| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkArenaAlloc.h" |
| #include "SkColorFilterShader.h" |
| #include "SkColorSpaceXformer.h" |
| #include "SkReadBuffer.h" |
| #include "SkWriteBuffer.h" |
| #include "SkShader.h" |
| #include "SkString.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrFragmentProcessor.h" |
| #endif |
| |
| SkColorFilterShader::SkColorFilterShader(sk_sp<SkShader> shader, sk_sp<SkColorFilter> filter) |
| : fShader(std::move(shader)) |
| , fFilter(std::move(filter)) |
| { |
| SkASSERT(fShader); |
| SkASSERT(fFilter); |
| } |
| |
| sk_sp<SkFlattenable> SkColorFilterShader::CreateProc(SkReadBuffer& buffer) { |
| auto shader = buffer.readShader(); |
| auto filter = buffer.readColorFilter(); |
| if (!shader || !filter) { |
| return nullptr; |
| } |
| return sk_make_sp<SkColorFilterShader>(shader, filter); |
| } |
| |
| void SkColorFilterShader::flatten(SkWriteBuffer& buffer) const { |
| buffer.writeFlattenable(fShader.get()); |
| buffer.writeFlattenable(fFilter.get()); |
| } |
| |
| bool SkColorFilterShader::onAppendStages(SkRasterPipeline* pipeline, SkColorSpace* dstCS, |
| SkArenaAlloc* alloc, const SkMatrix& ctm, |
| const SkPaint& paint, const SkMatrix* localM) const { |
| if (!as_SB(fShader)->appendStages(pipeline, dstCS, alloc, ctm, paint, localM)) { |
| return false; |
| } |
| fFilter->appendStages(pipeline, dstCS, alloc, fShader->isOpaque()); |
| return true; |
| } |
| |
| sk_sp<SkShader> SkColorFilterShader::onMakeColorSpace(SkColorSpaceXformer* xformer) const { |
| return xformer->apply(fShader.get())->makeWithColorFilter(xformer->apply(fFilter.get())); |
| } |
| |
| #if SK_SUPPORT_GPU |
| ///////////////////////////////////////////////////////////////////// |
| |
| std::unique_ptr<GrFragmentProcessor> SkColorFilterShader::asFragmentProcessor( |
| const AsFPArgs& args) const { |
| auto fp1 = as_SB(fShader)->asFragmentProcessor(args); |
| if (!fp1) { |
| return nullptr; |
| } |
| |
| auto fp2 = fFilter->asFragmentProcessor(args.fContext, args.fDstColorSpace); |
| if (!fp2) { |
| return fp1; |
| } |
| |
| std::unique_ptr<GrFragmentProcessor> fpSeries[] = { std::move(fp1), std::move(fp2) }; |
| return GrFragmentProcessor::RunInSeries(fpSeries, 2); |
| } |
| #endif |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkColorFilterShader::toString(SkString* str) const { |
| str->append("SkColorFilterShader: ("); |
| |
| str->append("Shader: "); |
| as_SB(fShader)->toString(str); |
| str->append(" Filter: "); |
| // TODO: add "fFilter->toString(str);" once SkColorFilter::toString is added |
| |
| this->INHERITED::toString(str); |
| |
| str->append(")"); |
| } |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkShader> SkShader::makeWithColorFilter(sk_sp<SkColorFilter> filter) const { |
| SkShader* base = const_cast<SkShader*>(this); |
| if (!filter) { |
| return sk_ref_sp(base); |
| } |
| return sk_make_sp<SkColorFilterShader>(sk_ref_sp(base), filter); |
| } |