| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| |
| |
| #include "GrContext.h" |
| #include "GrTextContext.h" |
| |
| #include "SkGpuDevice.h" |
| #include "SkGrTexturePixelRef.h" |
| |
| #include "SkColorFilter.h" |
| #include "SkDrawProcs.h" |
| #include "SkGlyphCache.h" |
| #include "SkUtils.h" |
| |
| #define CACHE_LAYER_TEXTURES 1 |
| |
| #if 0 |
| extern bool (*gShouldDrawProc)(); |
| #define CHECK_SHOULD_DRAW(draw) \ |
| do { \ |
| if (gShouldDrawProc && !gShouldDrawProc()) return; \ |
| this->prepareRenderTarget(draw); \ |
| } while (0) |
| #else |
| #define CHECK_SHOULD_DRAW(draw) this->prepareRenderTarget(draw) |
| #endif |
| |
| // we use the same texture slot on GrPaint for bitmaps and shaders |
| // (since drawBitmap, drawSprite, and drawDevice ignore skia's shader) |
| enum { |
| kBitmapTextureIdx = 0, |
| kShaderTextureIdx = 0 |
| }; |
| |
| |
| #define MAX_BLUR_SIGMA 4.0f |
| // FIXME: This value comes from from SkBlurMaskFilter.cpp. |
| // Should probably be put in a common header someplace. |
| #define MAX_BLUR_RADIUS SkIntToScalar(128) |
| // This constant approximates the scaling done in the software path's |
| // "high quality" mode, in SkBlurMask::Blur() (1 / sqrt(3)). |
| // IMHO, it actually should be 1: we blur "less" than we should do |
| // according to the CSS and canvas specs, simply because Safari does the same. |
| // Firefox used to do the same too, until 4.0 where they fixed it. So at some |
| // point we should probably get rid of these scaling constants and rebaseline |
| // all the blur tests. |
| #define BLUR_SIGMA_SCALE 0.6f |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkGpuDevice::SkAutoCachedTexture:: |
| SkAutoCachedTexture(SkGpuDevice* device, |
| const SkBitmap& bitmap, |
| const GrSamplerState& sampler, |
| GrTexture** texture) { |
| GrAssert(texture); |
| *texture = this->set(device, bitmap, sampler); |
| } |
| |
| SkGpuDevice::SkAutoCachedTexture::SkAutoCachedTexture() { |
| } |
| |
| GrTexture* SkGpuDevice::SkAutoCachedTexture::set(SkGpuDevice* device, |
| const SkBitmap& bitmap, |
| const GrSamplerState& sampler) { |
| if (fTex.texture()) { |
| fDevice->unlockCachedTexture(fTex); |
| } |
| fDevice = device; |
| GrTexture* texture = (GrTexture*)bitmap.getTexture(); |
| if (texture) { |
| // return the native texture |
| fTex.reset(); |
| } else { |
| // look it up in our cache |
| fTex = device->lockCachedTexture(bitmap, sampler); |
| texture = fTex.texture(); |
| } |
| return texture; |
| } |
| |
| SkGpuDevice::SkAutoCachedTexture::~SkAutoCachedTexture() { |
| if (fTex.texture()) { |
| fDevice->unlockCachedTexture(fTex); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool gDoTraceDraw; |
| |
| struct GrSkDrawProcs : public SkDrawProcs { |
| public: |
| GrContext* fContext; |
| GrTextContext* fTextContext; |
| GrFontScaler* fFontScaler; // cached in the skia glyphcache |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static SkBitmap::Config grConfig2skConfig(GrPixelConfig config, bool* isOpaque) { |
| switch (config) { |
| case kAlpha_8_GrPixelConfig: |
| *isOpaque = false; |
| return SkBitmap::kA8_Config; |
| case kRGB_565_GrPixelConfig: |
| *isOpaque = true; |
| return SkBitmap::kRGB_565_Config; |
| case kRGBA_4444_GrPixelConfig: |
| *isOpaque = false; |
| return SkBitmap::kARGB_4444_Config; |
| case kRGBA_8888_GrPixelConfig: |
| case kRGBX_8888_GrPixelConfig: |
| *isOpaque = (kRGBX_8888_GrPixelConfig == config); |
| return SkBitmap::kARGB_8888_Config; |
