mirror of
https://github.com/Open-Cascade-SAS/OCCT.git
synced 2026-06-22 03:16:39 +08:00
565baee64b
Handled __EMSCRIPTEN__ macros to:
- Workaround atomics (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 is undefined, but GCC atomics are provided).
- Suppress non-standard header <sys/signal.h> warning.
- Return OSD_LinuxREDHAT.
- Avoid inclusion of XLib headers.
- Skip fontconfig library.
- Enable EGL+GLES path (translated by Emscripten into WebGL).
- Skip eglCreatePbufferSurface() not implemented by Emscripten EGL.
Fixed Graphic3d_Vec4.hxx usage within Quantity_ColorRGBA.hxx.
OpenGl_ShaderManager::defaultGlslVersion() now prefers GLSL 300 es when WebGL 2.0 is available,
as there no any OpenGL ES greater than 3.0 emulation so far.
Shaders_Declarations.glsl - added workaround for GLSL compilation on WebGL 1.0
by defining Light properties accessors as macros instead of functions
('[]' : Index expression must be constant).
OpenGl_FrameBuffer::Init() - added workaround for initialization of GL_DEPTH24_STENCIL8
depth-stencil attachment on WebGL 1.0 + GL_WEBGL_depth_texture extension.
OpenGl_Context::Vec4FromQuantityColor() now considers myIsSRgbActive flag
to handle use case, when Immediate Layer is drawn directly into window buffer,
which is not sRGB-ready.
Added new sample - OCCT WebGL viewer.
116 lines
3.9 KiB
C++
Executable File
116 lines
3.9 KiB
C++
Executable File
// Copyright (c) 2013-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <Aspect_DisplayConnection.hxx>
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#include <Aspect_DisplayConnectionDefinitionError.hxx>
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#include <OSD_Environment.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(Aspect_DisplayConnection,Standard_Transient)
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// =======================================================================
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// function : Aspect_DisplayConnection
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// purpose :
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// =======================================================================
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Aspect_DisplayConnection::Aspect_DisplayConnection()
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{
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#if !defined(_WIN32) && (!defined(__APPLE__) || defined(MACOSX_USE_GLX)) && !defined(__ANDROID__) && !defined(__QNX__) && !defined(__EMSCRIPTEN__)
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myDisplay = NULL;
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myIsOwnDisplay = false;
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OSD_Environment anEnv ("DISPLAY");
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myDisplayName = anEnv.Value();
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Init (NULL);
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#endif
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}
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// =======================================================================
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// function : ~Aspect_DisplayConnection
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// purpose :
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// =======================================================================
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Aspect_DisplayConnection::~Aspect_DisplayConnection()
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{
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#if !defined(_WIN32) && (!defined(__APPLE__) || defined(MACOSX_USE_GLX)) && !defined(__ANDROID__) && !defined(__QNX__) && !defined(__EMSCRIPTEN__)
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if (myDisplay != NULL
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&& myIsOwnDisplay)
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{
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XCloseDisplay (myDisplay);
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}
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#endif
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}
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#if !defined(_WIN32) && (!defined(__APPLE__) || defined(MACOSX_USE_GLX)) && !defined(__ANDROID__) && !defined(__QNX__) && !defined(__EMSCRIPTEN__)
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// =======================================================================
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// function : Aspect_DisplayConnection
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// purpose :
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// =======================================================================
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Aspect_DisplayConnection::Aspect_DisplayConnection (const TCollection_AsciiString& theDisplayName)
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: myDisplay (NULL),
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myIsOwnDisplay (false)
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{
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myDisplayName = theDisplayName;
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Init (NULL);
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}
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// =======================================================================
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// function : Aspect_DisplayConnection
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// purpose :
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// =======================================================================
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Aspect_DisplayConnection::Aspect_DisplayConnection (Display* theDisplay)
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: myDisplay (NULL),
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myIsOwnDisplay (false)
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{
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Init (theDisplay);
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}
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// =======================================================================
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// function : Init
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// purpose :
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// =======================================================================
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void Aspect_DisplayConnection::Init (Display* theDisplay)
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{
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if (myDisplay != NULL
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&& myIsOwnDisplay)
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{
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XCloseDisplay (myDisplay);
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}
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myIsOwnDisplay = false;
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myAtoms.Clear();
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myDisplay = theDisplay != NULL ? theDisplay : XOpenDisplay (myDisplayName.ToCString());
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if (myDisplay == NULL)
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{
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TCollection_AsciiString aMessage;
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aMessage += "Can not connect to the server \"";
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aMessage += myDisplayName + "\"";
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throw Aspect_DisplayConnectionDefinitionError(aMessage.ToCString());
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}
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else
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{
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myIsOwnDisplay = theDisplay == NULL;
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myAtoms.Bind (Aspect_XA_DELETE_WINDOW, XInternAtom(myDisplay, "WM_DELETE_WINDOW", False));
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}
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}
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// =======================================================================
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// function : GetAtom
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// purpose :
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// =======================================================================
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Atom Aspect_DisplayConnection::GetAtom (const Aspect_XAtom theAtom) const
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{
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Atom anAtom = myAtoms.Find(theAtom);
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return anAtom;
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}
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#endif
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