[529] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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[593] | 27 | // $Id: G4OpenGLXViewer.cc,v 1.42 2007/05/25 10:47:17 allison Exp $ |
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[850] | 28 | // GEANT4 tag $Name: HEAD $ |
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[529] | 29 | // |
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| 30 | // |
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| 31 | // Andrew Walkden 7th February 1997 |
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| 32 | // G4OpenGLXViewer : Class to provide XWindows specific |
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| 33 | // functionality for OpenGL in GEANT4 |
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| 34 | |
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| 35 | #ifdef G4VIS_BUILD_OPENGLX_DRIVER |
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| 36 | |
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| 37 | #include "G4OpenGLXViewer.hh" |
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| 38 | |
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| 39 | #include "G4OpenGLFontBaseStore.hh" |
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| 40 | |
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| 41 | #include <sstream> |
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| 42 | |
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| 43 | #include "G4VisExtent.hh" |
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| 44 | #include "G4LogicalVolume.hh" |
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| 45 | #include "G4VSolid.hh" |
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| 46 | #include "G4Point3D.hh" |
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| 47 | #include "G4Normal3D.hh" |
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| 48 | |
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| 49 | #include <X11/Xatom.h> |
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| 50 | #include <X11/Xutil.h> |
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| 51 | |
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| 52 | #include <assert.h> |
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| 53 | |
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| 54 | int G4OpenGLXViewer::snglBuf_RGBA[12] = |
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| 55 | { GLX_RGBA, |
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| 56 | GLX_RED_SIZE, 1, |
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| 57 | GLX_GREEN_SIZE, 1, |
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| 58 | GLX_BLUE_SIZE, 1, |
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| 59 | GLX_DEPTH_SIZE, 1, |
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| 60 | GLX_STENCIL_SIZE, 1, |
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| 61 | None }; |
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| 62 | |
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| 63 | int G4OpenGLXViewer::dblBuf_RGBA[13] = |
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| 64 | { GLX_RGBA, |
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| 65 | GLX_RED_SIZE, 1, |
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| 66 | GLX_GREEN_SIZE, 1, |
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| 67 | GLX_BLUE_SIZE, 1, |
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| 68 | GLX_DOUBLEBUFFER, |
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| 69 | GLX_DEPTH_SIZE, 1, |
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| 70 | GLX_STENCIL_SIZE, 1, |
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| 71 | None }; |
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| 72 | |
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| 73 | #define NewString(str) \ |
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| 74 | ((str) != NULL ? (strcpy((char*)malloc((unsigned)strlen(str) + 1), str)) : (char*)NULL) |
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| 75 | |
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| 76 | #define USE_DEFAULT_COLORMAP 1 |
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| 77 | #define USE_STANDARD_COLORMAP 0 |
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| 78 | |
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| 79 | XVisualInfo* G4OpenGLXViewer::vi_single_buffer = 0; |
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| 80 | XVisualInfo* G4OpenGLXViewer::vi_double_buffer = 0; |
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| 81 | |
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| 82 | extern "C" { |
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[593] | 83 | static Bool G4OpenGLXViewerWaitForNotify (Display*, XEvent* e, char* arg) { |
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[529] | 84 | return (e->type == MapNotify) && (e->xmap.window == (Window) arg); |
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| 85 | } |
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| 86 | } |
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| 87 | |
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| 88 | void G4OpenGLXViewer::SetView () { |
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| 89 | glXMakeCurrent (dpy, win, cx); |
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| 90 | G4OpenGLViewer::SetView (); |
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| 91 | } |
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| 92 | |
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| 93 | void G4OpenGLXViewer::ShowView () { |
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| 94 | glXWaitGL (); //Wait for effects of all previous OpenGL commands to |
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| 95 | //be propagated before progressing. |
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| 96 | glFlush (); |
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[593] | 97 | |
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| 98 | if (fVP.IsPicking()) { |
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| 99 | G4cout << |