| default: |
| *isOpaque = false; |
| return SkBitmap::kNo_Config; |
| } |
| } |
| |
| static SkBitmap make_bitmap(GrContext* context, GrRenderTarget* renderTarget) { |
| GrPixelConfig config = renderTarget->config(); |
| |
| bool isOpaque; |
| SkBitmap bitmap; |
| bitmap.setConfig(grConfig2skConfig(config, &isOpaque), |
| renderTarget->width(), renderTarget->height()); |
| bitmap.setIsOpaque(isOpaque); |
| return bitmap; |
| } |
| |
| SkGpuDevice::SkGpuDevice(GrContext* context, GrTexture* texture) |
| : SkDevice(make_bitmap(context, texture->asRenderTarget())) { |
| this->initFromRenderTarget(context, texture->asRenderTarget()); |
| } |
| |
| SkGpuDevice::SkGpuDevice(GrContext* context, GrRenderTarget* renderTarget) |
| : SkDevice(make_bitmap(context, renderTarget)) { |
| this->initFromRenderTarget(context, renderTarget); |
| } |
| |
| void SkGpuDevice::initFromRenderTarget(GrContext* context, |
| GrRenderTarget* renderTarget) { |
| fNeedPrepareRenderTarget = false; |
| fDrawProcs = NULL; |
| |
| fContext = context; |
| fContext->ref(); |
| |
| fTexture = NULL; |
| fRenderTarget = NULL; |
| fNeedClear = false; |
| |
| GrAssert(NULL != renderTarget); |
| fRenderTarget = renderTarget; |
| fRenderTarget->ref(); |
| // if this RT is also a texture, hold a ref on it |
| fTexture = fRenderTarget->asTexture(); |
| SkSafeRef(fTexture); |
| |
| SkGrRenderTargetPixelRef* pr = new SkGrRenderTargetPixelRef(fRenderTarget); |
| this->setPixelRef(pr, 0)->unref(); |
| } |
| |
| SkGpuDevice::SkGpuDevice(GrContext* context, SkBitmap::Config config, int width, |
| int height, Usage usage) |
| : SkDevice(config, width, height, false /*isOpaque*/) { |
| fNeedPrepareRenderTarget = false; |
| fDrawProcs = NULL; |
| |
| fContext = context; |
| fContext->ref(); |
| |
| fTexture = NULL; |
| fRenderTarget = NULL; |
| fNeedClear = false; |
| |
| if (config != SkBitmap::kRGB_565_Config) { |
| config = SkBitmap::kARGB_8888_Config; |
| } |
| SkBitmap bm; |
| bm.setConfig(config, width, height); |
| |
| #if CACHE_LAYER_TEXTURES |
| TexType type = (kSaveLayer_Usage == usage) ? |
| kSaveLayerDeviceRenderTarget_TexType : |
| kDeviceRenderTarget_TexType; |
| fCache = this->lockCachedTexture(bm, GrSamplerState::ClampNoFilter(), type); |
| fTexture = fCache.texture(); |
| if (fTexture) { |
| SkASSERT(NULL != fTexture->asRenderTarget()); |
| // hold a ref directly on fTexture (even though fCache has one) to match |
| // other constructor paths. Simplifies cleanup. |
| fTexture->ref(); |
| } |
| #else |
| const GrTextureDesc desc = { |
| kRenderTarget_GrTextureFlagBit, |
| kNone_GrAALevel, |
| width, |
| height, |
| SkGr::Bitmap2PixelConfig(bm) |
| }; |
| |
| fTexture = fContext->createUncachedTexture(desc, NULL, 0); |
| #endif |
| if (NULL != fTexture) { |
| fRenderTarget = fTexture->asRenderTarget(); |
| fRenderTarget->ref(); |
| |
| GrAssert(NULL != fRenderTarget); |
| |
| // we defer the actual clear until our gainFocus() |
| fNeedClear = true; |
| |
| // wrap the bitmap with a pixelref to expose our texture |
| SkGrTexturePixelRef* pr = new SkGrTexturePixelRef(fTexture); |
| this->setPixelRef(pr, 0)->unref(); |
| } else { |
| GrPrintf("--- failed to create gpu-offscreen [%d %d]\n", |
| width, height); |
| GrAssert(false); |
| } |
| } |
| |
| SkGpuDevice::~SkGpuDevice() { |
| if (fDrawProcs) { |
| delete fDrawProcs; |
| } |
| |
| SkSafeUnref(fTexture); |
| SkSafeUnref(fRenderTarget); |
| if (fCache.texture()) { |
| GrAssert(NULL != fTexture); |
