| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkGpuDevice.h" |
| #include "GrBlurUtils.h" |
| #include "GrCaps.h" |
| #include "GrColorSpaceXform.h" |
| #include "GrRenderTargetContext.h" |
| #include "GrShape.h" |
| #include "GrStyle.h" |
| #include "GrTextureAdjuster.h" |
| #include "GrTextureMaker.h" |
| #include "SkDraw.h" |
| #include "SkGr.h" |
| #include "SkMaskFilterBase.h" |
| #include "effects/GrBicubicEffect.h" |
| #include "effects/GrSimpleTextureEffect.h" |
| #include "effects/GrTextureDomain.h" |
| |
| static inline bool use_shader(bool textureIsAlphaOnly, const SkPaint& paint) { |
| return textureIsAlphaOnly && paint.getShader(); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| // Helper functions for dropping src rect constraint in bilerp mode. |
| |
| static const SkScalar kColorBleedTolerance = 0.001f; |
| |
| static bool has_aligned_samples(const SkRect& srcRect, const SkRect& transformedRect) { |
| // detect pixel disalignment |
| if (SkScalarAbs(SkScalarRoundToScalar(transformedRect.left()) - transformedRect.left()) < kColorBleedTolerance && |
| SkScalarAbs(SkScalarRoundToScalar(transformedRect.top()) - transformedRect.top()) < kColorBleedTolerance && |
| SkScalarAbs(transformedRect.width() - srcRect.width()) < kColorBleedTolerance && |
| SkScalarAbs(transformedRect.height() - srcRect.height()) < kColorBleedTolerance) { |
| return true; |
| } |
| return false; |
| } |
| |
| static bool may_color_bleed(const SkRect& srcRect, |
| const SkRect& transformedRect, |
| const SkMatrix& m, |
| GrFSAAType fsaaType) { |
| // Only gets called if has_aligned_samples returned false. |
| // So we can assume that sampling is axis aligned but not texel aligned. |
| SkASSERT(!has_aligned_samples(srcRect, transformedRect)); |
| SkRect innerSrcRect(srcRect), innerTransformedRect, outerTransformedRect(transformedRect); |
| if (GrFSAAType::kUnifiedMSAA == fsaaType) { |
| innerSrcRect.inset(SK_Scalar1, SK_Scalar1); |
| } else { |
| innerSrcRect.inset(SK_ScalarHalf, SK_ScalarHalf); |
| } |
| m.mapRect(&innerTransformedRect, innerSrcRect); |
| |
| // The gap between outerTransformedRect and innerTransformedRect |
| // represents the projection of the source border area, which is |
| // problematic for color bleeding. We must check whether any |
| // destination pixels sample the border area. |
| outerTransformedRect.inset(kColorBleedTolerance, kColorBleedTolerance); |
| innerTransformedRect.outset(kColorBleedTolerance, kColorBleedTolerance); |
| SkIRect outer, inner; |
| outerTransformedRect.round(&outer); |
| innerTransformedRect.round(&inner); |
| // If the inner and outer rects round to the same result, it means the |
| // border does not overlap any pixel centers. Yay! |
| return inner != outer; |
| } |
| |
| static bool can_ignore_bilerp_constraint(const GrTextureProducer& producer, |
| const SkRect& srcRect, |
| const SkMatrix& srcRectToDeviceSpace, |
| GrFSAAType fsaaType) { |
| if (srcRectToDeviceSpace.rectStaysRect()) { |
| // sampling is axis-aligned |
| SkRect transformedRect; |
| srcRectToDeviceSpace.mapRect(&transformedRect, srcRect); |
| |
| if (has_aligned_samples(srcRect, transformedRect) || |
