blob: 8fd61e9603f5df3fbc69e7f51818dceb9a478218 [file] [log] [blame]
* 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 "src/gpu/GrRenderTargetProxy.h"
#include "src/core/SkMathPriv.h"
#include "src/gpu/GrCaps.h"
#include "src/gpu/GrGpuResourcePriv.h"
#include "src/gpu/GrRenderTarget.h"
#include "src/gpu/GrResourceProvider.h"
#include "src/gpu/GrSurface.h"
#include "src/gpu/GrSurfaceProxyPriv.h"
#include "src/gpu/GrTextureRenderTargetProxy.h"
#ifdef SK_DEBUG
#include "include/gpu/GrDirectContext.h"
#include "src/gpu/GrDirectContextPriv.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 GrBackendFormat& format,
SkISize dimensions,
int sampleCount,
SkBackingFit fit,
SkBudgeted budgeted,
GrProtected isProtected,
GrInternalSurfaceFlags surfaceFlags,
UseAllocator useAllocator)
: INHERITED(format, dimensions, fit, budgeted, isProtected, surfaceFlags, useAllocator)
, fSampleCnt(sampleCount)
, fWrapsVkSecondaryCB(WrapsVkSecondaryCB::kNo) {}
// Lazy-callback version
GrRenderTargetProxy::GrRenderTargetProxy(LazyInstantiateCallback&& callback,
const GrBackendFormat& format,
SkISize dimensions,
int sampleCount,
SkBackingFit fit,
SkBudgeted budgeted,
GrProtected isProtected,
GrInternalSurfaceFlags surfaceFlags,
UseAllocator useAllocator,
WrapsVkSecondaryCB wrapsVkSecondaryCB)
: INHERITED(std::move(callback), format, dimensions, fit, budgeted, isProtected,
surfaceFlags, useAllocator)
, fSampleCnt(sampleCount)
, fWrapsVkSecondaryCB(wrapsVkSecondaryCB) {}
// Wrapped version
GrRenderTargetProxy::GrRenderTargetProxy(sk_sp<GrSurface> surf,
UseAllocator useAllocator,
WrapsVkSecondaryCB wrapsVkSecondaryCB)
: INHERITED(std::move(surf), SkBackingFit::kExact, useAllocator)
, fSampleCnt(fTarget->asRenderTarget()->numSamples())
, fWrapsVkSecondaryCB(wrapsVkSecondaryCB) {
// The kRequiresManualMSAAResolve flag better not be set if we are not multisampled or if
// MSAA resolve should happen automatically.
// From the other side, we don't know enough about the wrapped surface to assert when
// kRequiresManualMSAAResolve *should* be set. e.g., The caller might be wrapping a backend
// texture as a render target at this point but we wouldn't know it.
SkASSERT(!(this->numSamples() <= 1 ||
fTarget->getContext()->priv().caps()->msaaResolvesAutomatically()) ||
int GrRenderTargetProxy::maxWindowRectangles(const GrCaps& caps) const {
return this->glRTFBOIDIs0() ? 0 : caps.maxWindowRectangles();
bool GrRenderTargetProxy::instantiate(GrResourceProvider* resourceProvider) {
if (this->isLazy()) {
return false;
if (!this->instantiateImpl(resourceProvider, fSampleCnt, GrRenderable::kYes, GrMipmapped::kNo,
nullptr)) {
return false;
return true;
bool GrRenderTargetProxy::canUseStencil(const GrCaps& caps) const {
if (caps.avoidStencilBuffers() || this->wrapsVkSecondaryCB()) {
return false;
if (!this->isInstantiated()) {
if (this->isLazy() && this->backendFormat().backend() == GrBackendApi::kOpenGL) {
// It's possible for wrapped GL render targets to not have stencil. We don't currently
// have an exact way of knowing whether the target will be able to use stencil, so we do
// the best we can: if a lazy GL proxy doesn't have a texture, then it might be a
// wrapped target without stencil, so we conservatively block stencil.
// FIXME: SkSurfaceCharacterization needs a "canUseStencil" flag.
return SkToBool(this->asTextureProxy());
} else {
// Otherwise the target will definitely not be wrapped. Ganesh is free to attach
// stencils on internal render targets.
return true;
// Just ask the actual target if we can use stencil.
GrRenderTarget* rt = this->peekRenderTarget();
// The dmsaa attachment (if any) always supports stencil. The real question is whether the
// non-dmsaa attachment supports stencil.
bool useMSAASurface = rt->numSamples() > 1;
return rt->getStencilAttachment(useMSAASurface) ||
sk_sp<GrSurface> GrRenderTargetProxy::createSurface(GrResourceProvider* resourceProvider) const {
sk_sp<GrSurface> surface = this->createSurfaceImpl(resourceProvider, fSampleCnt,
GrRenderable::kYes, GrMipmapped::kNo);
if (!surface) {
return nullptr;
return surface;
size_t GrRenderTargetProxy::onUninstantiatedGpuMemorySize() const {
int colorSamplesPerPixel = this->numSamples();
if (colorSamplesPerPixel > 1) {
// Add one for the resolve buffer.
// TODO: do we have enough information to improve this worst case estimate?
return GrSurface::ComputeSize(this->backendFormat(), this->dimensions(),
colorSamplesPerPixel, GrMipmapped::kNo, !this->priv().isExact());
bool GrRenderTargetProxy::refsWrappedObjects() const {
if (!this->isInstantiated()) {
return false;
GrSurface* surface = this->peekSurface();
return surface->resourcePriv().refsWrappedObjects();
GrSurfaceProxy::LazySurfaceDesc GrRenderTargetProxy::callbackDesc() const {
// We only expect exactly sized lazy RT proxies.
return {
#ifdef SK_DEBUG
void GrRenderTargetProxy::onValidateSurface(const GrSurface* surface) {
// We do not check that surface->asTexture returns null since, when replaying DDLs we
// can fulfill a renderTarget-only proxy w/ a textureRenderTarget.
// Anything that is checked here should be duplicated in GrTextureRenderTargetProxy's version
SkASSERT(surface->asRenderTarget()->numSamples() == this->numSamples());
GrInternalSurfaceFlags proxyFlags = fSurfaceFlags;
GrInternalSurfaceFlags surfaceFlags = surface->flags();
if (proxyFlags & GrInternalSurfaceFlags::kGLRTFBOIDIs0 && this->numSamples() == 1) {
// Ganesh never internally creates FBO0 proxies or surfaces so this must be a wrapped
// proxy. In this case, with no MSAA, rendering to FBO0 is strictly more limited than
// rendering to an arbitrary surface so we allow a non-FBO0 surface to be matched with
// the proxy.
surfaceFlags |= GrInternalSurfaceFlags::kGLRTFBOIDIs0;
SkASSERT(((int)proxyFlags & kGrInternalRenderTargetFlagsMask) ==
((int)surfaceFlags & kGrInternalRenderTargetFlagsMask));
// We manually check the kVkRTSupportsInputAttachment since we only require it on the surface if
// the proxy has it set. If the proxy doesn't have the flag it is legal for the surface to
// have the flag.
if (proxyFlags & GrInternalSurfaceFlags::kVkRTSupportsInputAttachment) {
SkASSERT(surfaceFlags & GrInternalSurfaceFlags::kVkRTSupportsInputAttachment);