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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 "GrContext.h"
#include "GrDeferredProxyUploader.h"
#include "GrMemoryPool.h"
#include "GrSurfaceProxy.h"
#include "GrTextureProxyPriv.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(GrResourceProvider* resourceProvider, sk_sp<GrOpMemoryPool> opMemoryPool,
GrSurfaceProxy* surfaceProxy, GrAuditTrail* auditTrail)
: fOpMemoryPool(std::move(opMemoryPool))
, fAuditTrail(auditTrail)
, fUniqueID(CreateUniqueID())
, fFlags(0) {
SkASSERT(fOpMemoryPool);
fTarget.setProxy(sk_ref_sp(surfaceProxy), kWrite_GrIOType);
fTarget.get()->setLastOpList(this);
if (resourceProvider && !resourceProvider->explicitlyAllocateGPUResources()) {
// MDB TODO: remove this! We are currently moving to having all the ops that target
// the RT as a dest (e.g., clear, etc.) rely on the opList's 'fTarget' pointer
// for the IO Ref. This works well but until they are all swapped over (and none
// are pre-emptively instantiating proxies themselves) we need to instantiate
// here so that the GrSurfaces are created in an order that preserves the GrSurface
// re-use assumptions.
fTarget.get()->instantiate(resourceProvider);
}
fTarget.markPendingIO();
}
GrOpList::~GrOpList() {
if (fTarget.get() && this == fTarget.get()->getLastOpList()) {
// Ensure the target proxy doesn't keep hold of a dangling back pointer.
fTarget.get()->setLastOpList(nullptr);
}
}
bool GrOpList::instantiate(GrResourceProvider* resourceProvider) {
return SkToBool(fTarget.get()->instantiate(resourceProvider));
}
void GrOpList::endFlush() {
if (fTarget.get() && this == fTarget.get()->getLastOpList()) {
fTarget.get()->setLastOpList(nullptr);
}
fTarget.reset();
fDeferredProxies.reset();
fAuditTrail = nullptr;
}
void GrOpList::instantiateDeferredProxies(GrResourceProvider* resourceProvider) {
for (int i = 0; i < fDeferredProxies.count(); ++i) {
if (resourceProvider->explicitlyAllocateGPUResources()) {
SkASSERT(fDeferredProxies[i]->priv().isInstantiated());
} else {
fDeferredProxies[i]->instantiate(resourceProvider);
}
}
}
void GrOpList::prepare(GrOpFlushState* flushState) {
for (int i = 0; i < fDeferredProxies.count(); ++i) {
fDeferredProxies[i]->texPriv().scheduleUpload(flushState);
}
this->onPrepare(flushState);
}
// 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_back(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. We can't make it closed in the self-read case.
} else {
this->addDependency(opList);
// We are closing 'opList' here bc the current contents of it are what 'this' opList
// depends on. We need a break in 'opList' so that the usage of that state has a
// chance to execute.
opList->makeClosed(caps);
}
}
if (GrTextureProxy* textureProxy = dependedOn->asTextureProxy()) {
if (textureProxy->texPriv().isDeferred()) {
fDeferredProxies.push_back(textureProxy);
}
}
}
bool GrOpList::dependsOn(const GrOpList* dependedOn) const {
for (int i = 0; i < fDependencies.count(); ++i) {
if (fDependencies[i] == dependedOn) {
return true;
}
}
return false;
}
bool GrOpList::isInstantiated() const {
return fTarget.get()->priv().isInstantiated();
}
#ifdef SK_DEBUG
static const char* op_to_name(GrLoadOp op) {
return GrLoadOp::kLoad == op ? "load" : GrLoadOp::kClear == op ? "clear" : "discard";
}
void GrOpList::dump(bool printDependencies) const {
SkDebugf("--------------------------------------------------------------\n");
SkDebugf("opListID: %d - proxyID: %d - surfaceID: %d\n", fUniqueID,
fTarget.get() ? fTarget.get()->uniqueID().asUInt() : -1,
fTarget.get() && fTarget.get()->priv().peekSurface()
? fTarget.get()->priv().peekSurface()->uniqueID().asUInt() : -1);
SkDebugf("ColorLoadOp: %s %x StencilLoadOp: %s\n",
op_to_name(fColorLoadOp),
GrLoadOp::kClear == fColorLoadOp ? fLoadClearColor : 0x0,
op_to_name(fStencilLoadOp));
if (printDependencies) {
SkDebugf("I rely On (%d): ", fDependencies.count());
for (int i = 0; i < fDependencies.count(); ++i) {
SkDebugf("%d, ", fDependencies[i]->fUniqueID);
}
SkDebugf("\n");
}
}
#endif
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