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remove nvidiahack lib

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1. it apparently is ineffective
2. if it was effective, it's current behavior would be not exactly helpful
   (sets __GL_YIELD to NOTHING, causing busy waits on doublebuffer swapping)
3. it does for sure pollute the doublebuffer/usleep detection (setenv is set to override),
   ie. the overehad detection code gets a different opinion on __GL_YIELD than libGL

REVIEW: 111858
CCBUG: 322060
This commit is contained in:
Thomas Lübking 2013-08-03 16:17:57 +02:00
parent 71a4814f4c
commit 3c593f4357
2 changed files with 0 additions and 66 deletions
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14
CMakeLists.txt
View file

@ -313,8 +313,6 @@ if(OPENGL_FOUND)
if (DL_LIBRARY)
target_link_libraries(kdeinit_kwin ${DL_LIBRARY})
endif()
# must be after opengl, to be initialized first by the linker
target_link_libraries(kdeinit_kwin kwinnvidiahack)
elseif(OPENGLES_FOUND)
target_link_libraries(kdeinit_kwin ${kwinLibs} kwinglesutils ${OPENGLES_LIBRARIES})
set_target_properties(kdeinit_kwin PROPERTIES COMPILE_FLAGS "-DKWIN_HAVE_OPENGLES")
@ -333,18 +331,6 @@ if(OPENGLES_FOUND)
install(TARGETS kwin_gles ${INSTALL_TARGETS_DEFAULT_ARGS} )
endif()
########### next target ###############
set( kwinnvidiahack_LIB_SRCS
nvidiahack.cpp )
kde4_add_library(kwinnvidiahack SHARED ${kwinnvidiahack_LIB_SRCS})
set_target_properties(kwinnvidiahack PROPERTIES VERSION ${GENERIC_LIB_VERSION} SOVERSION ${GENERIC_LIB_SOVERSION} )
set_target_properties(kwinnvidiahack PROPERTIES OUTPUT_NAME ${KWIN_NAME}nvidiahack)
install(TARGETS kwinnvidiahack ${INSTALL_TARGETS_DEFAULT_ARGS} LIBRARY NAMELINK_SKIP)
########### install files ###############
install( FILES kwin.kcfg DESTINATION ${KCFG_INSTALL_DIR} RENAME ${KWIN_NAME}.kcfg )

52
nvidiahack.cpp
View file

@ -1,52 +0,0 @@
/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
// krazy:skip
/*
The only purpose of this file is to be later in the link order than
(nvidia's) libGL, thus being initialized by the dynamic linker before it,
allowing it to set __GL_YIELD=NOTHING soon enough for libGL to notice it.
*/
#include <stdlib.h>
#include <kdefakes.h>
class kwinnvidiahack
{
public:
kwinnvidiahack();
};
kwinnvidiahack::kwinnvidiahack()
{
const char* env = getenv("KWIN_NVIDIA_HACK");
#if 1 // turned on by default
if (env == NULL || env[ 0 ] != '0')
setenv("__GL_YIELD", "NOTHING", true);
#else // turned off by default
if (env != NULL && env[ 0 ] != '0')
setenv("__GL_YIELD", "NOTHING", true);
#endif
}
kwinnvidiahack kwinnvidiahackinst;