third_party/webgl/extensions/WEBKIT_lose_context/index.html - Issue 9360034: Remove everthing except conformance tests in the deps/third_party/webgl

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Issue 9360034: Remove everthing except conformance tests in the deps/third_party/webgl (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/

Patch Set: Created 8 years, 10 months ago

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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"

2 "http://www.w3.org/TR/html4/strict.dtd">

3 <html lang="en">

4 <head>

5 <meta http-equiv="content-type" content="text/html; charset=utf-8">

6 <title>WebGL WEBKIT_lose_context Extension Specification</title>

7 <link rel="stylesheet" type="text/css" href="../../resources/webgl-extension .css" />

8 <link rel="stylesheet" type="text/css" href="../../resources/default.css" />

9 <script src="../../resources/jquery-1.3.2.min.js" type="text/javascript"></s cript>

10 </head>

11 <!--begin-logo-->

12 <div>

13 <a href="http://webgl.org/"><img alt=WebGL height=72 src="../../resources/ WebGL-Logo.png" width=156></a>

14 <div class=right>

15 <a href="http://khronos.org/"><img alt=Khronos height=60 src="../../reso urces/KhronosGroup-3D.png" width=220></a>

16 </div>

17 </div>

18 <!--end-logo-->

19

20 <h1>WebGL WEBKIT_lose_context Extension Draft Specification</h1>

21

22 <h2 class="no-toc">Name</h2>

23 <p> WEBKIT_lose_context </p>

24

25 <h2 class="no-toc">Contact</h2>

26 <p> <a href="mailto:enne@chromium.org">enne@chromium.org</a> </p>

27

28 <h2 class="no-toc">Contributors</h2>

29 <p> Members of the <a href="https://www.khronos.org/webgl/public-mailing-lis t/">WebGL working group</a> </p>

30 <p> Glenn Maynard </p>

31

32 <h2 class="no-toc">Status</h2>

33 <p> Draft; revision underway. Do not ship!

34 </p>

35

36 <h2 class="no-toc">Version</h2>

37 <p> Last modified date: April 14, 2011 <br>

38 Revision: 2

39 </p>

40

41 <h2 class="no-toc">Number</h2>

42 <p> WebGL extension #3 </p>

43

44 <h2 class="no-toc">Dependencies</h2>

45 <p> Written against the WebGL API 1.0 specification. </p>

46

47 <h2 class="no-toc">Overview</h2>

48 <p>

49 This extension exposes new functions which simulate losing and restoring t he WebGL context, even on platforms where the context can never be lost. Consul t the WebGL specification for documentation about the <code>webglcontextlost</co de> and <code>webglcontextrestored</code> events.

50 </p>

51 <h2 class="no-toc">IDL</h2>

52 <p>

53 <pre class="idl">

54 module webgl {

55

56 interface WEBKIT_lose_context {

57 void loseContext();

58 void restoreContext();

59 };

60

61 };

62 </pre>

63 </p>

64

65 <h2 class="no-toc">New Procedures and Functions</h2>

66 <h3 class="no-toc">void loseContext()</h3>

67 <p>

68 When this function is called and the context is not lost, a <code>webglconte xtlost</code> event will be dispatched. The behavior of the WebGL context after this event has been dispatched is identical to one after a real context lost ev ent. The context will remain in the lost state according to the WebGL specifica tion until <code>restoreContext()</code> is called. If the context is already l ost when this function is called, an <code>INVALID_OPERATION</code> error will b e generated and no event will be dispatched.

69 </p>

70 <h3 class="no-toc">void restoreContext()</h3>

71 <p>

72 When this function is called, the context is lost, and the conditions define d by the WebGL specification for delivery of the <code>webglcontextrestored</cod e> event have been satisfied, a <code>webglcontextrestored</code> event will be dispatched. The behavior of the WebGL context after this event has been dispatc hed is identical to one after a real context restored event. If the context is already restored when this function is called, or if the conditions in the WebGL specification for delivery of the <code>webglcontextrestored</code> event are n ot satisfied, an <code>INVALID_OPERATION</code> error will be generated and no e vent will be dispatched.

73 </p>

74

75 <h2 class="no-toc">Revision History</h2>

76 <p>

77 Revision 1, 2011/01/11

78 <ul>

79 <li> Initial revision.

80 </ul>

81 </p>

82 <p>

83 Revision 2, 2011/04/14

84 <ul>

85 <li> Added explicit restoreContext() method based on discussion on public_ webgl list, to enable testing of scenario where context stays lost for a period of time.

86 </ul>

87 </p>

88 </body>

89 </html>

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