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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 "GrRenderTargetOpList.h"
#include "GrRenderTargetPriv.h"
#include "GrTextureProvider.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)
: INHERITED(desc, fit, budgeted)
, fFlags(GrRenderTarget::Flags::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() && fDesc.fSampleCnt > 0) {
fFlags |= GrRenderTarget::Flags::kMixedSampled;
}
if (caps.maxWindowRectangles() > 0) {
fFlags |= GrRenderTarget::Flags::kWindowRectsSupport;
}
}
// Wrapped version
GrRenderTargetProxy::GrRenderTargetProxy(sk_sp<GrRenderTarget> rt)
: INHERITED(std::move(rt), SkBackingFit::kExact)
, fFlags(fTarget->asRenderTarget()->renderTargetPriv().flags()) {
}
GrRenderTarget* GrRenderTargetProxy::instantiate(GrTextureProvider* texProvider) {
if (fTarget) {
return fTarget->asRenderTarget();
}
// TODO: it would be nice to not have to copy the desc here
GrSurfaceDesc desc = fDesc;
desc.fFlags |= GrSurfaceFlags::kRenderTarget_GrSurfaceFlag;
if (SkBackingFit::kApprox == fFit) {
fTarget = texProvider->createApproxTexture(desc);
} else {
fTarget = texProvider->createTexture(desc, fBudgeted);
}
if (!fTarget) {
return nullptr;
}
#ifdef SK_DEBUG
if (kInvalidGpuMemorySize != fGpuMemorySize) {
SkASSERT(fTarget->gpuMemorySize() <= fGpuMemorySize);
}
#endif
// Check that our a priori computation matched the ultimate reality
SkASSERT(fFlags == fTarget->asRenderTarget()->renderTargetPriv().flags());
return fTarget->asRenderTarget();
}
#ifdef SK_DEBUG
void GrRenderTargetProxy::validate(GrContext* context) const {
if (fTarget) {
SkASSERT(fTarget->getContext() == context);
}
INHERITED::validate();
}
#endif
size_t GrRenderTargetProxy::onGpuMemorySize() const {
if (fTarget) {
return fTarget->gpuMemorySize();
}
SkASSERT(kUnknown_GrPixelConfig != fDesc.fConfig);
SkASSERT(!GrPixelConfigIsCompressed(fDesc.fConfig));
size_t colorBytes = GrBytesPerPixel(fDesc.fConfig);
SkASSERT(colorBytes > 0);
// TODO: do we have enough information to improve this worst case estimate?
return (fDesc.fSampleCnt + 1) * fDesc.fWidth * fDesc.fHeight * colorBytes;
}
sk_sp<GrRenderTargetProxy> GrRenderTargetProxy::Make(const GrCaps& caps,
const GrSurfaceDesc& desc,
SkBackingFit fit,
SkBudgeted budgeted) {
return sk_sp<GrRenderTargetProxy>(new GrRenderTargetProxy(caps, desc, fit, budgeted));
}
sk_sp<GrRenderTargetProxy> GrRenderTargetProxy::Make(sk_sp<GrRenderTarget> rt) {
return sk_sp<GrRenderTargetProxy>(new GrRenderTargetProxy(rt));
}
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