Drawstate on stack

src/gpu/GrClipMaskManager.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
-
 #ifndef GrClipMaskManager_DEFINED
 #define GrClipMaskManager_DEFINED
 
 #include "GrClipMaskCache.h"
 #include "GrContext.h"
 #include "GrDrawState.h"
 #include "GrReducedClip.h"
 #include "GrStencil.h"
 #include "GrTexture.h"
-
 #include "SkClipStack.h"
 #include "SkDeque.h"
 #include "SkPath.h"
 #include "SkRefCnt.h"
 #include "SkTLList.h"
 #include "SkTypes.h"
 
 class GrClipTarget;
 class GrPathRenderer;
 class GrPathRendererChain;
 class GrTexture;
 class SkPath;
-
 /**
  * The clip mask creator handles the generation of the clip mask. If anti
  * aliasing is requested it will (in the future) generate a single channel
  * (8bit) mask. If no anti aliasing is requested it will generate a 1-bit
  * mask in the stencil buffer. In the non anti-aliasing case, if the clip
  * mask can be represented as a rectangle then scissoring is used. In all
  * cases scissoring is used to bound the range of the clip mask.
  */
 class GrClipMaskManager : SkNoncopyable {
 public:
@@ skipping 18 matching lines @@
         SkIRect fRect;
     };
 
     /**
      * Creates a clip mask if necessary as a stencil buffer or alpha texture
      * and sets the GrGpu's scissor and stencil state. If the return is false
      * then the draw can be skipped. The AutoRestoreEffects is initialized by
      * the manager when it must install additional effects to implement the
      * clip. devBounds is optional but can help optimize clipping.
      */
-    bool setupClipping(const GrClipData* clipDataIn,
-                       const SkRect* devBounds,
+    bool setupClipping(GrDrawState*,
                        GrDrawState::AutoRestoreEffects*,
                        GrDrawState::AutoRestoreStencil*,
-                       ScissorState*);
+                       ScissorState*,
+                       const GrClipData* clipDataIn,
+                       const SkRect* devBounds);
 
     /**
      * Purge resources to free up memory. TODO: This class shouldn't hold any long lived refs
      * which will allow ResourceCache2 to automatically purge anything this class has created.
      */
     void purgeResources();
 
     bool isClipInStencil() const {
         return kStencil_ClipMaskType == fCurrClipMaskType;
     }
+
     bool isClipInAlpha() const {
         return kAlpha_ClipMaskType == fCurrClipMaskType;
     }
 
     GrContext* getContext() {
         return fAACache.getContext();
     }
 
     void setClipTarget(GrClipTarget*);
 
-    void adjustPathStencilParams(GrStencilSettings*);
+    void adjustPathStencilParams(const GrStencilBuffer*, GrStencilSettings*);
 
 private:
     /**
      * Informs the helper function adjustStencilParams() about how the stencil
      * buffer clip is being used.
      */
     enum StencilClipMode {
         // Draw to the clip bit of the stencil buffer
         kModifyClip_StencilClipMode,
         // Clip against the existing representation of the clip in the high bit
         // of the stencil buffer.
         kRespectClip_StencilClipMode,
         // Neither writing to nor clipping against the clip bit.
         kIgnoreClip_StencilClipMode,
     };
 
     // Attempts to install a series of coverage effects to implement the clip. Return indicates
     // whether the element list was successfully converted to effects.
-    bool installClipEffects(const GrReducedClip::ElementList&,
+    bool installClipEffects(GrDrawState*,
                             GrDrawState::AutoRestoreEffects*,
+                            const GrReducedClip::ElementList&,
                             const SkVector& clipOffset,
                             const SkRect* devBounds);
 
