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Side by Side Diff: src/gpu/GrGeometryBuffer.h

Issue 275493004: Rename from "(un)lock" to "(un)map" for geometry buffers. (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Address Rob's comments Created 6 years, 7 months ago
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1 1
2 /* 2 /*
3 * Copyright 2011 Google Inc. 3 * Copyright 2011 Google Inc.
4 * 4 *
5 * Use of this source code is governed by a BSD-style license that can be 5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file. 6 * found in the LICENSE file.
7 */ 7 */
8 8
9 9
10 #ifndef GrGeometryBuffer_DEFINED 10 #ifndef GrGeometryBuffer_DEFINED
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23 23
24 /** 24 /**
25 *Retrieves whether the buffer was created with the dynamic flag 25 *Retrieves whether the buffer was created with the dynamic flag
26 * 26 *
27 * @return true if the buffer was created with the dynamic flag 27 * @return true if the buffer was created with the dynamic flag
28 */ 28 */
29 bool dynamic() const { return fDynamic; } 29 bool dynamic() const { return fDynamic; }
30 30
31 /** 31 /**
32 * Returns true if the buffer is a wrapper around a CPU array. If true it 32 * Returns true if the buffer is a wrapper around a CPU array. If true it
33 * indicates that lock will always succeed and will be free. 33 * indicates that map will always succeed and will be free.
34 */ 34 */
35 bool isCPUBacked() const { return fCPUBacked; } 35 bool isCPUBacked() const { return fCPUBacked; }
36 36
37 /** 37 /**
38 * Locks the buffer to be written by the CPU. 38 * Maps the buffer to be written by the CPU.
39 * 39 *
40 * The previous content of the buffer is invalidated. It is an error 40 * The previous content of the buffer is invalidated. It is an error
41 * to draw from the buffer while it is locked. It is an error to call lock 41 * to draw from the buffer while it is mapped. It is an error to call map
42 * on an already locked buffer. It may fail if the backend doesn't support 42 * on an already mapped buffer. It may fail if the backend doesn't support
43 * locking the buffer. If the buffer is CPU backed then it will always 43 * mapping the buffer. If the buffer is CPU backed then it will always
44 * succeed and is a free operation. Must be matched by an unlock() call. 44 * succeed and is a free operation. Must be matched by an unmap() call.
45 * Currently only one lock at a time is supported (no nesting of 45 * Currently only one map at a time is supported (no nesting of
46 * lock/unlock). 46 * map/unmap).
47 * 47 *
48 * @return a pointer to the data or NULL if the lock fails. 48 * @return a pointer to the data or NULL if the map fails.
49 */ 49 */
50 virtual void* lock() = 0; 50 virtual void* map() = 0;
51 51
52 /** 52 /**
53 * Returns the same ptr that lock() returned at time of lock or NULL if the 53 * Returns the same ptr that map() returned at time of map or NULL if the
54 * is not locked. 54 * is not mapped.
55 * 55 *
56 * @return ptr to locked buffer data or undefined if buffer is not locked. 56 * @return ptr to mapped buffer data or undefined if buffer is not mapped.
57 */ 57 */
58 virtual void* lockPtr() const = 0; 58 virtual void* mapPtr() const = 0;
59 59
60 /** 60 /**
61 * Unlocks the buffer. 61 * Unmaps the buffer.
62 * 62 *
63 * The pointer returned by the previous lock call will no longer be valid. 63 * The pointer returned by the previous map call will no longer be valid.
64 */ 64 */
65 virtual void unlock() = 0; 65 virtual void unmap() = 0;
66 66
67 /** 67 /**
68 Queries whether the buffer has been locked. 68 Queries whether the buffer has been mapped.
69 69
70 @return true if the buffer is locked, false otherwise. 70 @return true if the buffer is mapped, false otherwise.
71 */ 71 */
72 virtual bool isLocked() const = 0; 72 virtual bool isMapped() const = 0;
73 73
74 /** 74 /**
75 * Updates the buffer data. 75 * Updates the buffer data.
76 * 76 *
77 * The size of the buffer will be preserved. The src data will be 77 * The size of the buffer will be preserved. The src data will be
78 * placed at the beginning of the buffer and any remaining contents will 78 * placed at the beginning of the buffer and any remaining contents will
79 * be undefined. 79 * be undefined.
80 * 80 *
81 * @return returns true if the update succeeds, false otherwise. 81 * @return returns true if the update succeeds, false otherwise.
82 */ 82 */
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94 94
95 private: 95 private:
96 size_t fGpuMemorySize; 96 size_t fGpuMemorySize;
97 bool fDynamic; 97 bool fDynamic;
98 bool fCPUBacked; 98 bool fCPUBacked;
99 99
100 typedef GrGpuObject INHERITED; 100 typedef GrGpuObject INHERITED;
101 }; 101 };
102 102
103 #endif 103 #endif
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