| /* |
| * Copyright 2010 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/SkGr.h" |
| |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColorFilter.h" |
| #include "include/core/SkData.h" |
| #include "include/core/SkPixelRef.h" |
| #include "include/gpu/GrContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/GrRecordingContext.h" |
| #include "include/private/SkImageInfoPriv.h" |
| #include "include/private/SkTemplates.h" |
| #include "src/core/SkAutoMalloc.h" |
| #include "src/core/SkBlendModePriv.h" |
| #include "src/core/SkColorSpacePriv.h" |
| #include "src/core/SkImagePriv.h" |
| #include "src/core/SkMaskFilterBase.h" |
| #include "src/core/SkMessageBus.h" |
| #include "src/core/SkMipMap.h" |
| #include "src/core/SkPaintPriv.h" |
| #include "src/core/SkResourceCache.h" |
| #include "src/core/SkTraceEvent.h" |
| #include "src/gpu/GrBitmapTextureMaker.h" |
| #include "src/gpu/GrCaps.h" |
| #include "src/gpu/GrColorSpaceXform.h" |
| #include "src/gpu/GrContextPriv.h" |
| #include "src/gpu/GrGpuResourcePriv.h" |
| #include "src/gpu/GrPaint.h" |
| #include "src/gpu/GrProxyProvider.h" |
| #include "src/gpu/GrRecordingContextPriv.h" |
| #include "src/gpu/GrTextureProxy.h" |
| #include "src/gpu/GrXferProcessor.h" |
| #include "src/gpu/effects/GrBicubicEffect.h" |
| #include "src/gpu/effects/GrPorterDuffXferProcessor.h" |
| #include "src/gpu/effects/GrSkSLFP.h" |
| #include "src/gpu/effects/GrXfermodeFragmentProcessor.h" |
| #include "src/gpu/effects/generated/GrConstColorProcessor.h" |
| #include "src/gpu/effects/generated/GrSaturateProcessor.h" |
| #include "src/image/SkImage_Base.h" |
| #include "src/shaders/SkShaderBase.h" |
| |
| GR_FP_SRC_STRING SKSL_DITHER_SRC = R"( |
| // This controls the range of values added to color channels |
| in int rangeType; |
| |
| void main(float x, float y, inout half4 color) { |
| half value; |
| half range; |
| @switch (rangeType) { |
| case 0: |
| range = 1.0 / 255.0; |
| break; |
| case 1: |
| range = 1.0 / 63.0; |
| break; |
| default: |
| // Experimentally this looks better than the expected value of 1/15. |
| range = 1.0 / 15.0; |
| break; |
| } |
| @if (sk_Caps.integerSupport) { |
| // This ordered-dither code is lifted from the cpu backend. |
| uint x = uint(x); |
| uint y = uint(y); |
| uint m = (y & 1) << 5 | (x & 1) << 4 | |
| (y & 2) << 2 | (x & 2) << 1 | |
| (y & 4) >> 1 | (x & 4) >> 2; |
| value = half(m) * 1.0 / 64.0 - 63.0 / 128.0; |
| } else { |
| // Simulate the integer effect used above using step/mod. For speed, simulates a 4x4 |
| // dither pattern rather than an 8x8 one. |
| half4 modValues = mod(half4(half(x), half(y), half(x), half(y)), half4(2.0, 2.0, 4.0, 4.0)); |
| half4 stepValues = step(modValues, half4(1.0, 1.0, 2.0, 2.0)); |
| value = dot(stepValues, half4(8.0 / 16.0, 4.0 / 16.0, 2.0 / 16.0, 1.0 / 16.0)) - 15.0 / 32.0; |
| } |
| // For each color channel, add the random offset to the channel value and then clamp |
| // between 0 and alpha to keep the color premultiplied. |
| color = half4(clamp(color.rgb + value * range, 0.0, color.a), color.a); |
| } |
| )"; |
| |
| GrSurfaceDesc GrImageInfoToSurfaceDesc(const SkImageInfo& info) { |
