MB86290A Datasheet, PDF (66/184 Pages) Fujitsu Component Limited. – Graphics Controller Hardware Specifications

6.4 Texture Mapping
Texture mapping is supported when the direct color mode (16 bits/pixel)
drawing frame is used.
6.4.1 Texture Size
MB86290A reads texcel data from the specified texture coordinate (S, T)
position, and pastes that data at the correlated pixel position of the polygon.
The applicable texture data size is 16, 32, 64, 128 or 256 pixels per S and T,
respectively. Texture mapping is used only when the direct color mode
(16bit/pixel) is used.
6.4.2 Texture Memory
Texture pattern data is stored in either the MB86290A internal texture buffer
or external Graphics Memory. The internal texture buffer size is 8 Kbyte and
can hold up to 64 × 64 pixels of texture. If the texture pattern size is smaller
than 64 × 64pixels, it is best to store it in the internal texture buffer because
the texture mapping speed is faster.
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