Table of Contents
Advertisement
MB86R02 'Jade-D' Hardware Manual V1.64
18.10.4.6
Texture blending
MB86R02 'Jade-D' 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
result is used for drawing. Rendering color is calculated as follows (C
C
Stencil
This mode selects the display color from the texture color with MSB as a flag.
MSB = 1: Texture color
MSB = 0: Polygon color
18.10.4.7
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 is limited to 16-bit color.
18-158
× C
= C
0
T
P
) and selected texture pixel color (C
P
):
O
) and the
T
Advertisement
Table of Contents