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| 100 | "Window activated for picking (left-mouse), exit (middle-mouse)." |
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| 101 | << G4endl; |
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| 102 | while (true) { |
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| 103 | if (XPending(dpy)) { |
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| 104 | XNextEvent(dpy, &event); |
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| 105 | if (event.type == ButtonPress && event.xbutton.button == 1) { |
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| 106 | Pick(event.xbutton.x, event.xbutton.y); |
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| 107 | } |
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| 108 | else if (event.type == ButtonPress && event.xbutton.button == 2) break; |
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| 109 | } |
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| 110 | } |
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| 111 | } |
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[529] | 112 | } |
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| 113 | |
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| 114 | void G4OpenGLXViewer::GetXConnection () { |
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| 115 | // get a connection. |
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| 116 | dpy = XOpenDisplay (0); |
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| 117 | if (!dpy) { |
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| 118 | fViewId = -1; // This flags an error. |
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| 119 | G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't open display." << G4endl; |
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| 120 | return; |
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| 121 | } |
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| 122 | |
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| 123 | // make sure OpenGL is supported and installed properly. |
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| 124 | if (!glXQueryExtension (dpy, &errorBase, &eventBase)) { |
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| 125 | fViewId = -1; // This flags an error. |
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| 126 | G4cerr << "G4OpenGLViewer::G4OpenGLViewer X Server has no GLX extension." |
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| 127 | << G4endl; |
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| 128 | return; |
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| 129 | } |
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| 130 | |
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| 131 | } |
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| 132 | |
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| 133 | void G4OpenGLXViewer::CreateGLXContext (XVisualInfo* v) { |
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| 134 | |
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| 135 | vi = v; |
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| 136 | // get window's attributes |
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| 137 | if (!XGetWindowAttributes(dpy, XRootWindow (dpy, vi -> screen), &xwa)) { |
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| 138 | fViewId = -1; // This flags an error. |
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| 139 | G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't return window attributes" |
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| 140 | << G4endl; |
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| 141 | return; |
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| 142 | } |
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| 143 | |
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| 144 | // create a GLX context |
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| 145 | cx = glXCreateContext (dpy, vi, 0, true); |
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| 146 | if (!cx) { |
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| 147 | fViewId = -1; // This flags an error. |
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| 148 | G4cerr << "G4OpenGLViewer::G4OpenGLViewer couldn't create context." |
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| 149 | << G4endl; |
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| 150 | return; |
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| 151 | } |
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| 152 | |
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| 153 | // New stab at getting a colormap |
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| 154 | |
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| 155 | Status status; |
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| 156 | XStandardColormap *standardCmaps = XAllocStandardColormap (); |
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| 157 | int i, numCmaps; |
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| 158 | |
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| 159 | status = XmuLookupStandardColormap (dpy, |
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| 160 | vi -> screen, |
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| 161 | vi -> visualid, |
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| 162 | vi -> depth, |
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| 163 | XA_RGB_DEFAULT_MAP, |
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| 164 | False, |
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| 165 | True); |
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| 166 | |
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| 167 | if (status == 1) { |
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[593] | 168 | cmap = 0; |
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[529] | 169 | status = XGetRGBColormaps (dpy, |
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| 170 | XRootWindow (dpy, vi -> screen), |