| GrSurfaceDesc desc; |
| desc.fWidth = info.width(); |
| desc.fHeight = info.height(); |
| desc.fConfig = SkImageInfo2GrPixelConfig(info); |
| return desc; |
| } |
| |
| void GrMakeKeyFromImageID(GrUniqueKey* key, uint32_t imageID, const SkIRect& imageBounds) { |
| SkASSERT(key); |
| SkASSERT(imageID); |
| SkASSERT(!imageBounds.isEmpty()); |
| static const GrUniqueKey::Domain kImageIDDomain = GrUniqueKey::GenerateDomain(); |
| GrUniqueKey::Builder builder(key, kImageIDDomain, 5, "Image"); |
| builder[0] = imageID; |
| builder[1] = imageBounds.fLeft; |
| builder[2] = imageBounds.fTop; |
| builder[3] = imageBounds.fRight; |
| builder[4] = imageBounds.fBottom; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrInstallBitmapUniqueKeyInvalidator(const GrUniqueKey& key, uint32_t contextUniqueID, |
| SkPixelRef* pixelRef) { |
| class Invalidator : public SkPixelRef::GenIDChangeListener { |
| public: |
| explicit Invalidator(const GrUniqueKey& key, uint32_t contextUniqueID) |
| : fMsg(key, contextUniqueID) {} |
| |
| private: |
| GrUniqueKeyInvalidatedMessage fMsg; |
| |
| void onChange() override { SkMessageBus<GrUniqueKeyInvalidatedMessage>::Post(fMsg); } |
| }; |
| |
| pixelRef->addGenIDChangeListener(new Invalidator(key, contextUniqueID)); |
| } |
| |
| sk_sp<GrTextureProxy> GrCopyBaseMipMapToTextureProxy(GrRecordingContext* ctx, |
| GrTextureProxy* baseProxy, |
| GrColorType srcColorType) { |
| SkASSERT(baseProxy); |
| |
| if (!ctx->priv().caps()->isFormatCopyable(baseProxy->backendFormat())) { |
| return nullptr; |
| } |
| return GrSurfaceProxy::Copy(ctx, baseProxy, srcColorType, GrMipMapped::kYes, |
| SkBackingFit::kExact, SkBudgeted::kYes); |
| } |
| |
| sk_sp<GrTextureProxy> GrRefCachedBitmapTextureProxy(GrRecordingContext* ctx, |
| const SkBitmap& bitmap, |
| const GrSamplerState& params, |
| SkScalar scaleAdjust[2]) { |
| return GrBitmapTextureMaker(ctx, bitmap).refTextureProxyForParams(params, scaleAdjust); |
| } |
| |
| sk_sp<GrTextureProxy> GrMakeCachedBitmapProxy(GrProxyProvider* proxyProvider, |
| const SkBitmap& bitmap, |
| SkBackingFit fit) { |
| if (!bitmap.peekPixels(nullptr)) { |
| return nullptr; |
| } |
| |
| // In non-ddl we will always instantiate right away. Thus we never want to copy the SkBitmap |
| // even if its mutable. In ddl, if the bitmap is mutable then we must make a copy since the |
| // upload of the data to the gpu can happen at anytime and the bitmap may change by then. |
| SkCopyPixelsMode cpyMode = proxyProvider->renderingDirectly() ? kNever_SkCopyPixelsMode |
| : kIfMutable_SkCopyPixelsMode; |
| sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, cpyMode); |
| |
| if (!image) { |
| return nullptr; |
| } |
| |
| return GrMakeCachedImageProxy(proxyProvider, std::move(image), fit); |
| } |
| |
| static void create_unique_key_for_image(const SkImage* image, GrUniqueKey* result) { |
| if (!image) { |
| result->reset(); // will be invalid |
| return; |
| } |
| |
| if (const SkBitmap* bm = as_IB(image)->onPeekBitmap()) { |
| if (!bm->isVolatile()) { |
| SkIPoint origin = bm->pixelRefOrigin(); |
| SkIRect subset = SkIRect::MakeXYWH(origin.fX, origin.fY, bm->width(), bm->height()); |
