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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 "GrRenderTargetProxy.h"
#include "GrCaps.h"
#include "GrGpuResourcePriv.h"
#include "GrRenderTargetOpList.h"
#include "GrRenderTargetPriv.h"
#include "GrResourceProvider.h"
#include "GrTextureRenderTargetProxy.h"
#include "SkMathPriv.h"
// Deferred version
// TODO: we can probably munge the 'desc' in both the wrapped and deferred
// cases to make the sampleConfig/numSamples stuff more rational.
GrRenderTargetProxy::GrRenderTargetProxy(const GrCaps& caps, const GrSurfaceDesc& desc,
SkBackingFit fit, SkBudgeted budgeted, uint32_t flags)
: INHERITED(desc, fit, budgeted, flags)
, fSampleCnt(desc.fSampleCnt)
, fNeedsStencil(false)
, fRenderTargetFlags(GrRenderTargetFlags::kNone) {
// Since we know the newly created render target will be internal, we are able to precompute
// what the flags will ultimately end up being.
if (caps.usesMixedSamples() && fSampleCnt > 0) {
fRenderTargetFlags |= GrRenderTargetFlags::kMixedSampled;
}
if (caps.maxWindowRectangles() > 0) {
fRenderTargetFlags |= GrRenderTargetFlags::kWindowRectsSupport;
}
}
// Wrapped version
GrRenderTargetProxy::GrRenderTargetProxy(sk_sp<GrSurface> surf, GrSurfaceOrigin origin)
: INHERITED(std::move(surf), origin, SkBackingFit::kExact)
, fSampleCnt(fTarget->asRenderTarget()->numStencilSamples())
, fNeedsStencil(false)
, fRenderTargetFlags(fTarget->asRenderTarget()->renderTargetPriv().flags()) {
}
int GrRenderTargetProxy::maxWindowRectangles(const GrCaps& caps) const {
return (fRenderTargetFlags & GrRenderTargetFlags::kWindowRectsSupport)
? caps.maxWindowRectangles()
: 0;
}
bool GrRenderTargetProxy::instantiate(GrResourceProvider* resourceProvider) {
static constexpr GrSurfaceFlags kFlags = kRenderTarget_GrSurfaceFlag;
if (!this->instantiateImpl(resourceProvider, fSampleCnt, fNeedsStencil, kFlags,
/* isMipped = */ false,
SkDestinationSurfaceColorMode::kLegacy, nullptr)) {
return false;
}
SkASSERT(fTarget->asRenderTarget());
// Check that our a priori computation matched the ultimate reality
SkASSERT(fRenderTargetFlags == fTarget->asRenderTarget()->renderTargetPriv().flags());
return true;
}
sk_sp<GrSurface> GrRenderTargetProxy::createSurface(GrResourceProvider* resourceProvider) const {
static constexpr GrSurfaceFlags kFlags = kRenderTarget_GrSurfaceFlag;
sk_sp<GrSurface> surface = this->createSurfaceImpl(resourceProvider, fSampleCnt, fNeedsStencil,
kFlags, /* isMipped = */ false,
SkDestinationSurfaceColorMode::kLegacy);
if (!surface) {
return nullptr;
}
SkASSERT(surface->asRenderTarget());
// Check that our a priori computation matched the ultimate reality
SkASSERT(fRenderTargetFlags == surface->asRenderTarget()->renderTargetPriv().flags());
return surface;
}
int GrRenderTargetProxy::worstCaseWidth() const {
if (fTarget) {
return fTarget->width();
}
if (SkBackingFit::kExact == fFit) {
return fWidth;
}
return SkTMax(GrResourceProvider::kMinScratchTextureSize, GrNextPow2(fWidth));
}
int GrRenderTargetProxy::worstCaseHeight() const {
if (fTarget) {
return fTarget->height();
}
if (SkBackingFit::kExact == fFit) {
return fHeight;
}
return SkTMax(GrResourceProvider::kMinScratchTextureSize, GrNextPow2(fHeight));
}
size_t GrRenderTargetProxy::onUninstantiatedGpuMemorySize() const {
int colorSamplesPerPixel = this->numColorSamples() + 1;
// TODO: do we have enough information to improve this worst case estimate?
return GrSurface::ComputeSize(fConfig, fWidth, fHeight, colorSamplesPerPixel, false,
SkBackingFit::kApprox == fFit);
}
bool GrRenderTargetProxy::refsWrappedObjects() const {
if (!fTarget) {
return false;
}
return fTarget->resourcePriv().refsWrappedObjects();
}
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