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| 171 | &standardCmaps, |
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| 172 | &numCmaps, |
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| 173 | XA_RGB_DEFAULT_MAP); |
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| 174 | if (status == 1) |
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[593] | 175 | for (i = 0; i < numCmaps; i++) { |
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[529] | 176 | if (standardCmaps[i].visualid == vi -> visualid) { |
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| 177 | cmap = standardCmaps[i].colormap; |
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| 178 | XFree (standardCmaps); |
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[593] | 179 | break; |
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[529] | 180 | } |
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[593] | 181 | } |
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| 182 | if (!cmap) { |
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| 183 | fViewId = -1; // This flags an error. |
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| 184 | G4cerr << |
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| 185 | "G4OpenGLViewer::G4OpenGLViewer failed to allocate a standard colormap." |
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| 186 | << G4endl; |
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| 187 | return; |
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| 188 | } |
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[529] | 189 | G4cout << "Got standard cmap" << G4endl; |
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| 190 | } else { |
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| 191 | cmap = XCreateColormap (dpy, |
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| 192 | XRootWindow(dpy, vi -> screen), |
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| 193 | vi -> visual, |
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| 194 | AllocNone); |
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| 195 | G4cout << "Created own cmap" << G4endl; |
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| 196 | } |
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| 197 | |
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| 198 | if (!cmap) { |
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| 199 | fViewId = -1; // This flags an error. |
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| 200 | G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to allocate a Colormap." |
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| 201 | << G4endl; |
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| 202 | return; |
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| 203 | } |
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| 204 | |
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| 205 | } |
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| 206 | |
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| 207 | void G4OpenGLXViewer::CreateMainWindow () { |
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| 208 | |
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| 209 | // create a window |
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| 210 | swa.colormap = cmap; |
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| 211 | swa.border_pixel = 0; |
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| 212 | swa.event_mask = ExposureMask | ButtonPressMask | StructureNotifyMask; |
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| 213 | swa.backing_store = WhenMapped; |
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| 214 | |
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| 215 | // Window size and position... |
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[897] | 216 | G4int x_origin = 0; |
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| 217 | G4int y_origin = 0; |
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[529] | 218 | size_hints = XAllocSizeHints(); |
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[891] | 219 | |
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[896] | 220 | Window root_return; |
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| 221 | int x_return, y_return; |
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| 222 | unsigned int width_return, height_return; |
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| 223 | unsigned int border_width_return; |
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| 224 | unsigned int depth_return; |
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| 225 | |
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| 226 | // get the parent window's geometry |
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| 227 | XGetGeometry(dpy, XRootWindow (dpy, vi -> screen), &root_return, &x_return, &y_return, |
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| 228 | &width_return, &height_return, &border_width_return, |
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| 229 | &depth_return); |
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| 230 | |
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[897] | 231 | fWinSize_x = fVP.GetWindowSizeHintX(); |
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| 232 | fWinSize_y = fVP.GetWindowSizeHintY(); |
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[896] | 233 | x_origin = fVP.GetWindowAbsoluteLocationHintX(width_return); |
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| 234 | y_origin = fVP.GetWindowAbsoluteLocationHintY(height_return); |
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[897] | 235 | size_hints->base_width = fWinSize_x; |
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| 236 | size_hints->base_height = fWinSize_y; |
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[896] | 237 | size_hints->x = x_origin; |
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| 238 | size_hints->y = y_origin; |
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| 239 | size_hints->flags |= PSize | PPosition; |
