............................Figures


Figure 1-1 XGL API and Foundation Library	2
Figure 1-2 Using DGA in the OpenWindows Environment	3
Figure 1-3 Using Xlib or PEXlib in the OpenWindows Environment	4
Figure 1-4 XGL Object Hierarchy	5
Figure 1-5 2D Viewing Pipeline	16
Figure 1-6 3D Viewing Pipeline	16
Figure 2-1 Basic View of XGL Architecture	22
Figure 2-2 High-level View of the Loadable Interface Layers	24
Figure 2-3 High-Level View of the XGL Architecture	27
Figure 2-4 Architecture at the API level	29
Figure 2-5 Device Pipeline Architecture: DpCtx Object	30
Figure 2-6 Device Pipeline Architecture: DpDev Object	31
Figure 2-7 Device Pipeline Architecture: DpMgr Object	32
Figure 2-8 Device Pipeline Architecture: DpLib Object	33
Figure 2-9 XGL Color Translation	39
Figure 3-1 Top-Level View of the XGL Class Hierarchies	42


Figure 3-2 API Class Hierarchy	43
Figure 3-3 View Cache Class Hierarchy	45
Figure 3-4 View Group Class Hierarchy	46
Figure 3-5 Pipeline Library Class Hierarchy	50
Figure 3-6 Device Pipeline Manager Class Hierarchy	52
Figure 3-7 Device-Dependent Device Class Hierarchy	53
Figure 3-8 Pipeline-Context Class Hierarchy	54
Figure 4-1 Components of the Device Object	60
Figure 4-2 Components of the Context Object	61
Figure 4-3 Device and Context Association	62
Figure 4-4 Device Association with Multiple Contexts	63
Figure 4-5 Pipeline Objects Instantiated at Runtime	67
Figure 4-6 User List	71
Figure 5-1 Rendering Through the opsVec Array	80
Figure 5-2 opsVecGen Architecture	83
Figure 5-3 Derived Data Mechanism	90
Figure 5-4 Multiplexing Primitives on MultiPolyline()	92
Figure 5-5 Stroke Group Objects in the 3D Context Object	93
Figure 5-6 Shadow Objects Created for Backing Store	96
Figure 5-7 Architecture of the Backing Store Device	96
Figure 5-8 Rendering into the Backing Store Device	99