| GrMakeKeyFromImageID(result, bm->getGenerationID(), subset); |
| } |
| return; |
| } |
| |
| GrMakeKeyFromImageID(result, image->uniqueID(), image->bounds()); |
| } |
| |
| sk_sp<GrTextureProxy> GrMakeCachedImageProxy(GrProxyProvider* proxyProvider, |
| sk_sp<SkImage> srcImage, |
| SkBackingFit fit) { |
| sk_sp<GrTextureProxy> proxy; |
| GrUniqueKey originalKey; |
| |
| create_unique_key_for_image(srcImage.get(), &originalKey); |
| |
| if (originalKey.isValid()) { |
| proxy = proxyProvider->findOrCreateProxyByUniqueKey( |
| originalKey, SkColorTypeToGrColorType(srcImage->colorType()), |
| kTopLeft_GrSurfaceOrigin); |
| } |
| if (!proxy) { |
| proxy = proxyProvider->createTextureProxy(srcImage, 1, SkBudgeted::kYes, fit); |
| if (proxy && originalKey.isValid()) { |
| proxyProvider->assignUniqueKeyToProxy(originalKey, proxy.get()); |
| const SkBitmap* bm = as_IB(srcImage.get())->onPeekBitmap(); |
| // When recording DDLs we do not want to install change listeners because doing |
| // so isn't threadsafe. |
| if (bm && proxyProvider->renderingDirectly()) { |
| GrInstallBitmapUniqueKeyInvalidator(originalKey, proxyProvider->contextID(), |
| bm->pixelRef()); |
| } |
| } |
| } |
| |
| return proxy; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkPMColor4f SkColorToPMColor4f(SkColor c, const GrColorInfo& colorInfo) { |
| SkColor4f color = SkColor4f::FromColor(c); |
| if (auto* xform = colorInfo.colorSpaceXformFromSRGB()) { |
| color = xform->apply(color); |
| } |
| return color.premul(); |
| } |
| |
| SkColor4f SkColor4fPrepForDst(SkColor4f color, const GrColorInfo& colorInfo) { |
| if (auto* xform = colorInfo.colorSpaceXformFromSRGB()) { |
| color = xform->apply(color); |
| } |
| return color; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrPixelConfig SkColorType2GrPixelConfig(const SkColorType type) { |
| switch (type) { |
| case kUnknown_SkColorType: |
| return kUnknown_GrPixelConfig; |
| case kAlpha_8_SkColorType: |
| return kAlpha_8_GrPixelConfig; |
| case kRGB_565_SkColorType: |
| return kRGB_565_GrPixelConfig; |
| case kARGB_4444_SkColorType: |
| return kRGBA_4444_GrPixelConfig; |
| case kRGBA_8888_SkColorType: |
| return kRGBA_8888_GrPixelConfig; |
| case kRGB_888x_SkColorType: |
| return kRGB_888_GrPixelConfig; |
| case kBGRA_8888_SkColorType: |
| return kBGRA_8888_GrPixelConfig; |
| case kRGBA_1010102_SkColorType: |
| return kRGBA_1010102_GrPixelConfig; |
| case kRGB_101010x_SkColorType: |
| return kUnknown_GrPixelConfig; |
| case kGray_8_SkColorType: |
| return kGray_8_GrPixelConfig; |
| case kRGBA_F16Norm_SkColorType: |
| return kRGBA_half_Clamped_GrPixelConfig; |
| case kRGBA_F16_SkColorType: |
| return kRGBA_half_GrPixelConfig; |
| case kRGBA_F32_SkColorType: |
| return kUnknown_GrPixelConfig; |
| case kR8G8_unorm_SkColorType: |
| return kRG_88_GrPixelConfig; |
| case kR16G16_unorm_SkColorType: |
| return kRG_1616_GrPixelConfig; |
| case kA16_unorm_SkColorType: |
| return kAlpha_16_GrPixelConfig; |
| case kA16_float_SkColorType: |
| return kAlpha_half_GrPixelConfig; |
| case kR16G16_float_SkColorType: |
| return kRG_half_GrPixelConfig; |
| case kR16G16B16A16_unorm_SkColorType: |