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[893] | 240 | #ifdef G4DEBUG |
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[897] | 241 | printf("G4OpenGLXViewer::CreateMainWindow CreateWindow Size:W:%d H:%d X:%d Y:%d \n",fWinSize_x,fWinSize_y,x_origin,y_origin); |
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[893] | 242 | #endif |
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| 243 | |
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[529] | 244 | G4cout << "Window name: " << fName << G4endl; |
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| 245 | strncpy (charViewName, fName, 100); |
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| 246 | char *window_name = charViewName; |
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| 247 | char *icon_name = charViewName; |
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| 248 | //char tmpatom[] = "XA_WM_NORMAL_HINTS"; |
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| 249 | wm_hints = XAllocWMHints(); |
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| 250 | class_hints = XAllocClassHint(); |
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| 251 | |
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| 252 | XStringListToTextProperty (&window_name, 1, &windowName); |
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| 253 | XStringListToTextProperty (&icon_name, 1, &iconName); |
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| 254 | |
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| 255 | wm_hints -> initial_state = NormalState; |
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| 256 | wm_hints -> input = True; |
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| 257 | wm_hints -> icon_pixmap = icon_pixmap; |
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| 258 | wm_hints -> flags = StateHint | IconPixmapHint | InputHint; |
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| 259 | |
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| 260 | class_hints -> res_name = NewString("G4OpenGL"); |
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| 261 | class_hints -> res_class = NewString("G4OpenGL"); |
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| 262 | |
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[896] | 263 | win = XCreateWindow (dpy, XRootWindow (dpy, vi -> screen), x_origin, |
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[897] | 264 | y_origin, fWinSize_x, fWinSize_y, 0, vi -> depth, |
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[896] | 265 | InputOutput, vi -> visual, |
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| 266 | CWBorderPixel | CWColormap | |
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| 267 | CWEventMask | CWBackingStore, |
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| 268 | &swa); |
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[529] | 269 | |
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[896] | 270 | XSetWMProperties (dpy, win, &windowName, &iconName, 0, 0, |
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| 271 | size_hints, wm_hints, class_hints); |
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[529] | 272 | |
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| 273 | // request X to Draw window on screen. |
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| 274 | XMapWindow (dpy, win); |
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| 275 | |
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| 276 | // Wait for window to appear (wait for an "expose" event). |
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| 277 | XIfEvent (dpy, &event, G4OpenGLXViewerWaitForNotify, (char*) win); |
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| 278 | |
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| 279 | // connect the context to a window |
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[593] | 280 | Bool success = glXMakeCurrent (dpy, win, cx); |
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| 281 | if (!success) { |
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| 282 | fViewId = -1; // This flags an error. |
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| 283 | G4cerr << "G4OpenGLViewer::G4OpenGLViewer failed to attach a GLX context." |
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| 284 | << G4endl; |
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| 285 | GLint error = GL_NO_ERROR; |
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| 286 | while ((error = glGetError()) != GL_NO_ERROR) { |
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| 287 | G4cout << "GL Error: " << gluErrorString(error) << G4endl; |
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| 288 | } |
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| 289 | return; |
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| 290 | } |
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[529] | 291 | |
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| 292 | } |
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| 293 | |
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| 294 | void G4OpenGLXViewer::CreateFontLists () { |
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| 295 | |
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| 296 | std::map<G4double,G4String> fonts; // G4VMarker screen size and font name. |
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| 297 | fonts[10.] = "-adobe-courier-bold-r-normal--10-100-75-75-m-60-iso8859-1"; |
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| 298 | fonts[11.] = "-adobe-courier-bold-r-normal--11-80-100-100-m-60-iso8859-1"; |
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| 299 | fonts[12.] = "-adobe-courier-bold-r-normal--12-120-75-75-m-70-iso8859-1"; |
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| 300 | fonts[13.] = "fixed"; |
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| 301 | fonts[14.] = "-adobe-courier-bold-r-normal--14-100-100-100-m-90-iso8859-1"; |
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| 302 | fonts[17.] = "-adobe-courier-bold-r-normal--17-120-100-100-m-100-iso8859-1"; |
