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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 "GrReducedClip.h" | 8 #include "GrReducedClip.h" |
9 | 9 |
10 typedef SkClipStack::Element Element; | 10 typedef SkClipStack::Element Element; |
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27 | 27 |
28 // During our backwards walk, track whether we've seen ops that either grow
or shrink the clip. | 28 // During our backwards walk, track whether we've seen ops that either grow
or shrink the clip. |
29 // TODO: track these per saved clip so that we can consider them on the forw
ard pass. | 29 // TODO: track these per saved clip so that we can consider them on the forw
ard pass. |
30 bool embiggens = false; | 30 bool embiggens = false; |
31 bool emsmallens = false; | 31 bool emsmallens = false; |
32 | 32 |
33 SkClipStack::Iter iter(stack, SkClipStack::Iter::kTop_IterStart); | 33 SkClipStack::Iter iter(stack, SkClipStack::Iter::kTop_IterStart); |
34 int numAAElements = 0; | 34 int numAAElements = 0; |
35 while ((kUnknown_InitialState == *initialState)) { | 35 while ((kUnknown_InitialState == *initialState)) { |
36 const Element* element = iter.prev(); | 36 const Element* element = iter.prev(); |
37 if (NULL == element) { | 37 if (nullptr == element) { |
38 *initialState = GrReducedClip::kAllIn_InitialState; | 38 *initialState = GrReducedClip::kAllIn_InitialState; |
39 break; | 39 break; |
40 } | 40 } |
41 if (SkClipStack::kEmptyGenID == element->getGenID()) { | 41 if (SkClipStack::kEmptyGenID == element->getGenID()) { |
42 *initialState = GrReducedClip::kAllOut_InitialState; | 42 *initialState = GrReducedClip::kAllOut_InitialState; |
43 break; | 43 break; |
44 } | 44 } |
45 if (SkClipStack::kWideOpenGenID == element->getGenID()) { | 45 if (SkClipStack::kWideOpenGenID == element->getGenID()) { |
46 *initialState = GrReducedClip::kAllIn_InitialState; | 46 *initialState = GrReducedClip::kAllIn_InitialState; |
47 break; | 47 break; |
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432 SkRect scalarBounds = SkRect::Make(*bounds); | 432 SkRect scalarBounds = SkRect::Make(*bounds); |
433 | 433 |
434 // Now that we have determined the bounds to use and filtered out the trivia
l cases, call the | 434 // Now that we have determined the bounds to use and filtered out the trivia
l cases, call the |
435 // helper that actually walks the stack. | 435 // helper that actually walks the stack. |
436 reduced_stack_walker(stack, scalarBounds, result, resultGenID, initialState,
requiresAA); | 436 reduced_stack_walker(stack, scalarBounds, result, resultGenID, initialState,
requiresAA); |
437 | 437 |
438 // The list that was computed in this function may be cached based on the ge
n id of the last | 438 // The list that was computed in this function may be cached based on the ge
n id of the last |
439 // element. | 439 // element. |
440 SkASSERT(SkClipStack::kInvalidGenID != *resultGenID); | 440 SkASSERT(SkClipStack::kInvalidGenID != *resultGenID); |
441 } | 441 } |
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