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Diffstat (limited to 'vcl/unx/source/gdi/salogl.cxx')
| -rw-r--r-- | vcl/unx/source/gdi/salogl.cxx | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/vcl/unx/source/gdi/salogl.cxx b/vcl/unx/source/gdi/salogl.cxx new file mode 100644 index 000000000000..ef2566788549 --- /dev/null +++ b/vcl/unx/source/gdi/salogl.cxx @@ -0,0 +1,393 @@ +/************************************************************************* + * + * $RCSfile: salogl.cxx,v $ + * + * $Revision: 1.1.1.1 $ + * + * last change: $Author: hr $ $Date: 2000-09-18 17:05:43 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (the "License"); You may not use this file + * except in compliance with the License. You may obtain a copy of the + * License at http://www.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#define _SV_SALOGL_CXX + +#include <salunx.h> + +#ifndef _SV_SALDATA_HXX +#include <saldata.hxx> +#endif + +#ifndef _SV_SALDISP_HXX +#include <saldisp.hxx> +#endif + +#ifndef _SV_SALOGL_HXX +#include <salogl.hxx> +#endif + +#ifndef _SV_SALGDI_HXX +#include <salgdi.hxx> +#endif + +#include <stdlib.h> +#include <stdio.h> + +// ------------ +// - Lib-Name - +// ------------ + +#define OGL_LIBNAME "libGL.so" +// ---------- +// - Macros - +// ---------- + +// NETBSD has neither RTLD_GLOBAL nor RTLD_NOW +#ifdef NETBSD +#define DLOPEN_MODE 0 +#else +#define DLOPEN_MODE (RTLD_NOW | RTLD_GLOBAL) +#endif + + +// ----------------- +// - Statics init. - +// ----------------- + +// Members +GLXContext SalOpenGL::maGLXContext = 0; +Display* SalOpenGL::mpDisplay = 0; +XVisualInfo* SalOpenGL::mpVisualInfo = 0; +BOOL SalOpenGL::mbHaveGLVisual = FALSE; + +void * SalOpenGL::mpGLLib = 0; +ULONG SalOpenGL::mnOGLState = OGL_STATE_UNLOADED; + +GLXContext (*SalOpenGL::pCreateContext)( Display *, XVisualInfo *, GLXContext, Bool ) = 0; +void (*SalOpenGL::pDestroyContext)( Display *, GLXContext ) = 0; +GLXContext (*SalOpenGL::pGetCurrentContext)( ) = 0; +Bool (*SalOpenGL::pMakeCurrent)( Display *, GLXDrawable, GLXContext ) = 0; +void (*SalOpenGL::pSwapBuffers)( Display*, GLXDrawable ) = 0; +int (*SalOpenGL::pGetConfig)( Display*, XVisualInfo*, int, int* ) = 0; +void (*SalOpenGL::pFlush)() = 0; + +// ------------- +// - SalOpenGL - +// ------------- + +SalOpenGL::SalOpenGL( SalGraphics* pGraphics ) +{ + mpDisplay = pGraphics->maGraphicsData.GetXDisplay(); + mpVisualInfo = pGraphics->maGraphicsData.GetDisplay()->GetVisual(); + maDrawable = pGraphics->maGraphicsData.GetDrawable(); +} + +// ------------------------------------------------------------------------ + +SalOpenGL::~SalOpenGL() +{ +} + +// ------------------------------------------------------------------------ + +BOOL SalOpenGL::Create() +{ + if( OGL_STATE_UNLOADED == mnOGLState ) + { + BOOL bHasGLX = FALSE; + char **ppExtensions; + int nExtensions; + + if( *DisplayString( mpDisplay ) == ':' || + ! strncmp( DisplayString( mpDisplay ), "localhost:", 10 ) + ) + { + // GLX only on local displays due to strange problems + // with remote GLX + ppExtensions = XListExtensions( mpDisplay, &nExtensions ); + for( int i=0; i < nExtensions; i++ ) + { + if( ! strncmp( "GLX", ppExtensions[ i ], 3 ) ) + { + bHasGLX = TRUE; + break; + } + } + XFreeExtensionList( ppExtensions ); +#ifdef DEBUG + if( ! bHasGLX ) + fprintf( stderr, "XServer does not support GLX extension\n" ); +#endif + } + if( bHasGLX && mpVisualInfo->c_class == TrueColor && ImplInit() ) + { + int nDoubleBuffer = 0; + int nHaveGL = 0; + pGetConfig( mpDisplay, mpVisualInfo, + GLX_USE_GL, &nHaveGL ); + pGetConfig( mpDisplay, mpVisualInfo, + GLX_DOUBLEBUFFER, &nDoubleBuffer ); + if( nHaveGL && ! nDoubleBuffer ) + { + SalDisplay* pSalDisplay = GetSalData()->GetDefDisp(); + BOOL bPreviousState = + pSalDisplay->GetXLib()->GetIgnoreXErrors(); + pSalDisplay->GetXLib()->SetIgnoreXErrors( TRUE ); + mbHaveGLVisual = TRUE; + + maGLXContext = pCreateContext( mpDisplay, mpVisualInfo, 0, True ); + if( pSalDisplay->GetXLib()->WasXError() ) + mbHaveGLVisual = FALSE; + else + pMakeCurrent( mpDisplay, maDrawable, maGLXContext ); + if( pSalDisplay->GetXLib()->WasXError() ) + mbHaveGLVisual = FALSE; + pSalDisplay->GetXLib()->SetIgnoreXErrors( bPreviousState ); + + if( mbHaveGLVisual ) + mnOGLState = OGL_STATE_VALID; + else + maGLXContext = None; + } + } + if( mnOGLState != OGL_STATE_VALID ) + { + ImplFreeLib(); + mnOGLState = OGL_STATE_INVALID; + } +#if defined DEBUG + if( mnOGLState == OGL_STATE_VALID ) + fprintf( stderr, "Using GLX on visual id %x.