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| 303 | fonts[18.] = "-adobe-courier-bold-r-normal--18-180-75-75-m-110-iso8859-1"; |
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| 304 | fonts[20.] = "-adobe-courier-bold-r-normal--20-140-100-100-m-110-iso8859-1"; |
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| 305 | fonts[24.] = "-adobe-courier-bold-r-normal--24-240-75-75-m-150-iso8859-1"; |
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| 306 | fonts[25.] = "-adobe-courier-bold-r-normal--25-180-100-100-m-150-iso8859-1"; |
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| 307 | fonts[34.] = "-adobe-courier-bold-r-normal--34-240-100-100-m-200-iso8859-1"; |
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| 308 | std::map<G4double,G4String>::const_iterator i; |
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| 309 | for (i = fonts.begin(); i != fonts.end(); ++i) { |
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| 310 | XFontStruct* font_info = XLoadQueryFont(dpy, i->second); |
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| 311 | if (!font_info) { |
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| 312 | G4cerr << |
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| 313 | "G4OpenGLXViewer: XLoadQueryFont failed for font\n " |
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| 314 | << i->second |
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| 315 | << G4endl; |
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| 316 | continue; |
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| 317 | } |
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| 318 | G4int font_base = glGenLists(256); |
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| 319 | if (!font_base) { |
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| 320 | G4cerr << "G4OpenGLXViewer: out of display lists for fonts." |
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| 321 | << G4endl; |
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| 322 | continue; |
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| 323 | } |
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| 324 | G4int first = font_info->min_char_or_byte2; |
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| 325 | G4int last = font_info->max_char_or_byte2; |
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| 326 | glXUseXFont(font_info->fid, first, last-first+1,font_base+first); |
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| 327 | G4OpenGLFontBaseStore::AddFontBase(this,font_base,i->first,i->second); |
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| 328 | } |
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| 329 | } |
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| 330 | |
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| 331 | G4OpenGLXViewer::G4OpenGLXViewer (G4OpenGLSceneHandler& scene): |
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| 332 | G4VViewer (scene, -1), |
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| 333 | G4OpenGLViewer (scene), |
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| 334 | vi_immediate (0), |
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[593] | 335 | vi_stored (0), |
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| 336 | vi (0), |
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| 337 | cmap (0) |
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[529] | 338 | { |
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| 339 | GetXConnection (); |
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| 340 | if (fViewId < 0) return; |
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| 341 | |
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| 342 | // Try for a visual suitable for OpenGLImmediate.. |
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| 343 | // first try for a single buffered RGB window |
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| 344 | if (!vi_single_buffer) { |
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| 345 | vi_single_buffer = |
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| 346 | glXChooseVisual (dpy, XDefaultScreen (dpy), snglBuf_RGBA); |
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| 347 | } |
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| 348 | if (!vi_double_buffer) { |
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| 349 | vi_double_buffer = |
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| 350 | glXChooseVisual (dpy, XDefaultScreen (dpy), dblBuf_RGBA); |
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| 351 | } |
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| 352 | |
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| 353 | if (vi_single_buffer || vi_double_buffer) { |
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| 354 | if (!vi_double_buffer) { |
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| 355 | G4cout << |
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| 356 | "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual." |
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| 357 | "\n Working with a single buffer." |
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| 358 | << G4endl; |
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| 359 | } |
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| 360 | } else { |
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| 361 | if (!vi_single_buffer) { |
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| 362 | G4cout << |
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| 363 | "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a single buffer visual." |
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| 364 | << G4endl; |
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| 365 | } |
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| 366 | if (!vi_double_buffer) { |
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| 367 | G4cout << |
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| 368 | "G4OpenGLXViewer::G4OpenGLXViewer: unable to get a double buffer visual." |
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| 369 | << G4endl; |