| GrAssert(fRenderTarget == fTexture->asRenderTarget()); |
| fContext->unlockTexture(fCache); |
| } |
| fContext->unref(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkGpuDevice::makeRenderTargetCurrent() { |
| fContext->setRenderTarget(fRenderTarget); |
| fContext->flush(true); |
| fNeedPrepareRenderTarget = true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkGpuDevice::readPixels(const SkIRect& srcRect, SkBitmap* bitmap) { |
| SkIRect bounds; |
| bounds.set(0, 0, this->width(), this->height()); |
| if (!bounds.intersect(srcRect)) { |
| return false; |
| } |
| |
| const int w = bounds.width(); |
| const int h = bounds.height(); |
| SkBitmap tmp; |
| // note we explicitly specify our rowBytes to be snug (no gap between rows) |
| tmp.setConfig(SkBitmap::kARGB_8888_Config, w, h, w * 4); |
| if (!tmp.allocPixels()) { |
| return false; |
| } |
| |
| tmp.lockPixels(); |
| |
| bool read = fContext->readRenderTargetPixels(fRenderTarget, |
| bounds.fLeft, bounds.fTop, |
| bounds.width(), bounds.height(), |
| kRGBA_8888_GrPixelConfig, |
| tmp.getPixels()); |
| tmp.unlockPixels(); |
| if (!read) { |
| return false; |
| } |
| |
| tmp.swap(*bitmap); |
| return true; |
| } |
| |
| void SkGpuDevice::writePixels(const SkBitmap& bitmap, int x, int y) { |
| SkAutoLockPixels alp(bitmap); |
| if (!bitmap.readyToDraw()) { |
| return; |
| } |
| GrPixelConfig config = SkGr::BitmapConfig2PixelConfig(bitmap.config(), |
| bitmap.isOpaque()); |
| fContext->setRenderTarget(fRenderTarget); |
| // we aren't setting the clip or matrix, so mark as dirty |
| // we don't need to set them for this call and don't have them anyway |
| fNeedPrepareRenderTarget = true; |
| |
| fContext->writePixels(x, y, bitmap.width(), bitmap.height(), |
| config, bitmap.getPixels(), bitmap.rowBytes()); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void convert_matrixclip(GrContext* context, const SkMatrix& matrix, |
| const SkClipStack& clipStack, |
| const SkRegion& clipRegion, |
| const SkIPoint& origin) { |
| context->setMatrix(matrix); |
| |
| SkGrClipIterator iter; |
| iter.reset(clipStack); |
| const SkIRect& skBounds = clipRegion.getBounds(); |
| GrRect bounds; |
| bounds.setLTRB(GrIntToScalar(skBounds.fLeft), |
| GrIntToScalar(skBounds.fTop), |
| GrIntToScalar(skBounds.fRight), |
| GrIntToScalar(skBounds.fBottom)); |
| GrClip grc(&iter, GrIntToScalar(-origin.x()), GrIntToScalar(-origin.y()), |
| &bounds); |
| context->setClip(grc); |
| } |
| |
| // call this ever each draw call, to ensure that the context reflects our state, |
| // and not the state from some other canvas/device |
| void SkGpuDevice::prepareRenderTarget(const SkDraw& draw) { |
| if (fNeedPrepareRenderTarget || |
| fContext->getRenderTarget() != fRenderTarget) { |
| |
| fContext->setRenderTarget(fRenderTarget); |
| SkASSERT(draw.fClipStack); |
| convert_matrixclip(fContext, *draw.fMatrix, |
| *draw.fClipStack, *draw.fClip, this->getOrigin()); |
| fNeedPrepareRenderTarget = false; |
| } |
| } |
| |
| void SkGpuDevice::setMatrixClip(const SkMatrix& matrix, const SkRegion& clip, |
| const SkClipStack& clipStack) { |
| this->INHERITED::setMatrixClip(matrix, clip, clipStack); |
| // We don't need to set them now because the context may not reflect this device. |
| fNeedPrepareRenderTarget = true; |
| } |
| |
| void SkGpuDevice::gainFocus(SkCanvas* canvas, const SkMatrix& matrix, |
| const SkRegion& clip, const SkClipStack& clipStack) { |
| |
| fContext->setRenderTarget(fRenderTarget); |
