Scissor rect on drawinfo

src/gpu/GrClipMaskManager.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrClipMaskManager.h"
 #include "GrAAConvexPathRenderer.h"
@@ skipping 193 matching lines @@
         are->set(NULL);
     }
 
     return !failed;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // sort out what kind of clip mask needs to be created: alpha, stencil,
 // scissor, or entirely software
 bool GrClipMaskManager::setupClipping(const GrClipData* clipDataIn,
+                                      const SkRect* devBounds,
                                       GrDrawState::AutoRestoreEffects* are,
-                                      GrDrawState::AutoRestoreStencil* asr,
-                                      const SkRect* devBounds) {
+                                      GrDrawState::AutoRestoreStencil* ars,
+                                      GrDrawTarget::ScissorState* scissorState) {
     fCurrClipMaskType = kNone_ClipMaskType;
 
     GrReducedClip::ElementList elements(16);
     int32_t genID;
     GrReducedClip::InitialState initialState;
     SkIRect clipSpaceIBounds;
     bool requiresAA;
 
     GrDrawState* drawState = fGpu->drawState();
 
@@ skipping 15 matching lines @@
         if (elements.isEmpty()) {
             if (GrReducedClip::kAllIn_InitialState == initialState) {
                 ignoreClip = clipSpaceIBounds == clipSpaceRTIBounds;
             } else {
                 return false;
             }
         }
     }
 
     if (ignoreClip) {
-        fGpu->disableScissor();
-        this->setDrawStateStencil(asr);
+        this->setDrawStateStencil(ars);
         return true;
     }
 
     // An element count of 4 was chosen because of the common pattern in Blink of:
     //   isect RR
     //   diff  RR
     //   isect convex_poly
     //   isect convex_poly
     // when drawing rounded div borders. This could probably be tuned based on a
     // configuration's relative costs of switching RTs to generate a mask vs
     // longer shaders.
     if (elements.count() <= 4) {
         SkVector clipToRTOffset = { SkIntToScalar(-clipDataIn->fOrigin.fX),
                                     SkIntToScalar(-clipDataIn->fOrigin.fY) };
         if (elements.isEmpty() ||
             (requiresAA && this->installClipEffects(elements, are, clipToRTOffset, devBounds))) {
             SkIRect scissorSpaceIBounds(clipSpaceIBounds);
             scissorSpaceIBounds.offset(-clipDataIn->fOrigin);
             if (NULL == devBounds ||
                 !SkRect::Make(scissorSpaceIBounds).contains(*devBounds)) {
-                fGpu->enableScissor(scissorSpaceIBounds);
-            } else {
-                fGpu->disableScissor();
+                scissorState->set(scissorSpaceIBounds);
             }
-            this->setDrawStateStencil(asr);
+            this->setDrawStateStencil(ars);
             return true;
         }
     }
 
 #if GR_AA_CLIP
     // If MSAA is enabled we can do everything in the stencil buffer.
     if (0 == rt->numSamples() && requiresAA) {
         GrTexture* result = NULL;
 
         if (this->useSWOnlyPath(elements)) {
@@ skipping 10 matching lines @@
                                                clipSpaceIBounds);
         }
 
         if (result) {
             // The mask's top left coord should be pinned to the rounded-out top left corner of
             // clipSpace bounds. We determine the mask's position WRT to the render target here.
             SkIRect rtSpaceMaskBounds = clipSpaceIBounds;
             rtSpaceMaskBounds.offset(-clipDataIn->fOrigin);
             are->set(fGpu->drawState());
             setup_drawstate_aaclip(fGpu, result, rtSpaceMaskBounds);
-            fGpu->disableScissor();
-            this->setDrawStateStencil(asr);
+            this->setDrawStateStencil(ars);
             return true;
         }
         // if alpha clip mask creation fails fall through to the non-AA code paths
     }
 #endif // GR_AA_CLIP
 
     // Either a hard (stencil buffer) clip was explicitly requested or an anti-aliased clip couldn't
     // be created. In either case, free up the texture in the anti-aliased mask cache.
     // TODO: this may require more investigation. Ganesh performs a lot of utility draws (e.g.,
     // clears, InOrderDrawBuffer playbacks) that hit the stencil buffer path. These may be
     // "incorrectly" clearing the AA cache.
     fAACache.reset();
 
     // use the stencil clip if we can't represent the clip as a rectangle.
     SkIPoint clipSpaceToStencilSpaceOffset = -clipDataIn->fOrigin;
     this->createStencilClipMask(genID,
                                 initialState,
                                 elements,
                                 clipSpaceIBounds,
                                 clipSpaceToStencilSpaceOffset);
 
     // This must occur after createStencilClipMask. That function may change the scissor. Also, it
     // only guarantees that the stencil mask is correct within the bounds it was passed, so we must
     // use both stencil and scissor test to the bounds for the final draw.
     SkIRect scissorSpaceIBounds(clipSpaceIBounds);
     scissorSpaceIBounds.offset(clipSpaceToStencilSpaceOffset);
-    fGpu->enableScissor(scissorSpaceIBounds);
-    this->setDrawStateStencil(asr);
+    scissorState->set(scissorSpaceIBounds);
+    this->setDrawStateStencil(ars);
     return true;
 }
 
 #define VISUALIZE_COMPLEX_CLIP 0
 
 #if VISUALIZE_COMPLEX_CLIP
     #include "SkRandom.h"
     SkRandom gRandom;
     #define SET_RANDOM_COLOR drawState->setColor(0xff000000 | gRandom.nextU());
 #else
@@ skipping 785 matching lines @@
 
     // TODO: dynamically attach a stencil buffer
     int stencilBits = 0;
     GrStencilBuffer* stencilBuffer =
         drawState.getRenderTarget()->getStencilBuffer();
     if (stencilBuffer) {
         stencilBits = stencilBuffer->bits();
         this->adjustStencilParams(settings, clipMode, stencilBits);
     }
 }