| return kRGBA_16161616_GrPixelConfig; |
| } |
| SkUNREACHABLE; |
| } |
| |
| GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info) { |
| return SkColorType2GrPixelConfig(info.colorType()); |
| } |
| |
| bool GrPixelConfigToColorType(GrPixelConfig config, SkColorType* ctOut) { |
| SkColorType ct = GrColorTypeToSkColorType(GrPixelConfigToColorType(config)); |
| if (kUnknown_SkColorType != ct) { |
| if (ctOut) { |
| *ctOut = ct; |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static inline bool blend_requires_shader(const SkBlendMode mode) { |
| return SkBlendMode::kDst != mode; |
| } |
| |
| #ifndef SK_IGNORE_GPU_DITHER |
| static inline int32_t dither_range_type_for_config(GrColorType dstColorType) { |
| switch (dstColorType) { |
| case GrColorType::kGray_8: |
| case GrColorType::kRGBA_8888: |
| case GrColorType::kRGB_888x: |
| case GrColorType::kRG_88: |
| case GrColorType::kBGRA_8888: |
| case GrColorType::kRG_1616: |
| case GrColorType::kRGBA_16161616: |
| case GrColorType::kRG_F16: |
| return 0; |
| case GrColorType::kBGR_565: |
| return 1; |
| case GrColorType::kABGR_4444: |
| return 2; |
| case GrColorType::kUnknown: |
| case GrColorType::kRGBA_8888_SRGB: |
| case GrColorType::kRGBA_1010102: |
| case GrColorType::kAlpha_F16: |
| case GrColorType::kRGBA_F32: |
| case GrColorType::kRGBA_F16: |
| case GrColorType::kRGBA_F16_Clamped: |
| case GrColorType::kAlpha_8: |
| case GrColorType::kAlpha_8xxx: |
| case GrColorType::kAlpha_16: |
| case GrColorType::kAlpha_F32xxx: |
| case GrColorType::kGray_8xxx: |
| return -1; |
| } |
| SkUNREACHABLE; |
| } |
| #endif |
| |
| static inline bool skpaint_to_grpaint_impl(GrRecordingContext* context, |
| const GrColorInfo& dstColorInfo, |
| const SkPaint& skPaint, |
| const SkMatrix& viewM, |
| std::unique_ptr<GrFragmentProcessor>* shaderProcessor, |
| SkBlendMode* primColorMode, |
| GrPaint* grPaint) { |
| // Convert SkPaint color to 4f format in the destination color space |
| SkColor4f origColor = SkColor4fPrepForDst(skPaint.getColor4f(), dstColorInfo); |
| |
| GrFPArgs fpArgs(context, &viewM, skPaint.getFilterQuality(), &dstColorInfo); |
| |
| // Setup the initial color considering the shader, the SkPaint color, and the presence or not |
| // of per-vertex colors. |
| std::unique_ptr<GrFragmentProcessor> shaderFP; |
| if (!primColorMode || blend_requires_shader(*primColorMode)) { |
| fpArgs.fInputColorIsOpaque = origColor.isOpaque(); |
| if (shaderProcessor) { |
| shaderFP = std::move(*shaderProcessor); |
| } else if (const auto* shader = as_SB(skPaint.getShader())) { |
| shaderFP = shader->asFragmentProcessor(fpArgs); |
| if (!shaderFP) { |
| return false; |
| } |
| } |
| } |
| |
| // Set this in below cases if the output of the shader/paint-color/paint-alpha/primXfermode is |
| // a known constant value. In that case we can simply apply a color filter during this |
| // conversion without converting the color filter to a GrFragmentProcessor. |
| bool applyColorFilterToPaintColor = false; |
| if (shaderFP) { |
| if (primColorMode) { |
| // There is a blend between the primitive color and the shader color. The shader sees |
