| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrSoftwarePathRenderer.h" |
| #include "GrAuditTrail.h" |
| #include "GrClip.h" |
| #include "GrContextPriv.h" |
| #include "GrDeferredProxyUploader.h" |
| #include "GrGpuResourcePriv.h" |
| #include "GrOpFlushState.h" |
| #include "GrOpList.h" |
| #include "GrProxyProvider.h" |
| #include "GrSWMaskHelper.h" |
| #include "GrShape.h" |
| #include "GrSurfaceContextPriv.h" |
| #include "SkMakeUnique.h" |
| #include "SkSemaphore.h" |
| #include "SkTaskGroup.h" |
| #include "SkTraceEvent.h" |
| #include "ops/GrDrawOp.h" |
| #include "ops/GrFillRectOp.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| GrPathRenderer::CanDrawPath |
| GrSoftwarePathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const { |
| // Pass on any style that applies. The caller will apply the style if a suitable renderer is |
| // not found and try again with the new GrShape. |
| if (!args.fShape->style().applies() && SkToBool(fProxyProvider) && |
| (args.fAAType == GrAAType::kCoverage || args.fAAType == GrAAType::kNone)) { |
| // This is the fallback renderer for when a path is too complicated for the GPU ones. |
| return CanDrawPath::kAsBackup; |
| } |
| return CanDrawPath::kNo; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| static bool get_unclipped_shape_dev_bounds(const GrShape& shape, const SkMatrix& matrix, |
| SkIRect* devBounds) { |
| SkRect shapeBounds = shape.styledBounds(); |
| if (shapeBounds.isEmpty()) { |
| return false; |
| } |
| SkRect shapeDevBounds; |
| matrix.mapRect(&shapeDevBounds, shapeBounds); |
| // Even though these are "unclipped" bounds we still clip to the int32_t range. |
| // This is the largest int32_t that is representable exactly as a float. The next 63 larger ints |
| // would round down to this value when cast to a float, but who really cares. |
| // INT32_MIN is exactly representable. |
| static constexpr int32_t kMaxInt = 2147483520; |
| if (!shapeDevBounds.intersect(SkRect::MakeLTRB(INT32_MIN, INT32_MIN, kMaxInt, kMaxInt))) { |
| return false; |
| } |
| // Make sure that the resulting SkIRect can have representable width and height |
| if (SkScalarRoundToInt(shapeDevBounds.width()) > kMaxInt || |
| SkScalarRoundToInt(shapeDevBounds.height()) > kMaxInt) { |
| return false; |
| } |
| shapeDevBounds.roundOut(devBounds); |
| return true; |
| } |
| |
| // Gets the shape bounds, the clip bounds, and the intersection (if any). Returns false if there |
| // is no intersection. |
| bool GrSoftwarePathRenderer::GetShapeAndClipBounds(GrRenderTargetContext* renderTargetContext, |
| const GrClip& clip, |
| const GrShape& shape, |
| const SkMatrix& matrix, |
| SkIRect* unclippedDevShapeBounds, |
| SkIRect* clippedDevShapeBounds, |
| SkIRect* devClipBounds) { |
| // compute bounds as intersection of rt size, clip, and path |
| clip.getConservativeBounds(renderTargetContext->width(), |
| renderTargetContext->height(), |
| devClipBounds); |
| |
| if (!get_unclipped_shape_dev_bounds(shape, matrix, unclippedDevShapeBounds)) { |
| *unclippedDevShapeBounds = SkIRect::EmptyIRect(); |
| *clippedDevShapeBounds = SkIRect::EmptyIRect(); |
| return false; |
| } |
| if (!clippedDevShapeBounds->intersect(*devClipBounds, *unclippedDevShapeBounds)) { |
| *clippedDevShapeBounds = SkIRect::EmptyIRect(); |
| return false; |
| } |
| return true; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| void GrSoftwarePathRenderer::DrawNonAARect(GrRenderTargetContext* renderTargetContext, |
| GrPaint&& paint, |
| const GrUserStencilSettings& userStencilSettings, |
| const GrClip& clip, |
| const SkMatrix& viewMatrix, |
| const SkRect& rect, |
| const SkMatrix& localMatrix) { |
| GrContext* context = renderTargetContext->surfPriv().getContext(); |
| renderTargetContext->addDrawOp(clip, |
| GrFillRectOp::MakeWithLocalMatrix( |
