| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrBackendSurface.h" |
| #include "GrClip.h" |
| #include "GrContext.h" |
| #include "GrContextPriv.h" |
| #include "GrRenderTargetContext.h" |
| #include "GrTexture.h" |
| #include "GrTextureAdjuster.h" |
| #include "SkBitmapCache.h" |
| #include "SkImage_Gpu.h" |
| #include "SkImage_GpuBase.h" |
| #include "SkReadPixelsRec.h" |
| |
| SkImage_GpuBase::SkImage_GpuBase(sk_sp<GrContext> context, int width, int height, uint32_t uniqueID, |
| SkAlphaType at, SkBudgeted budgeted, sk_sp<SkColorSpace> cs) |
| : INHERITED(width, height, uniqueID) |
| , fContext(std::move(context)) |
| , fAlphaType(at) |
| , fBudgeted(budgeted) |
| , fColorSpace(std::move(cs)) {} |
| |
| SkImage_GpuBase::~SkImage_GpuBase() {} |
| |
| ////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkImage_GpuBase::ValidateBackendTexture(GrContext* ctx, const GrBackendTexture& tex, |
| GrPixelConfig* config, SkColorType ct, SkAlphaType at, |
| sk_sp<SkColorSpace> cs) { |
| if (!tex.isValid()) { |
| return false; |
| } |
| // TODO: Create a SkImageColorInfo struct for color, alpha, and color space so we don't need to |
| // create a fake image info here. |
| SkImageInfo info = SkImageInfo::Make(1, 1, ct, at, cs); |
| if (!SkImageInfoIsValid(info)) { |
| return false; |
| } |
| |
| return ctx->contextPriv().caps()->validateBackendTexture(tex, ct, config); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkImage_GpuBase::getROPixels(SkBitmap* dst, SkColorSpace*, CachingHint chint) const { |
| if (!fContext->contextPriv().resourceProvider()) { |
| // DDL TODO: buffer up the readback so it occurs when the DDL is drawn? |
| return false; |
| } |
| |
| // The SkColorSpace parameter "dstColorSpace" is really just a hint about how/where the bitmap |
| // will be used. The client doesn't expect that we convert to that color space, it's intended |
| // for codec-backed images, to drive our decoding heuristic. In theory we *could* read directly |
| // into that color space (to save the client some effort in whatever they're about to do), but |
| // that would make our use of the bitmap cache incorrect (or much less efficient, assuming we |
| // rolled the dstColorSpace into the key). |
| const auto desc = SkBitmapCacheDesc::Make(this); |
| if (SkBitmapCache::Find(desc, dst)) { |
| SkASSERT(dst->isImmutable()); |
| SkASSERT(dst->getPixels()); |
| return true; |
| } |
| |
| SkBitmapCache::RecPtr rec = nullptr; |
| SkPixmap pmap; |
| if (kAllow_CachingHint == chint) { |
| rec = SkBitmapCache::Alloc(desc, this->onImageInfo(), &pmap); |
| if (!rec) { |
| return false; |
| } |
| } else { |
| if (!dst->tryAllocPixels(this->onImageInfo()) || !dst->peekPixels(&pmap)) { |
| return false; |
| } |
| } |
| |
| sk_sp<GrSurfaceContext> sContext = fContext->contextPriv().makeWrappedSurfaceContext( |
| this->asTextureProxyRef(), |
| fColorSpace); |
| if (!sContext) { |
| return false; |
| } |
| |
| if (!sContext->readPixels(pmap.info(), pmap.writable_addr(), pmap.rowBytes(), 0, 0)) { |
| return false; |
| } |
| |
| if (rec) { |
| SkBitmapCache::Add(std::move(rec), dst); |
| this->notifyAddedToRasterCache(); |
| } |
| return true; |
| } |
| |
| sk_sp<SkImage> SkImage_GpuBase::onMakeSubset(const SkIRect& subset) const { |
| sk_sp<GrSurfaceProxy> proxy = this->asTextureProxyRef(); |
| |
| GrSurfaceDesc desc; |
| desc.fWidth = subset.width(); |
| desc.fHeight = subset.height(); |
| desc.fConfig = proxy->config(); |
| |
| sk_sp<GrSurfaceContext> sContext(fContext->contextPriv().makeDeferredSurfaceContext( |
| desc, proxy->origin(), GrMipMapped::kNo, SkBackingFit::kExact, fBudgeted)); |
| if (!sContext) { |
| return nullptr; |
| } |
| |
| if (!sContext->copy(proxy.get(), subset, SkIPoint::Make(0, 0))) { |
| return nullptr; |
| } |
| |
| // MDB: this call is okay bc we know 'sContext' was kExact |
| return sk_make_sp<SkImage_Gpu>(fContext, kNeedNewImageUniqueID, |
| fAlphaType, sContext->asTextureProxyRef(), |
| fColorSpace, fBudgeted); |
| } |
| |
| static void apply_premul(const SkImageInfo& info, void* pixels, size_t rowBytes) { |
