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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "config.h" | 5 #include "config.h" |
6 | 6 |
7 #include "modules/webgl/WebGLTimerQueryEXT.h" | 7 #include "modules/webgl/WebGLTimerQueryEXT.h" |
8 | 8 |
9 #include "modules/webgl/WebGLRenderingContextBase.h" | 9 #include "modules/webgl/WebGLRenderingContextBase.h" |
10 #include "public/platform/Platform.h" | |
10 | 11 |
11 namespace blink { | 12 namespace blink { |
12 | 13 |
13 WebGLTimerQueryEXT* WebGLTimerQueryEXT::create(WebGLRenderingContextBase* ctx) | 14 WebGLTimerQueryEXT* WebGLTimerQueryEXT::create(WebGLRenderingContextBase* ctx) |
14 { | 15 { |
15 return new WebGLTimerQueryEXT(ctx); | 16 return new WebGLTimerQueryEXT(ctx); |
16 } | 17 } |
17 | 18 |
18 WebGLTimerQueryEXT::~WebGLTimerQueryEXT() | 19 WebGLTimerQueryEXT::~WebGLTimerQueryEXT() |
19 { | 20 { |
21 unregisterTaskObserver(); | |
22 | |
20 // See the comment in WebGLObject::detachAndDeleteObject(). | 23 // See the comment in WebGLObject::detachAndDeleteObject(). |
21 detachAndDeleteObject(); | 24 detachAndDeleteObject(); |
22 } | 25 } |
23 | 26 |
24 WebGLTimerQueryEXT::WebGLTimerQueryEXT(WebGLRenderingContextBase* ctx) | 27 WebGLTimerQueryEXT::WebGLTimerQueryEXT(WebGLRenderingContextBase* ctx) |
25 : WebGLContextObject(ctx) | 28 : WebGLContextObject(ctx) |
26 , m_target(0) | 29 , m_target(0) |
27 , m_queryId(0) | 30 , m_queryId(0) |
31 , m_taskObserverRegistered(false) | |
32 , m_canUpdateAvailability(false) | |
33 , m_queryResultAvailable(false) | |
34 , m_queryResult(0) | |
28 { | 35 { |
29 m_queryId = context()->webContext()->createQueryEXT(); | 36 m_queryId = context()->webContext()->createQueryEXT(); |
30 } | 37 } |
31 | 38 |
39 void WebGLTimerQueryEXT::resetCachedResult() | |
David Yen
2015/10/05 17:23:16
We also need to reset the cache results when begin
| |
40 { | |
41 m_canUpdateAvailability = false; | |
42 m_queryResultAvailable = false; | |
43 m_queryResult = 0; | |
44 // When this is called, the implication is that we should start | |
45 // keeping track of whether we can update the cached availability | |
46 // and result. | |
47 registerTaskObserver(); | |
48 } | |
49 | |
50 void WebGLTimerQueryEXT::updateCachedResult(WebGraphicsContext3D* ctx) | |
51 { | |
52 if (m_queryResultAvailable) | |
53 return; | |
54 | |
55 if (!m_canUpdateAvailability) | |
56 return; | |
57 | |
58 if (!hasTarget()) | |
59 return; | |
60 | |
61 // We can only update the cached result when control returns to the browser. | |
62 m_canUpdateAvailability = false; | |
63 GLuint available = 0; | |
64 ctx->getQueryObjectuivEXT(object(), GL_QUERY_RESULT_AVAILABLE_EXT, &availabl e); | |
65 m_queryResultAvailable = !!available; | |
66 if (m_queryResultAvailable) { | |
67 GLuint64 result = 0; | |
68 ctx->getQueryObjectui64vEXT(object(), GL_QUERY_RESULT_EXT, &result); | |
69 m_queryResult = result; | |
70 unregisterTaskObserver(); | |
71 } | |
72 } | |
73 | |
74 bool WebGLTimerQueryEXT::isQueryResultAvailable() | |
75 { | |
76 return m_queryResultAvailable; | |
77 } | |
78 | |
79 GLuint64 WebGLTimerQueryEXT::getQueryResult() | |
80 { | |
81 return m_queryResult; | |
82 } | |
83 | |
32 void WebGLTimerQueryEXT::deleteObjectImpl(WebGraphicsContext3D* context3d) | 84 void WebGLTimerQueryEXT::deleteObjectImpl(WebGraphicsContext3D* context3d) |
33 { | 85 { |
34 context3d->deleteQueryEXT(m_queryId); | 86 context3d->deleteQueryEXT(m_queryId); |
35 m_queryId = 0; | 87 m_queryId = 0; |
36 } | 88 } |
37 | 89 |
90 void WebGLTimerQueryEXT::registerTaskObserver() | |
91 { | |
92 if (!m_taskObserverRegistered) { | |
93 m_taskObserverRegistered = true; | |
94 Platform::current()->currentThread()->addTaskObserver(this); | |
95 } | |
96 } | |
97 | |
98 void WebGLTimerQueryEXT::unregisterTaskObserver() | |
99 { | |
100 if (m_taskObserverRegistered) { | |
101 m_taskObserverRegistered = false; | |
102 Platform::current()->currentThread()->removeTaskObserver(this); | |
103 } | |
104 } | |
105 | |
106 void WebGLTimerQueryEXT::didProcessTask() | |
107 { | |
108 m_canUpdateAvailability = true; | |
109 } | |
110 | |
38 } // namespace blink | 111 } // namespace blink |
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