csmartdalton | 02fa32c | 2016-08-19 13:29:27 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #ifndef GrFixedClip_DEFINED |
| 9 | #define GrFixedClip_DEFINED |
| 10 | |
| 11 | #include "GrClip.h" |
| 12 | #include "GrTypesPriv.h" |
| 13 | |
| 14 | /** |
| 15 | * GrFixedClip is a clip that can be represented by fixed-function hardware. It never modifies the |
| 16 | * stencil buffer itself, but can be configured to use whatever clip is already there. |
| 17 | */ |
| 18 | class GrFixedClip final : public GrClip { |
| 19 | public: |
| 20 | GrFixedClip() : fHasStencilClip(false) {} |
| 21 | GrFixedClip(const SkIRect& scissorRect) |
| 22 | : fScissorState(scissorRect) |
| 23 | , fHasStencilClip(false) {} |
| 24 | |
| 25 | void reset() { |
| 26 | fScissorState.setDisabled(); |
| 27 | fHasStencilClip = false; |
| 28 | } |
| 29 | |
| 30 | void reset(const SkIRect& scissorRect) { |
| 31 | fScissorState.set(scissorRect); |
| 32 | fHasStencilClip = false; |
| 33 | } |
| 34 | |
| 35 | void enableStencilClip() { fHasStencilClip = true; } |
| 36 | void disableStencilClip() { fHasStencilClip = false; } |
| 37 | |
| 38 | bool quickContains(const SkRect&) const final; |
| 39 | void getConservativeBounds(int width, int height, SkIRect* devResult, |
| 40 | bool* isIntersectionOfRects) const final; |
| 41 | |
| 42 | private: |
| 43 | bool apply(GrContext*, GrDrawContext*, bool useHWAA, bool hasUserStencilSettings, |
| 44 | GrAppliedClip* out) const final; |
| 45 | |
| 46 | GrScissorState fScissorState; |
| 47 | bool fHasStencilClip; |
| 48 | }; |
| 49 | |
| 50 | #endif |