| context, std::move(paint), GrAAType::kNone, viewMatrix, |
| localMatrix, rect, &userStencilSettings)); |
| } |
| |
| void GrSoftwarePathRenderer::DrawAroundInvPath(GrRenderTargetContext* renderTargetContext, |
| GrPaint&& paint, |
| const GrUserStencilSettings& userStencilSettings, |
| const GrClip& clip, |
| const SkMatrix& viewMatrix, |
| const SkIRect& devClipBounds, |
| const SkIRect& devPathBounds) { |
| SkMatrix invert; |
| if (!viewMatrix.invert(&invert)) { |
| return; |
| } |
| |
| SkRect rect; |
| if (devClipBounds.fTop < devPathBounds.fTop) { |
| rect.iset(devClipBounds.fLeft, devClipBounds.fTop, |
| devClipBounds.fRight, devPathBounds.fTop); |
| DrawNonAARect(renderTargetContext, GrPaint::Clone(paint), userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| if (devClipBounds.fLeft < devPathBounds.fLeft) { |
| rect.iset(devClipBounds.fLeft, devPathBounds.fTop, |
| devPathBounds.fLeft, devPathBounds.fBottom); |
| DrawNonAARect(renderTargetContext, GrPaint::Clone(paint), userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| if (devClipBounds.fRight > devPathBounds.fRight) { |
| rect.iset(devPathBounds.fRight, devPathBounds.fTop, |
| devClipBounds.fRight, devPathBounds.fBottom); |
| DrawNonAARect(renderTargetContext, GrPaint::Clone(paint), userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| if (devClipBounds.fBottom > devPathBounds.fBottom) { |
| rect.iset(devClipBounds.fLeft, devPathBounds.fBottom, |
| devClipBounds.fRight, devClipBounds.fBottom); |
| DrawNonAARect(renderTargetContext, std::move(paint), userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| } |
| |
| void GrSoftwarePathRenderer::DrawToTargetWithShapeMask( |
| sk_sp<GrTextureProxy> proxy, |
| GrRenderTargetContext* renderTargetContext, |
| GrPaint&& paint, |
| const GrUserStencilSettings& userStencilSettings, |
| const GrClip& clip, |
| const SkMatrix& viewMatrix, |
| const SkIPoint& textureOriginInDeviceSpace, |
| const SkIRect& deviceSpaceRectToDraw) { |
| SkMatrix invert; |
| if (!viewMatrix.invert(&invert)) { |
| return; |
| } |
| |
| SkRect dstRect = SkRect::Make(deviceSpaceRectToDraw); |
| |
| // We use device coords to compute the texture coordinates. We take the device coords and apply |
| // a translation so that the top-left of the device bounds maps to 0,0, and then a scaling |
| // matrix to normalized coords. |
| SkMatrix maskMatrix = SkMatrix::MakeTrans(SkIntToScalar(-textureOriginInDeviceSpace.fX), |
| SkIntToScalar(-textureOriginInDeviceSpace.fY)); |
| maskMatrix.preConcat(viewMatrix); |
| paint.addCoverageFragmentProcessor(GrSimpleTextureEffect::Make( |
| std::move(proxy), maskMatrix, GrSamplerState::Filter::kNearest)); |
| DrawNonAARect(renderTargetContext, std::move(paint), userStencilSettings, clip, SkMatrix::I(), |
| dstRect, invert); |
| } |
| |
| static sk_sp<GrTextureProxy> make_deferred_mask_texture_proxy(GrContext* context, SkBackingFit fit, |
| int width, int height) { |
| GrProxyProvider* proxyProvider = context->priv().proxyProvider(); |
| |
| GrSurfaceDesc desc; |
| desc.fWidth = width; |
| desc.fHeight = height; |
| desc.fConfig = kAlpha_8_GrPixelConfig; |
| |
| const GrBackendFormat format = |
| context->priv().caps()->getBackendFormatFromColorType(kAlpha_8_SkColorType); |
| |
| // MDB TODO: We're going to fill this proxy with an ASAP upload (which is out of order wrt to |
| // ops), so it can't have any pending IO. |
| return proxyProvider->createProxy(format, desc, kTopLeft_GrSurfaceOrigin, fit, SkBudgeted::kYes, |
| GrInternalSurfaceFlags::kNoPendingIO); |
| } |
| |
| namespace { |
| |
| /** |
| * Payload class for use with GrTDeferredProxyUploader. The software path renderer only draws |
| * a single path into the mask texture. This stores all of the information needed by the worker |
| * thread's call to drawShape (see below, in onDrawPath). |
