HP P Class 733/800/866MHz / 1GHz Supplementary Manual page 4

Raster, Texture, and Display Engine Chip
A single chip combines the raster, texture and display processors, maximizing the
performance and efficiency of these operations.
The Raster Processor
The raster processor converts incoming geometric primitives into pixel data for
storage in the framebuffer. It supports all RGBA OpenGL and Direct3D per-pixel
operations, including:
• Depth, alpha, and stencil tests for hidden line and hidden surface removal
(HLR/HSR), billboarding, Composite Solid Geometry (CSG) and other effects
• Linear and exponential fog for depth cueing and atmospheric effects
• Blending and logical operations for transparency effects and image processing
applications
• Antialiased lines and points
Antialiased polygons are supported through hardware accelerated full scene antialias-
ing.
The Texture Processor
The texture processor contains built-in support for OpenGL 1.1 and Direct3D texture
mapping. In addition to standard features such as mipmapping and bilinear and trilin-
ear filtering, the following features are supported:
• 3D texture maps, for volume visualization
• Depth textures, for creating shadows
• Single pass multi-texturing, up to two textures per primitive
• 16, 12, and 8 bit indexed textures
• Pre-specular texture lighting for better realism
Since textures are stored in the same block of memory as the framebuffer, desktop
size, pixel format, and texture format determine the maximum texture size. The tex-
ture processor supports texture sizes of up to 16384 x 16384.
The Display Processor
The video display processor combines the contents of the framebuffer to produce a
displayed image. Features provided by the Video Display Processor include:
• Three color Look Up Tables (LUTs), allowing individual windows to maintain
their own set of colors
• Gamma correction of 3D windows
• 8 bit/pixel or 16 bit/pixel double buffered or blended video overlay
• Synchronized stereo display, with support for industry standard stereo glasses
or head mounted displays
• A hardware accelerated asynchronous mouse cursor for improved system
responsiveness
• Intelligent buffer swaps synchronized to the display refresh rate (may be dis
abled to achieve maximum performance at the expense of image quality)
• Analog (DB15) and digital (DVI) video output connections
• Support for multiple syncs for "cave" and "cove" displays