Bug 42385

Summary: VG_COLOR_TRANSFORM ignores alpha channel if egl config is without alpha for drawing paths
Product: Mesa Reporter: Andreas Betz <andreas.betz>
Component: OtherAssignee: mesa-dev
Status: RESOLVED MOVED QA Contact:
Severity: normal    
Priority: medium    
Version: git   
Hardware: x86 (IA32)   
OS: Windows (All)   
i915 platform: i915 features:

Description Andreas Betz 2011-10-29 13:09:18 UTC
If you set the egl config like the following:
        conflist[i++] = EGL_RED_SIZE;
        conflist[i++] = 8;

        conflist[i++] = EGL_GREEN_SIZE;
        conflist[i++] = 8;

        conflist[i++] = EGL_BLUE_SIZE;
        conflist[i++] = 8;

        conflist[i++] = EGL_ALPHA_SIZE;
        conflist[i++] = 0;

And you try to transform with a color (like 0x11223344) then the alpha part of it is skipped.

This is in contrary to the Khronos reference implementation.

(I have to admit for images it seems to work nearly correctly - i will make another ticket for an other issue.)
Comment 1 GitLab Migration User 2019-09-18 20:16:57 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/896.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.