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Starbase Graphics Performance
Optimized vs. Normal 3D Performance
Performance Optimized For: Factors Affecting Performance:
Rendering Conditions
• Best: up to 8 directional light sources, plus
ambient
• Good: a mixture of up to 8 directional and
positional light sources, plus ambient
• Directional eyepoint set with view_point
• Back face culling off, or back face culling
on with supplied geometric normals
• View clipping on
• Isotropic modeling matrix (angle-
preserving)
• shade_mode set to CMAP_FULL
• A total of more than 8 directional and
positional light sources cause a noticeable
performance degradation
• Picking
• Any of the following ways of heavily
interleaving changes:
o Frequent attribute changes (e.g.,
frequent changes of line color)
relative to the number of primitives
being drawn
o Frequent changes of the type of
primitive (e.g., switching between
polygons with polylines at a high
frequency)
o Frequent changes of vertex format
(i.e., the data being supplied with
each vertex)
o Frequent changes of modal state,
such as:
Double-buffering
Z-buffering
Shade mode
Light sources enabled
Depth cueing state
Texture mapping state
o Frequent switching between two or
more file descriptors
o Frequent mixing of Xlib and
Starbase calls
• Redundant or unnecessary setup (e.g.
setting attributes that are not relevant to the
primitives being drawn)
• Deformation on
• Model clipping on
• HLHSR in software via PowerShade (on
unaccelerated graphics devices)
Graphics Administration Guide for HP-UX 10.20
Page 112
- About this Guide 6
- Preface 8
- Document Conventions 9
- Chapter 1: Pathnames 10
- Starbase 11
- HP-PHIGS 12
- Examples 14
- Device Driver Libraries 17
- X Server Configuration 22
- Syntax Guidelines 23
- Server Options 24
- Screen Entries 24
- Sample X*screens Files 25
- Miscellaneous Topics 30
- Determining Swap Performance 30
- Supported Devices 31
- State DPMS Compliance 32
- Requirements 32
- Performance Tuning of SMT 35
- HP Color Recovery 38
- Dynamic Loading 39
- Include Inferiors Fix 39
- Enable Overlay Transparency 41
- 3-Bit Center Color 41
- Image Text Via BitMap 42
- Special Device Files 42
- Supported X Configurations 43
- Multi-Screen Support 45
- Single Logical Screen (SLS) 45
- Supported Visuals 51
- Supported Screen Options 51
- HP VISUALIZE-EG Modes 59
- Double-Buffer Support 60
- VISUALIZE-8 60
- VISUALIZE-48[XP] 62
- HCRX Colormaps 63
- HP VISUALIZE-FX (FX 67
- Changing the Monitor Type 72
- Disabling the GLX Visuals 72
- Freedom Video Formats 76
- Making an X*.hosts File 79
- Using Special Input Devices 80
- X*devices File 81
- Stopping the X Window System 86
- Customizing Keyboard Input 97
- Printing a Key Map 100
- Using the Keyboards 100
- Default Keyboard Mapping 101
- Equivalent Keys 101
- Changing Key Mapping 101
- C1429 Keyboard 102
- 46021 Keyboard 102
- Comparing the Keyboards 102
- Compatibility Considerations 103
- Re-Installing PowerShade 104
- 3D Graphics Performance 104
- Texture Mapping 105
- HLHSR mode or ID 109
- Colour mapping method 109
- Light sources enabled 109
- Depth cueing state 109
- 3D Thread-Safing 115
- SIGALRM Details 116
- SIGCHLD and the GRM Daemon 117
- Gamma Correction 118
- Gamma Value Slider 123
- Scope of Gamma Correction 123
- Shared Memory Usage 124
- Reference Documentation 125
- Synopsis 126
- Description 126
- Starting Up 127
- Display Names 128
- Access Control 129
- Geometry Specifications 130
- Window Managers 131
- Font Names 131
- Font Server Names 133
- Color Names 133
- Keyboards 135
- Options 136
- Resources 137
- Examples 141
- Diagnostics 141
- See Also 142
- Copyright 142
- Trademarks 142
- Authors 142
- Synopsis 143
- Description 143
- Options 144
- Security File Format 147
- Running From INIT 151
- Granting Access 151
- Signals 152
- Diagnostics 153
- Copyright 154
- See Also 155
- Atom Control 159
- Origin 159
- Installation 160
- Environment 162
- Proxy Manager Config File 164
- Example 165
- Proxy Manager Details 165
- Installation 169
- Resources 170
- Environment 170
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