Implement path cover with nv_path_rendering

src/gpu/GrInOrderDrawBuffer.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrInOrderDrawBuffer.h"
 
 #include "GrBufferAllocPool.h"
@@ skipping 367 matching lines @@
             default:
                 GrCrash("unknown geom src type");
         }
         draw->fIndexBuffer->ref();
     } else {
         draw->fIndexBuffer = NULL;
     }
 }
 
 GrInOrderDrawBuffer::StencilPath::StencilPath() : fStroke(SkStrokeRec::kFill_InitStyle) {}
+GrInOrderDrawBuffer::FillPath::FillPath() : fStroke(SkStrokeRec::kFill_InitStyle) {}
 
 void GrInOrderDrawBuffer::onStencilPath(const GrPath* path, const SkStrokeRec& stroke,
                                         SkPath::FillType fill) {
     if (this->needsNewClip()) {
         this->recordClip();
     }
     // Only compare the subset of GrDrawState relevant to path stenciling?
     if (this->needsNewState()) {
         this->recordState();
     }
     StencilPath* sp = this->recordStencilPath();
     sp->fPath.reset(path);
     path->ref();
     sp->fFill = fill;
     sp->fStroke = stroke;
 }
 
+void GrInOrderDrawBuffer::onFillPath(const GrPath* path, const SkStrokeRec& stroke,
+                                     SkPath::FillType fill, const GrDeviceCoordTexture* dstCopy) {
+    if (this->needsNewClip()) {
+        this->recordClip();
+    }
+    // TODO: Only compare the subset of GrDrawState relevant to path covering?
+    if (this->needsNewState()) {
+        this->recordState();
+    }
+    FillPath* cp = this->recordFillPath();
+    cp->fPath.reset(path);
+    path->ref();
+    cp->fFill = fill;
+    cp->fStroke = stroke;
+    if (NULL != dstCopy) {
+        cp->fDstCopy = *dstCopy;
+    }
+}
+
 void GrInOrderDrawBuffer::clear(const SkIRect* rect, GrColor color, GrRenderTarget* renderTarget) {
     SkIRect r;
     if (NULL == renderTarget) {
         renderTarget = this->drawState()->getRenderTarget();
         SkASSERT(NULL != renderTarget);
     }
     if (NULL == rect) {
         // We could do something smart and remove previous draws and clears to
         // the current render target. If we get that smart we have to make sure
         // those draws aren't read before this clear (render-to-texture).
@@ skipping 14 matching lines @@
     int numDraws = fDraws.count();
     for (int d = 0; d < numDraws; ++d) {
         // we always have a VB, but not always an IB
         SkASSERT(NULL != fDraws[d].fVertexBuffer);
         fDraws[d].fVertexBuffer->unref();
         SkSafeUnref(fDraws[d].fIndexBuffer);
     }
     fCmds.reset();
     fDraws.reset();
     fStencilPaths.reset();
+    fFillPaths.reset();
     fStates.reset();
     fClears.reset();
     fVertexPool.reset();
     fIndexPool.reset();
     fClips.reset();
     fClipOrigins.reset();
     fCopySurfaces.reset();
     fClipSet = true;
 }
 
@@ skipping 24 matching lines @@
     prevDrawState->ref();
     fDstGpu->setDrawState(&playbackState);
 
     GrClipData clipData;
 
     int currState       = 0;
     int currClip        = 0;
     int currClear       = 0;
     int currDraw        = 0;
     int currStencilPath = 0;
+    int currFillPath    = 0;
     int currCopySurface = 0;
 
     for (int c = 0; c < numCmds; ++c) {
         switch (fCmds[c]) {
             case kDraw_Cmd: {
                 const DrawRecord& draw = fDraws[currDraw];
                 fDstGpu->setVertexSourceToBuffer(draw.fVertexBuffer);
                 if (draw.isIndexed()) {
                     fDstGpu->setIndexSourceToBuffer(draw.fIndexBuffer);
                 }
                 fDstGpu->executeDraw(draw);
 
                 ++currDraw;
                 break;
             }
             case kStencilPath_Cmd: {
                 const StencilPath& sp = fStencilPaths[currStencilPath];
                 fDstGpu->stencilPath(sp.fPath.get(), sp.fStroke, sp.fFill);
                 ++currStencilPath;
                 break;
             }
+            case kFillPath_Cmd: {
+                const FillPath& cp = fFillPaths[currFillPath];
+                fDstGpu->executeFillPath(cp.fPath.get(), cp.fStroke, cp.fFill,
+                                         NULL != cp.fDstCopy.texture() ? &cp.fDstCopy : NULL);
+                ++currFillPath;
+                break;
+            }
             case kSetState_Cmd:
                 fStates[currState].restoreTo(&playbackState);
                 ++currState;
                 break;
             case kSetClip_Cmd:
                 clipData.fClipStack = &fClips[currClip];
                 clipData.fOrigin = fClipOrigins[currClip];
                 fDstGpu->setClip(&clipData);
                 ++currClip;
                 break;
@@ skipping 289 matching lines @@
 GrInOrderDrawBuffer::DrawRecord* GrInOrderDrawBuffer::recordDraw(const DrawInfo& info) {
     fCmds.push_back(kDraw_Cmd);
     return &fDraws.push_back(info);
 }
 
 GrInOrderDrawBuffer::StencilPath* GrInOrderDrawBuffer::recordStencilPath() {
     fCmds.push_back(kStencilPath_Cmd);
     return &fStencilPaths.push_back();
 }
 
+GrInOrderDrawBuffer::FillPath* GrInOrderDrawBuffer::recordFillPath() {
+    fCmds.push_back(kFillPath_Cmd);
+    return &fFillPaths.push_back();
+}
+
 GrInOrderDrawBuffer::Clear* GrInOrderDrawBuffer::recordClear() {
     fCmds.push_back(kClear_Cmd);
     return &fClears.push_back();
 }
 
 GrInOrderDrawBuffer::CopySurface* GrInOrderDrawBuffer::recordCopySurface() {
     fCmds.push_back(kCopySurface_Cmd);
     return &fCopySurfaces.push_back();
 }
 
 
 void GrInOrderDrawBuffer::clipWillBeSet(const GrClipData* newClipData) {
     INHERITED::clipWillBeSet(newClipData);
     fClipSet = true;
     fClipProxyState = kUnknown_ClipProxyState;
 }