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| 370 | } |
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| 371 | } |
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| 372 | |
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| 373 | if (vi_single_buffer) { |
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| 374 | vi_immediate = vi_single_buffer; |
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| 375 | attributeList = snglBuf_RGBA; |
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| 376 | } |
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| 377 | |
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| 378 | if (!vi_immediate){ |
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| 379 | // next try for a double buffered RGB, but Draw to top buffer |
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| 380 | if (vi_double_buffer) { |
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| 381 | vi_immediate = vi_double_buffer; |
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| 382 | attributeList = dblBuf_RGBA; |
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| 383 | } |
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| 384 | } |
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| 385 | |
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| 386 | // Now try for a visual suitable for OpenGLStored... |
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| 387 | // Try for a double buffered RGB window |
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| 388 | if (vi_double_buffer) { |
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| 389 | vi_stored = vi_double_buffer; |
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| 390 | attributeList = dblBuf_RGBA; |
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| 391 | } |
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| 392 | |
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| 393 | if (!vi_immediate || !vi_stored) { |
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| 394 | G4cout << |
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| 395 | "G4OpenGLXViewer::G4OpenGLXViewer: unable to get required visuals." |
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| 396 | << G4endl; |
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| 397 | fViewId = -1; // This flags an error. |
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| 398 | } |
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| 399 | |
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| 400 | // glClearColor (0., 0., 0., 0.); |
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| 401 | // glClearDepth (1.); |
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| 402 | } |
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| 403 | |
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| 404 | G4OpenGLXViewer::~G4OpenGLXViewer () { |
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| 405 | if (fViewId >= 0) { |
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| 406 | //Close a window from here |
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| 407 | glXMakeCurrent (dpy, None, NULL); |
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| 408 | glXDestroyContext (dpy, cx); |
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| 409 | if (win) XDestroyWindow (dpy, win); // ...if already deleted in |
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| 410 | // sub-class G4OpenGLXmViewer. |
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| 411 | XFlush (dpy); |
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| 412 | } |
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| 413 | } |
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| 414 | |
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| 415 | void G4OpenGLXViewer::print() { |
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| 416 | |
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| 417 | //using namespace std; |
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| 418 | //cout << "print_col_callback requested with file name: " << print_string << G4endl; |
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| 419 | |
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| 420 | if (vectored_ps) { |
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| 421 | |
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[593] | 422 | G4OpenGLViewer::print(); |
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| 423 | |
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[529] | 424 | } else { |
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| 425 | |
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| 426 | XVisualInfo* pvi; |
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| 427 | GLXContext pcx = create_GL_print_context(pvi); |
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[593] | 428 | |
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| 429 | if (!pcx) { |
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| 430 | G4cout << "Unable to create print context." << G4endl; |
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| 431 | return; |
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| 432 | } |
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| 433 | |
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[529] | 434 | GLXContext tmp_cx; |
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| 435 | tmp_cx = cx; |
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| 436 | cx=pcx; |
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| 437 | |
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| 438 | Pixmap pmap = XCreatePixmap (dpy, |
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| 439 | XRootWindow (dpy, pvi->screen), |
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[897] | 440 | fWinSize_x, fWinSize_y, |
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[529] | 441 | pvi->depth); |
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| 442 | |
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| 443 | GLXPixmap glxpmap = glXCreateGLXPixmap (dpy, |
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| 444 | pvi, |