     // Draws the clip into the stencil buffer
-    bool createStencilClipMask(int32_t elementsGenID,
+    bool createStencilClipMask(GrRenderTarget*,
+                               int32_t elementsGenID,
                                GrReducedClip::InitialState initialState,
                                const GrReducedClip::ElementList& elements,
                                const SkIRect& clipSpaceIBounds,
                                const SkIPoint& clipSpaceToStencilOffset);
+
     // Creates an alpha mask of the clip. The mask is a rasterization of elements through the
     // rect specified by clipSpaceIBounds.
     GrTexture* createAlphaClipMask(int32_t elementsGenID,
                                    GrReducedClip::InitialState initialState,
                                    const GrReducedClip::ElementList& elements,
                                    const SkIRect& clipSpaceIBounds);
+
     // Similar to createAlphaClipMask but it rasterizes in SW and uploads to the result texture.
     GrTexture* createSoftwareClipMask(int32_t elementsGenID,
                                       GrReducedClip::InitialState initialState,
                                       const GrReducedClip::ElementList& elements,
                                       const SkIRect& clipSpaceIBounds);
 
     // Returns the cached mask texture if it matches the elementsGenID and the clipSpaceIBounds.
     // Returns NULL if not found.
     GrTexture* getCachedMaskTexture(int32_t elementsGenID, const SkIRect& clipSpaceIBounds);
 
-
     // Handles allocation (if needed) of a clip alpha-mask texture for both the sw-upload
     // or gpu-rendered cases.
     GrTexture* allocMaskTexture(int32_t elementsGenID,
                                 const SkIRect& clipSpaceIBounds,
                                 bool willUpload);
 
-    bool useSWOnlyPath(const GrReducedClip::ElementList& elements);
+    bool useSWOnlyPath(const GrDrawState*, const GrReducedClip::ElementList& elements);
 
     // Draws a clip element into the target alpha mask. The caller should have already setup the
     // desired blend operation. Optionally if the caller already selected a path renderer it can
     // be passed. Otherwise the function will select one if the element is a path.
-    bool drawElement(GrTexture* target, const SkClipStack::Element*, GrPathRenderer* = NULL);
+    bool drawElement(GrDrawState*,
+                     GrTexture* target,
+                     const SkClipStack::Element*,
+                     GrPathRenderer* pr = NULL);
 
     // Determines whether it is possible to draw the element to both the stencil buffer and the
     // alpha mask simultaneously. If so and the element is a path a compatible path renderer is
     // also returned.
-    bool canStencilAndDrawElement(GrTexture* target, const SkClipStack::Element*, GrPathRenderer**);
+    bool canStencilAndDrawElement(GrDrawState*,
+                                  GrTexture* target,
+                                  GrPathRenderer**,
+                                  const SkClipStack::Element*);
 
-    void mergeMask(GrTexture* dstMask,
+    void mergeMask(GrDrawState*,
+                   GrTexture* dstMask,
                    GrTexture* srcMask,
                    SkRegion::Op op,
                    const SkIRect& dstBound,
                    const SkIRect& srcBound);
 
     GrTexture* createTempMask(int width, int height);
 
     void setupCache(const SkClipStack& clip,
                     const SkIRect& bounds);
-
     /**
      * Called prior to return control back the GrGpu in setupClipping. It
      * updates the GrGpu with stencil settings that account stencil-based
      * clipping.
      */
-    void setDrawStateStencil(GrDrawState::AutoRestoreStencil* asr);
+    void setDrawStateStencil(GrDrawState*, GrDrawState::AutoRestoreStencil*);
 
     /**
      * Adjusts the stencil settings to account for interaction with stencil
      * clipping.
      */
     void adjustStencilParams(GrStencilSettings* settings,
                              StencilClipMode mode,
                              int stencilBitCnt);
 
     /**
      * We may represent the clip as a mask in the stencil buffer or as an alpha
      * texture. It may be neither because the scissor rect suffices or we
      * haven't yet examined the clip.
      */
     enum ClipMaskType {
         kNone_ClipMaskType,
         kStencil_ClipMaskType,
         kAlpha_ClipMaskType,
     } fCurrClipMaskType;
 
     GrClipMaskCache fAACache;       // cache for the AA path
     GrClipTarget*   fClipTarget;
     StencilClipMode fClipMode;
 
     typedef SkNoncopyable INHERITED;
 };
-
 #endif // GrClipMaskManager_DEFINED