https://bugs.kde.org/show_bug.cgi?id=382668
Bug ID: 382668
Summary: Fragment shader in UserDelegate.qml is not GLSL/ES
compatible, missing precision specifier
Product: plasma-integration
Version: master
Platform: Other
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: mgraess...@kde.org
Reporter: stefan.bru...@rwth-aachen.de
Target Milestone: ---
The fragment shader in:
https://cgit.kde.org/plasma-workspace.git/tree/lookandfeel/contents/components/UserDelegate.qml#n102
omits the precision specifiers required for GLSL/ES compatibility, see:
http://doc.qt.io/qt-5/qglshaderprogram.html#writing-portable-shaders
Running e.g. sddm-greeter on a GL/ES 2.0 plattform results in the following
error message:
Jul 15 09:11:11 susetest sddm-greeter[6178]: QOpenGLShader::compile(Fragment):
0:6(2): error: No precision specified in this scope for type `vec4'
0:7(2): error: No precision specified in this scope for type `float'
...
First one refers to "uniform vec4 colorBorder;", next to "float blend = 0.01;".
The vec4 {colorBorder, colorEmpty, colorSource} should be "lowp" (sufficient
for color representation), all other (used for coordinate calculations) should
be "highp".
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