-// Created on: 2011-09-20
-// Created by: Sergey ZERCHANINOV
-// Copyright (c) 2011-2014 OPEN CASCADE SAS
-//
-// This file is part of Open CASCADE Technology software library.
-//
-// 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, with special exception defined in the file
-// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
-// distribution for complete text of the license and disclaimer of any warranty.
-//
-// Alternatively, this file may be used under the terms of Open CASCADE
-// commercial license or contractual agreement.
-
-#include <OpenGl_GlCore11.hxx>
-
-#include <OpenGl_Display.hxx>
-#include <OpenGl_Context.hxx>
-#include <OpenGl_Light.hxx>
-
-#include <OSD_Environment.hxx>
-#include <TCollection_AsciiString.hxx>
-#include <Aspect_GraphicDeviceDefinitionError.hxx>
-
-#if (!defined(_WIN32) && !defined(__WIN32__) && (!defined(__APPLE__) || defined(MACOSX_USE_GLX)))
- #include <X11/Xlib.h> // XOpenDisplay()
-#endif
-
-IMPLEMENT_STANDARD_HANDLE(OpenGl_Display,MMgt_TShared)
-IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Display,MMgt_TShared)
-
-namespace
-{
- #if (defined(_WIN32) || defined(__WIN32__)) || (defined(__APPLE__) && !defined(MACOSX_USE_GLX))
- static char* TheDummyDisplay = "DISPLAY";
- #endif
-
- static const OpenGl_Facilities myDefaultFacilities = { 1, 1, 1, 1, OpenGLMaxLights, 10000 };
-};
-
-/*----------------------------------------------------------------------*/
-#if (defined(_WIN32) || defined(__WIN32__)) || (defined(__APPLE__) && !defined(MACOSX_USE_GLX))
-OpenGl_Display::OpenGl_Display (const Handle(Aspect_DisplayConnection)& )
-#else
-OpenGl_Display::OpenGl_Display (const Handle(Aspect_DisplayConnection)& theDisplayConnection)
-#endif
-: myDisplay(NULL),
- myFacilities(myDefaultFacilities),
- myDBuffer(Standard_True),
- myDither(Standard_True),
- myBackDither(Standard_False),
- mySymPerspective(Standard_False),
- myOffsetFactor(1.F),
- myOffsetUnits(0.F),
- myAntiAliasingMode(3),
- myLinestyleBase(0),
- myPatternBase(0)
-{
-#if (defined(_WIN32) || defined(__WIN32__)) || (defined(__APPLE__) && !defined(MACOSX_USE_GLX))
- myDisplay = TheDummyDisplay;
-#else
- myDisplay = theDisplayConnection->GetDisplay();
-#endif
-
- Init();
-}
-
-/*----------------------------------------------------------------------*/
-
-OpenGl_Display::~OpenGl_Display ()
-{
- ReleaseAttributes (NULL);
- myDisplay = NULL;
-}
-
-void OpenGl_Display::ReleaseAttributes (const OpenGl_Context* theGlCtx)
-{
- // Delete line styles
- if (myLinestyleBase != 0)
- {
- if (theGlCtx->IsValid())
- {
- glDeleteLists ((GLuint )myLinestyleBase, 5);
- }
- myLinestyleBase = 0;
- }
- // Delete surface patterns
- if (myPatternBase != 0)
- {
- if (theGlCtx->IsValid())
- {
- glDeleteLists ((GLuint )myPatternBase, TEL_HS_USER_DEF_START);
- }
- myPatternBase = 0;
- }
-}
-
-/*----------------------------------------------------------------------*/
-
-void OpenGl_Display::Init()
-{
- if (myDisplay != NULL)
- {
- #if (!defined(_WIN32) && !defined(__WIN32__) && (!defined(__APPLE__) || defined(MACOSX_USE_GLX)))
- XSynchronize ((Display* )myDisplay, (getenv("CALL_SYNCHRO_X") != NULL) ? 1 : 0);
-
- if (getenv("CSF_GraphicSync") != NULL)
- XSynchronize ((Display* )myDisplay, 1);
-
- // does the server know about OpenGL & GLX?
- int aDummy;
- if (!XQueryExtension ((Display* )myDisplay, "GLX", &aDummy, &aDummy, &aDummy))
- {
- #ifdef DEBUG
- std::cerr << "This system doesn't appear to support OpenGL\n";
- #endif
- }
- #endif
- }
- else
- {
- TCollection_AsciiString msg("OpenGl_Display::Init");
- #if (!defined(_WIN32) && !defined(__WIN32__) && (!defined(__APPLE__) || defined(MACOSX_USE_GLX)))
- msg += " : Cannot connect to X server ";
- msg += XDisplayName ((char*) NULL);
- #endif
- Aspect_GraphicDeviceDefinitionError::Raise(msg.ToCString());
- }
-
- if (getenv("CALL_OPENGL_NO_DBF") != NULL)
- myDBuffer = Standard_False;
-
- if (getenv("CALL_OPENGL_NO_DITHER") != NULL)
- myDither = Standard_False;
-
- if (getenv("CALL_OPENGL_NO_BACKDITHER") != NULL)
- myBackDither = Standard_False;
-
- /* OCC18942: Test if symmetric perspective projection should be turned on */
- if (getenv("CSF_SYM_PERSPECTIVE") != NULL)
- mySymPerspective = Standard_True;
-
- const char* pvalue = getenv("CALL_OPENGL_POLYGON_OFFSET");
- if (pvalue)
- {
- float v1, v2;
- const int n = sscanf(pvalue, "%f %f", &v1, &v2);
- if (n > 0) myOffsetFactor = v1;
- if (n > 1) myOffsetUnits = v2;
- }
-
- pvalue = getenv("CALL_OPENGL_ANTIALIASING_MODE");
- if (pvalue)
- {
- int v;
- if ( sscanf(pvalue,"%d",&v) > 0 ) myAntiAliasingMode = v;
- }
-}
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