7 files changed, 21 insertions, 10 deletions
diff --git a/src/gpu/GrDrawingManager.cpp b/src/gpu/GrDrawingManager.cpp
index bbcd8a85d9..8d9e238f95 100644
--- a/src/gpu/GrDrawingManager.cpp
+++ b/src/gpu/GrDrawingManager.cpp
@@ -11,6 +11,7 @@
 #include "GrContext.h"
 #include "GrGpu.h"
 #include "GrOnFlushResourceProvider.h"
+#include "GrOpList.h"
 #include "GrRenderTargetContext.h"
 #include "GrPathRenderingRenderTargetContext.h"
 #include "GrRenderTargetProxy.h"
@@ -120,7 +121,7 @@ GrSemaphoresSubmitted GrDrawingManager::internalFlush(GrSurfaceProxy*,
     }
 #endif
 
-#ifdef ENABLE_MDB
+#ifdef ENABLE_MDB_SORT
     SkDEBUGCODE(bool result =)
                         SkTTopoSort<GrOpList, GrOpList::TopoSortTraits>(&fOpLists);
     SkASSERT(result);
diff --git a/src/gpu/GrOpList.h b/src/gpu/GrOpList.h
index ef21a24f46..c801f96375 100644
--- a/src/gpu/GrOpList.h
+++ b/src/gpu/GrOpList.h
@@ -13,7 +13,12 @@
 #include "SkRefCnt.h"
 #include "SkTDArray.h"
 
-//#define ENABLE_MDB 1
+
+// Turn on/off the explicit distribution of GPU resources at flush time
+//#define MDB_ALLOC_RESOURCES 1
+
+// Turn on/off the sorting of opLists at flush time
+//#define ENABLE_MDB_SORT 1
 
 class GrAuditTrail;
 class GrCaps;
diff --git a/src/gpu/GrRenderTargetContext.cpp b/src/gpu/GrRenderTargetContext.cpp
index 4f1ad1279e..cd2d099738 100644
--- a/src/gpu/GrRenderTargetContext.cpp
+++ b/src/gpu/GrRenderTargetContext.cpp
@@ -15,6 +15,7 @@
 #include "GrDrawingManager.h"
 #include "GrFixedClip.h"
 #include "GrGpuResourcePriv.h"
+#include "GrOpList.h"
 #include "GrPathRenderer.h"
 #include "GrRenderTarget.h"
 #include "GrRenderTargetContextPriv.h"
diff --git a/src/gpu/GrRenderTargetOpList.cpp b/src/gpu/GrRenderTargetOpList.cpp
index 1ae35bf2cc..a53a84ca5f 100644
--- a/src/gpu/GrRenderTargetOpList.cpp
+++ b/src/gpu/GrRenderTargetOpList.cpp
@@ -247,11 +247,8 @@ bool GrRenderTargetOpList::copySurface(const GrCaps& caps,
     if (!op) {
         return false;
     }
-#ifdef ENABLE_MDB
-    this->addDependency(src);
-#endif
 
-    this->recordOp(std::move(op), caps);
+    this->addOp(std::move(op), caps);
     return true;
 }
 
diff --git a/src/gpu/GrRenderTargetOpList.h b/src/gpu/GrRenderTargetOpList.h
index d80f667655..55fc904839 100644
--- a/src/gpu/GrRenderTargetOpList.h
+++ b/src/gpu/GrRenderTargetOpList.h
@@ -74,7 +74,7 @@ public:
 
         op->visitProxies(addDependency);
 
-        this->recordOp(std::move(op), caps, nullptr, nullptr);
+        this->recordOp(std::move(op), caps);
 
         return this->uniqueID();
     }
diff --git a/src/gpu/GrTextureOpList.cpp b/src/gpu/GrTextureOpList.cpp
index b046e7c272..e5fbb20bf2 100644
--- a/src/gpu/GrTextureOpList.cpp
+++ b/src/gpu/GrTextureOpList.cpp
@@ -98,9 +98,11 @@ bool GrTextureOpList::copySurface(const GrCaps& caps,
     if (!op) {
         return false;
     }
-#ifdef ENABLE_MDB
-    this->addDependency(src);
-#endif
+
+    auto addDependency = [ &caps, this ] (GrSurfaceProxy* p) {
+        this->addDependency(p, caps);
+    };
+    op->visitProxies(addDependency);
 
     this->recordOp(std::move(op));
     return true;
diff --git a/src/gpu/ops/GrCopySurfaceOp.h b/src/gpu/ops/GrCopySurfaceOp.h
index 57548a8268..7debfcd6a9 100644
--- a/src/gpu/ops/GrCopySurfaceOp.h
+++ b/src/gpu/ops/GrCopySurfaceOp.h
@@ -21,6 +21,11 @@ public:
 
     const char* name() const override { return "CopySurface"; }
 
+    void visitProxies(VisitProxyFunc func) const override {
+        func(fDst.get());
+        func(fSrc.get());
+    }
+
     SkString dumpInfo() const override {
         SkString string;
         string.append(INHERITED::dumpInfo());