0023525: Disappearing of highlight in screenshot
[occt.git] / src / OpenGl / OpenGl_Workspace_4.cxx
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b311480e 1// Created on: 2011-09-20
2// Created by: Sergey ZERCHANINOV
3// Copyright (c) 2011-2012 OPEN CASCADE SAS
4//
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.
9//
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.
12//
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.
19
5f8b738e 20#include <OpenGl_GlCore11.hxx>
21
16fa0dfb 22#if (defined(_WIN32) || defined(__WIN32__)) && defined(HAVE_VIDEOCAPTURE)
2166f0fa 23 #include <OpenGl_AVIWriter.hxx>
2166f0fa 24#endif
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25
26#include <OpenGl_FrameBuffer.hxx>
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27#include <InterfaceGraphic_Graphic3d.hxx>
28#include <InterfaceGraphic_Visual3d.hxx>
29
30#include <OpenGl_Workspace.hxx>
31
32//call_togl_redraw
33void OpenGl_Workspace::Redraw (const Graphic3d_CView& theCView,
34 const Aspect_CLayer2d& theCUnderLayer,
35 const Aspect_CLayer2d& theCOverLayer)
36{
37 if (!Activate())
38 return;
39
40 // release pending GL resources
664cae74 41 Handle(OpenGl_Context) aGlCtx = GetGlContext();
5e27df78 42 aGlCtx->ReleaseDelayed();
2166f0fa 43
664cae74 44 // cache render mode state
45 GLint aRendMode = GL_RENDER;
1981cb22 46 glGetIntegerv (GL_RENDER_MODE, &aRendMode);
664cae74 47 aGlCtx->SetFeedback (aRendMode == GL_FEEDBACK);
48
49 Tint toSwap = (aRendMode == GL_RENDER); // swap buffers
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50 GLint aViewPortBack[4];
51 OpenGl_FrameBuffer* aFrameBuffer = (OpenGl_FrameBuffer* )theCView.ptrFBO;
52 if (aFrameBuffer != NULL)
53 {
54 glGetIntegerv (GL_VIEWPORT, aViewPortBack);
55 aFrameBuffer->SetupViewport();
664cae74 56 aFrameBuffer->BindBuffer (aGlCtx);
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57 toSwap = 0; // no need to swap buffers
58 }
59
60 Redraw1 (theCView, theCUnderLayer, theCOverLayer, toSwap);
1981cb22 61 if (aFrameBuffer == NULL || !myTransientDrawToFront)
62 {
63 RedrawImmediatMode();
64 }
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65
66 if (aFrameBuffer != NULL)
67 {
664cae74 68 aFrameBuffer->UnbindBuffer (aGlCtx);
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69 // move back original viewport
70 glViewport (aViewPortBack[0], aViewPortBack[1], aViewPortBack[2], aViewPortBack[3]);
71 }
72
16fa0dfb 73#if (defined(_WIN32) || defined(__WIN32__)) && defined(HAVE_VIDEOCAPTURE)
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74 if (OpenGl_AVIWriter_AllowWriting (theCView.DefWindow.XWindow))
75 {
76 GLint params[4];
77 glGetIntegerv (GL_VIEWPORT, params);
78 int nWidth = params[2] & ~0x7;
79 int nHeight = params[3] & ~0x7;
80
81 const int nBitsPerPixel = 24;
82 GLubyte* aDumpData = new GLubyte[nWidth * nHeight * nBitsPerPixel / 8];
83
84 glPixelStorei (GL_PACK_ALIGNMENT, 1);
85 glReadPixels (0, 0, nWidth, nHeight, GL_BGR_EXT, GL_UNSIGNED_BYTE, aDumpData);
86 OpenGl_AVIWriter_AVIWriter (aDumpData, nWidth, nHeight, nBitsPerPixel);
87 delete[] aDumpData;
88 }
89#endif
664cae74 90
91 // reset render mode state
92 aGlCtx->SetFeedback (Standard_False);
2166f0fa 93}