UX 10.20
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