This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

`devg-smi7xx.so`

Graphics driver for Silicon Motion Lynx chipset

Syntax:

io-graphics -d smi7xx [option[,option...]]
            ... &

Options:

For the general io-graphics options that can be used with this driver, see io-graphics.

Options specific to this driver:

mode_opts=config-file: Specifies the full path to smi7xx.conf, which is the configuration file for this driver. See smi7xx.conf for a list of parameters that can be configured.

Description:

The devg-smi7xx.so driver provides accelerated 2D support for the specified graphics chipset.

You can edit the smi7xx.conf configuration file to enable devg-smi7xx.so to run on your board. Follow the editing instructions in this file to specify the correct configuration for the required display mode. (For a more detailed explanation of the display settings, see the appropriate Silicon Motion documentation.)

You must specify the location of the configuration file to the devg-smi7xx.so driver via the mode_opts option of io-graphics, like this example:

io-graphics -d smi7xx xres=640,yres=480,bitpp=16,photon,
mode_opts=/etc/config/smi7xx.conf -pphoton

Supported chipsets

LynxEM+ (SM712)
Lynx3DM+ (SM722)
Cougar (SM731)

Acceleration features

Feature	Provision
Solid fills	Yes
Pattern fills	No
Onscreen blitting	Yes
Offscreen blitting	Yes
Chroma-keyed blitting	Yes
Alpha blending	No
Raster OP's	Full

Video Overlay/Scaler support

Feature	Provision
YUV formats	Yes
RGB formats	Yes
Up scaling	Yes
Down scaling	No

Other features

Feature	Provision
Hardware Cursor	Yes
TV Out	No
Video capture	Yes
DPMS (power saving)	Yes
Layer Support	3 layers

Resolution and refresh support

Display sixe (pixels)	Refresh rate(Hz)	Color depth (bits per pixel)
640x480	60	8, 15, 16, 24
800x600	60	8, 15, 16, 24
1024x768	60	8, 15, 16, 24

Restrictions:

These values are typical values; they may be dependent on your BIOS (x86) and monitor. Other resolutions and refresh rates may be set up using the smi7xx.conf driver configuration file.

Files:

This driver needs the following files available at run time:

libdisputil.so: Graphics driver utility library.
libffb.so: Software rasterization library.