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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "GrGLBufferImpl.h" | 8 #include "GrGLBufferImpl.h" |
9 #include "GrGpuGL.h" | 9 #include "GrGpuGL.h" |
10 | 10 |
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71 | 71 |
72 void* GrGLBufferImpl::lock(GrGpuGL* gpu) { | 72 void* GrGLBufferImpl::lock(GrGpuGL* gpu) { |
73 VALIDATE(); | 73 VALIDATE(); |
74 SkASSERT(!this->isLocked()); | 74 SkASSERT(!this->isLocked()); |
75 if (0 == fDesc.fID) { | 75 if (0 == fDesc.fID) { |
76 fLockPtr = fCPUData; | 76 fLockPtr = fCPUData; |
77 } else if (gpu->caps()->bufferLockSupport()) { | 77 } else if (gpu->caps()->bufferLockSupport()) { |
78 this->bind(gpu); | 78 this->bind(gpu); |
79 // Let driver know it can discard the old data | 79 // Let driver know it can discard the old data |
80 GL_CALL(gpu, BufferData(fBufferType, | 80 GL_CALL(gpu, BufferData(fBufferType, |
81 fDesc.fSizeInBytes, | 81 (GrGLsizeiptr) fDesc.fSizeInBytes, |
82 NULL, | 82 NULL, |
83 fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STA
TIC_DRAW)); | 83 fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STA
TIC_DRAW)); |
84 GR_GL_CALL_RET(gpu->glInterface(), | 84 GR_GL_CALL_RET(gpu->glInterface(), |
85 fLockPtr, | 85 fLockPtr, |
86 MapBuffer(fBufferType, GR_GL_WRITE_ONLY)); | 86 MapBuffer(fBufferType, GR_GL_WRITE_ONLY)); |
87 } | 87 } |
88 return fLockPtr; | 88 return fLockPtr; |
89 } | 89 } |
90 | 90 |
91 void GrGLBufferImpl::unlock(GrGpuGL* gpu) { | 91 void GrGLBufferImpl::unlock(GrGpuGL* gpu) { |
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112 } | 112 } |
113 if (0 == fDesc.fID) { | 113 if (0 == fDesc.fID) { |
114 memcpy(fCPUData, src, srcSizeInBytes); | 114 memcpy(fCPUData, src, srcSizeInBytes); |
115 return true; | 115 return true; |
116 } | 116 } |
117 this->bind(gpu); | 117 this->bind(gpu); |
118 GrGLenum usage = fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW; | 118 GrGLenum usage = fDesc.fDynamic ? DYNAMIC_USAGE_PARAM : GR_GL_STATIC_DRAW; |
119 | 119 |
120 #if GR_GL_USE_BUFFER_DATA_NULL_HINT | 120 #if GR_GL_USE_BUFFER_DATA_NULL_HINT |
121 if (fDesc.fSizeInBytes == srcSizeInBytes) { | 121 if (fDesc.fSizeInBytes == srcSizeInBytes) { |
122 GL_CALL(gpu, BufferData(fBufferType, srcSizeInBytes, src, usage)); | 122 GL_CALL(gpu, BufferData(fBufferType, (GrGLsizeiptr) srcSizeInBytes, src,
usage)); |
123 } else { | 123 } else { |
124 // Before we call glBufferSubData we give the driver a hint using | 124 // Before we call glBufferSubData we give the driver a hint using |
125 // glBufferData with NULL. This makes the old buffer contents | 125 // glBufferData with NULL. This makes the old buffer contents |
126 // inaccessible to future draws. The GPU may still be processing | 126 // inaccessible to future draws. The GPU may still be processing |
127 // draws that reference the old contents. With this hint it can | 127 // draws that reference the old contents. With this hint it can |
128 // assign a different allocation for the new contents to avoid | 128 // assign a different allocation for the new contents to avoid |
129 // flushing the gpu past draws consuming the old contents. | 129 // flushing the gpu past draws consuming the old contents. |
130 GL_CALL(gpu, BufferData(fBufferType, fDesc.fSizeInBytes, NULL, usage)); | 130 GL_CALL(gpu, BufferData(fBufferType, (GrGLsizeiptr) fDesc.fSizeInBytes,
NULL, usage)); |
131 GL_CALL(gpu, BufferSubData(fBufferType, 0, srcSizeInBytes, src)); | 131 GL_CALL(gpu, BufferSubData(fBufferType, 0, (GrGLsizeiptr) srcSizeInBytes
, src)); |
132 } | 132 } |
133 #else | 133 #else |
134 // Note that we're cheating on the size here. Currently no methods | 134 // Note that we're cheating on the size here. Currently no methods |
135 // allow a partial update that preserves contents of non-updated | 135 // allow a partial update that preserves contents of non-updated |
136 // portions of the buffer (lock() does a glBufferData(..size, NULL..)) | 136 // portions of the buffer (lock() does a glBufferData(..size, NULL..)) |
137 bool doSubData = false; | 137 bool doSubData = false; |
138 #if GR_GL_MAC_BUFFER_OBJECT_PERFOMANCE_WORKAROUND | 138 #if GR_GL_MAC_BUFFER_OBJECT_PERFOMANCE_WORKAROUND |
139 static int N = 0; | 139 static int N = 0; |
140 // 128 was chosen experimentally. At 256 a slight hitchiness was noticed | 140 // 128 was chosen experimentally. At 256 a slight hitchiness was noticed |
141 // when dragging a Chromium window around with a canvas tab backgrounded. | 141 // when dragging a Chromium window around with a canvas tab backgrounded. |
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156 return true; | 156 return true; |
157 } | 157 } |
158 | 158 |
159 void GrGLBufferImpl::validate() const { | 159 void GrGLBufferImpl::validate() const { |
160 SkASSERT(GR_GL_ARRAY_BUFFER == fBufferType || GR_GL_ELEMENT_ARRAY_BUFFER ==
fBufferType); | 160 SkASSERT(GR_GL_ARRAY_BUFFER == fBufferType || GR_GL_ELEMENT_ARRAY_BUFFER ==
fBufferType); |
161 // The following assert isn't valid when the buffer has been abandoned: | 161 // The following assert isn't valid when the buffer has been abandoned: |
162 // SkASSERT((0 == fDesc.fID) == (NULL != fCPUData)); | 162 // SkASSERT((0 == fDesc.fID) == (NULL != fCPUData)); |
163 SkASSERT(0 != fDesc.fID || !fDesc.fIsWrapped); | 163 SkASSERT(0 != fDesc.fID || !fDesc.fIsWrapped); |
164 SkASSERT(NULL == fCPUData || NULL == fLockPtr || fCPUData == fLockPtr); | 164 SkASSERT(NULL == fCPUData || NULL == fLockPtr || fCPUData == fLockPtr); |
165 } | 165 } |
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