| !may_color_bleed(srcRect, transformedRect, srcRectToDeviceSpace, fsaaType)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Checks whether the paint is compatible with using GrRenderTargetContext::drawTexture. It is more |
| * efficient than the GrTextureProducer general case. |
| */ |
| static bool can_use_draw_texture(const SkPaint& paint) { |
| return (!paint.getColorFilter() && !paint.getShader() && !paint.getMaskFilter() && |
| !paint.getImageFilter() && paint.getFilterQuality() < kMedium_SkFilterQuality && |
| paint.getBlendMode() == SkBlendMode::kSrcOver); |
| } |
| |
| static void draw_texture(const SkPaint& paint, const SkMatrix& ctm, const SkRect* src, |
| const SkRect* dst, GrAA aa, SkCanvas::SrcRectConstraint constraint, |
| sk_sp<GrTextureProxy> proxy, SkAlphaType alphaType, |
| SkColorSpace* colorSpace, const GrClip& clip, GrRenderTargetContext* rtc) { |
| SkASSERT(!(SkToBool(src) && !SkToBool(dst))); |
| SkRect srcRect = src ? *src : SkRect::MakeWH(proxy->width(), proxy->height()); |
| SkRect dstRect = dst ? *dst : srcRect; |
| if (src && !SkRect::MakeIWH(proxy->width(), proxy->height()).contains(srcRect)) { |
| // Shrink the src rect to be within bounds and proportionately shrink the dst rect. |
| SkMatrix srcToDst; |
| srcToDst.setRectToRect(srcRect, dstRect, SkMatrix::kFill_ScaleToFit); |
| SkAssertResult(srcRect.intersect(SkRect::MakeIWH(proxy->width(), proxy->height()))); |
| srcToDst.mapRect(&dstRect, srcRect); |
| } |
| const GrColorSpaceInfo& dstInfo(rtc->colorSpaceInfo()); |
| auto textureXform = |
| GrColorSpaceXform::Make(colorSpace , alphaType, |
| dstInfo.colorSpace(), kPremul_SkAlphaType); |
| GrSamplerState::Filter filter; |
| switch (paint.getFilterQuality()) { |
| case kNone_SkFilterQuality: |
| filter = GrSamplerState::Filter::kNearest; |
| break; |
| case kLow_SkFilterQuality: |
| filter = GrSamplerState::Filter::kBilerp; |
| break; |
| case kMedium_SkFilterQuality: |
| case kHigh_SkFilterQuality: |
| SK_ABORT("Quality level not allowed."); |
| } |
| SkPMColor4f color; |
| if (GrPixelConfigIsAlphaOnly(proxy->config())) { |
| color = SkColor4fPrepForDst(paint.getColor4f(), dstInfo, *rtc->caps()).premul(); |
| } else { |
| float paintAlpha = paint.getColor4f().fA; |
| color = { paintAlpha, paintAlpha, paintAlpha, paintAlpha }; |
| } |
| GrQuadAAFlags aaFlags = aa == GrAA::kYes ? GrQuadAAFlags::kAll : GrQuadAAFlags::kNone; |
| rtc->drawTexture(clip, std::move(proxy), filter, color, srcRect, dstRect, aaFlags, constraint, |
| ctm, std::move(textureXform)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkGpuDevice::drawPinnedTextureProxy(sk_sp<GrTextureProxy> proxy, uint32_t pinnedUniqueID, |
| SkColorSpace* colorSpace, SkAlphaType alphaType, |
| const SkRect* srcRect, const SkRect* dstRect, |
| SkCanvas::SrcRectConstraint constraint, |
| const SkMatrix& viewMatrix, const SkPaint& paint) { |
| GrAA aa = GrAA(paint.isAntiAlias()); |
| if (can_use_draw_texture(paint)) { |
| draw_texture(paint, viewMatrix, srcRect, dstRect, aa, constraint, std::move(proxy), |
| alphaType, colorSpace, this->clip(), fRenderTargetContext.get()); |
| return; |
| } |
| GrTextureAdjuster adjuster(this->context(), std::move(proxy), alphaType, pinnedUniqueID, |
| colorSpace); |
| this->drawTextureProducer(&adjuster, srcRect, dstRect, constraint, viewMatrix, paint, false); |
| } |
| |
| void SkGpuDevice::drawTextureProducer(GrTextureProducer* producer, |