| |
| this->INHERITED::gainFocus(canvas, matrix, clip, clipStack); |
| |
| convert_matrixclip(fContext, matrix, clipStack, clip, this->getOrigin()); |
| |
| if (fNeedClear) { |
| fContext->clear(NULL, 0x0); |
| fNeedClear = false; |
| } |
| } |
| |
| bool SkGpuDevice::bindDeviceAsTexture(GrPaint* paint) { |
| if (NULL != fTexture) { |
| paint->setTexture(kBitmapTextureIdx, fTexture); |
| return true; |
| } |
| return false; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SK_COMPILE_ASSERT(SkShader::kNone_BitmapType == 0, shader_type_mismatch); |
| SK_COMPILE_ASSERT(SkShader::kDefault_BitmapType == 1, shader_type_mismatch); |
| SK_COMPILE_ASSERT(SkShader::kRadial_BitmapType == 2, shader_type_mismatch); |
| SK_COMPILE_ASSERT(SkShader::kSweep_BitmapType == 3, shader_type_mismatch); |
| SK_COMPILE_ASSERT(SkShader::kTwoPointRadial_BitmapType == 4, |
| shader_type_mismatch); |
| SK_COMPILE_ASSERT(SkShader::kLast_BitmapType == 4, shader_type_mismatch); |
| |
| static const GrSamplerState::SampleMode sk_bmp_type_to_sample_mode[] = { |
| (GrSamplerState::SampleMode) -1, // kNone_BitmapType |
| GrSamplerState::kNormal_SampleMode, // kDefault_BitmapType |
| GrSamplerState::kRadial_SampleMode, // kRadial_BitmapType |
| GrSamplerState::kSweep_SampleMode, // kSweep_BitmapType |
| GrSamplerState::kRadial2_SampleMode, // kTwoPointRadial_BitmapType |
| }; |
| |
| bool SkGpuDevice::skPaint2GrPaintNoShader(const SkPaint& skPaint, |
| bool justAlpha, |
| GrPaint* grPaint, |
| bool constantColor) { |
| |
| grPaint->fDither = skPaint.isDither(); |
| grPaint->fAntiAlias = skPaint.isAntiAlias(); |
| |
| SkXfermode::Coeff sm = SkXfermode::kOne_Coeff; |
| SkXfermode::Coeff dm = SkXfermode::kISA_Coeff; |
| |
| SkXfermode* mode = skPaint.getXfermode(); |
| if (mode) { |
| if (!mode->asCoeff(&sm, &dm)) { |
| SkDEBUGCODE(SkDebugf("Unsupported xfer mode.\n");) |
| #if 0 |
| return false; |
| #endif |
| } |
| } |
| grPaint->fSrcBlendCoeff = sk_blend_to_grblend(sm); |
| grPaint->fDstBlendCoeff = sk_blend_to_grblend(dm); |
| |
| if (justAlpha) { |
| uint8_t alpha = skPaint.getAlpha(); |
| grPaint->fColor = GrColorPackRGBA(alpha, alpha, alpha, alpha); |
| // justAlpha is currently set to true only if there is a texture, |
| // so constantColor should not also be true. |
| GrAssert(!constantColor); |
| } else { |
| grPaint->fColor = SkGr::SkColor2GrColor(skPaint.getColor()); |
| grPaint->setTexture(kShaderTextureIdx, NULL); |
| } |
| SkColorFilter* colorFilter = skPaint.getColorFilter(); |
| SkColor color; |
| SkXfermode::Mode filterMode; |
| if (colorFilter != NULL && colorFilter->asColorMode(&color, &filterMode)) { |
| if (!constantColor) { |
| grPaint->fColorFilterColor = SkGr::SkColor2GrColor(color); |
| grPaint->fColorFilterXfermode = filterMode; |
| return true; |
| } |
| SkColor filtered = colorFilter->filterColor(skPaint.getColor()); |
| grPaint->fColor = SkGr::SkColor2GrColor(filtered); |
| } |
| grPaint->resetColorFilter(); |
| return true; |
| } |
| |
| bool SkGpuDevice::skPaint2GrPaintShader(const SkPaint& skPaint, |
| SkAutoCachedTexture* act, |
| const SkMatrix& ctm, |
| GrPaint* grPaint, |
| bool constantColor) { |
| |
| SkASSERT(NULL != act); |
| |
| SkShader* shader = skPaint.getShader(); |
| if (NULL == shader) { |
| return this->skPaint2GrPaintNoShader(skPaint, |
| false, |
| grPaint, |
| constantColor); |
| } else if (!this->skPaint2GrPaintNoShader(skPaint, true, grPaint, false)) { |
| return false; |
| } |
| |
