Product Application

Rev.1.1

OPT_CENTERX centers the text horizontally, OPT_CENTERY centers it vertically. OPT_CENTER centers

the text in both directions. OPT_RIGHTX right-justifies the text, so that the x is the rightmost pixel.

The value of OPT_RIGHTX is 2048. The string contain displayed text.

Ft_App_WrCoCmd_Buffer(phost, command) function write command into command buffer of

FT800/FT801. Ft_Gpu_CoCmd_Swap(phost) function swap current display list.

2.3 Points drawing

In this example, the method for drawing circles (points) in different colors and locations is presented.

You will see 4 points (red, green, blue and yellow) in different sizes and positions on the white

background. Bellow this points will be drawing text “POINTS” as described in previous sub-section.

Figure 3. Point drawing example

In the Figure 3 you can see effect of following code:

Ft_Gpu_CoCmd_Dlstart(phost);

Ft_App_WrCoCmd_Buffer(phost,CLEAR_COLOR_RGB(255,255,255));//color white

Ft_App_WrCoCmd_Buffer(phost,CLEAR(1,1,1));

Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(128, 0, 0));

Ft_App_WrCoCmd_Buffer(phost,POINT_SIZE((FT_DispWidth/5) * 16));

Ft_App_WrCoCmd_Buffer(phost,BEGIN(FTPOINTS));// start drawing points

Ft_App_WrCoCmd_Buffer(phost,VERTEX2F((FT_DispWidth/5) * 16, (FT_DispHeight/2) *

16));

Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(0, 128, 0));

Ft_App_WrCoCmd_Buffer(phost,POINT_SIZE((FT_DispWidth/6) * 16));

Ft_App_WrCoCmd_Buffer(phost,VERTEX2F((FT_DispWidth*2/5) * 16, (FT_DispHeight/2) *

16));

Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(0, 0, 128));

Ft_App_WrCoCmd_Buffer(phost,POINT_SIZE((FT_DispWidth/7) * 16));

Ft_App_WrCoCmd_Buffer(phost,VERTEX2F((FT_DispWidth*3/5) * 16, (FT_DispHeight/2) *

16));

Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(128, 128, 0));

Ft_App_WrCoCmd_Buffer(phost,POINT_SIZE((FT_DispWidth/8) * 16));

Ft_App_WrCoCmd_Buffer(phost,VERTEX2F((FT_DispWidth*4/5) * 16, (FT_DispHeight/2) *

16));

Ft_App_WrCoCmd_Buffer(phost,COLOR_RGB(0, 128, 128));

Ft_App_WrCoCmd_Buffer(phost,END());

Ft_Gpu_CoCmd_Text(phost,hoffset, voffset, 31, OPT_CENTERX, "POINTS");

Ft_App_WrCoCmd_Buffer(phost,DISPLAY());

Ft_Gpu_CoCmd_Swap(phost);

/* Download the commands into fifo */

Ft_App_Flush_Co_Buffer(phost);