[cairo] ODP: Linux Windows differences (text)

[Luca Bacci]

Hello Bill!

I have tested with cairo_surface_write_to_png() to rule out OpenGL, that
suggests the issue is in Cairo.

Il ven 23 set 2022, 17:02 Bill Spitzak <spitzak at gmail.com> ha scritto:

> Looks like the GL driver is not doing the transparency correctly
>
> On Fri, Sep 23, 2022 at 2:09 AM Rafał Jopek <rafaljopek at hotmail.com>
> wrote:
>
>> Luca,
>>
>> I used your code did not help, the window is still unchanged
>>
>> cairo_font_options_t *options = cairo_font_options_create();
>>
>> cairo_font_options_set_hint_style ( options, CAIRO_HINT_STYLE_NONE );
>> cairo_set_font_options( cr, options );
>> cairo_font_options_destroy( options );
>>
>> -- Rafał
>>
>> ------------------------------
>> *Od:* Luca Bacci <luca.bacci982 at gmail.com>
>> *Wysłane:* piątek, 23 września 2022 10:51
>> *Do:* Rafał Jopek <rafaljopek at hotmail.com>
>> *DW:* cairo at cairographics.org <cairo at cairographics.org>
>> *Temat:* Re: [cairo] Linux Windows differences (text)
>>
>> Hello Rafał, welcome!
>>
>> I believe the difference in rendering is due to the font hinting options.
>> Try setting it to NONE instead of using the platform-default:
>>
>> static void set_font_options( cairo_t *cr )
>> {
>>   cairo_font_options_t *options = cairo_font_options_create();
>>
>>   cairo_font_options_set_hint_style ( font_options, CAIRO_HINT_STYLE_NONE
>> );
>>   cairo_set_font_options( cr, font_options );
>>   cairo_font_options_destroy( font_options );
>> }
>>
>> Regards,
>> Luca
>>
>> Il giorno ven 23 set 2022 alle ore 10:09 Rafał Jopek <
>> rafaljopek at hotmail.com> ha scritto:
>>
>> Hi,
>>
>> What is the reason for the significant differences between Linux and
>> Windows?
>> Source code was used for testing 1:1
>>
>> the screenshot can be seen here:
>> https://github.com/rjopek/glfw-cairo/issues/5
>> <https://github.com/rjopek/glfw-cairo/issues/5>
>> Linux Windows differences (text) · Issue #5 · rjopek/glfw-cairo
>> <https://github.com/rjopek/glfw-cairo/issues/5>
>> Hi, What is the reason for the significant differences between Linux and
>> Windows? Source code was used for testing 1:1
>> examples/image_surfaces/gl_00.c
>> github.com
>>
>> -- Rafał
>>
>>
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