| const SkRect* srcRect, |
| const SkRect* dstRect, |
| SkCanvas::SrcRectConstraint constraint, |
| const SkMatrix& viewMatrix, |
| const SkPaint& paint, |
| bool attemptDrawTexture) { |
| if (attemptDrawTexture && can_use_draw_texture(paint)) { |
| GrAA aa = GrAA(paint.isAntiAlias()); |
| // We've done enough checks above to allow us to pass ClampNearest() and not check for |
| // scaling adjustments. |
| auto proxy = producer->refTextureProxyForParams(GrSamplerState::ClampNearest(), nullptr); |
| if (!proxy) { |
| return; |
| } |
| draw_texture(paint, viewMatrix, srcRect, dstRect, aa, constraint, std::move(proxy), |
| producer->alphaType(), producer->colorSpace(), this->clip(), |
| fRenderTargetContext.get()); |
| return; |
| } |
| |
| // This is the funnel for all non-tiled bitmap/image draw calls. Log a histogram entry. |
| SK_HISTOGRAM_BOOLEAN("DrawTiled", false); |
| |
| // Figure out the actual dst and src rect by clipping the src rect to the bounds of the |
| // adjuster. If the src rect is clipped then the dst rect must be recomputed. Also determine |
| // the matrix that maps the src rect to the dst rect. |
| SkRect clippedSrcRect; |
| SkRect clippedDstRect; |
| const SkRect srcBounds = SkRect::MakeIWH(producer->width(), producer->height()); |
| SkMatrix srcToDstMatrix; |
| if (srcRect) { |
| if (!dstRect) { |
| dstRect = &srcBounds; |
| } |
| if (!srcBounds.contains(*srcRect)) { |
| clippedSrcRect = *srcRect; |
| if (!clippedSrcRect.intersect(srcBounds)) { |
| return; |
| } |
| if (!srcToDstMatrix.setRectToRect(*srcRect, *dstRect, SkMatrix::kFill_ScaleToFit)) { |
| return; |
| } |
| srcToDstMatrix.mapRect(&clippedDstRect, clippedSrcRect); |
| } else { |
| clippedSrcRect = *srcRect; |
| clippedDstRect = *dstRect; |
| if (!srcToDstMatrix.setRectToRect(*srcRect, *dstRect, SkMatrix::kFill_ScaleToFit)) { |
| return; |
| } |
| } |
| } else { |
| clippedSrcRect = srcBounds; |
| if (dstRect) { |
| clippedDstRect = *dstRect; |
| if (!srcToDstMatrix.setRectToRect(srcBounds, *dstRect, SkMatrix::kFill_ScaleToFit)) { |
| return; |
| } |
| } else { |
| clippedDstRect = srcBounds; |
| srcToDstMatrix.reset(); |
| } |
| } |
| |
| // Now that we have both the view and srcToDst matrices, log our scale factor. |
| LogDrawScaleFactor(SkMatrix::Concat(viewMatrix, srcToDstMatrix), paint.getFilterQuality()); |
| |
| this->drawTextureProducerImpl(producer, clippedSrcRect, clippedDstRect, constraint, viewMatrix, |
| srcToDstMatrix, paint); |
| } |
| |
| void SkGpuDevice::drawTextureProducerImpl(GrTextureProducer* producer, |
| const SkRect& clippedSrcRect, |
| const SkRect& clippedDstRect, |
| SkCanvas::SrcRectConstraint constraint, |
| const SkMatrix& viewMatrix, |
| const SkMatrix& srcToDstMatrix, |
| const SkPaint& paint) { |
| // Specifying the texture coords as local coordinates is an attempt to enable more GrDrawOp |
| // combining by not baking anything about the srcRect, dstRect, or viewMatrix, into the texture |
| // FP. In the future this should be an opaque optimization enabled by the combination of |
| // GrDrawOp/GP and FP. |
| const SkMaskFilter* mf = paint.getMaskFilter(); |
| if (mf && as_MFB(mf)->hasFragmentProcessor()) { |
| mf = nullptr; |
| } |
| // The shader expects proper local coords, so we can't replace local coords with texture coords |
