Hi,
Maybe check that intel_gpu_workaround was called to s_hdc_real instead of
s_hdc?
On Tue, Jan 17, 2017 at 2:10 PM, skywind3000 wrote:
> Recently, I am trying to implement a double buffer for gui_win32.c by:
>
> 1. rename s_hdc to s_hdc_real
> 2. creat a off-screen HDC named s_hdc, all the drawing from gui_win32.c
> should be redirected to it.
> 3. BitBlt from s_hdc to s_hdc_real after WndProc, the screen should be
> updated.
>
> It works in most of time, but when I press CTRL+D to scroll down half a
> screen
> I find only the bottom half of TextArea has been updated, the top half
> hasn't been updated yet, there are still old characters before CTRL+D on
> the top half.
>
> I search all the reference of s_hdc and s_textArea but can not find any
> clue.
>
> Can anybody figure out what's wrong here ?
>
>
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