The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/gpu/GrReducedClip.h
gfx/skia/trunk/src/gpu/GrReducedClip.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:81ffad6b415b |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2012 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 #include "SkClipStack.h" | |
| 10 #include "SkTLList.h" | |
| 11 | |
| 12 namespace GrReducedClip { | |
| 13 | |
| 14 typedef SkTLList<SkClipStack::Element> ElementList; | |
| 15 | |
| 16 enum InitialState { | |
| 17 kAllIn_InitialState, | |
| 18 kAllOut_InitialState, | |
| 19 }; | |
| 20 | |
| 21 /** | |
| 22 * This function takes a clip stack and a query rectangle and it produces a reduced set of | |
| 23 * SkClipStack::Elements that are equivalent to applying the full stack to the rectangle. The clip | |
| 24 * stack generation id that represents the list of elements is returned in resultGenID. The | |
| 25 * initial state of the query rectangle before the first clip element is applied is returned via | |
| 26 * initialState. Optionally, the caller can request a tighter bounds on the clip be returned via | |
| 27 * tighterBounds. If not NULL, tighterBounds will always be contained by queryBounds after return. | |
| 28 * If tighterBounds is specified then it is assumed that the caller will implicitly clip against it. | |
| 29 * If the caller specifies non-NULL for requiresAA then it will indicate whether anti-aliasing is | |
| 30 * required to process any of the elements in the result. | |
| 31 * | |
| 32 * This may become a member function of SkClipStack when its interface is determined to be stable. | |
| 33 * Marked SK_API so that SkLua can call this in a shared library build. | |
| 34 */ | |
| 35 SK_API void ReduceClipStack(const SkClipStack& stack, | |
| 36 const SkIRect& queryBounds, | |
| 37 ElementList* result, | |
| 38 int32_t* resultGenID, | |
| 39 InitialState* initialState, | |
| 40 SkIRect* tighterBounds = NULL, | |
| 41 bool* requiresAA = NULL); | |
| 42 | |
| 43 } // namespace GrReducedClip |