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| 445 | pmap); |
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| 446 | |
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| 447 | GLXDrawable tmp_win; |
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| 448 | tmp_win=win; |
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| 449 | win=glxpmap; |
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| 450 | |
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| 451 | glXMakeCurrent (dpy, |
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[593] | 452 | win, |
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[529] | 453 | cx); |
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| 454 | |
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[897] | 455 | glViewport (0, 0, fWinSize_x, fWinSize_y); |
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[529] | 456 | |
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| 457 | ClearView (); |
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[593] | 458 | SetView (); |
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[529] | 459 | DrawView (); |
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| 460 | |
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| 461 | generateEPS (print_string, |
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| 462 | print_colour, |
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[897] | 463 | fWinSize_x, fWinSize_y); |
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[529] | 464 | |
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| 465 | win=tmp_win; |
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| 466 | cx=tmp_cx; |
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| 467 | |
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| 468 | glXMakeCurrent (dpy, |
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[593] | 469 | win, |
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[529] | 470 | cx); |
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| 471 | |
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| 472 | } |
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| 473 | |
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| 474 | } |
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| 475 | |
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[593] | 476 | GLubyte* G4OpenGLXViewer::grabPixels (int inColor, unsigned int width, unsigned int height) { |
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| 477 | |
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| 478 | GLubyte* buffer; |
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| 479 | GLint swapbytes, lsbfirst, rowlength; |
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| 480 | GLint skiprows, skippixels, alignment; |
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| 481 | GLenum format; |
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| 482 | int size; |
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[529] | 483 | |
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[593] | 484 | if (inColor) { |
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| 485 | format = GL_RGB; |
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| 486 | size = width*height*3; |
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| 487 | } else { |
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| 488 | format = GL_LUMINANCE; |
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| 489 | size = width*height*1; |
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[529] | 490 | } |
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| 491 | |
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[593] | 492 | buffer = new GLubyte[size]; |
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| 493 | if (buffer == NULL) |
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| 494 | return NULL; |
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[529] | 495 | |
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[593] | 496 | glGetIntegerv (GL_UNPACK_SWAP_BYTES, &swapbytes); |
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| 497 | glGetIntegerv (GL_UNPACK_LSB_FIRST, &lsbfirst); |
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| 498 | glGetIntegerv (GL_UNPACK_ROW_LENGTH, &rowlength); |
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[529] | 499 | |
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[593] | 500 | glGetIntegerv (GL_UNPACK_SKIP_ROWS, &skiprows); |
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| 501 | glGetIntegerv (GL_UNPACK_SKIP_PIXELS, &skippixels); |
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| 502 | glGetIntegerv (GL_UNPACK_ALIGNMENT, &alignment); |
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[529] | 503 | |
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[593] | 504 | glPixelStorei (GL_UNPACK_SWAP_BYTES, GL_FALSE); |
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| 505 | glPixelStorei (GL_UNPACK_LSB_FIRST, GL_FALSE); |
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| 506 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
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[529] | 507 | |
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[593] | 508 | glPixelStorei (GL_UNPACK_SKIP_ROWS, 0); |
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| 509 | glPixelStorei (GL_UNPACK_SKIP_PIXELS, 0); |
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| 510 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
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[529] | 511 | |
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[593] | 512 | glReadPixels (0, 0, (GLsizei)width, (GLsizei)height, format, GL_UNSIGNED_BYTE, (GLvoid*) buffer); |
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[529] | 513 | |
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[593] | 514 | glPixelStorei (GL_UNPACK_SWAP_BYTES, swapbytes); |
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| 515 | glPixelStorei (GL_UNPACK_LSB_FIRST, lsbfirst); |
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| 516 | glPixelStorei (GL_UNPACK_ROW_LENGTH, rowlength); |
