1 // Created on: 2011-09-20
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2012 OPEN CASCADE SAS
5 // The content of this file is subject to the Open CASCADE Technology Public
6 // License Version 6.5 (the "License"). You may not use the content of this file
7 // except in compliance with the License. Please obtain a copy of the License
8 // at http://www.opencascade.org and read it completely before using this file.
10 // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
11 // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
13 // The Original Code and all software distributed under the License is
14 // distributed on an "AS IS" basis, without warranty of any kind, and the
15 // Initial Developer hereby disclaims all such warranties, including without
16 // limitation, any warranties of merchantability, fitness for a particular
17 // purpose or non-infringement. Please see the License for the specific terms
18 // and conditions governing the rights and limitations under the License.
20 #include <OpenGl_GlCore11.hxx>
22 #if (defined(_WIN32) || defined(__WIN32__)) && defined(HAVE_VIDEOCAPTURE)
23 #include <OpenGl_AVIWriter.hxx>
26 #include <OpenGl_FrameBuffer.hxx>
27 #include <InterfaceGraphic_Graphic3d.hxx>
28 #include <InterfaceGraphic_Visual3d.hxx>
30 #include <OpenGl_Workspace.hxx>
33 void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
34 const Aspect_CLayer2d& theCUnderLayer,
35 const Aspect_CLayer2d& theCOverLayer)
40 // release pending GL resources
41 Handle(OpenGl_Context) aGlCtx = GetGlContext();
42 aGlCtx->ReleaseDelayed();
44 // cache render mode state
45 GLint aRendMode = GL_RENDER;
46 glGetIntegerv (GL_RENDER_MODE, &aRendMode);
47 aGlCtx->SetFeedback (aRendMode == GL_FEEDBACK);
49 Tint toSwap = (aRendMode == GL_RENDER); // swap buffers
50 GLint aViewPortBack[4];
51 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
52 if (aFrameBuffer != NULL)
54 glGetIntegerv (GL_VIEWPORT, aViewPortBack);
55 aFrameBuffer->SetupViewport();
56 aFrameBuffer->BindBuffer (aGlCtx);
57 toSwap = 0; // no need to swap buffers
60 Redraw1 (theCView, theCUnderLayer, theCOverLayer, toSwap);
63 if (aFrameBuffer != NULL)
65 aFrameBuffer->UnbindBuffer (aGlCtx);
66 // move back original viewport
67 glViewport (aViewPortBack[0], aViewPortBack[1], aViewPortBack[2], aViewPortBack[3]);
70 #if (defined(_WIN32) || defined(__WIN32__)) && defined(HAVE_VIDEOCAPTURE)
71 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
74 glGetIntegerv (GL_VIEWPORT, params);
75 int nWidth = params[2] & ~0x7;
76 int nHeight = params[3] & ~0x7;
78 const int nBitsPerPixel = 24;
79 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
81 glPixelStorei (GL_PACK_ALIGNMENT, 1);
82 glReadPixels (0, 0, nWidth, nHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, aDumpData);
83 OpenGl_AVIWriter_AVIWriter (aDumpData, nWidth, nHeight, nBitsPerPixel);
88 // reset render mode state
89 aGlCtx->SetFeedback (Standard_False);