Mercurial > projects > dwt-mac
annotate dwt/opengl/GLCanvas.d @ 117:bb00974d5ded
Ported dwt.opengl.GLData
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 31 Dec 2008 15:48:20 +0100 |
parents | 580596d83ac4 |
children | 04928add86e6 |
rev | line source |
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45 | 1 /******************************************************************************* |
2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
0
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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 |
116 | 10 * |
11 * Port to the D programming language: | |
12 * Jacob Carlborg <doob@me.com> | |
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13 *******************************************************************************/ |
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14 module dwt.opengl.GLCanvas; |
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15 |
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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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28 |
116 | 29 import dwt.internal.objc.cocoa.Cocoa; |
30 import dwt.opengl.GLData; | |
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 * |
45 | 35 * @see GLData |
36 * @see <a href="http://www.eclipse.org/swt/snippets/#opengl">OpenGL snippets</a> | |
37 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
38 * | |
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39 * @since 3.2 |
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40 */ |
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41 |
3 | 42 public class GLCanvas : Canvas { |
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43 NSOpenGLView glView; |
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44 NSOpenGLPixelFormat pixelFormat; |
116 | 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 */ |
5 | 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; |
45 | 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; |
116 | 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 } |
116 | 123 pixelFormat.initWithAttributes((cast(NSOpenGLPixelFormatAttribute[])attrib).ptr); |
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124 |
116 | 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 } |
45 | 130 glView.initWithFrame(parent.view.bounds(), pixelFormat); |
0
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131 glView.setAutoresizingMask(OS.NSViewWidthSizable | OS.NSViewHeightSizable); |
45 | 132 parent.view.addSubview(glView); |
0
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133 |
116 | 134 Listener listener = new class () Listener { |
0
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135 public void handleEvent (Event event) { |
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136 switch (event.type) { |
45 | 137 case DWT.Dispose: |
138 if (glView !is null) { | |
139 glView.clearGLContext(); | |
140 glView.release(); | |
141 } | |
142 glView = null; | |
143 if (pixelFormat !is null) pixelFormat.release(); | |
144 pixelFormat = null; | |
145 break; | |
116 | 146 default: |
0
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147 } |
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148 } |
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149 }; |
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150 addListener (DWT.Dispose, listener); |
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151 } |
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152 |
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153 /** |
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154 * Returns a GLData object describing the created context. |
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155 * |
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156 * @return GLData description of the OpenGL context attributes |
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157 * @exception DWTException <ul> |
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158 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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159 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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160 * </ul> |
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161 */ |
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162 public GLData getGLData () { |
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163 checkWidget (); |
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164 GLData data = new GLData (); |
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165 int [] value = new int [1]; |
45 | 166 //TODO implement getGLData() |
0
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167 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_DOUBLEBUFFER, value); |
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168 // data.doubleBuffer = value [0] !is 0; |
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169 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_STEREO, value); |
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170 // data.stereo = value [0] !is 0; |
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171 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_RED_SIZE, value); |
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172 // data.redSize = value [0]; |
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173 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_GREEN_SIZE, value); |
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174 // data.greenSize = value [0]; |
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175 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_BLUE_SIZE, value); |
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176 // data.blueSize = value [0]; |
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177 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ALPHA_SIZE, value); |
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178 // data.alphaSize = value [0]; |
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179 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_DEPTH_SIZE, value); |
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180 // data.depthSize = value [0]; |
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181 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_STENCIL_SIZE, value); |
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182 // data.stencilSize = value [0]; |
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183 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_RED_SIZE, value); |
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184 // data.accumRedSize = value [0]; |
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185 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_GREEN_SIZE, value); |
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186 // data.accumGreenSize = value [0]; |
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187 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_BLUE_SIZE, value); |
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188 // data.accumBlueSize = value [0]; |
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189 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_ACCUM_ALPHA_SIZE, value); |
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190 // data.accumAlphaSize = value [0]; |
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191 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_SAMPLE_BUFFERS_ARB, value); |
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192 // data.sampleBuffers = value [0]; |
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193 // AGL.aglDescribePixelFormat (pixelFormat, AGL.AGL_SAMPLES_ARB, value); |
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194 data.samples = value [0]; |
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195 return data; |
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196 } |
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197 |
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198 /** |
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199 * Returns a bool indicating whether the receiver's OpenGL context |
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200 * is the current context. |
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201 * |
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202 * @return true if the receiver holds the current OpenGL context, |
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203 * false otherwise |
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204 * @exception DWTException <ul> |
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205 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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206 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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207 * </ul> |
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208 */ |
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209 public bool isCurrent () { |
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210 checkWidget (); |
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211 return NSOpenGLContext.currentContext().id is glView.openGLContext().id; |
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212 } |
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213 |
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214 /** |
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215 * Sets the OpenGL context associated with this GLCanvas to be the |
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216 * current GL context. |
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217 * |
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218 * @exception DWTException <ul> |
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219 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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220 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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221 * </ul> |
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222 */ |
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223 public void setCurrent () { |
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224 checkWidget (); |
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225 glView.openGLContext().makeCurrentContext(); |
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226 } |
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227 |
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228 /** |
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229 * Swaps the front and back color buffers. |
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230 * |
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231 * @exception DWTException <ul> |
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232 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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233 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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234 * </ul> |
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235 */ |
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236 public void swapBuffers () { |
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237 checkWidget (); |
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238 glView.openGLContext().flushBuffer(); |
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239 } |
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240 } |