Re: Information required for cairo gl backend regarding CAIRO_OPERATOR_SOURCE

Hi,


I have attached the sample code for the issue. It takes command line argument to execute for OPERATOR SRC /OPERATOR OVER and to use cairo_paint or cairo_fill like


./sample ------->>>> EGL_BACKEND, ROP OVER WITH CLIP (works)
./sample -rop_source ------> ROP_SOURCE (NOT working)
./sample -rop_source -cairo_fill ------> ROP_SOURCE WITH FILL (works)


The attached code uses X window to render the final output.


Please let me know if there is any issue in the sample.




Thanks,


Sumit




------- Original Message -------


Sender : Yuanhan Liu<[email protected]>


Date : May 29, 2012 10:51 (GMT+09:00)


Title : Re: [cairo] Information required for cairo gl backend regarding CAIRO_OPERATOR_SOURCE


On Mon, May 28, 2012 at 02:05:22PM +0000, SUMIT PANWAR wrote:
> Hi,
>
> We are writing some test cases to compare cairo gl backend with cairo image
> backend.
>
> 1) Image clipping does not work for CAIRO_OPERATOR_SOURCE.
>
> Though it works with bounded rectangle with cairo_fill.
>
> Below applicaiton code does NOT work. It throws gl error 1282(Invalid
> Operation)
>
> ---------------------------------------------------------
> cairo_rectangle(m_cr, 0, 0, width,height);
> cairo_clip(m_cr);
> cairo_set_source_surface(m_cr,glSrcSurface, 0 , 0);
> cairo_paint(m_cr);
> ---------------------------------------------------------
> What works is below:
> -------------------------
> cairo_rectangle(m_cr, 0, 0, width,height);
> cairo_set_source_surface(m_cr, glSrcSurface, 0 , 0);
> cairo_fill(m_cr);
> -------------------------

Hi,

It would be good if you attach a full test code that can produce your
issue here.

Thanks,
Yuanhan Liu

>
> Image clipping with image surface works well.
>
> Please suggest waht could be the issue.
>
> Thanks in advance,
>
> Sumit
>
>
>
>
>
> [cid]
>
> *

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