| SkBitmap bitmap; |
| SkMatrix matrix; |
| SkShader::TileMode tileModes[2]; |
| SkScalar twoPointParams[3]; |
| SkShader::BitmapType bmptype = shader->asABitmap(&bitmap, &matrix, |
| tileModes, twoPointParams); |
| |
| GrSamplerState::SampleMode sampleMode = sk_bmp_type_to_sample_mode[bmptype]; |
| if (-1 == sampleMode) { |
| SkShader::GradientInfo info; |
| SkColor color; |
| |
| info.fColors = &color; |
| info.fColorOffsets = NULL; |
| info.fColorCount = 1; |
| if (SkShader::kColor_GradientType == shader->asAGradient(&info)) { |
| SkPaint copy(skPaint); |
| copy.setShader(NULL); |
| // modulate the paint alpha by the shader's solid color alpha |
| U8CPU newA = SkMulDiv255Round(SkColorGetA(color), copy.getAlpha()); |
| copy.setColor(SkColorSetA(color, newA)); |
| return this->skPaint2GrPaintNoShader(copy, |
| false, |
| grPaint, |
| constantColor); |
| } |
| return false; |
| } |
| GrSamplerState* sampler = grPaint->getTextureSampler(kShaderTextureIdx); |
| sampler->setSampleMode(sampleMode); |
| if (skPaint.isFilterBitmap()) { |
| sampler->setFilter(GrSamplerState::kBilinear_Filter); |
| } else { |
| sampler->setFilter(GrSamplerState::kNearest_Filter); |
| } |
| sampler->setWrapX(sk_tile_mode_to_grwrap(tileModes[0])); |
| sampler->setWrapY(sk_tile_mode_to_grwrap(tileModes[1])); |
| if (GrSamplerState::kRadial2_SampleMode == sampleMode) { |
| sampler->setRadial2Params(twoPointParams[0], |
| twoPointParams[1], |
| twoPointParams[2] < 0); |
| } |
| |
| GrTexture* texture = act->set(this, bitmap, *sampler); |
| if (NULL == texture) { |
| SkDebugf("Couldn't convert bitmap to texture.\n"); |
| return false; |
| } |
| grPaint->setTexture(kShaderTextureIdx, texture); |
| |
| // since our texture coords will be in local space, we wack the texture |
| // matrix to map them back into 0...1 before we load it |
| SkMatrix localM; |
| if (shader->getLocalMatrix(&localM)) { |
| SkMatrix inverse; |
| if (localM.invert(&inverse)) { |
| matrix.preConcat(inverse); |
| } |
| } |
| if (SkShader::kDefault_BitmapType == bmptype) { |
| GrScalar sx = GrFixedToScalar(GR_Fixed1 / bitmap.width()); |
| GrScalar sy = GrFixedToScalar(GR_Fixed1 / bitmap.height()); |
| matrix.postScale(sx, sy); |
| } else if (SkShader::kRadial_BitmapType == bmptype) { |
| GrScalar s = GrFixedToScalar(GR_Fixed1 / bitmap.width()); |
| matrix.postScale(s, s); |
| } |
| sampler->setMatrix(matrix); |
| |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkGpuDevice::clear(SkColor color) { |
| fContext->clear(NULL, color); |
| } |
| |
| void SkGpuDevice::drawPaint(const SkDraw& draw, const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| if (!this->skPaint2GrPaintShader(paint, |
| &act, |
| *draw.fMatrix, |
| &grPaint, |
| true)) { |
| return; |
| } |
| |
| fContext->drawPaint(grPaint); |
| } |
| |
| // must be in SkCanvas::PointMode order |
| static const GrPrimitiveType gPointMode2PrimtiveType[] = { |
| kPoints_PrimitiveType, |
| kLines_PrimitiveType, |
| kLineStrip_PrimitiveType |
| }; |
| |
| void SkGpuDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode, |
| size_t count, const SkPoint pts[], const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| SkScalar width = paint.getStrokeWidth(); |
| if (width < 0) { |
| return; |
| } |
| |
| // we only handle hairlines here, else we let the SkDraw call our drawPath() |
| if (width > 0) { |
| draw.drawPoints(mode, count, pts, paint, true); |
| return; |
| } |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| if (!this->skPaint2GrPaintShader(paint, |
