Intel G640 CM8062307260314 User Manual
Product codes
CM8062307260314
Interfaces
28
Datasheet, Volume 1
2.4.1
3D and Video Engines for Graphics Processing
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:
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
• Includes Hierarchal-Z
• Includes Video quality enhancements
2.4.1.1
3D Engine Execution Units (EUs)
• Support 12 EUs. The EUs perform 128-bit wide execution per clock.
• Support SIMD8 instructions for vertex processing and SIMD16 instructions for pixel
• Support SIMD8 instructions for vertex processing and SIMD16 instructions for pixel
processing.
2.4.1.2
3D Pipeline
2.4.1.2.1
Vertex Fetch (VF) Stage
The VF stage executes 3DPRIMITIVE commands. Some enhancements have been
included to better support legacy D3D APIs as well as SGI OpenGL*.
included to better support legacy D3D APIs as well as SGI OpenGL*.
2.4.1.2.2
Vertex Shader (VS) Stage
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.
produces an output vertex reference for every input vertex reference received from the
VF unit, in the order received.
Figure 2-6. Processor Graphic Processing Unit Block Diagram
Plane A
Cursor B
Sprite B
Plane B
Cursor A
Sprite A
Pipe B
Pipe A
Memory
M
U
X
VGA
Video Engine
2D Engine
3D Engine
Clipper
Strip & Fan/Setup
Alpha
Blend/
Gamma/
Panel Fitter
Geometry Shader
Vertex Fetch/Vertex
Shader
Windower/IZ
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