\n", mpVisualInfo->visualid ); + else + fprintf( stderr, "Not using GLX.\n" ); +#endif + } + + return mnOGLState == OGL_STATE_VALID ? TRUE : FALSE; +} + +// ------------------------------------------------------------------------ + +void SalOpenGL::Release() +{ + ImplFreeLib(); +} + +// ------------------------------------------------------------------------ + +void* SalOpenGL::GetOGLFnc( const String& rFncName ) +{ + if( mpGLLib ) + { + return dlsym( mpGLLib, ByteString( rFncName, RTL_TEXTENCODING_ASCII_US ).GetBuffer() ); + } + return NULL; +} + +void* SalOpenGL::GetOGLFnc( char *pFncName ) +{ + if( mpGLLib ) + { + return dlsym( mpGLLib, pFncName ); + } + return NULL; +} + +// ------------------------------------------------------------------------ + +void SalOpenGL::OGLEntry( SalGraphics* pGraphics ) +{ + GLXDrawable aDrawable = pGraphics->maGraphicsData.GetDrawable(); + if( aDrawable != maDrawable ) + { + maDrawable = aDrawable; + pMakeCurrent( mpDisplay, maDrawable, maGLXContext ); + } +} + +// ------------------------------------------------------------------------ + +void SalOpenGL::OGLExit( SalGraphics* pGraphics ) +{ +} + +// ------------------------------------------------------------------------ + +void SalOpenGL::ImplFreeLib() +{ + if( mpGLLib ) + { + if( maGLXContext && pDestroyContext ) + pDestroyContext( mpDisplay, maGLXContext ); + dlclose( mpGLLib ); + + mpGLLib = 0; + pCreateContext = 0; + pDestroyContext = 0; + pGetCurrentContext = 0; + pMakeCurrent = 0; + pSwapBuffers = 0; + pGetConfig = 0; + } +} + +// ------------------------------------------------------------------------ + +BOOL SalOpenGL::ImplInit() +{ + if( ! mpGLLib ) + { + ByteString sNoGL( getenv( "SAL_NOOPENGL" ) ); + if( sNoGL.ToLowerAscii() == "true" ) return FALSE; + mpGLLib = dlopen( OGL_LIBNAME, DLOPEN_MODE ); + } + if( ! mpGLLib ) + { +#ifdef DEBUG + fprintf( stderr, OGL_LIBNAME "could not be opened: %s\n", dlerror() ); +#endif + return FALSE; + } + + // Internal use + pCreateContext = (GLXContext(*)(Display*,XVisualInfo*,GLXContext,Bool )) + GetOGLFnc( "glXCreateContext" ); + pDestroyContext = (void(*)(Display*,GLXContext)) + GetOGLFnc( "glXDestroyContext" ); + pGetCurrentContext = (GLXContext(*)()) + GetOGLFnc( "glXGetCurrentContext" ); + pMakeCurrent = (Bool(*)(Display*,GLXDrawable,GLXContext)) + GetOGLFnc( "glXMakeCurrent" ); + pSwapBuffers=(void(*)(Display*, GLXDrawable)) + GetOGLFnc( "glXSwapBuffers" ); + pGetConfig = (int(*)(Display*, XVisualInfo*, int, int* )) + GetOGLFnc( "glXGetConfig" ); + pFlush = (void(*)()) + GetOGLFnc( "glFlush" ); + + BOOL bRet = pCreateContext && pDestroyContext && pGetCurrentContext && pMakeCurrent && pSwapBuffers && pGetConfig ? TRUE : FALSE; + +#ifdef DEBUG + if( ! bRet ) + fprintf( stderr, "could not find all needed symbols in " OGL_LIBNAME "\n" ); +#endif + + return bRet; +} + +void SalOpenGL::StartScene( SalGraphics* pGraphics ) +{ + // flush pending operations which otherwise might be drawn + // at the wrong time + XSync( mpDisplay, False ); +} + +void SalOpenGL::StopScene() +{ + if( maDrawable ) + { + pSwapBuffers( mpDisplay, maDrawable ); + pFlush(); + } +} + +void SalOpenGL::MakeVisualWeights( Display* pDisplay, + XVisualInfo* pInfos, + int *pWeights, + int nVisuals ) +{ + BOOL bHasGLX = FALSE; + char **ppExtensions; + int nExtensions,i ; + + // GLX only on local displays due to strange problems + // with remote GLX + if( ! ( *DisplayString( pDisplay ) == ':' || + !strncmp( DisplayString( pDisplay ), "localhost:", 10 ) + ) ) + return; + + ppExtensions = XListExtensions( pDisplay, &nExtensions ); + for( i=0; i < nExtensions; i++ ) + { + if( ! strncmp( "GLX", ppExtensions[ i ], 3 ) ) + { + bHasGLX = TRUE; + break; + } + } + XFreeExtensionList( ppExtensions ); + if( ! bHasGLX ) + return; + + if( ! ImplInit() ) + { + ImplFreeLib(); + return; + } + + for( i = 0; i < nVisuals; i++ ) + { + int nDoubleBuffer = 0; + int nHaveGL = 0; + if( pInfos[i].c_class == TrueColor ) + { + pGetConfig( pDisplay, &pInfos[ i ], GLX_USE_GL, &nHaveGL ); + pGetConfig( pDisplay, &pInfos[ i ], GLX_DOUBLEBUFFER, &nDoubleBuffer ); + if( nHaveGL && ! nDoubleBuffer ) + { + mbHaveGLVisual = TRUE; + pWeights[ i ] += 65536; + } + } + } +} |