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* Copyright 2016 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#ifndef GrOpList_DEFINED
#define GrOpList_DEFINED
#include "GrColor.h"
#include "GrSurfaceProxyRef.h"
#include "GrTextureProxy.h"
#include "SkRefCnt.h"
#include "SkTDArray.h"
// Turn on/off the explicit distribution of GPU resources at flush time
// Turn on/off the sorting of opLists at flush time
class GrAuditTrail;
class GrCaps;
class GrOpFlushState;
class GrRenderTargetOpList;
class GrResourceAllocator;
class GrResourceProvider;
class GrSurfaceProxy;
class GrTextureOpList;
struct SkIPoint;
struct SkIRect;
class GrOpList : public SkRefCnt {
GrOpList(GrResourceProvider*, GrSurfaceProxy*, GrAuditTrail*);
~GrOpList() override;
// These four methods are invoked at flush time
bool instantiate(GrResourceProvider* resourceProvider);
// Instantiates any "threaded" texture proxies that are being prepared elsewhere
void instantiateDeferredProxies(GrResourceProvider* resourceProvider);
void prepare(GrOpFlushState* flushState);
bool execute(GrOpFlushState* flushState) { return this->onExecute(flushState); }
virtual bool copySurface(const GrCaps& caps,
GrSurfaceProxy* dst,
GrSurfaceProxy* src,
const SkIRect& srcRect,
const SkIPoint& dstPoint) = 0;
virtual void makeClosed(const GrCaps&) {
if (!this->isClosed()) {
// Called when this class will survive a flush and needs to truncate its ops and start over.
// TODO: ultimately it should be invalid for an op list to survive a flush.
virtual void endFlush();
bool isClosed() const { return this->isSetFlag(kClosed_Flag); }
* Notify this GrOpList that it relies on the contents of 'dependedOn'
void addDependency(GrSurfaceProxy* dependedOn, const GrCaps& caps);
* Does this opList depend on 'dependedOn'?
bool dependsOn(GrOpList* dependedOn) const {
for (int i = 0; i < fDependencies.count(); ++i) {
if (fDependencies[i] == dependedOn) {
return true;
return false;
* Safely cast this GrOpList to a GrTextureOpList (if possible).
virtual GrTextureOpList* asTextureOpList() { return nullptr; }
* Safely case this GrOpList to a GrRenderTargetOpList (if possible).
virtual GrRenderTargetOpList* asRenderTargetOpList() { return nullptr; }
uint32_t uniqueID() const { return fUniqueID; }
* Dump out the GrOpList dependency DAG
SkDEBUGCODE(virtual void dump() const;)
SkDEBUGCODE(virtual int numOps() const = 0;)
SkDEBUGCODE(virtual int numClips() const { return 0; })
// TODO: it would be nice for this to be hidden
void setStencilLoadOp(GrLoadOp loadOp) { fStencilLoadOp = loadOp; }
SkDEBUGCODE(bool isInstantiated() const;)
GrSurfaceProxyRef fTarget;
GrAuditTrail* fAuditTrail;
GrLoadOp fColorLoadOp = GrLoadOp::kLoad;
GrColor fLoadClearColor = 0x0;
GrLoadOp fStencilLoadOp = GrLoadOp::kLoad;
// List of texture proxies whose contents are being prepared on a worker thread
SkTArray<GrTextureProxy*, true> fDeferredProxies;
friend class GrDrawingManager; // for resetFlag, TopoSortTraits & gatherProxyIntervals
// Remove all Ops which reference proxies that have not been instantiated.
virtual void purgeOpsWithUninstantiatedProxies() = 0;
// Feed proxy usage intervals to the GrResourceAllocator class
virtual void gatherProxyIntervals(GrResourceAllocator*) const = 0;
static uint32_t CreateUniqueID();
enum Flags {
kClosed_Flag = 0x01, //!< This GrOpList can't accept any more ops
kWasOutput_Flag = 0x02, //!< Flag for topological sorting
kTempMark_Flag = 0x04, //!< Flag for topological sorting
void setFlag(uint32_t flag) {
fFlags |= flag;
void resetFlag(uint32_t flag) {
fFlags &= ~flag;
bool isSetFlag(uint32_t flag) const {
return SkToBool(fFlags & flag);
struct TopoSortTraits {
static void Output(GrOpList* dt, int /* index */) {
static bool WasOutput(const GrOpList* dt) {
return dt->isSetFlag(GrOpList::kWasOutput_Flag);
static void SetTempMark(GrOpList* dt) {
static void ResetTempMark(GrOpList* dt) {
static bool IsTempMarked(const GrOpList* dt) {
return dt->isSetFlag(GrOpList::kTempMark_Flag);
static int NumDependencies(const GrOpList* dt) {
return dt->fDependencies.count();
static GrOpList* Dependency(GrOpList* dt, int index) {
return dt->fDependencies[index];
virtual void onPrepare(GrOpFlushState* flushState) = 0;
virtual bool onExecute(GrOpFlushState* flushState) = 0;
void addDependency(GrOpList* dependedOn);
uint32_t fUniqueID;
uint32_t fFlags;
// 'this' GrOpList relies on the output of the GrOpLists in 'fDependencies'
SkSTArray<1, GrOpList*, true> fDependencies;
typedef SkRefCnt INHERITED;