[Bug 99604] kwin_x11 disabling compositing with mesa 17
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Tue Feb 28 07:53:35 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=99604
--- Comment #8 from Fabio Coatti <fabio.coatti at gmail.com> ---
(same info reported on kde bug tracker, bug
https://bugs.kde.org/show_bug.cgi?id=376801, ut maybe this can be useful so I'm
posting also here, forgive me if you consider this a duplicate.
Kwin complains due to different results from this call across mesa versions:
glReadnPixels(x, y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 4, data);
that appears in kwinglutils.cpp, line 594 or so:
static bool checkPixel(int x, int y, const QVector4D &expected, const char
*file, int line)
{
uint8_t data[4];
glReadnPixels(x, y, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, 4, data);
const QVector4D pixel{data[0] / 255.f, data[1] / 255.f, data[2] / 255.f,
data[3] / 255.f};
if (fuzzyCompare(pixel, expected))
return true;
QMessageLogger(file, line, nullptr).warning() << "Pixel was" << pixel <<
"expected" << expected;
return false;
}
With mesa17, I get this:
(never mind the numbers after pixel2, it is my addition to the code for no real
purpose :) )
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(1, 0, 0, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 0, 1, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(1, 1, 1, 1) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0.760784, 0, 0, 0)
expected QVector4D(0.44882, 0.14882, 0.14882, 1) pixel2 QVector4D(194, 0, 0, 0)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0.760784, 0, 0, 0)
expected QVector4D(0.50064, 0.80064, 0.50064, 1) pixel2 QVector4D(194, 0, 0, 0)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0.760784, 0, 0, 0)
expected QVector4D(0.05054, 0.05054, 0.35054, 1) pixel2 QVector4D(194, 0, 0, 0)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0.760784, 0, 0, 0)
expected QVector4D(1, 1, 1, 1) pixel2 QVector4D(194, 0, 0, 0)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0.3, 0, 0, 0.6) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 0.4, 0, 0.6) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0, 0, 0.5, 0.6) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0.3, 0.4, 0.5, 0.6) pixel2 QVector4D(0, 0, 0, 192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0.134646, 0.044646, 0.044646, 0.6) pixel2 QVector4D(0, 0, 0,
192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0.200256, 0.320256, 0.200256, 0.6) pixel2 QVector4D(0, 0, 0,
192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0.02527, 0.02527, 0.17527, 0.6) pixel2 QVector4D(0, 0, 0,
192)
feb 27 23:22:14 calvin kwin_x11[19991]: Pixel was QVector4D(0, 0, 0, 0.752941)
expected QVector4D(0.360172, 0.390172, 0.420172, 0.6) pixel2 QVector4D(0, 0, 0,
192)
feb 27 23:22:14 calvin kwin_x11[19991]: kwin_core: ShaderManager self test
failed
feb 27 23:22:14 calvin kwin_x11[19991]: kwin_core: Failed to initialize
compositing, compositing disabled
While with mesa13 i get the following:
feb 28 08:27:59 calvin kwin_x11[2713]: kwin_core: Initializing OpenGL
compositing
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 1, 0, 1) expected
QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 255, 0, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 1, 0, 1) expected
QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 255, 0, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 1, 0, 1) expected
QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 255, 0, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 1, 0, 1) expected
QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 255, 0, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(1, 0, 0, 1) expected
QVector4D(1, 0, 0, 1) pixel2 QVector4D(255, 0, 0, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 1, 0, 1) expected
QVector4D(0, 1, 0, 1) pixel2 QVector4D(0, 255, 0, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 0, 1, 1) expected
QVector4D(0, 0, 1, 1) pixel2 QVector4D(0, 0, 255, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(1, 1, 1, 1) expected
QVector4D(1, 1, 1, 1) pixel2 QVector4D(255, 255, 255, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.447059, 0.14902,
0.14902, 1) expected QVector4D(0.44882, 0.14882, 0.14882, 1) pixel2
QVector4D(114, 38, 38, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.501961, 0.8,
0.501961, 1) expected QVector4D(0.50064, 0.80064, 0.50064, 1) pixel2
QVector4D(128, 204, 128, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.0509804,
0.0509804, 0.34902, 1) expected QVector4D(0.05054, 0.05054, 0.35054, 1) pixel2
QVector4D(13, 13, 89, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(1, 1, 1, 1) expected
QVector4D(1, 1, 1, 1) pixel2 QVector4D(255, 255, 255, 255)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.298039, 0, 0, 0.6)
expected QVector4D(0.3, 0, 0, 0.6) pixel2 QVector4D(76, 0, 0, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 0.4, 0, 0.6)
expected QVector4D(0, 0.4, 0, 0.6) pixel2 QVector4D(0, 102, 0, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0, 0, 0.501961, 0.6)
expected QVector4D(0, 0, 0.5, 0.6) pixel2 QVector4D(0, 0, 128, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.298039, 0.4,
0.501961, 0.6) expected QVector4D(0.3, 0.4, 0.5, 0.6) pixel2 QVector4D(76, 102,
128, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.133333, 0.0431373,
0.0431373, 0.6) expected QVector4D(0.134646, 0.044646, 0.044646, 0.6) pixel2
QVector4D(34, 11, 11, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.2, 0.321569, 0.2,
0.6) expected QVector4D(0.200256, 0.320256, 0.200256, 0.6) pixel2 QVector4D(51,
82, 51, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.0235294,
0.0235294, 0.176471, 0.6) expected QVector4D(0.02527, 0.02527, 0.17527, 0.6)
pixel2 QVector4D(6, 6, 45, 153)
feb 28 08:27:59 calvin kwin_x11[2713]: Pixel was QVector4D(0.360784, 0.388235,
0.419608, 0.6) expected QVector4D(0.360172, 0.390172, 0.420172, 0.6) pixel2
QVector4D(92, 99, 107, 153)
So maybe something causes the two versions (13 and 17) to give different
results to the same api call.
HTH.
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