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[529] | 517 | |
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[593] | 518 | glPixelStorei (GL_UNPACK_SKIP_ROWS, skiprows); |
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| 519 | glPixelStorei (GL_UNPACK_SKIP_PIXELS, skippixels); |
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| 520 | glPixelStorei (GL_UNPACK_ALIGNMENT, alignment); |
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[529] | 521 | |
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[593] | 522 | return buffer; |
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[529] | 523 | } |
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| 524 | |
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| 525 | int G4OpenGLXViewer::generateEPS (char* filnam, |
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| 526 | int inColour, |
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| 527 | unsigned int width, |
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| 528 | unsigned int height) { |
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| 529 | |
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| 530 | FILE* fp; |
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| 531 | GLubyte* pixels; |
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| 532 | GLubyte* curpix; |
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| 533 | int components, pos, i; |
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| 534 | |
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| 535 | pixels = grabPixels (inColour, width, height); |
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| 536 | |
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| 537 | if (pixels == NULL) |
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| 538 | return 1; |
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| 539 | if (inColour) { |
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| 540 | components = 3; |
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| 541 | } else { |
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| 542 | components = 1; |
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| 543 | } |
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| 544 | |
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| 545 | fp = fopen (filnam, "w"); |
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| 546 | if (fp == NULL) { |
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| 547 | return 2; |
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| 548 | } |
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| 549 | |
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| 550 | fprintf (fp, "%%!PS-Adobe-2.0 EPSF-1.2\n"); |
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| 551 | fprintf (fp, "%%%%Title: %s\n", filnam); |
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| 552 | fprintf (fp, "%%%%Creator: OpenGL pixmap render output\n"); |
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| 553 | fprintf (fp, "%%%%BoundingBox: 0 0 %d %d\n", width, height); |
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| 554 | fprintf (fp, "%%%%EndComments\n"); |
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| 555 | fprintf (fp, "gsave\n"); |
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| 556 | fprintf (fp, "/bwproc {\n"); |
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| 557 | fprintf (fp, " rgbproc\n"); |
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| 558 | fprintf (fp, " dup length 3 idiv string 0 3 0 \n"); |
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| 559 | fprintf (fp, " 5 -1 roll {\n"); |
---|
| 560 | fprintf (fp, " add 2 1 roll 1 sub dup 0 eq\n"); |
---|
| 561 | fprintf (fp, " { pop 3 idiv 3 -1 roll dup 4 -1 roll dup\n"); |
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| 562 | fprintf (fp, " 3 1 roll 5 -1 roll } put 1 add 3 0 \n"); |
---|
| 563 | fprintf (fp, " { 2 1 roll } ifelse\n"); |
---|
| 564 | fprintf (fp, " }forall\n"); |
---|
| 565 | fprintf (fp, " pop pop pop\n"); |
---|
| 566 | fprintf (fp, "} def\n"); |
---|
| 567 | fprintf (fp, "systemdict /colorimage known not {\n"); |
---|
| 568 | fprintf (fp, " /colorimage {\n"); |
---|
| 569 | fprintf (fp, " pop\n"); |
---|
| 570 | fprintf (fp, " pop\n"); |
---|
| 571 | fprintf (fp, " /rgbproc exch def\n"); |
---|
| 572 | fprintf (fp, " { bwproc } image\n"); |
---|
| 573 | fprintf (fp, " } def\n"); |
---|
| 574 | fprintf (fp, "} if\n"); |
---|
| 575 | fprintf (fp, "/picstr %d string def\n", width * components); |
---|
| 576 | fprintf (fp, "%d %d scale\n", width, height); |
---|
| 577 | fprintf (fp, "%d %d %d\n", width, height, 8); |
---|
| 578 | fprintf (fp, "[%d 0 0 %d 0 0]\n", width, height); |
---|
| 579 | fprintf (fp, "{currentfile picstr readhexstring pop}\n"); |
---|
| 580 | fprintf (fp, "false %d\n", components); |
---|
| 581 | fprintf (fp, "colorimage\n"); |
---|
| 582 | |
---|
| 583 | curpix = (GLubyte*) pixels; |
---|
| 584 | pos = 0; |
---|
| 585 | for (i = width*height*components; i>0; i--) { |
---|
| 586 | fprintf (fp, "%02hx ", *(curpix++)); |
---|
| 587 | if (++pos >= 32) { |
---|
| 588 | fprintf (fp, "\n"); |
---|
| 589 | pos = 0; |
---|
| 590 | } |
---|
| 591 | } |
---|
| 592 | if (pos) |
---|
| 593 | fprintf (fp, "\n"); |
---|
| 594 | |
---|
| 595 | fprintf (fp, "grestore\n"); |
---|
| 596 | fprintf (fp, "showpage\n"); |
---|
| 597 | delete pixels; |
---|
| 598 | fclose (fp); |
---|
| 599 | return 0; |
---|
| 600 | } |
---|
| 601 | |
---|
[593] | 602 | GLXContext G4OpenGLXViewer::create_GL_print_context(XVisualInfo*& pvi) { |
---|
[529] | 603 | |
---|
[593] | 604 | pvi = glXChooseVisual (dpy, |
---|
| 605 | XDefaultScreen (dpy), |
---|
| 606 | snglBuf_RGBA); |
---|
[529] | 607 | |
---|
[593] | 608 | if (!pvi) { |
---|
| 609 | pvi = glXChooseVisual (dpy, |
---|
| 610 | XDefaultScreen (dpy), |
---|
| 611 | dblBuf_RGBA); |
---|
[529] | 612 | } |
---|
| 613 | |
---|
[593] | 614 | return glXCreateContext (dpy, |
---|
| 615 | pvi, |
---|
| 616 | NULL, |
---|
| 617 | False); |
---|
[529] | 618 | } |
---|
| 619 | |
---|
| 620 | #endif |
---|