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[kwinglutils] Drop functions related to (nearest) power of two

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Summary:
Not used anywhere in KWin and annotated that they should be removed. As
we have an ABI break in 5.9 we can remove them now.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D3398
This commit is contained in:
Martin Gräßlin 2016-11-17 13:28:34 +01:00
parent 56d9f90546
commit 00c9560519
2 changed files with 0 additions and 29 deletions
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18
libkwineffects/kwinglutils.cpp
View file

@ -145,24 +145,6 @@ bool checkGLError(const char* txt)
return hasError;
}
// TODO: Drop for Plasma 6, no longer needed after OpenGL 2.0
int nearestPowerOfTwo(int x)
{
unsigned y = static_cast<unsigned>(x);
// From Hank Warren's "Hacker's Delight", clp2() method.
// Works for up to 32-bit integers.
y = y - 1;
y = y | (y >> 1);
y = y | (y >> 2);
y = y | (y >> 4);
y = y | (y >> 8);
y = y | (y >> 16);
return static_cast<int>(y + 1);
}
//****************************************
// GLShader
//****************************************

11
libkwineffects/kwinglutils.h
View file

@ -67,17 +67,6 @@ bool KWINGLUTILS_EXPORT hasGLExtension(const QByteArray &extension);
// detect OpenGL error (add to various places in code to pinpoint the place)
bool KWINGLUTILS_EXPORT checkGLError(const char* txt);
inline bool KWINGLUTILS_EXPORT isPowerOfTwo(int x)
{
return ((x & (x - 1)) == 0);
}
/**
* @return power of two integer _greater or equal to_ x.
* E.g. nearestPowerOfTwo(513) = nearestPowerOfTwo(800) = 1024
**/
// TODO: Drop for Plasma 6, no longer needed after OpenGL 2.0
int KWINGLUTILS_EXPORT nearestPowerOfTwo(int x);
QList<QByteArray> KWINGLUTILS_EXPORT openGLExtensions();
class KWINGLUTILS_EXPORT GLShader