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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents 04928add86e6
children
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 *
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11 * Port to the D programming language:
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12 * Jacob Carlborg <doob@me.com>
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13 *******************************************************************************/
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14 module dwt.opengl.GLCanvas;
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16 import dwt.dwthelper.utils;
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17
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18 import dwt.DWT;
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19 import dwt.DWTException;
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20 import dwt.internal.cocoa.NSOpenGLContext;
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21 import dwt.internal.cocoa.NSOpenGLPixelFormat;
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22 import dwt.internal.cocoa.NSOpenGLView;
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23 import dwt.internal.cocoa.OS;
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24 import dwt.widgets.Canvas;
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25 import dwt.widgets.Composite;
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26 import dwt.widgets.Event;
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27 import dwt.widgets.Listener;
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29 import dwt.internal.objc.cocoa.Cocoa;
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30 import dwt.opengl.GLData;
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31
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32 /**
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33 * GLCanvas is a widget capable of displaying OpenGL content.
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34 *
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35 * @see GLData
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36 * @see <a href="http://www.eclipse.org/swt/snippets/#opengl">OpenGL snippets</a>
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37 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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38 *
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39 * @since 3.2
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40 */
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41
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42 public class GLCanvas : Canvas {
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43 NSOpenGLView glView;
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44 NSOpenGLPixelFormat pixelFormat;
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45 static const int MAX_ATTRIBUTES = 32;
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46
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47 /**
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48 * Create a GLCanvas widget using the attributes described in the GLData
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49 * object provided.
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50 *
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51 * @param parent a composite widget
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52 * @param style the bitwise OR'ing of widget styles
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53 * @param data the requested attributes of the GLCanvas
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54 *
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55 * @exception IllegalArgumentException
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56 * <ul><li>ERROR_NULL_ARGUMENT when the data is null
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57 * <li>ERROR_UNSUPPORTED_DEPTH when the requested attributes cannot be provided</ul>
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58 * </ul>
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59 */
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60 public this (Composite parent, int style, GLData data) {
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61 super (parent, style);
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62 if (data is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
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63 int attrib [] = new int [MAX_ATTRIBUTES];
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64 int pos = 0;
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65 //TODO use color options
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66 // attrib [pos++] = OS.AGL_RGBA;
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67 if (data.doubleBuffer) attrib [pos++] = OS.NSOpenGLPFADoubleBuffer;
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68 if (data.stereo) attrib [pos++] = OS.NSOpenGLPFAStereo;
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69 // if (data.redSize > 0) {
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70 // attrib [pos++] = OS.AGL_RED_SIZE;
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71 // attrib [pos++] = data.redSize;
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72 // }
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73 // if (data.greenSize > 0) {
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74 // attrib [pos++] = OS.AGL_GREEN_SIZE;
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75 // attrib [pos++] = data.greenSize;
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76 // }
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77 // if (data.blueSize > 0) {
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78 // attrib [pos++] = OS.AGL_BLUE_SIZE;
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79 // attrib [pos++] = data.blueSize;
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80 // }
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81 if (data.alphaSize > 0) {
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82 attrib [pos++] = OS.NSOpenGLPFAAlphaSize;
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83 attrib [pos++] = data.alphaSize;
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84 }
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85 if (data.depthSize > 0) {
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86 attrib [pos++] = OS.NSOpenGLPFADepthSize;
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87 attrib [pos++] = data.depthSize;
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88 }
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89 if (data.stencilSize > 0) {
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90 attrib [pos++] = OS.NSOpenGLPFAStencilSize;
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91 attrib [pos++] = data.stencilSize;
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92 }
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93 // if (data.accumRedSize > 0) {
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94 // attrib [pos++] = OS.AGL_ACCUM_RED_SIZE;
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95 // attrib [pos++] = data.accumRedSize;
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96 // }
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97 // if (data.accumGreenSize > 0) {
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98 // attrib [pos++] = OS.AGL_ACCUM_GREEN_SIZE;
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99 // attrib [pos++] = data.accumGreenSize;
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100 // }
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101 // if (data.accumBlueSize > 0) {
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102 // attrib [pos++] = OS.AGL_ACCUM_BLUE_SIZE;
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103 // attrib [pos++] = data.accumBlueSize;
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104 // }
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105 // if (data.accumAlphaSize > 0) {
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106 // attrib [pos++] = OS.AGL_ACCUM_ALPHA_SIZE;
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107 // attrib [pos++] = data.accumAlphaSize;
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108 // }
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109 if (data.sampleBuffers > 0) {
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110 attrib [pos++] = OS.NSOpenGLPFASampleBuffers;
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111 attrib [pos++] = data.sampleBuffers;
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112 }
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113 if (data.samples > 0) {
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114 attrib [pos++] = OS.NSOpenGLPFASamples;
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115 attrib [pos++] = data.samples;
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116 }
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117 attrib [pos++] = 0;
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118 pixelFormat = cast(NSOpenGLPixelFormat)(new NSOpenGLPixelFormat()).alloc();
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119 if (pixelFormat is null) {
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120 dispose ();
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121 DWT.error (DWT.ERROR_UNSUPPORTED_DEPTH);
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122 }
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123 pixelFormat.initWithAttributes((cast(NSOpenGLPixelFormatAttribute[])attrib).ptr);
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124
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125 glView = cast(NSOpenGLView)(new NSOpenGLView()).alloc();
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126 if (glView is null) {
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127 dispose ();
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128 DWT.error (DWT.ERROR_UNSUPPORTED_DEPTH);
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129 }
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130 glView.initWithFrame(parent.view.bounds(), pixelFormat);
