82G33 datasheet(361/437 Pages) INTEL

361 / 437 page

Functional Description

Datasheet

361

Figure 10-4. Integrated 3D Graphics Pipeline

3D-Gfx _Pipeline

GMCH

Processor

Geometry:

Transform and Lighting, Vertex Shader

Texture Engine:

Pixels in, Textured Pixels out

Setup Engine:

Vertices in, Pixels out

Raster Engine:

Textured Pixels in, Final Pixels out

10.5.2

3D Engine

The 3D engine on the GMCH has been designed with a deep pipelined architecture,

where performance is maximized by allowing each stage of the pipeline to

simultaneously operate on different primitives or portions of the same primitive. The

GMCH supports Perspective-Correct Texture Mapping, Multitextures, Bump-Mapping,

Cubic Environment Maps, Bilinear, Trilinear and Anisotropic MIP mapped filtering,

Gouraud shading, Alpha-blending, Vertex, and Per Pixel Fog and Z/W Buffering.

The 3D pipeline subsystem performs the 3D rendering acceleration. The main blocks

of the pipeline are the setup engine, scan converter, texture pipeline, and raster

pipeline. A typical programming sequence would be to send instructions to set the

state of the pipeline followed by rending instructions containing 3D primitive vertex

data.

The engines’ performance is dependent on the memory bandwidth available. Systems

that have more bandwidth available will outperform systems with less bandwidth. The

engines’ performance is also dependent on the core clock frequency. The higher the

frequency, the more data is processed.

82G33 Datasheet(PDF) 361 Page - Intel Corporation