Refugee from Dead Machine 4: MDB Monster

src/gpu/GrDrawTarget.cpp

 
 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDrawTarget.h"
 
@@ skipping 12 matching lines @@
 #include "batches/GrClearBatch.h"
 #include "batches/GrCopySurfaceBatch.h"
 #include "batches/GrDiscardBatch.h"
 #include "batches/GrDrawBatch.h"
 #include "batches/GrDrawPathBatch.h"
 #include "batches/GrRectBatchFactory.h"
 #include "batches/GrStencilPathBatch.h"
 
 #include "SkStrokeRec.h"
 
+GrDrawTarget* getLastDT6(GrGpuResource* res) {
+    GrRenderTarget* rt = res->arrgh();
+    if (rt) {
+        return rt->getLastDrawTarget();
+    } else {
+        return nullptr;
+    }
+}
+
+void addRequiredDep(GrDrawTarget* dst, GrDrawTarget* src) {
+    dst->addRequiredDep(src);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
-
-GrDrawTarget::GrDrawTarget(GrRenderTarget* rt, GrGpu* gpu, GrResourceProvider* resourceProvider)
+GrDrawTarget::GrDrawTarget(GrRenderTarget* rt, GrGpu* gpu, GrResourceProvider* resourceProvider) 
     : fGpu(SkRef(gpu))
     , fResourceProvider(resourceProvider)
     , fFlushing(false)
     , fFlags(0)
     , fRenderTarget(rt) {
     // TODO: Stop extracting the context (currently needed by GrClipMaskManager)
     fContext = fGpu->getContext();
     fClipMaskManager.reset(new GrClipMaskManager(this));
 
 #ifdef SK_DEBUG
     static int debugID = 0;
     fDebugID = debugID++;
 #endif
 }
 
+void GrDrawTarget::checkUses() const {
+    for (int i = 0; i < fRequired.count(); ++i) {
+        SkASSERT(fDependencies.find(fRequired[i]) >= 0);
+    }
+    for (int i = 0; i < fDependencies.count(); ++i) {
+        SkASSERT(fRequired.find(fDependencies[i]) >= 0);
+    }
+}
+
+
 GrDrawTarget::~GrDrawTarget() {
+    // TODO: this seems like a reasonable assert
+    //SkASSERT(fClosed);
+
     if (fRenderTarget && this == fRenderTarget->getLastDrawTarget()) {
         fRenderTarget->setLastDrawTarget(nullptr);
     }
 
+    this->checkUses();
+
     fGpu->unref();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
 // Add a GrDrawTarget-based dependency
 void GrDrawTarget::addDependency(GrDrawTarget* dependedOn) {
     SkASSERT(!dependedOn->dependsOn(this));  // loops are bad
 
     if (this->dependsOn(dependedOn)) {
@@ skipping 104 matching lines @@
     this->copySurface(copy, rt, copyRect, dstPoint);
     dstTexture->setTexture(copy);
     dstTexture->setOffset(copyRect.fLeft, copyRect.fTop);
     return true;
 }
 
 void GrDrawTarget::prepareBatches(GrBatchFlushState* flushState) {
     if (fFlushing) {
         return;
     }
+
+    this->checkUses();
+
     fFlushing = true;
 
     // Semi-usually the drawTargets are already closed at this point, but sometimes Ganesh
     // needs to flush mid-draw. In that case, the SkGpuDevice's drawTargets won't be closed
     // but need to be flushed anyway. Closing such drawTargets here will mean new
     // drawTargets will be created to replace them if the SkGpuDevice(s) write to them again.
     this->makeClosed();
 
     // Loop over the batches that haven't yet generated their geometry
     for (int i = 0; i < fBatches.count(); ++i) {
@@ skipping 11 matching lines @@
 }
 
 void GrDrawTarget::reset() {
     fBatches.reset();
 }
 
 void GrDrawTarget::drawBatch(const GrPipelineBuilder& pipelineBuilder, GrDrawBatch* batch) {
     // Setup clip
     GrPipelineBuilder::AutoRestoreStencil ars;
     GrAppliedClip clip;
-    if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &batch->bounds(), &clip)) {
+    if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &batch->bounds(), &clip, fRenderTarget)) {
         return;
     }
     GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps;
     if (clip.clipCoverageFragmentProcessor()) {
         arfps.set(&pipelineBuilder);
         arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor());
     }
 
     GrPipeline::CreateArgs args;
     if (!this->installPipelineInDrawBatch(&pipelineBuilder, &clip.scissorState(), batch)) {
@@ skipping 47 matching lines @@
                                const SkMatrix& viewMatrix,
                                const GrPath* path,
                                GrPathRendering::FillType fill) {
     // TODO: extract portions of checkDraw that are relevant to path stenciling.
     SkASSERT(path);
     SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport());
 
     // Setup clip
     GrPipelineBuilder::AutoRestoreStencil ars;
     GrAppliedClip clip;
-    if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, nullptr, &clip)) {
+    if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, nullptr, &clip, fRenderTarget)) {
         return;
     }
 
     GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps;
     if (clip.clipCoverageFragmentProcessor()) {
         arfps.set(&pipelineBuilder);
         arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor());
     }
 
     // set stencil settings for path
@@ skipping 40 matching lines @@
 void GrDrawTarget::drawPathBatch(const GrPipelineBuilder& pipelineBuilder,
                                  GrDrawPathBatchBase* batch,
                                  GrPathRendering::FillType fill) {
     // This looks like drawBatch() but there is an added wrinkle that stencil settings get inserted
     // after setting up clipping but before onDrawBatch(). TODO: Figure out a better model for
     // handling stencil settings WRT interactions between pipeline(builder), clipmaskmanager, and
     // batches.
 
     GrPipelineBuilder::AutoRestoreStencil ars;
     GrAppliedClip clip;
-    if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &batch->bounds(), &clip)) {
+    if (!fClipMaskManager->setupClipping(pipelineBuilder, &ars, &batch->bounds(), &clip, fRenderTarget)) {
         return;
     }
 
     GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps;
     if (clip.clipCoverageFragmentProcessor()) {
         arfps.set(&pipelineBuilder);
         arfps.addCoverageFragmentProcessor(clip.clipCoverageFragmentProcessor());
     }
 
     // Ensure the render target has a stencil buffer and get the stencil settings.
@@ skipping 194 matching lines @@
     }
 
     return true;
 }
 
 void GrDrawTarget::clearStencilClip(const SkIRect& rect, bool insideClip, GrRenderTarget* rt) {
     GrBatch* batch = new GrClearStencilClipBatch(rect, insideClip, rt);
     this->recordBatch(batch);
     batch->unref();
 }