| */ |
| class SoftwarePathData { |
| public: |
| SoftwarePathData(const SkIRect& maskBounds, const SkMatrix& viewMatrix, const GrShape& shape, |
| GrAA aa) |
| : fMaskBounds(maskBounds) |
| , fViewMatrix(viewMatrix) |
| , fShape(shape) |
| , fAA(aa) {} |
| |
| const SkIRect& getMaskBounds() const { return fMaskBounds; } |
| const SkMatrix* getViewMatrix() const { return &fViewMatrix; } |
| const GrShape& getShape() const { return fShape; } |
| GrAA getAA() const { return fAA; } |
| |
| private: |
| SkIRect fMaskBounds; |
| SkMatrix fViewMatrix; |
| GrShape fShape; |
| GrAA fAA; |
| }; |
| |
| // When the SkPathRef genID changes, invalidate a corresponding GrResource described by key. |
| class PathInvalidator : public SkPathRef::GenIDChangeListener { |
| public: |
| PathInvalidator(const GrUniqueKey& key, uint32_t contextUniqueID) |
| : fMsg(key, contextUniqueID) {} |
| |
| private: |
| GrUniqueKeyInvalidatedMessage fMsg; |
| |
| void onChange() override { |
| SkMessageBus<GrUniqueKeyInvalidatedMessage>::Post(fMsg); |
| } |
| }; |
| |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // return true on success; false on failure |
| bool GrSoftwarePathRenderer::onDrawPath(const DrawPathArgs& args) { |
| GR_AUDIT_TRAIL_AUTO_FRAME(args.fRenderTargetContext->auditTrail(), |
| "GrSoftwarePathRenderer::onDrawPath"); |
| if (!fProxyProvider) { |
| return false; |
| } |
| |
| SkASSERT(!args.fShape->style().applies()); |
| // We really need to know if the shape will be inverse filled or not |
| // If the path is hairline, ignore inverse fill. |
| bool inverseFilled = args.fShape->inverseFilled() && |
| !IsStrokeHairlineOrEquivalent(args.fShape->style(), |
| *args.fViewMatrix, nullptr); |
| |
| SkIRect unclippedDevShapeBounds, clippedDevShapeBounds, devClipBounds; |
| // To prevent overloading the cache with entries during animations we limit the cache of masks |
| // to cases where the matrix preserves axis alignment. |
| bool useCache = fAllowCaching && !inverseFilled && args.fViewMatrix->preservesAxisAlignment() && |
| args.fShape->hasUnstyledKey() && GrAAType::kCoverage == args.fAAType; |
| |
| if (!GetShapeAndClipBounds(args.fRenderTargetContext, |
| *args.fClip, *args.fShape, |
| *args.fViewMatrix, &unclippedDevShapeBounds, |
| &clippedDevShapeBounds, |
| &devClipBounds)) { |
| if (inverseFilled) { |
| DrawAroundInvPath(args.fRenderTargetContext, std::move(args.fPaint), |
| *args.fUserStencilSettings, *args.fClip, *args.fViewMatrix, |
| devClipBounds, unclippedDevShapeBounds); |
| } |
| return true; |
| } |
| |
| const SkIRect* boundsForMask = &clippedDevShapeBounds; |
| if (useCache) { |
| // Use the cache only if >50% of the path is visible. |
| int unclippedWidth = unclippedDevShapeBounds.width(); |
| int unclippedHeight = unclippedDevShapeBounds.height(); |
| int64_t unclippedArea = sk_64_mul(unclippedWidth, unclippedHeight); |
| int64_t clippedArea = sk_64_mul(clippedDevShapeBounds.width(), |
| clippedDevShapeBounds.height()); |
| int maxTextureSize = args.fRenderTargetContext->caps()->maxTextureSize(); |
| if (unclippedArea > 2 * clippedArea || unclippedWidth > maxTextureSize || |
| unclippedHeight > maxTextureSize) { |
| useCache = false; |
| } else { |
| boundsForMask = &unclippedDevShapeBounds; |
| } |
| } |
| |
| GrUniqueKey maskKey; |
| if (useCache) { |
| // We require the upper left 2x2 of the matrix to match exactly for a cache hit. |
| SkScalar sx = args.fViewMatrix->get(SkMatrix::kMScaleX); |
| SkScalar sy = args.fViewMatrix->get(SkMatrix::kMScaleY); |
| SkScalar kx = args.fViewMatrix->get(SkMatrix::kMSkewX); |
| SkScalar ky = args.fViewMatrix->get(SkMatrix::kMSkewY); |
| static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain(); |
| GrUniqueKey::Builder builder(&maskKey, kDomain, 5 + args.fShape->unstyledKeySize(), |
| "SW Path Mask"); |
