Acer 553G, 5553 manual New multi-level texture cache to give optimal performance

Item (NB Cont.)	Features
• New multi-level texture cache to give optimal performance,
	greater than 8x the previous designs.
• High efficiency ring bus memory controller:
• Programmable arbitration logic maximizes memory efficiency,
	software upgradeable.
• Fully associative texture, color, and Z cache design.
• New hierarchical Z and stencil buffers with early Z Test.
• New lossless Z-buffer compression for both Z and stencil.
• Fast Z-Buffer Clear.
• Z cache optimized for real-time shadow rendering.
• Z and color compression resources virtualized to a 32-bit
	addressing space, for support of multiple render targets and
	textures simultaneously.
Motion Video Acceleration Features
• Video scaling and fully programmable YCrCb to RGB color
	space conversion for full-speed video playback and fully
	adjustable color controls.
• Adaptive de-interlacing eliminates video artifacts caused by
	displaying interlaced video on non-interlaced displays, and by
	analyzing image and using optimal de-interlacing function on a
	per-pixel basis.
• H.264 implementation is based on the ISO/IEC 14496-10 spec.
• VC-1 implementation is based on the SMPTE 421M spec.
• For the RS880MC: MPEG-2 decode acceleration for SD
	contents:
•	Hardware motion compensation.
• Hardware Inverse Discrete Cosine Transform.
•	Multiple Display Features

General

•Resolution, refresh rates, and display data can be completely independent for the two display paths.

•¡E Each display controller supports true 30 bits per pixel throughout the display pipe.

•¡E Each display path supports VGA and accelerated modes, video overlay, hardware cursor, hardware icon, and palette gamma correction.

•Supports both interlaced and non-interlaced displays.

•Full ratiometric expansion ability is supported for source desktop modes up to 1920 pixels/line.

•Maximum DAC frequency of 400 MHz.

•Supports 8, 16, 32, and 64-bpp depths for the main graphics layer:

•For 32-bpp depth, supports xRGB 8:8:8:8, xRGB 2:10:10:10, sCrYCb 8:8:8:8, and xCrYCb 2:10:10:10 data formats.

•For 64-bpp depth, supports xRGB 16:16:16:16 data format.

•Independent gamma, color conversion and correction controls for main graphics layer.

•Support for DDC1 and DDC2B+ for plug and play monitors.

•8-bit alpha blending of graphics and video overlay.

Chapter 1 21