| // the opaque paint color. The shader's output is blended using the provided mode by |
| // the primitive color. The blended color is then modulated by the paint's alpha. |
| |
| // The geometry processor will insert the primitive color to start the color chain, so |
| // the GrPaint color will be ignored. |
| |
| SkPMColor4f shaderInput = origColor.makeOpaque().premul(); |
| shaderFP = GrFragmentProcessor::OverrideInput(std::move(shaderFP), shaderInput); |
| shaderFP = GrXfermodeFragmentProcessor::MakeFromSrcProcessor(std::move(shaderFP), |
| *primColorMode); |
| |
| // The above may return null if compose results in a pass through of the prim color. |
| if (shaderFP) { |
| grPaint->addColorFragmentProcessor(std::move(shaderFP)); |
| } |
| |
| // We can ignore origColor here - alpha is unchanged by gamma |
| float paintAlpha = skPaint.getColor4f().fA; |
| if (1.0f != paintAlpha) { |
| // No gamut conversion - paintAlpha is a (linear) alpha value, splatted to all |
| // color channels. It's value should be treated as the same in ANY color space. |
| grPaint->addColorFragmentProcessor(GrConstColorProcessor::Make( |
| { paintAlpha, paintAlpha, paintAlpha, paintAlpha }, |
| GrConstColorProcessor::InputMode::kModulateRGBA)); |
| } |
| } else { |
| // The shader's FP sees the paint *unpremul* color |
| SkPMColor4f origColorAsPM = { origColor.fR, origColor.fG, origColor.fB, origColor.fA }; |
| grPaint->setColor4f(origColorAsPM); |
| grPaint->addColorFragmentProcessor(std::move(shaderFP)); |
| } |
| } else { |
| if (primColorMode) { |
| // There is a blend between the primitive color and the paint color. The blend considers |
| // the opaque paint color. The paint's alpha is applied to the post-blended color. |
| SkPMColor4f opaqueColor = origColor.makeOpaque().premul(); |
| auto processor = GrConstColorProcessor::Make(opaqueColor, |
| GrConstColorProcessor::InputMode::kIgnore); |
| processor = GrXfermodeFragmentProcessor::MakeFromSrcProcessor(std::move(processor), |
| *primColorMode); |
| if (processor) { |
| grPaint->addColorFragmentProcessor(std::move(processor)); |
| } |
| |
| grPaint->setColor4f(opaqueColor); |
| |
| // We can ignore origColor here - alpha is unchanged by gamma |
| float paintAlpha = skPaint.getColor4f().fA; |
| if (1.0f != paintAlpha) { |
| // No gamut conversion - paintAlpha is a (linear) alpha value, splatted to all |
| // color channels. It's value should be treated as the same in ANY color space. |
| grPaint->addColorFragmentProcessor(GrConstColorProcessor::Make( |
| { paintAlpha, paintAlpha, paintAlpha, paintAlpha }, |
| GrConstColorProcessor::InputMode::kModulateRGBA)); |
| } |
| } else { |
| // No shader, no primitive color. |
| grPaint->setColor4f(origColor.premul()); |
| applyColorFilterToPaintColor = true; |
| } |
| } |
| |
| SkColorFilter* colorFilter = skPaint.getColorFilter(); |
| if (colorFilter) { |
| if (applyColorFilterToPaintColor) { |
| SkColorSpace* dstCS = dstColorInfo.colorSpace(); |
| grPaint->setColor4f(colorFilter->filterColor4f(origColor, dstCS, dstCS).premul()); |
| } else { |
| auto cfFP = colorFilter->asFragmentProcessor(context, dstColorInfo); |
| if (cfFP) { |