| switch (info.colorType()) { |
| case kRGBA_8888_SkColorType: |
| case kBGRA_8888_SkColorType: |
| break; |
| default: |
| return; // nothing to do |
| } |
| |
| // SkColor is not necesarily RGBA or BGRA, but it is one of them on little-endian, |
| // and in either case, the alpha-byte is always in the same place, so we can safely call |
| // SkPreMultiplyColor() |
| // |
| SkColor* row = (SkColor*)pixels; |
| for (int y = 0; y < info.height(); ++y) { |
| for (int x = 0; x < info.width(); ++x) { |
| row[x] = SkPreMultiplyColor(row[x]); |
| } |
| row = (SkColor*)((char*)(row)+rowBytes); |
| } |
| } |
| |
| bool SkImage_GpuBase::onReadPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRB, |
| int srcX, int srcY, CachingHint) const { |
| if (!fContext->contextPriv().resourceProvider()) { |
| // DDL TODO: buffer up the readback so it occurs when the DDL is drawn? |
| return false; |
| } |
| |
| if (!SkImageInfoValidConversion(dstInfo, this->onImageInfo())) { |
| return false; |
| } |
| |
| SkReadPixelsRec rec(dstInfo, dstPixels, dstRB, srcX, srcY); |
| if (!rec.trim(this->width(), this->height())) { |
| return false; |
| } |
| |
| // TODO: this seems to duplicate code in GrTextureContext::onReadPixels and |
| // GrRenderTargetContext::onReadPixels |
| uint32_t flags = 0; |
| if (kUnpremul_SkAlphaType == rec.fInfo.alphaType() && kPremul_SkAlphaType == fAlphaType) { |
| // let the GPU perform this transformation for us |
| flags = GrContextPriv::kUnpremul_PixelOpsFlag; |
| } |
| |
| sk_sp<GrSurfaceContext> sContext = fContext->contextPriv().makeWrappedSurfaceContext( |
| this->asTextureProxyRef(), fColorSpace); |
| if (!sContext) { |
| return false; |
| } |
| |
| if (!sContext->readPixels(rec.fInfo, rec.fPixels, rec.fRowBytes, rec.fX, rec.fY, flags)) { |
| return false; |
| } |
| |
| // do we have to manually fix-up the alpha channel? |
| // src dst |
| // unpremul premul fix manually |
| // premul unpremul done by kUnpremul_PixelOpsFlag |
| // all other combos need to change. |
| // |
| // Should this be handled by Ganesh? todo:? |
| // |
| if (kPremul_SkAlphaType == rec.fInfo.alphaType() && kUnpremul_SkAlphaType == fAlphaType) { |
| apply_premul(rec.fInfo, rec.fPixels, rec.fRowBytes); |
| } |
| return true; |
| } |
| |
| sk_sp<GrTextureProxy> SkImage_GpuBase::asTextureProxyRef(GrContext* context, |
| const GrSamplerState& params, |
| SkColorSpace* dstColorSpace, |
| sk_sp<SkColorSpace>* texColorSpace, |
| SkScalar scaleAdjust[2]) const { |
| if (context->uniqueID() != fContext->uniqueID()) { |
| SkASSERT(0); |
| return nullptr; |
| } |
| |
| GrTextureAdjuster adjuster(fContext.get(), this->asTextureProxyRef(), fAlphaType, |
| this->uniqueID(), fColorSpace.get()); |
| return adjuster.refTextureProxyForParams(params, dstColorSpace, texColorSpace, scaleAdjust); |
| } |
| |
| GrBackendTexture SkImage_GpuBase::onGetBackendTexture(bool flushPendingGrContextIO, |
| GrSurfaceOrigin* origin) const { |
| sk_sp<GrTextureProxy> proxy = this->asTextureProxyRef(); |
| SkASSERT(proxy); |
| |
| if (!fContext->contextPriv().resourceProvider() && !proxy->isInstantiated()) { |
| // This image was created with a DDL context and cannot be instantiated. |
| return GrBackendTexture(); |
| } |
| |
| if (!proxy->instantiate(fContext->contextPriv().resourceProvider())) { |
| return GrBackendTexture(); // invalid |
| } |
| |
| GrTexture* texture = proxy->peekTexture(); |
| |
| if (texture) { |
| if (flushPendingGrContextIO) { |
| fContext->contextPriv().prepareSurfaceForExternalIO(proxy.get()); |
| } |
| if (origin) { |
| *origin = proxy->origin(); |
| } |
| return texture->getBackendTexture(); |
| } |
| return GrBackendTexture(); // invalid |
| } |
| |
| GrTexture* SkImage_GpuBase::onGetTexture() const { |
| GrTextureProxy* proxy = this->peekProxy(); |
| if (!proxy) { |
| return nullptr; |
| } |
| |
| sk_sp<GrTextureProxy> proxyRef = this->asTextureProxyRef(); |
| if (!fContext->contextPriv().resourceProvider() && !proxyRef->isInstantiated()) { |
