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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.
*/
#include "GrOpList.h"
#include "GrSurfaceProxy.h"
#include "SkAtomics.h"
uint32_t GrOpList::CreateUniqueID() {
static int32_t gUniqueID = SK_InvalidUniqueID;
uint32_t id;
// Loop in case our global wraps around, as we never want to return a 0.
do {
id = static_cast<uint32_t>(sk_atomic_inc(&gUniqueID) + 1);
} while (id == SK_InvalidUniqueID);
return id;
}
GrOpList::GrOpList(sk_sp<GrSurfaceProxy> surfaceProxy, GrAuditTrail* auditTrail)
// MDB TODO: in the future opLists will own the GrSurfaceProxy they target.
// For now, preserve the status quo.
: fTarget(surfaceProxy.get())
, fAuditTrail(auditTrail)
, fUniqueID(CreateUniqueID())
, fFlags(0) {
surfaceProxy->setLastOpList(this);
}
GrOpList::~GrOpList() {
if (fTarget && this == fTarget->getLastOpList()) {
fTarget->setLastOpList(nullptr);
}
}
// Add a GrOpList-based dependency
void GrOpList::addDependency(GrOpList* dependedOn) {
SkASSERT(!dependedOn->dependsOn(this)); // loops are bad
if (this->dependsOn(dependedOn)) {
return; // don't add duplicate dependencies
}
*fDependencies.push() = dependedOn;
}
// Convert from a GrSurface-based dependency to a GrOpList one
void GrOpList::addDependency(GrSurfaceProxy* dependedOn, const GrCaps& caps) {
if (dependedOn->getLastOpList()) {
// If it is still receiving dependencies, this GrOpList shouldn't be closed
SkASSERT(!this->isClosed());
GrOpList* opList = dependedOn->getLastOpList();
if (opList == this) {
// self-read - presumably for dst reads
} else {
this->addDependency(opList);
// Can't make it closed in the self-read case
opList->makeClosed(caps);
}
}
}
#ifdef SK_DEBUG
void GrOpList::dump() const {
SkDebugf("--------------------------------------------------------------\n");
SkDebugf("node: %d -> RT: %d\n", fUniqueID, fTarget ? fTarget->uniqueID().asUInt() : -1);
SkDebugf("relies On (%d): ", fDependencies.count());
for (int i = 0; i < fDependencies.count(); ++i) {
SkDebugf("%d, ", fDependencies[i]->fUniqueID);
}
SkDebugf("\n");
}
#endif
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