MB86296 Datasheet, PDF (120/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
10.4.6 Texture blending
CORAL supports the following three blend modes for texture mapping:
Decal
This mode displays the selected texture pixel color regardless of the polygon color.
Modulate
This mode multiplies the native polygon color (C_P) and selected texture pixel color (C_T) and the
result is used for drawing. Rendering color is calculated as follows (C_O):
C₀ = C_T × C_P
Stencil
This mode selects the display color from the texture color with MSB as a flag.
MSB = 1: Texture color
MSB = 0: Polygon color
10.4.7 Bi-linear high-speed mode
Bi-linear filtering is performed at high speed by creating normal texture data in advance with four-pixel
redundancy for one pixel.
One pixel requires information of about four pixels, so an area of four times the normal area is used.
This data format can only be used only for the bi-linear filtering mode; it cannot be used for the point
sampling mode.
The wrapping mode is limited to REPEAT and the color mode islimited to 16 -bit color.
MB86296S<Coral-PA>
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Specification Manual Rev0.1