| // if the shader will be used. If we have a mask filter we will change the underlying geometry |
| // that is rendered. |
| bool canUseTextureCoordsAsLocalCoords = !use_shader(producer->isAlphaOnly(), paint) && !mf; |
| |
| bool doBicubic; |
| GrSamplerState::Filter fm = GrSkFilterQualityToGrFilterMode( |
| paint.getFilterQuality(), viewMatrix, srcToDstMatrix, |
| fContext->contextPriv().sharpenMipmappedTextures(), &doBicubic); |
| const GrSamplerState::Filter* filterMode = doBicubic ? nullptr : &fm; |
| |
| GrTextureProducer::FilterConstraint constraintMode; |
| if (SkCanvas::kFast_SrcRectConstraint == constraint) { |
| constraintMode = GrTextureAdjuster::kNo_FilterConstraint; |
| } else { |
| constraintMode = GrTextureAdjuster::kYes_FilterConstraint; |
| } |
| |
| // If we have to outset for AA then we will generate texture coords outside the src rect. The |
| // same happens for any mask filter that extends the bounds rendered in the dst. |
| // This is conservative as a mask filter does not have to expand the bounds rendered. |
| bool coordsAllInsideSrcRect = !paint.isAntiAlias() && !mf; |
| |
| // Check for optimization to drop the src rect constraint when on bilerp. |
| if (filterMode && GrSamplerState::Filter::kBilerp == *filterMode && |
| GrTextureAdjuster::kYes_FilterConstraint == constraintMode && coordsAllInsideSrcRect) { |
| SkMatrix combinedMatrix; |
| combinedMatrix.setConcat(viewMatrix, srcToDstMatrix); |
| if (can_ignore_bilerp_constraint(*producer, clippedSrcRect, combinedMatrix, |
| fRenderTargetContext->fsaaType())) { |
| constraintMode = GrTextureAdjuster::kNo_FilterConstraint; |
| } |
| } |
| |
| const SkMatrix* textureMatrix; |
| SkMatrix tempMatrix; |
| if (canUseTextureCoordsAsLocalCoords) { |
| textureMatrix = &SkMatrix::I(); |
| } else { |
| if (!srcToDstMatrix.invert(&tempMatrix)) { |
| return; |
| } |
| textureMatrix = &tempMatrix; |
| } |
| auto fp = producer->createFragmentProcessor(*textureMatrix, clippedSrcRect, constraintMode, |
| coordsAllInsideSrcRect, filterMode); |
| SkColorSpace* rtColorSpace = fRenderTargetContext->colorSpaceInfo().colorSpace(); |
| SkColorSpace* targetColorSpace = producer->targetColorSpace(); |
| SkColorSpace* dstColorSpace = SkToBool(rtColorSpace) ? rtColorSpace : targetColorSpace; |
| fp = GrColorSpaceXformEffect::Make(std::move(fp), producer->colorSpace(), producer->alphaType(), |
| dstColorSpace); |
| if (!fp) { |
| return; |
| } |
| |
| GrPaint grPaint; |
| if (!SkPaintToGrPaintWithTexture(fContext.get(), fRenderTargetContext->colorSpaceInfo(), paint, |
| viewMatrix, std::move(fp), producer->isAlphaOnly(), |
| &grPaint)) { |
| return; |
| } |
| GrAA aa = GrAA(paint.isAntiAlias()); |
| if (canUseTextureCoordsAsLocalCoords) { |
| fRenderTargetContext->fillRectToRect(this->clip(), std::move(grPaint), aa, viewMatrix, |
| clippedDstRect, clippedSrcRect); |
| return; |
| } |
| |
| if (!mf) { |
| fRenderTargetContext->drawRect(this->clip(), std::move(grPaint), aa, viewMatrix, |
| clippedDstRect); |
| return; |
| } |
| |
| GrShape shape(clippedDstRect, GrStyle::SimpleFill()); |
| |
| GrBlurUtils::drawShapeWithMaskFilter(this->context(), fRenderTargetContext.get(), this->clip(), |
| shape, std::move(grPaint), viewMatrix, mf); |
| } |
