| /* |
| * 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 "GrTextureAdjuster.h" |
| |
| #include "GrContext.h" |
| #include "GrGpu.h" |
| #include "GrResourceProvider.h" |
| #include "SkGr.h" |
| |
| GrTextureAdjuster::GrTextureAdjuster(GrContext* context, sk_sp<GrTextureProxy> original, |
| SkAlphaType alphaType, |
| const SkIRect& contentArea, uint32_t uniqueID, |
| SkColorSpace* cs) |
| : INHERITED(contentArea.width(), contentArea.height(), |
| GrPixelConfigIsAlphaOnly(original->config())) |
| , fContext(context) |
| , fOriginal(std::move(original)) |
| , fAlphaType(alphaType) |
| , fColorSpace(cs) |
| , fUniqueID(uniqueID) { |
| SkASSERT(SkIRect::MakeWH(fOriginal->width(), fOriginal->height()).contains(contentArea)); |
| SkASSERT(0 == contentArea.fLeft && 0 == contentArea.fTop); |
| if (contentArea.fRight < fOriginal->width() || contentArea.fBottom < fOriginal->height()) { |
| fContentArea.set(contentArea); |
| } |
| } |
| |
| void GrTextureAdjuster::makeCopyKey(const CopyParams& params, GrUniqueKey* copyKey, |
| SkColorSpace* dstColorSpace) { |
| // Destination color space is irrelevant - we already have a texture so we're just sub-setting |
| GrUniqueKey baseKey; |
| GrMakeKeyFromImageID(&baseKey, fUniqueID, SkIRect::MakeWH(this->width(), this->height())); |
| MakeCopyKeyFromOrigKey(baseKey, params, copyKey); |
| } |
| |
| void GrTextureAdjuster::didCacheCopy(const GrUniqueKey& copyKey) { |
| // We don't currently have a mechanism for notifications on Images! |
| } |
| |
| sk_sp<GrTextureProxy> GrTextureAdjuster::refTextureProxyCopy(const CopyParams& copyParams, |
| bool willBeMipped) { |
| GrUniqueKey key; |
| this->makeCopyKey(copyParams, &key, nullptr); |
| if (key.isValid()) { |
| sk_sp<GrTextureProxy> cachedCopy = |
| fContext->resourceProvider()->findOrCreateProxyByUniqueKey( |
| key, this->originalProxy()->origin()); |
| if (cachedCopy) { |
| return cachedCopy; |
| } |
| } |
| |
| sk_sp<GrTextureProxy> proxy = this->originalProxyRef(); |
| const SkIRect* contentArea = this->contentAreaOrNull(); |
| |
| sk_sp<GrTextureProxy> copy = CopyOnGpu(fContext, std::move(proxy), contentArea, copyParams, |
| willBeMipped); |
| if (copy) { |
| if (key.isValid()) { |
| SkASSERT(copy->origin() == this->originalProxy()->origin()); |
| fContext->resourceProvider()->assignUniqueKeyToProxy(key, copy.get()); |
| this->didCacheCopy(key); |
| } |
| } |
| return copy; |
| } |
| |
| sk_sp<GrTextureProxy> GrTextureAdjuster::refTextureProxySafeForParams(const GrSamplerState& params, |
| SkScalar scaleAdjust[2]) { |
| sk_sp<GrTextureProxy> proxy = this->originalProxyRef(); |
| CopyParams copyParams; |
| const SkIRect* contentArea = this->contentAreaOrNull(); |
| |
| if (!fContext) { |
| // The texture was abandoned. |
| return nullptr; |
| } |
| |
| bool willBeMipped = GrSamplerState::Filter::kMipMap == params.filter(); |
| if (contentArea && willBeMipped) { |
| // If we generate a MIP chain for texture it will read pixel values from outside the content |
| // area. |
| copyParams.fWidth = contentArea->width(); |
| copyParams.fHeight = contentArea->height(); |
| copyParams.fFilter = GrSamplerState::Filter::kBilerp; |
| } else if (!fContext->getGpu()->isACopyNeededForTextureParams(proxy.get(), params, ©Params, |
| scaleAdjust)) { |
| return proxy; |
| } |
| |
| return this->refTextureProxyCopy(copyParams, willBeMipped); |
| } |
| |
| std::unique_ptr<GrFragmentProcessor> GrTextureAdjuster::createFragmentProcessor( |
| const SkMatrix& origTextureMatrix, |
| const SkRect& origConstraintRect, |
| FilterConstraint filterConstraint, |
| bool coordsLimitedToConstraintRect, |
| const GrSamplerState::Filter* filterOrNullForBicubic, |
| SkColorSpace* dstColorSpace) { |
| SkMatrix textureMatrix = origTextureMatrix; |
| const SkIRect* contentArea = this->contentAreaOrNull(); |
| // Convert the constraintRect to be relative to the texture rather than the content area so |
| // that both rects are in the same coordinate system. |
| SkTCopyOnFirstWrite<SkRect> constraintRect(origConstraintRect); |
| if (contentArea) { |
| SkScalar l = SkIntToScalar(contentArea->fLeft); |
| SkScalar t = SkIntToScalar(contentArea->fTop); |
| constraintRect.writable()->offset(l, t); |
| textureMatrix.postTranslate(l, t); |
| } |
| |
| SkRect domain; |
| GrSamplerState samplerState; |
| if (filterOrNullForBicubic) { |
| samplerState.setFilterMode(*filterOrNullForBicubic); |
| } |
| SkScalar scaleAdjust[2] = { 1.0f, 1.0f }; |
| sk_sp<GrTextureProxy> proxy( |
| this->refTextureProxySafeForParams(samplerState, scaleAdjust)); |
| if (!proxy) { |
| return nullptr; |
| } |
| // If we made a copy then we only copied the contentArea, in which case the new texture is all |
| // content. |
| if (proxy.get() != this->originalProxy()) { |
| contentArea = nullptr; |
| textureMatrix.postScale(scaleAdjust[0], scaleAdjust[1]); |
| } |
| |
| DomainMode domainMode = |
| DetermineDomainMode(*constraintRect, filterConstraint, coordsLimitedToConstraintRect, |
| proxy.get(), |
| contentArea, filterOrNullForBicubic, |
| &domain); |
| if (kTightCopy_DomainMode == domainMode) { |
| // TODO: Copy the texture and adjust the texture matrix (both parts need to consider |
| // non-int constraint rect) |
| // For now: treat as bilerp and ignore what goes on above level 0. |
| |
| // We only expect MIP maps to require a tight copy. |
| SkASSERT(filterOrNullForBicubic && |
| GrSamplerState::Filter::kMipMap == *filterOrNullForBicubic); |
| static const GrSamplerState::Filter kBilerp = GrSamplerState::Filter::kBilerp; |
| domainMode = |
| DetermineDomainMode(*constraintRect, filterConstraint, coordsLimitedToConstraintRect, |
| proxy.get(), |
| contentArea, &kBilerp, &domain); |
| SkASSERT(kTightCopy_DomainMode != domainMode); |
| } |
| SkASSERT(kNoDomain_DomainMode == domainMode || |
| (domain.fLeft <= domain.fRight && domain.fTop <= domain.fBottom)); |
| auto fp = CreateFragmentProcessorForDomainAndFilter(std::move(proxy), textureMatrix, |
| domainMode, domain, filterOrNullForBicubic); |
| return GrColorSpaceXformEffect::Make(std::move(fp), fColorSpace, dstColorSpace); |
| } |