gfx/skia/trunk/src/gpu/GrReducedClip.h@6474c204b198 (annotated)
gfx/skia/trunk/src/gpu/GrReducedClip.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | |
| michael@0 | 2 | /* |
| michael@0 | 3 | * Copyright 2012 Google Inc. |
| michael@0 | 4 | * |
| michael@0 | 5 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 6 | * found in the LICENSE file. |
| michael@0 | 7 | */ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "SkClipStack.h" |
| michael@0 | 10 | #include "SkTLList.h" |
| michael@0 | 11 | |
| michael@0 | 12 | namespace GrReducedClip { |
| michael@0 | 13 | |
| michael@0 | 14 | typedef SkTLList<SkClipStack::Element> ElementList; |
| michael@0 | 15 | |
| michael@0 | 16 | enum InitialState { |
| michael@0 | 17 | kAllIn_InitialState, |
| michael@0 | 18 | kAllOut_InitialState, |
| michael@0 | 19 | }; |
| michael@0 | 20 | |
| michael@0 | 21 | /** |
| michael@0 | 22 | * This function takes a clip stack and a query rectangle and it produces a reduced set of |
| michael@0 | 23 | * SkClipStack::Elements that are equivalent to applying the full stack to the rectangle. The clip |
| michael@0 | 24 | * stack generation id that represents the list of elements is returned in resultGenID. The |
| michael@0 | 25 | * initial state of the query rectangle before the first clip element is applied is returned via |
| michael@0 | 26 | * initialState. Optionally, the caller can request a tighter bounds on the clip be returned via |
| michael@0 | 27 | * tighterBounds. If not NULL, tighterBounds will always be contained by queryBounds after return. |
| michael@0 | 28 | * If tighterBounds is specified then it is assumed that the caller will implicitly clip against it. |
| michael@0 | 29 | * If the caller specifies non-NULL for requiresAA then it will indicate whether anti-aliasing is |
| michael@0 | 30 | * required to process any of the elements in the result. |
| michael@0 | 31 | * |
| michael@0 | 32 | * This may become a member function of SkClipStack when its interface is determined to be stable. |
| michael@0 | 33 | * Marked SK_API so that SkLua can call this in a shared library build. |
| michael@0 | 34 | */ |
| michael@0 | 35 | SK_API void ReduceClipStack(const SkClipStack& stack, |
| michael@0 | 36 | const SkIRect& queryBounds, |
| michael@0 | 37 | ElementList* result, |
| michael@0 | 38 | int32_t* resultGenID, |
| michael@0 | 39 | InitialState* initialState, |
| michael@0 | 40 | SkIRect* tighterBounds = NULL, |
| michael@0 | 41 | bool* requiresAA = NULL); |
| michael@0 | 42 | |
| michael@0 | 43 | } // namespace GrReducedClip |
