High Performance rCADE3D Accelerator
64-bit 2D GUI Accelerator
Integrated Features for ClearTV Display
Dual Video Windows for Videoconferencing
High Quality Video Accelerator
Extended Display Resolutions
Video Module Interface (VMI) and Vertical Blank Interval (VBI) Support
Highly Integrated Design
Enhanced AGP Bus Interface
The 3DImÓge product line brings together "best of breed" features in every category of VGA, 3D, 2D, MPEG I/II acceleration, Video Conferencing, and TV-Out. It establishes the highest level of 3D performance in the PC mass-market, creates a new bar to beat in 2D benchmark performance, produces sharp smooth dual video windows using Trident's famed TrueVideo® technology. Trident now introduces ClearTV technology, an innovation to place an entire CRT display into a PAL/NTSC mask without loss of edges or corners, and without flicker.
The 3DImÓge985 breaks the 3D bottleneck with new rCADE technology. It achieves a sustained 1.2MB polygon/second 3D rendering rate. Also, for the first time in an affordable mass-market graphics engine, an on-chip setup engine balances the 3D pipe by offloading the CPU of over 50% of the 3D computing task.
Texture features include mip-mapped lookup of palletized texels, which may be bi-linearly interpolated. Both depth-cued and constant fog effects are controlled by the hardware with OpenGL compliant blending operations. The 16-bit Z and image buffers can be fast-cleared using the block-write function of 83 or 100MHz SGRAMs. Careful conservation of bandwidth is attained using queue based pixel processing to maximize the time available for pixel drawing operations.
Fast 2D GUI operation is increasingly important as refresh rates increase to 120Hz, resolutions to 1280x1024 and higher, and pixel depths to 16 and 24 bits per pixel. Standard innovations include deep FIFO's for maximum bandwidth utilization in its 256 BLT operations, single-cycle read/write support of 83/100MHz SGRAMs, transparent BLT and support for Windows® 95 font operations.
The 3DImÓge985 offers two hardware video windows which reduce CPU loading and increase frame-rate by as much as 30% when processing the local and remote dual video conferencing data streams. Key applications include inter-home POTs (Plain-Old-Telephone) conferencing using inexpensive software that implements H.324, such as Intel's latest version of Proshare. Each 3DImÓge985 window is independent with its own YUV to RGB conversion and on-the-fly display side scaling through TrueVideo® image enhancement hardware.
On chip ClearTV technology in the 3DImÓge985 scales the CRT image into an NTSC/PAL TV without loss of edge and corner data and without flicker. TV display is one of the compelling display devices to enable movement of PCs from the home study to the home living room.
The 3DImÓge985 contains one of the fastest and proven VGA cores in the industry. Even as Direct3D (D3D) begins to attract 3D games developers, many developers continue to support legacy DOS modes for performance and backwards compatibility to the installed base of slower PCs. VGA innovations include single-cycle PCI bus transfers, single-cycle frame-buffer read/writes, and 64-bit operation.
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