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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 #ifndef GrProgramResource_DEFINED | 8 #ifndef GrProgramResource_DEFINED |
9 #define GrProgramResource_DEFINED | 9 #define GrProgramResource_DEFINED |
10 | 10 |
11 #include "SkRefCnt.h" | 11 #include "SkRefCnt.h" |
12 | 12 |
13 class GrGpuResource; | 13 class GrGpuResource; |
14 | 14 |
15 /** | 15 /** |
16 * Class that wraps a resource referenced by a GrProgramElement or GrDrawState.
It manages | 16 * Class that wraps a resource referenced by a GrProgramElement or GrDrawState.
It manages |
17 * converting refs to pending io operations. Like SkAutoTUnref, its constructor
and setter adopt | 17 * converting refs to pending io operations. Like SkAutoTUnref, its constructor
and setter adopt |
18 * a ref from their caller. This class is intended only for internal use in core
Gr code. | 18 * a ref from their caller. This class is intended only for internal use in core
Gr code. |
19 */ | 19 */ |
20 class GrProgramResource : SkNoncopyable { | 20 class GrProgramResource : SkNoncopyable { |
21 public: | 21 public: |
| 22 SK_DECLARE_INST_COUNT_ROOT(GrProgramResource); |
| 23 |
22 enum IOType { | 24 enum IOType { |
23 kRead_IOType, | 25 kRead_IOType, |
24 kWrite_IOType, | 26 kWrite_IOType, |
25 kRW_IOType, | 27 kRW_IOType, |
26 | 28 |
27 kNone_IOType, // For internal use only, don't specify to constructor or
setResource(). | 29 kNone_IOType, // For internal use only, don't specify to constructor or
setResource(). |
28 }; | 30 }; |
29 | 31 |
30 SK_DECLARE_INST_COUNT_ROOT(GrProgramResource); | |
31 GrProgramResource(); | |
32 | |
33 /** Adopts a ref from the caller. ioType expresses what type of IO operation
s will be marked as | |
34 pending on the resource when markPendingIO is called. */ | |
35 explicit GrProgramResource(GrGpuResource*, IOType ioType); | |
36 | |
37 ~GrProgramResource(); | 32 ~GrProgramResource(); |
38 | 33 |
39 GrGpuResource* getResource() const { return fResource; } | 34 GrGpuResource* getResource() const { return fResource; } |
40 | 35 |
41 /** Adopts a ref from the caller. ioType expresses what type of IO operation
s will be marked as | |
42 pending on the resource when markPendingIO is called. */ | |
43 void setResource(GrGpuResource*, IOType ioType); | |
44 | |
45 /** Does this object own a pending read or write on the resource it is wrapp
ing. */ | 36 /** Does this object own a pending read or write on the resource it is wrapp
ing. */ |
46 bool ownsPendingIO() const { return fPendingIO; } | 37 bool ownsPendingIO() const { return fPendingIO; } |
47 | 38 |
48 /** Shortcut for calling setResource() with NULL. It cannot be called after
markingPendingIO | 39 /** Shortcut for calling setResource() with NULL. It cannot be called after
markingPendingIO |
49 is called. */ | 40 is called. */ |
50 void reset(); | 41 void reset(); |
51 | 42 |
| 43 protected: |
| 44 GrProgramResource(); |
| 45 |
| 46 /** Adopts a ref from the caller. ioType expresses what type of IO operation
s will be marked as |
| 47 pending on the resource when markPendingIO is called. */ |
| 48 GrProgramResource(GrGpuResource*, IOType); |
| 49 |
| 50 /** Adopts a ref from the caller. ioType expresses what type of IO operation
s will be marked as |
| 51 pending on the resource when markPendingIO is called. */ |
| 52 void setResource(GrGpuResource*, IOType); |
| 53 |
52 private: | 54 private: |
53 /** Called by owning GrProgramElement when the program element is first sche
duled for | 55 /** Called by owning GrProgramElement when the program element is first sche
duled for |
54 execution. */ | 56 execution. */ |
55 void markPendingIO() const; | 57 void markPendingIO() const; |
56 | 58 |
57 /** Called when the program element/draw state is no longer owned by GrDrawT
arget-client code. | 59 /** Called when the program element/draw state is no longer owned by GrDrawT
arget-client code. |
58 This lets the cache know that the drawing code will no longer schedule a
dditional reads or | 60 This lets the cache know that the drawing code will no longer schedule a
dditional reads or |
59 writes to the resource using the program element or draw state. */ | 61 writes to the resource using the program element or draw state. */ |
60 void removeRef() const; | 62 void removeRef() const; |
61 | 63 |
62 /** Called to indicate that the previous pending IO is complete. Useful when
the owning object | 64 /** Called to indicate that the previous pending IO is complete. Useful when
the owning object |
63 still has refs, so it is not about to destroy this GrProgramResource, bu
t its previously | 65 still has refs, so it is not about to destroy this GrProgramResource, bu
t its previously |
64 pending executions have been complete. | 66 pending executions have been complete. |
65 */ | 67 */ |
66 void pendingIOComplete() const; | 68 void pendingIOComplete() const; |
67 | 69 |
68 friend class GrRODrawState; | 70 friend class GrRODrawState; |
69 friend class GrProgramElement; | 71 friend class GrProgramElement; |
70 | 72 |
71 GrGpuResource* fResource; | 73 GrGpuResource* fResource; |
72 mutable bool fOwnRef; | 74 mutable bool fOwnRef; |
73 mutable bool fPendingIO; | 75 mutable bool fPendingIO; |
74 IOType fIOType; | 76 IOType fIOType; |
75 | 77 |
76 typedef SkNoncopyable INHERITED; | 78 typedef SkNoncopyable INHERITED; |
77 }; | 79 }; |
78 | 80 |
| 81 template <typename T> class GrProgramTResource : public GrProgramResource { |
| 82 public: |
| 83 GrProgramTResource() {} |
| 84 |
| 85 /** Adopts a ref from the caller. ioType expresses what type of IO operation
s will be marked as |
| 86 pending on the resource when markPendingIO is called. */ |
| 87 GrProgramTResource(T* resource, IOType ioType) : GrProgramResource(resource,
ioType) {} |
| 88 |
| 89 T* get() const { return static_cast<T*>(this->getResource()); } |
| 90 |
| 91 /** Adopts a ref from the caller. ioType expresses what type of IO operation
s will be marked as |
| 92 pending on the resource when markPendingIO is called. */ |
| 93 void set(T* resource, IOType ioType) { this->setResource(resource, ioType);
} |
| 94 }; |
| 95 |
| 96 |
79 #endif | 97 #endif |
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