OpenEuphoria

EMEMCOPY.E

• Posted by Mathew Hounsell <mat.hounsell at MAILEXCITE.COM> Sep 15, 1998
• 409 views

Well....

> sequence virtualmonitor
> virtualmonitor = {{},{}}
> wt = 1023
> ht = 767
> virtualmonitor[1] = {wt, ht}
> virtualmonitor[2] = allocate(wt*ht)
> display_svga_image(1, virtualmonitor[2], {wt,ht}, {0,0})

The reason the image is skewing is the virtual screen is not as wide as the real
one. So the library copies in all the bytes but it's just not big enough. It
should be one pixel to the left.

Try allocating the correct width but still 767 high. See if it works and if it
is skewed.

I guess from the call it tries to copy the full buffer. Try allocating the
correct size. Fill the bytes that you weren't copying ( the last 767+1024 , at
virtualmonitor[2] + 1023*767 ) with a set colour, say Magenta (Pink-Ish :
63,63,00) and then if you see a Magenta line around the bottom it is copying the
full screen. Otherwise the library might be of by one, copying to little. But
that shouldn't cause a Causeway Exception.
---
Sincerely,
Mathew Hounsell
Mat.Hounsell at Mailexcite.Com




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