| grPaint->addColorFragmentProcessor(std::move(cfFP)); |
| } else { |
| return false; |
| } |
| } |
| } |
| |
| SkMaskFilterBase* maskFilter = as_MFB(skPaint.getMaskFilter()); |
| if (maskFilter) { |
| // We may have set this before passing to the SkShader. |
| fpArgs.fInputColorIsOpaque = false; |
| if (auto mfFP = maskFilter->asFragmentProcessor(fpArgs)) { |
| grPaint->addCoverageFragmentProcessor(std::move(mfFP)); |
| } |
| } |
| |
| // When the xfermode is null on the SkPaint (meaning kSrcOver) we need the XPFactory field on |
| // the GrPaint to also be null (also kSrcOver). |
| SkASSERT(!grPaint->getXPFactory()); |
| if (!skPaint.isSrcOver()) { |
| grPaint->setXPFactory(SkBlendMode_AsXPFactory(skPaint.getBlendMode())); |
| } |
| |
| #ifndef SK_IGNORE_GPU_DITHER |
| // Conservative default, in case GrPixelConfigToColorType() fails. |
| GrColorType ct = dstColorInfo.colorType(); |
| if (SkPaintPriv::ShouldDither(skPaint, GrColorTypeToSkColorType(ct)) && |
| grPaint->numColorFragmentProcessors() > 0) { |
| int32_t ditherRange = dither_range_type_for_config(ct); |
| if (ditherRange >= 0) { |
| static int ditherIndex = GrSkSLFP::NewIndex(); |
| auto ditherFP = GrSkSLFP::Make(context, ditherIndex, "Dither", SKSL_DITHER_SRC, |
| &ditherRange, sizeof(ditherRange)); |
| if (ditherFP) { |
| grPaint->addColorFragmentProcessor(std::move(ditherFP)); |
| } |
| } |
| } |
| #endif |
| if (GrColorTypeClampType(dstColorInfo.colorType()) == GrClampType::kManual) { |
| if (grPaint->numColorFragmentProcessors()) { |
| grPaint->addColorFragmentProcessor(GrSaturateProcessor::Make()); |
| } else { |
| auto color = grPaint->getColor4f(); |
| grPaint->setColor4f({SkTPin(color.fR, 0.f, 1.f), |
| SkTPin(color.fG, 0.f, 1.f), |
| SkTPin(color.fB, 0.f, 1.f), |
| SkTPin(color.fA, 0.f, 1.f)}); |
| } |
| } |
| return true; |
| } |
| |
| bool SkPaintToGrPaint(GrRecordingContext* context, const GrColorInfo& dstColorInfo, |
| const SkPaint& skPaint, const SkMatrix& viewM, GrPaint* grPaint) { |
| return skpaint_to_grpaint_impl(context, dstColorInfo, skPaint, viewM, nullptr, nullptr, |
| grPaint); |
| } |
| |
| /** Replaces the SkShader (if any) on skPaint with the passed in GrFragmentProcessor. */ |
| bool SkPaintToGrPaintReplaceShader(GrRecordingContext* context, |
| const GrColorInfo& dstColorInfo, |
| const SkPaint& skPaint, |
| std::unique_ptr<GrFragmentProcessor> shaderFP, |
| GrPaint* grPaint) { |
| if (!shaderFP) { |
| return false; |
| } |
| return skpaint_to_grpaint_impl(context, dstColorInfo, skPaint, SkMatrix::I(), &shaderFP, |
| nullptr, grPaint); |
| } |
| |
| /** Ignores the SkShader (if any) on skPaint. */ |
| bool SkPaintToGrPaintNoShader(GrRecordingContext* context, |
| const GrColorInfo& dstColorInfo, |
| const SkPaint& skPaint, |
| GrPaint* grPaint) { |
| // Use a ptr to a nullptr to to indicate that the SkShader is ignored and not replaced. |
| std::unique_ptr<GrFragmentProcessor> nullShaderFP(nullptr); |
| return skpaint_to_grpaint_impl(context, dstColorInfo, skPaint, SkMatrix::I(), &nullShaderFP, |
| nullptr, grPaint); |
| } |
| |
| /** Blends the SkPaint's shader (or color if no shader) with a per-primitive color which must |
