1 #include "precompiled.h"
2 //
3 // Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
4 // Use of this source code is governed by a BSD-style license that can be
5 // found in the LICENSE file.
6 //
7
8 // Fence11.cpp: Defines the rx::Fence11 class which implements rx::FenceImpl.
9
10 #include "libGLESv2/renderer/Fence11.h"
11 #include "libGLESv2/main.h"
12 #include "libGLESv2/renderer/Renderer11.h"
13
14 namespace rx
15 {
16
Fence11(rx::Renderer11 * renderer)17 Fence11::Fence11(rx::Renderer11 *renderer)
18 {
19 mRenderer = renderer;
20 mQuery = NULL;
21 }
22
~Fence11()23 Fence11::~Fence11()
24 {
25 if (mQuery)
26 {
27 mQuery->Release();
28 mQuery = NULL;
29 }
30 }
31
isFence()32 GLboolean Fence11::isFence()
33 {
34 // GL_NV_fence spec:
35 // A name returned by GenFencesNV, but not yet set via SetFenceNV, is not the name of an existing fence.
36 return mQuery != NULL;
37 }
38
setFence(GLenum condition)39 void Fence11::setFence(GLenum condition)
40 {
41 if (!mQuery)
42 {
43 D3D11_QUERY_DESC queryDesc;
44 queryDesc.Query = D3D11_QUERY_EVENT;
45 queryDesc.MiscFlags = 0;
46
47 if (FAILED(mRenderer->getDevice()->CreateQuery(&queryDesc, &mQuery)))
48 {
49 return gl::error(GL_OUT_OF_MEMORY);
50 }
51 }
52
53 mRenderer->getDeviceContext()->End(mQuery);
54
55 setCondition(condition);
56 setStatus(GL_FALSE);
57 }
58
testFence()59 GLboolean Fence11::testFence()
60 {
61 if (mQuery == NULL)
62 {
63 return gl::error(GL_INVALID_OPERATION, GL_TRUE);
64 }
65
66 HRESULT result = mRenderer->getDeviceContext()->GetData(mQuery, NULL, 0, 0);
67
68 if (mRenderer->isDeviceLost())
69 {
70 return gl::error(GL_OUT_OF_MEMORY, GL_TRUE);
71 }
72
73 ASSERT(result == S_OK || result == S_FALSE);
74 setStatus(result == S_OK);
75 return getStatus();
76 }
77
finishFence()78 void Fence11::finishFence()
79 {
80 if (mQuery == NULL)
81 {
82 return gl::error(GL_INVALID_OPERATION);
83 }
84
85 while (!testFence())
86 {
87 Sleep(0);
88 }
89 }
90
getFenceiv(GLenum pname,GLint * params)91 void Fence11::getFenceiv(GLenum pname, GLint *params)
92 {
93 if (mQuery == NULL)
94 {
95 return gl::error(GL_INVALID_OPERATION);
96 }
97
98 switch (pname)
99 {
100 case GL_FENCE_STATUS_NV:
101 {
102 // GL_NV_fence spec:
103 // Once the status of a fence has been finished (via FinishFenceNV) or tested and the returned status is TRUE (via either TestFenceNV
104 // or GetFenceivNV querying the FENCE_STATUS_NV), the status remains TRUE until the next SetFenceNV of the fence.
105 if (getStatus())
106 {
107 params[0] = GL_TRUE;
108 return;
109 }
110
111 HRESULT result = mRenderer->getDeviceContext()->GetData(mQuery, NULL, 0, D3D11_ASYNC_GETDATA_DONOTFLUSH);
112
113 if (mRenderer->isDeviceLost())
114 {
115 params[0] = GL_TRUE;
116 return gl::error(GL_OUT_OF_MEMORY);
117 }
118
119 ASSERT(result == S_OK || result == S_FALSE);
120 setStatus(result == S_OK);
121 params[0] = getStatus();
122
123 break;
124 }
125 case GL_FENCE_CONDITION_NV:
126 params[0] = getCondition();
127 break;
128 default:
129 return gl::error(GL_INVALID_ENUM);
130 break;
131 }
132 }
133
134 }
135