| // This image was created with a DDL context and cannot be instantiated. |
| return nullptr; |
| } |
| |
| if (!proxy->instantiate(fContext->contextPriv().resourceProvider())) { |
| return nullptr; |
| } |
| |
| return proxy->peekTexture(); |
| } |
| |
| sk_sp<SkImage> SkImage_GpuBase::onMakeColorSpace(sk_sp<SkColorSpace> target) const { |
| SkAlphaType newAlphaType = fAlphaType; |
| #if defined(SK_LEGACY_MAKE_COLOR_SPACE_IMPL) |
| if (kUnpremul_SkAlphaType == fAlphaType) { |
| newAlphaType = kPremul_SkAlphaType; |
| } |
| #endif |
| auto xform = GrColorSpaceXformEffect::Make(fColorSpace.get(), this->alphaType(), |
| target.get(), newAlphaType); |
| if (!xform) { |
| return sk_ref_sp(const_cast<SkImage_GpuBase*>(this)); |
| } |
| |
| sk_sp<GrRenderTargetContext> renderTargetContext( |
| fContext->contextPriv().makeDeferredRenderTargetContext( |
| SkBackingFit::kExact, this->width(), this->height(), |
| kRGBA_8888_GrPixelConfig, nullptr)); |
| if (!renderTargetContext) { |
| return nullptr; |
| } |
| |
| GrPaint paint; |
| paint.setPorterDuffXPFactory(SkBlendMode::kSrc); |
| paint.addColorTextureProcessor(this->asTextureProxyRef(), SkMatrix::I()); |
| paint.addColorFragmentProcessor(std::move(xform)); |
| |
| const SkRect rect = SkRect::MakeIWH(this->width(), this->height()); |
| |
| renderTargetContext->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), rect); |
| |
| if (!renderTargetContext->asTextureProxy()) { |
| return nullptr; |
| } |
| |
| // MDB: this call is okay bc we know 'renderTargetContext' was exact |
| return sk_make_sp<SkImage_Gpu>(fContext, kNeedNewImageUniqueID, |
| newAlphaType, renderTargetContext->asTextureProxyRef(), |
| std::move(target), fBudgeted); |
| } |
| |
| bool SkImage_GpuBase::onIsValid(GrContext* context) const { |
| // The base class has already checked that context isn't abandoned (if it's not nullptr) |
| if (fContext->abandoned()) { |
| return false; |
| } |
| |
| if (context && context != fContext.get()) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| ///////////////////////////////////////////////////////////////////////////////////////////////// |
| sk_sp<GrTexture> SkPromiseImageHelper::getTexture(GrResourceProvider* resourceProvider, |
| GrPixelConfig config) { |
| // Releases the promise helper if there are no outstanding hard refs. This means that we |
| // don't have any ReleaseProcs waiting to be called so we will need to do a fulfill. |
| if (fReleaseHelper && fReleaseHelper->weak_expired()) { |
| this->resetReleaseHelper(); |
| } |
| |
| sk_sp<GrTexture> tex; |
| if (!fReleaseHelper) { |
| fFulfillProc(fContext, &fBackendTex); |
| fBackendTex.fConfig = config; |
| if (!fBackendTex.isValid()) { |
| // Even though the GrBackendTexture is not valid, we must call the release |
| // proc to keep our contract of always calling Fulfill and Release in pairs. |
| fReleaseProc(fContext); |
| return sk_sp<GrTexture>(); |
| } |
| |
| tex = resourceProvider->wrapBackendTexture(fBackendTex, kBorrow_GrWrapOwnership); |
| if (!tex) { |
| // Even though the GrBackendTexture is not valid, we must call the release |
| // proc to keep our contract of always calling Fulfill and Release in pairs. |
| fReleaseProc(fContext); |
| return sk_sp<GrTexture>(); |
| } |
| fReleaseHelper = new SkPromiseReleaseProcHelper(fReleaseProc, fContext, fDoneHelper); |
| // Take a weak ref |
| fReleaseHelper->weak_ref(); |
| } else { |
| SkASSERT(fBackendTex.isValid()); |
| tex = resourceProvider->wrapBackendTexture(fBackendTex, kBorrow_GrWrapOwnership); |
| if (!tex) { |
| // We weren't able to make a texture here, but since we are in this branch |
| // of the calls (promiseHelper.fReleaseHelper is valid) there is already a |
| // texture out there which will call the release proc so we don't need to |
| // call it here. |
| return sk_sp<GrTexture>(); |
| } |
| |
| SkAssertResult(fReleaseHelper->try_ref()); |
| } |
| SkASSERT(tex); |
| // Pass the hard ref off to the texture |
| tex->setRelease(sk_sp<GrReleaseProcHelper>(fReleaseHelper)); |
| return tex; |
| } |
