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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrRenderTarget.h"
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrDrawContext.h"
#include "GrDrawTarget.h"
#include "GrGpu.h"
#include "GrRenderTargetPriv.h"
#include "GrStencilAttachment.h"
GrRenderTarget::GrRenderTarget(GrGpu* gpu, const GrSurfaceDesc& desc, Flags flags,
GrStencilAttachment* stencil)
: INHERITED(gpu, desc)
, fStencilAttachment(stencil)
, fMultisampleSpecsID(0)
, fFlags(flags)
, fLastDrawTarget(nullptr) {
SkASSERT(!(fFlags & Flags::kMixedSampled) || fDesc.fSampleCnt > 0);
SkASSERT(!(fFlags & Flags::kWindowRectsSupport) || gpu->caps()->maxWindowRectangles() > 0);
fResolveRect.setLargestInverted();
}
GrRenderTarget::~GrRenderTarget() {
if (fLastDrawTarget) {
fLastDrawTarget->clearRT();
}
SkSafeUnref(fLastDrawTarget);
}
void GrRenderTarget::discard() {
// go through context so that all necessary flushing occurs
GrContext* context = this->getContext();
if (!context) {
return;
}
sk_sp<GrDrawContext> drawContext(context->contextPriv().makeWrappedDrawContext(sk_ref_sp(this),
nullptr));
if (!drawContext) {
return;
}
drawContext->discard();
}
void GrRenderTarget::flagAsNeedingResolve(const SkIRect* rect) {
if (kCanResolve_ResolveType == getResolveType()) {
if (rect) {
fResolveRect.join(*rect);
if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
fResolveRect.setEmpty();
}
} else {
fResolveRect.setLTRB(0, 0, this->width(), this->height());
}
}
}
void GrRenderTarget::overrideResolveRect(const SkIRect rect) {
fResolveRect = rect;
if (fResolveRect.isEmpty()) {
fResolveRect.setLargestInverted();
} else {
if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
fResolveRect.setLargestInverted();
}
}
}
void GrRenderTarget::onRelease() {
SkSafeSetNull(fStencilAttachment);
INHERITED::onRelease();
}
void GrRenderTarget::onAbandon() {
SkSafeSetNull(fStencilAttachment);
// The contents of this renderTarget are gone/invalid. It isn't useful to point back
// the creating drawTarget.
this->setLastDrawTarget(nullptr);
INHERITED::onAbandon();
}
void GrRenderTarget::setLastDrawTarget(GrDrawTarget* dt) {
if (fLastDrawTarget) {
// The non-MDB world never closes so we can't check this condition
#ifdef ENABLE_MDB
SkASSERT(fLastDrawTarget->isClosed());
#endif
fLastDrawTarget->clearRT();
}
SkRefCnt_SafeAssign(fLastDrawTarget, dt);
}
///////////////////////////////////////////////////////////////////////////////
bool GrRenderTargetPriv::attachStencilAttachment(GrStencilAttachment* stencil) {
if (!stencil && !fRenderTarget->fStencilAttachment) {
// No need to do any work since we currently don't have a stencil attachment and
// we're not acctually adding one.
return true;
}
fRenderTarget->fStencilAttachment = stencil;
if (!fRenderTarget->completeStencilAttachment()) {
SkSafeSetNull(fRenderTarget->fStencilAttachment);
return false;
}
return true;
}
int GrRenderTargetPriv::numStencilBits() const {
return fRenderTarget->fStencilAttachment ? fRenderTarget->fStencilAttachment->bits() : 0;
}
const GrGpu::MultisampleSpecs&
GrRenderTargetPriv::getMultisampleSpecs(const GrStencilSettings& stencil) const {
return fRenderTarget->getGpu()->getMultisampleSpecs(fRenderTarget, stencil);
}
int GrRenderTargetPriv::maxWindowRectangles() const {
return (this->flags() & Flags::kWindowRectsSupport) ?
fRenderTarget->getGpu()->caps()->maxWindowRectangles() : 0;
}
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