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| 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * |
| 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions |
| 6 * are met: |
| 7 * 1. Redistributions of source code must retain the above copyright |
| 8 * notice, this list of conditions and the following disclaimer. |
| 9 * 2. Redistributions in binary form must reproduce the above copyright |
| 10 * notice, this list of conditions and the following disclaimer in the |
| 11 * documentation and/or other materials provided with the distribution. |
| 12 * |
| 13 * THIS SOFTWARE IS PROVIDED BY GOOGLE, INC. ``AS IS'' AND ANY |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE, INC. OR |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 24 */ |
| 25 |
| 26 #include "config.h" |
| 27 |
| 28 #include "core/html/canvas/WebGLSharedResources.h" |
| 29 |
| 30 #include "core/html/canvas/WebGLAcquireSharedResourceCallback.h" |
| 31 #include "core/html/canvas/WebGLContextGroup.h" |
| 32 #include "core/html/canvas/WebGLRenderingContext.h" |
| 33 #include "core/html/canvas/WebGLShareGroup.h" |
| 34 #include "core/platform/graphics/Extensions3D.h" |
| 35 |
| 36 namespace WebCore { |
| 37 |
| 38 WebGLSharedResources::WebGLSharedResources(WebGLRenderingContext* context) |
| 39 : WebGLExtension(context) |
| 40 , m_shareGroup(WebGLShareGroup::create(context->contextGroup())) |
| 41 { |
| 42 } |
| 43 |
| 44 WebGLSharedResources::~WebGLSharedResources() |
| 45 { |
| 46 } |
| 47 |
| 48 bool WebGLSharedResources::intToAcquireMode(unsigned value, WebGLSharedObject::A
cquireMode* mode) |
| 49 { |
| 50 switch (value) { |
| 51 case 0: |
| 52 *mode = WebGLSharedObject::Unacquired; |
| 53 return true; |
| 54 case 1: |
| 55 *mode = WebGLSharedObject::ReadOnly; |
| 56 return true; |
| 57 case 4: |
| 58 *mode = WebGLSharedObject::Exclusive; |
| 59 return true; |
| 60 default: |
| 61 return false; |
| 62 } |
| 63 } |
| 64 |
| 65 WebGLExtension::ExtensionName WebGLSharedResources::getName() const |
| 66 { |
| 67 return WebGLSharedResourcesName; |
| 68 } |
| 69 |
| 70 void WebGLSharedResources::lose(bool force) |
| 71 { |
| 72 // WebGLSharedResouces is not lost because it would cause too many hard to w
ork around race considtions. |
| 73 // It is not actually manipulating GL resources. It is just passing referenc
es. |
| 74 if (force) |
| 75 WebGLExtension::lose(true); |
| 76 } |
| 77 |
| 78 PassRefPtr<WebGLSharedResources> WebGLSharedResources::create(WebGLRenderingCont
ext* context) |
| 79 { |
| 80 return adoptRef(new WebGLSharedResources(context)); |
| 81 } |
| 82 |
| 83 long WebGLSharedResources::acquireSharedResource(WebGLSharedObject* object, unsi
gned desiredMode, PassRefPtr<WebGLAcquireSharedResourceCallback> callback, Excep
tionCode& ec) |
| 84 { |
| 85 WebGLSharedObject::AcquireMode mode; |
| 86 if (!intToAcquireMode(desiredMode, &mode)) { |
| 87 m_context->synthesizeGLError(GraphicsContext3D::INVALID_ENUM, "acquireSh
aredResource", "unknown mode"); |
| 88 return 0; |
| 89 } |
| 90 return m_context->acquireSharedResource(object, mode, callback, ec); |
| 91 } |
| 92 |
| 93 void WebGLSharedResources::releaseSharedResource(WebGLSharedObject* object, Exce
ptionCode& ec) |
| 94 { |
| 95 m_context->releaseSharedResource(object, ec); |
| 96 } |
| 97 |
| 98 void WebGLSharedResources::cancelAcquireSharedResource(long id) |
| 99 { |
| 100 m_context->cancelAcquireSharedResource(id); |
| 101 } |
| 102 |
| 103 bool WebGLSharedResources::supported(WebGLRenderingContext*) |
| 104 { |
| 105 return true; |
| 106 } |
| 107 |
| 108 PassRefPtr<WebGLShareGroup> WebGLSharedResources::group() const |
| 109 { |
| 110 return m_shareGroup; |
| 111 } |
| 112 |
| 113 const char* WebGLSharedResources::getExtensionName() |
| 114 { |
| 115 return "WEBGL_shared_resources"; |
| 116 } |
| 117 |
| 118 } // namespace WebCore |
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