Intel G870 CM8062307260115 User Manual

28

Datasheet, Volume 1

The 3D graphics pipeline architecture simultaneously operates on different primitives or 
on different portions of the same primitive. All the cores are fully programmable, 
increasing the versatility of the 3D Engine. The 3D engine provides the following 
performance and power-management enhancements:

• Execution units (EU) increased to 12 from the previous 10 EUs
• Includes Hierarchal-Z
• Includes Video quality enhancements

• Support 12 EUs. The EUs perform 128-bit wide execution per clock. 
• Support SIMD8 instructions for vertex processing and SIMD16 instructions for pixel 

processing.

The VF stage executes 3DPRIMITIVE commands. Some enhancements have been 
included to better support legacy D3D APIs as well as SGI OpenGL*.

The VS stage performs shading of vertices output by the VF function. The VS unit 
produces an output vertex reference for every input vertex reference received from the 
VF unit, in the order received. 

Plane A

Cursor B

Sprite B

Plane B

Cursor A

Sprite A

Pipe B

Pipe A

Memory

M

U

X

VGA

Clipper

Strip & Fan/Setup

Alpha 

Blend/

 Gamma/

Panel Fitter

Geometry Shader

Vertex Fetch/Vertex 

Shader

Windower/IZ

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