| /* |
| * 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 "GrPipelineBuilder.h" |
| #include "GrGpuResourcePriv.h" |
| #include "GrSWMaskHelper.h" |
| #include "GrTextureProvider.h" |
| #include "batches/GrRectBatchFactory.h" |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| bool 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. |
| return !args.fShape->style().applies() && SkToBool(fTexProvider); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| 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); |
| shapeDevBounds.roundOut(devBounds); |
| return true; |
| } |
| |
| // Gets the shape bounds, the clip bounds, and the intersection (if any). Returns false if there |
| // is no intersection. |
| static bool get_shape_and_clip_bounds(int width, int height, |
| 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(width, 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(GrDrawContext* drawContext, |
| const GrPaint& paint, |
| const GrUserStencilSettings& userStencilSettings, |
| const GrClip& clip, |
| const SkMatrix& viewMatrix, |
| const SkRect& rect, |
| const SkMatrix& localMatrix) { |
| SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(paint.getColor(), |
| viewMatrix, rect, |
| nullptr, &localMatrix)); |
| |
| GrPipelineBuilder pipelineBuilder(paint, drawContext->mustUseHWAA(paint)); |
| pipelineBuilder.setUserStencil(&userStencilSettings); |
| |
| drawContext->drawBatch(pipelineBuilder, clip, batch); |
| } |
| |
| void GrSoftwarePathRenderer::DrawAroundInvPath(GrDrawContext* drawContext, |
| const 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(drawContext, paint, userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| if (devClipBounds.fLeft < devPathBounds.fLeft) { |
| rect.iset(devClipBounds.fLeft, devPathBounds.fTop, |
| devPathBounds.fLeft, devPathBounds.fBottom); |
| DrawNonAARect(drawContext, paint, userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| if (devClipBounds.fRight > devPathBounds.fRight) { |
| rect.iset(devPathBounds.fRight, devPathBounds.fTop, |
| devClipBounds.fRight, devPathBounds.fBottom); |
| DrawNonAARect(drawContext, paint, userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| if (devClipBounds.fBottom > devPathBounds.fBottom) { |
| rect.iset(devClipBounds.fLeft, devPathBounds.fBottom, |
| devClipBounds.fRight, devClipBounds.fBottom); |
| DrawNonAARect(drawContext, paint, userStencilSettings, clip, |
| SkMatrix::I(), rect, invert); |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // return true on success; false on failure |
| bool GrSoftwarePathRenderer::onDrawPath(const DrawPathArgs& args) { |
| GR_AUDIT_TRAIL_AUTO_FRAME(args.fDrawContext->auditTrail(), |
| "GrSoftwarePathRenderer::onDrawPath"); |
| if (!fTexProvider) { |
| return false; |
| } |
| |
| // We really need to know if the shape will be inverse filled or not |
| bool inverseFilled = false; |
| SkTLazy<GrShape> tmpShape; |
| SkASSERT(!args.fShape->style().applies()); |
| inverseFilled = args.fShape->inverseFilled(); |
| |
| 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() && args.fAntiAlias; |
| |
| if (!get_shape_and_clip_bounds(args.fDrawContext->width(), args.fDrawContext->height(), |
| *args.fClip, *args.fShape, |
| *args.fViewMatrix, &unclippedDevShapeBounds, |
| &clippedDevShapeBounds, |
| &devClipBounds)) { |
| if (inverseFilled) { |
| DrawAroundInvPath(args.fDrawContext, *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(); |
| int unclippedArea = unclippedWidth * unclippedHeight; |
| int clippedArea = clippedDevShapeBounds.width() * clippedDevShapeBounds.height(); |
| int maxTextureSize = args.fDrawContext->caps()->maxTextureSize(); |
| if (unclippedArea > 2 * clippedArea || unclippedWidth > maxTextureSize || |
| unclippedHeight > maxTextureSize) { |
| useCache = false; |
| } else { |
| boundsForMask = &unclippedDevShapeBounds; |
| } |
| } |
| |
| GrUniqueKey maskKey; |
| struct KeyData { |
| SkScalar fFractionalTranslateX; |
| SkScalar fFractionalTranslateY; |
| }; |
| |
| 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); |
| 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; |
| static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain(); |
| GrUniqueKey::Builder builder(&maskKey, kDomain, 5 + args.fShape->unstyledKeySize()); |
| builder[0] = SkFloat2Bits(sx); |
| builder[1] = SkFloat2Bits(sy); |
| builder[2] = SkFloat2Bits(kx); |
| builder[3] = SkFloat2Bits(ky); |
| builder[4] = fracX | (fracY >> 8); |
| args.fShape->writeUnstyledKey(&builder[5]); |
| } |
| |
| sk_sp<GrTexture> texture; |
| if (useCache) { |
| texture.reset(args.fResourceProvider->findAndRefTextureByUniqueKey(maskKey)); |
| } |
| if (!texture) { |
| GrSWMaskHelper::TextureType type = useCache ? GrSWMaskHelper::TextureType::kExactFit |
| : GrSWMaskHelper::TextureType::kApproximateFit; |
| texture.reset(GrSWMaskHelper::DrawShapeMaskToTexture(fTexProvider, *args.fShape, |
| *boundsForMask, args.fAntiAlias, |
| type, args.fViewMatrix)); |
| if (!texture) { |
| return false; |
| } |
| if (useCache) { |
| texture->resourcePriv().setUniqueKey(maskKey); |
| } |
| } |
| |
| GrSWMaskHelper::DrawToTargetWithShapeMask(texture.get(), args.fDrawContext, *args.fPaint, |
| *args.fUserStencilSettings, |
| *args.fClip, *args.fViewMatrix, |
| SkIPoint {boundsForMask->fLeft, boundsForMask->fTop}, |
| *boundsForMask); |
| |
| if (inverseFilled) { |
| DrawAroundInvPath(args.fDrawContext, *args.fPaint, *args.fUserStencilSettings, |
| *args.fClip, |
| *args.fViewMatrix, devClipBounds, unclippedDevShapeBounds); |
| } |
| |
| return true; |
| } |