| #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK |
| // Fractional translate does not affect caching on Android. This is done for better cache |
| // hit ratio and speed, but it is matching HWUI behavior, which doesn't consider the matrix |
| // at all when caching paths. |
| SkFixed fracX = 0; |
| SkFixed fracY = 0; |
| #else |
| SkScalar tx = args.fViewMatrix->get(SkMatrix::kMTransX); |
| SkScalar ty = args.fViewMatrix->get(SkMatrix::kMTransY); |
| // Allow 8 bits each in x and y of subpixel positioning. |
| SkFixed fracX = SkScalarToFixed(SkScalarFraction(tx)) & 0x0000FF00; |
| SkFixed fracY = SkScalarToFixed(SkScalarFraction(ty)) & 0x0000FF00; |
| #endif |
| builder[0] = SkFloat2Bits(sx); |
| builder[1] = SkFloat2Bits(sy); |
| builder[2] = SkFloat2Bits(kx); |
| builder[3] = SkFloat2Bits(ky); |
| // Distinguish between hairline and filled paths. For hairlines, we also need to include |
| // the cap. (SW grows hairlines by 0.5 pixel with round and square caps). Note that |
| // stroke-and-fill of hairlines is turned into pure fill by SkStrokeRec, so this covers |
| // all cases we might see. |
| uint32_t styleBits = args.fShape->style().isSimpleHairline() ? |
| ((args.fShape->style().strokeRec().getCap() << 1) | 1) : 0; |
| builder[4] = fracX | (fracY >> 8) | (styleBits << 16); |
| args.fShape->writeUnstyledKey(&builder[5]); |
| } |
| |
| sk_sp<GrTextureProxy> proxy; |
| if (useCache) { |
| proxy = fProxyProvider->findOrCreateProxyByUniqueKey(maskKey, kTopLeft_GrSurfaceOrigin); |
| } |
| if (!proxy) { |
| SkBackingFit fit = useCache ? SkBackingFit::kExact : SkBackingFit::kApprox; |
| GrAA aa = GrAAType::kCoverage == args.fAAType ? GrAA::kYes : GrAA::kNo; |
| |
| SkTaskGroup* taskGroup = args.fContext->priv().getTaskGroup(); |
| if (taskGroup) { |
| proxy = make_deferred_mask_texture_proxy(args.fContext, fit, |
| boundsForMask->width(), |
| boundsForMask->height()); |
| if (!proxy) { |
| return false; |
| } |
| |
| auto uploader = skstd::make_unique<GrTDeferredProxyUploader<SoftwarePathData>>( |
| *boundsForMask, *args.fViewMatrix, *args.fShape, aa); |
| GrTDeferredProxyUploader<SoftwarePathData>* uploaderRaw = uploader.get(); |
| |
| auto drawAndUploadMask = [uploaderRaw] { |
| TRACE_EVENT0("skia", "Threaded SW Mask Render"); |
| GrSWMaskHelper helper(uploaderRaw->getPixels()); |
| if (helper.init(uploaderRaw->data().getMaskBounds())) { |
| helper.drawShape(uploaderRaw->data().getShape(), |
| *uploaderRaw->data().getViewMatrix(), |
| SkRegion::kReplace_Op, uploaderRaw->data().getAA(), 0xFF); |
| } else { |
| SkDEBUGFAIL("Unable to allocate SW mask."); |
| } |
| uploaderRaw->signalAndFreeData(); |
| }; |
| taskGroup->add(std::move(drawAndUploadMask)); |
| proxy->texPriv().setDeferredUploader(std::move(uploader)); |
| } else { |
| GrSWMaskHelper helper; |
| if (!helper.init(*boundsForMask)) { |
| return false; |
| } |
| helper.drawShape(*args.fShape, *args.fViewMatrix, SkRegion::kReplace_Op, aa, 0xFF); |
| proxy = helper.toTextureProxy(args.fContext, fit); |
| } |
| |
| if (!proxy) { |
| return false; |
| } |
| if (useCache) { |
| SkASSERT(proxy->origin() == kTopLeft_GrSurfaceOrigin); |
| fProxyProvider->assignUniqueKeyToProxy(maskKey, proxy.get()); |
| args.fShape->addGenIDChangeListener( |
| sk_make_sp<PathInvalidator>(maskKey, args.fContext->priv().contextID())); |
| } |
| } |
| if (inverseFilled) { |
| DrawAroundInvPath(args.fRenderTargetContext, GrPaint::Clone(args.fPaint), |
| *args.fUserStencilSettings, *args.fClip, *args.fViewMatrix, devClipBounds, |
| unclippedDevShapeBounds); |
| } |
| DrawToTargetWithShapeMask( |
| std::move(proxy), args.fRenderTargetContext, std::move(args.fPaint), |
| *args.fUserStencilSettings, *args.fClip, *args.fViewMatrix, |
| SkIPoint{boundsForMask->fLeft, boundsForMask->fTop}, *boundsForMask); |
| |
| return true; |
| } |