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131 glView.setAutoresizingMask(OS.NSViewWidthSizable | OS.NSViewHeightSizable);
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132 parent.view.addSubview(glView);
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133
135
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134 Listener listener = new class (glView, pixelFormat) Listener {
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135 NSOpenGLView glView;
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136 NSOpenGLPixelFormat pixelFormat;
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137
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138 this (NSOpenGLView glView, NSOpenGLPixelFormat pixelFormat)
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139 {
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140 this.glView = glView;
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141 this.pixelFormat = pixelFormat;
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142 }
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143
0
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144 public void handleEvent (Event event) {
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145 switch (event.type) {
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146 case DWT.Dispose:
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147 if (glView !is null) {
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148 glView.clearGLContext();
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149 glView.release();
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150 }
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151 glView = null;
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152 if (pixelFormat !is null) pixelFormat.release();
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153 pixelFormat = null;
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154 break;
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155 default:
0
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156 }
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157 }
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158 };
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159 addListener (DWT.Dispose, listener);
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160 }
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161
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162 /**
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163 * Returns a GLData object describing the created context.
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164 *
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165 * @return GLData description of the OpenGL context attributes
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166 * @exception DWTException <ul>
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167 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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168 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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169 * </ul>
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170 */
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171 public GLData getGLData () {
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172 checkWidget ();
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173 GLData data = new GLData ();
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174 int [] value = new int [1];
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175 //TODO implement getGLData()
0
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176 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_DOUBLEBUFFER, value);
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177 // data.doubleBuffer = value [0] !is 0;
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178 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_STEREO, value);
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179 // data.stereo = value [0] !is 0;
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180 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_RED_SIZE, value);
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181 // data.redSize = value [0];
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182 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_GREEN_SIZE, value);
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183 // data.greenSize = value [0];
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184 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_BLUE_SIZE, value);
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185 // data.blueSize = value [0];
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186 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ALPHA_SIZE, value);
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187 // data.alphaSize = value [0];
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188 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_DEPTH_SIZE, value);
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189 // data.depthSize = value [0];
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190 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_STENCIL_SIZE, value);
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191 // data.stencilSize = value [0];
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192 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_RED_SIZE, value);
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193 // data.accumRedSize = value [0];
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194 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_GREEN_SIZE, value);
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195 // data.accumGreenSize = value [0];
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196 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_BLUE_SIZE, value);
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197 // data.accumBlueSize = value [0];
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198 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_ALPHA_SIZE, value);
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199 // data.accumAlphaSize = value [0];
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200 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_SAMPLE_BUFFERS_ARB, value);
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201 // data.sampleBuffers = value [0];
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202 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_SAMPLES_ARB, value);
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203 data.samples = value [0];
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204 return data;
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205 }
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206
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207 /**
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208 * Returns a bool indicating whether the receiver's OpenGL context
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209 * is the current context.
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210 *
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211 * @return true if the receiver holds the current OpenGL context,
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212 * false otherwise
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213 * @exception DWTException <ul>
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214 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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215 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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216 * </ul>
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217 */
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218 public bool isCurrent () {
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219 checkWidget ();
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220 return NSOpenGLContext.currentContext().id is glView.openGLContext().id;
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221 }
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222
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223 /**
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224 * Sets the OpenGL context associated with this GLCanvas to be the
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225 * current GL context.
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226 *
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227 * @exception DWTException <ul>
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228 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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229 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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230 * </ul>
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231 */
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232 public void setCurrent () {
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233 checkWidget ();
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234 glView.openGLContext().makeCurrentContext();
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235 }
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236
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237 /**
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238 * Swaps the front and back color buffers.
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239 *
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240 * @exception DWTException <ul>
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241 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
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242 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
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243 * </ul>
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244 */
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245 public void swapBuffers () {
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246 checkWidget ();
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247 glView.openGLContext().flushBuffer();
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248 }
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249 }