| be setup as a vertex attribute using the specified SkBlendMode. */ |
| bool SkPaintToGrPaintWithXfermode(GrRecordingContext* context, |
| const GrColorInfo& dstColorInfo, |
| const SkPaint& skPaint, |
| const SkMatrix& viewM, |
| SkBlendMode primColorMode, |
| GrPaint* grPaint) { |
| return skpaint_to_grpaint_impl(context, dstColorInfo, skPaint, viewM, nullptr, &primColorMode, |
| grPaint); |
| } |
| |
| bool SkPaintToGrPaintWithTexture(GrRecordingContext* context, |
| const GrColorInfo& dstColorInfo, |
| const SkPaint& paint, |
| const SkMatrix& viewM, |
| std::unique_ptr<GrFragmentProcessor> fp, |
| bool textureIsAlphaOnly, |
| GrPaint* grPaint) { |
| std::unique_ptr<GrFragmentProcessor> shaderFP; |
| if (textureIsAlphaOnly) { |
| if (const auto* shader = as_SB(paint.getShader())) { |
| shaderFP = shader->asFragmentProcessor( |
| GrFPArgs(context, &viewM, paint.getFilterQuality(), &dstColorInfo)); |
| if (!shaderFP) { |
| return false; |
| } |
| std::unique_ptr<GrFragmentProcessor> fpSeries[] = { std::move(shaderFP), std::move(fp) }; |
| shaderFP = GrFragmentProcessor::RunInSeries(fpSeries, 2); |
| } else { |
| shaderFP = GrFragmentProcessor::MakeInputPremulAndMulByOutput(std::move(fp)); |
| } |
| } else { |
| if (paint.getColor4f().isOpaque()) { |
| shaderFP = GrFragmentProcessor::OverrideInput(std::move(fp), SK_PMColor4fWHITE, false); |
| } else { |
| shaderFP = GrFragmentProcessor::MulChildByInputAlpha(std::move(fp)); |
| } |
| } |
| |
| return SkPaintToGrPaintReplaceShader(context, dstColorInfo, paint, std::move(shaderFP), |
| grPaint); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| GrSamplerState::Filter GrSkFilterQualityToGrFilterMode(int imageWidth, int imageHeight, |
| SkFilterQuality paintFilterQuality, |
| const SkMatrix& viewM, |
| const SkMatrix& localM, |
| bool sharpenMipmappedTextures, |
| bool* doBicubic) { |
| *doBicubic = false; |
| if (imageWidth <= 1 && imageHeight <= 1) { |
| return GrSamplerState::Filter::kNearest; |
| } |
| switch (paintFilterQuality) { |
| case kNone_SkFilterQuality: |
| return GrSamplerState::Filter::kNearest; |
| case kLow_SkFilterQuality: |
| return GrSamplerState::Filter::kBilerp; |
| case kMedium_SkFilterQuality: { |
| SkMatrix matrix; |
| matrix.setConcat(viewM, localM); |
| // With sharp mips, we bias lookups by -0.5. That means our final LOD is >= 0 until the |
| // computed LOD is >= 0.5. At what scale factor does a texture get an LOD of 0.5? |
| // |
| // Want: 0 = log2(1/s) - 0.5 |
| // 0.5 = log2(1/s) |
| // 2^0.5 = 1/s |
| // 1/2^0.5 = s |
| // 2^0.5/2 = s |
| SkScalar mipScale = sharpenMipmappedTextures ? SK_ScalarRoot2Over2 : SK_Scalar1; |
| if (matrix.getMinScale() < mipScale) { |
| return GrSamplerState::Filter::kMipMap; |
| } else { |
| // Don't trigger MIP level generation unnecessarily. |
| return GrSamplerState::Filter::kBilerp; |
| } |
| } |
| case kHigh_SkFilterQuality: { |
| SkMatrix matrix; |
| matrix.setConcat(viewM, localM); |
| GrSamplerState::Filter textureFilterMode; |
| *doBicubic = GrBicubicEffect::ShouldUseBicubic(matrix, &textureFilterMode); |
| return textureFilterMode; |
| } |
| } |
| SkUNREACHABLE; |
| } |
