| /* |
| * 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 "src/gpu/GrSWMaskHelper.h" |
| |
| #include "include/private/GrRecordingContext.h" |
| #include "src/gpu/GrBitmapTextureMaker.h" |
| #include "src/gpu/GrCaps.h" |
| #include "src/gpu/GrProxyProvider.h" |
| #include "src/gpu/GrRecordingContextPriv.h" |
| #include "src/gpu/GrSurfaceContext.h" |
| #include "src/gpu/GrTextureProxy.h" |
| #include "src/gpu/geometry/GrShape.h" |
| |
| /* |
| * Convert a boolean operation into a transfer mode code |
| */ |
| static SkBlendMode op_to_mode(SkRegion::Op op) { |
| |
| static const SkBlendMode modeMap[] = { |
| SkBlendMode::kDstOut, // kDifference_Op |
| SkBlendMode::kModulate, // kIntersect_Op |
| SkBlendMode::kSrcOver, // kUnion_Op |
| SkBlendMode::kXor, // kXOR_Op |
| SkBlendMode::kClear, // kReverseDifference_Op |
| SkBlendMode::kSrc, // kReplace_Op |
| }; |
| |
| return modeMap[op]; |
| } |
| |
| /** |
| * Draw a single rect element of the clip stack into the accumulation bitmap |
| */ |
| void GrSWMaskHelper::drawRect(const SkRect& rect, const SkMatrix& matrix, SkRegion::Op op, GrAA aa, |
| uint8_t alpha) { |
| SkPaint paint; |
| paint.setBlendMode(op_to_mode(op)); |
| paint.setAntiAlias(GrAA::kYes == aa); |
| paint.setColor(SkColorSetARGB(alpha, alpha, alpha, alpha)); |
| |
| SkMatrix translatedMatrix = matrix; |
| translatedMatrix.postTranslate(fTranslate.fX, fTranslate.fY); |
| fDraw.fMatrix = &translatedMatrix; |
| |
| fDraw.drawRect(rect, paint); |
| } |
| |
| /** |
| * Draw a single path element of the clip stack into the accumulation bitmap |
| */ |
| void GrSWMaskHelper::drawShape(const GrShape& shape, const SkMatrix& matrix, SkRegion::Op op, |
| GrAA aa, uint8_t alpha) { |
| SkPaint paint; |
| paint.setPathEffect(shape.style().refPathEffect()); |
| shape.style().strokeRec().applyToPaint(&paint); |
| paint.setAntiAlias(GrAA::kYes == aa); |
| |
| SkMatrix translatedMatrix = matrix; |
| translatedMatrix.postTranslate(fTranslate.fX, fTranslate.fY); |
| fDraw.fMatrix = &translatedMatrix; |
| |
| SkPath path; |
| shape.asPath(&path); |
| if (SkRegion::kReplace_Op == op && 0xFF == alpha) { |
| SkASSERT(0xFF == paint.getAlpha()); |
| fDraw.drawPathCoverage(path, paint); |
| } else { |
| paint.setBlendMode(op_to_mode(op)); |
| paint.setColor(SkColorSetARGB(alpha, alpha, alpha, alpha)); |
| fDraw.drawPath(path, paint); |
| } |
| }; |
| |
| bool GrSWMaskHelper::init(const SkIRect& resultBounds) { |
| // We will need to translate draws so the bound's UL corner is at the origin |
| fTranslate = {-SkIntToScalar(resultBounds.fLeft), -SkIntToScalar(resultBounds.fTop)}; |
| SkIRect bounds = SkIRect::MakeWH(resultBounds.width(), resultBounds.height()); |
| |
| const SkImageInfo bmImageInfo = SkImageInfo::MakeA8(bounds.width(), bounds.height()); |
| if (!fPixels->tryAlloc(bmImageInfo)) { |
| return false; |
| } |
| fPixels->erase(0); |
| |
| fDraw.fDst = *fPixels; |
| fRasterClip.setRect(bounds); |
| fDraw.fRC = &fRasterClip; |
| return true; |
| } |
| |
| GrSurfaceProxyView GrSWMaskHelper::toTextureView(GrRecordingContext* context, SkBackingFit fit) { |
| SkImageInfo ii = SkImageInfo::MakeA8(fPixels->width(), fPixels->height()); |
| size_t rowBytes = fPixels->rowBytes(); |
| |
| SkBitmap bitmap; |
| SkAssertResult(bitmap.installPixels(ii, fPixels->detachPixels(), rowBytes, |
| [](void* addr, void* context) { sk_free(addr); }, |
| nullptr)); |
| bitmap.setImmutable(); |
| |
| GrBitmapTextureMaker maker(context, bitmap, GrBitmapTextureMaker::Cached::kNo, fit); |
| return maker.view(GrMipMapped::kNo); |
| } |