| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /************************************************************************************************** |
| *** This file was autogenerated from GrRRectBlurEffect.fp; do not modify. |
| **************************************************************************************************/ |
| #ifndef GrRRectBlurEffect_DEFINED |
| #define GrRRectBlurEffect_DEFINED |
| |
| #include "include/core/SkM44.h" |
| #include "include/core/SkTypes.h" |
| |
| #include "include/gpu/GrContext.h" |
| #include "include/gpu/GrRecordingContext.h" |
| #include "src/core/SkBlurPriv.h" |
| #include "src/core/SkGpuBlurUtils.h" |
| #include "src/core/SkRRectPriv.h" |
| #include "src/gpu/GrCaps.h" |
| #include "src/gpu/GrPaint.h" |
| #include "src/gpu/GrProxyProvider.h" |
| #include "src/gpu/GrRecordingContextPriv.h" |
| #include "src/gpu/GrRenderTargetContext.h" |
| #include "src/gpu/GrStyle.h" |
| #include "src/gpu/effects/GrTextureEffect.h" |
| |
| #include "src/gpu/GrFragmentProcessor.h" |
| |
| class GrRRectBlurEffect : public GrFragmentProcessor { |
| public: |
| static std::unique_ptr<GrFragmentProcessor> find_or_create_rrect_blur_mask_fp( |
| GrRecordingContext* context, |
| const SkRRect& rrectToDraw, |
| const SkISize& dimensions, |
| float xformedSigma) { |
| static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain(); |
| GrUniqueKey key; |
| GrUniqueKey::Builder builder(&key, kDomain, 9, "RoundRect Blur Mask"); |
| builder[0] = SkScalarCeilToInt(xformedSigma - 1 / 6.0f); |
| |
| int index = 1; |
| for (auto c : {SkRRect::kUpperLeft_Corner, SkRRect::kUpperRight_Corner, |
| SkRRect::kLowerRight_Corner, SkRRect::kLowerLeft_Corner}) { |
| SkASSERT(SkScalarIsInt(rrectToDraw.radii(c).fX) && |
| SkScalarIsInt(rrectToDraw.radii(c).fY)); |
| builder[index++] = SkScalarCeilToInt(rrectToDraw.radii(c).fX); |
| builder[index++] = SkScalarCeilToInt(rrectToDraw.radii(c).fY); |
| } |
| builder.finish(); |
| |
| // It seems like we could omit this matrix and modify the shader code to not normalize |
| // the coords used to sample the texture effect. However, the "proxyDims" value in the |
| // shader is not always the actual the proxy dimensions. This is because 'dimensions' here |
| // was computed using integer corner radii as determined in |
| // SkComputeBlurredRRectParams whereas the shader code uses the float radius to compute |
| // 'proxyDims'. Why it draws correctly with these unequal values is a mystery for the ages. |
| auto m = SkMatrix::Scale(dimensions.width(), dimensions.height()); |
| static constexpr auto kMaskOrigin = kBottomLeft_GrSurfaceOrigin; |
| GrProxyProvider* proxyProvider = context->priv().proxyProvider(); |
| |
| if (auto view = proxyProvider->findCachedProxyWithColorTypeFallback( |
| key, kMaskOrigin, GrColorType::kAlpha_8, 1)) { |
| return GrTextureEffect::Make(std::move(view), kPremul_SkAlphaType, m); |
| } |
| |
| auto rtc = GrRenderTargetContext::MakeWithFallback( |
| context, GrColorType::kAlpha_8, nullptr, SkBackingFit::kExact, dimensions, 1, |
| GrMipMapped::kNo, GrProtected::kNo, kMaskOrigin); |
| if (!rtc) { |
| return nullptr; |
| } |
| |
| GrPaint paint; |
| |
| rtc->clear(SK_PMColor4fTRANSPARENT); |
| rtc->drawRRect(nullptr, std::move(paint), GrAA::kYes, SkMatrix::I(), rrectToDraw, |
| GrStyle::SimpleFill()); |
| |
| GrSurfaceProxyView srcView = rtc->readSurfaceView(); |
| if (!srcView) { |
| return nullptr; |
| } |
| SkASSERT(srcView.asTextureProxy()); |
| auto rtc2 = SkGpuBlurUtils::GaussianBlur(context, |
| std::move(srcView), |
| rtc->colorInfo().colorType(), |
| rtc->colorInfo().alphaType(), |
| nullptr, |
| SkIRect::MakeSize(dimensions), |
| SkIRect::MakeSize(dimensions), |
| xformedSigma, |
| xformedSigma, |
| SkTileMode::kClamp, |
| SkBackingFit::kExact); |
| if (!rtc2) { |
| return nullptr; |
| } |
| |
| GrSurfaceProxyView mask = rtc2->readSurfaceView(); |
| if (!mask) { |
| return nullptr; |
| } |
| SkASSERT(mask.asTextureProxy()); |
| SkASSERT(mask.origin() == kMaskOrigin); |
| proxyProvider->assignUniqueKeyToProxy(key, mask.asTextureProxy()); |
| return GrTextureEffect::Make(std::move(mask), kPremul_SkAlphaType, m); |
| } |
| |
| static std::unique_ptr<GrFragmentProcessor> Make(std::unique_ptr<GrFragmentProcessor> inputFP, |
| GrRecordingContext* context, |
| float sigma, |
| float xformedSigma, |
| const SkRRect& srcRRect, |
| const SkRRect& devRRect); |
| GrRRectBlurEffect(const GrRRectBlurEffect& src); |
| std::unique_ptr<GrFragmentProcessor> clone() const override; |
| const char* name() const override { return "RRectBlurEffect"; } |
| float sigma; |
| SkRect rect; |
| float cornerRadius; |
| |
| private: |
| GrRRectBlurEffect(std::unique_ptr<GrFragmentProcessor> inputFP, |
| float sigma, |
| SkRect rect, |
| float cornerRadius, |
| std::unique_ptr<GrFragmentProcessor> ninePatchFP) |
| : INHERITED(kGrRRectBlurEffect_ClassID, |
| (OptimizationFlags)(inputFP ? ProcessorOptimizationFlags(inputFP.get()) |
| : kAll_OptimizationFlags) & |
| kCompatibleWithCoverageAsAlpha_OptimizationFlag) |
| , sigma(sigma) |
| , rect(rect) |
| , cornerRadius(cornerRadius) { |
| this->registerChild(std::move(inputFP), SkSL::SampleUsage::PassThrough()); |
| SkASSERT(ninePatchFP); |
| this->registerChild(std::move(ninePatchFP), SkSL::SampleUsage::Explicit()); |
| } |
| GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
| void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override; |
| bool onIsEqual(const GrFragmentProcessor&) const override; |
| GR_DECLARE_FRAGMENT_PROCESSOR_TEST |
| typedef GrFragmentProcessor INHERITED; |
| }; |
| #endif |