| &act, |
| *draw.fMatrix, |
| &grPaint, |
| true)) { |
| return; |
| } |
| |
| fContext->drawVertices(grPaint, |
| gPointMode2PrimtiveType[mode], |
| count, |
| (GrPoint*)pts, |
| NULL, |
| NULL, |
| NULL, |
| 0); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void SkGpuDevice::drawRect(const SkDraw& draw, const SkRect& rect, |
| const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| bool doStroke = paint.getStyle() != SkPaint::kFill_Style; |
| SkScalar width = paint.getStrokeWidth(); |
| |
| /* |
| We have special code for hairline strokes, miter-strokes, and fills. |
| Anything else we just call our path code. |
| */ |
| bool usePath = doStroke && width > 0 && |
| paint.getStrokeJoin() != SkPaint::kMiter_Join; |
| // another reason we might need to call drawPath... |
| if (paint.getMaskFilter()) { |
| usePath = true; |
| } |
| // until we aa rotated rects... |
| if (!usePath && paint.isAntiAlias() && !draw.fMatrix->rectStaysRect()) { |
| usePath = true; |
| } |
| // small miter limit means right angles show bevel... |
| if (SkPaint::kMiter_Join == paint.getStrokeJoin() && |
| paint.getStrokeMiter() < SK_ScalarSqrt2) |
| { |
| usePath = true; |
| } |
| // until we can both stroke and fill rectangles |
| if (paint.getStyle() == SkPaint::kStrokeAndFill_Style) { |
| usePath = true; |
| } |
| |
| if (usePath) { |
| SkPath path; |
| path.addRect(rect); |
| this->drawPath(draw, path, paint, NULL, true); |
| return; |
| } |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| if (!this->skPaint2GrPaintShader(paint, |
| &act, |
| *draw.fMatrix, |
| &grPaint, |
| true)) { |
| return; |
| } |
| fContext->drawRect(grPaint, rect, doStroke ? width : -1); |
| } |
| |
| #include "SkMaskFilter.h" |
| #include "SkBounder.h" |
| |
| static GrPathFill skToGrFillType(SkPath::FillType fillType) { |
| switch (fillType) { |
| case SkPath::kWinding_FillType: |
| return kWinding_PathFill; |
| case SkPath::kEvenOdd_FillType: |
| return kEvenOdd_PathFill; |
| case SkPath::kInverseWinding_FillType: |
| return kInverseWinding_PathFill; |
| case SkPath::kInverseEvenOdd_FillType: |
| return kInverseEvenOdd_PathFill; |
| default: |
| SkDebugf("Unsupported path fill type\n"); |
| return kHairLine_PathFill; |
| } |
| } |
| |
| static void buildKernel(float sigma, float* kernel, int kernelWidth) { |
| int halfWidth = (kernelWidth - 1) / 2; |
| float sum = 0.0f; |
| float denom = 1.0f / (2.0f * sigma * sigma); |
| for (int i = 0; i < kernelWidth; ++i) { |
| float x = static_cast<float>(i - halfWidth); |
| // Note that the constant term (1/(sqrt(2*pi*sigma^2)) of the Gaussian |
| // is dropped here, since we renormalize the kernel below. |
| kernel[i] = sk_float_exp(- x * x * denom); |
| sum += kernel[i]; |
| } |
| // Normalize the kernel |
| float scale = 1.0f / sum; |
| for (int i = 0; i < kernelWidth; ++i) |
| kernel[i] *= scale; |
| } |
| |
| static void scaleRect(SkRect* rect, float scale) { |
| rect->fLeft *= scale; |
| rect->fTop *= scale; |
| rect->fRight *= scale; |
| rect->fBottom *= scale; |
| } |
| |
| static bool drawWithGPUMaskFilter(GrContext* context, const SkPath& path, |
| SkMaskFilter* filter, const SkMatrix& matrix, |
| const SkRegion& clip, SkBounder* bounder, |
| GrPaint* grp) { |
| #ifdef SK_DISABLE_GPU_BLUR |
| return false; |
| #endif |
| SkMaskFilter::BlurInfo info; |
| SkMaskFilter::BlurType blurType = filter->asABlur(&info); |
| if (SkMaskFilter::kNone_BlurType == blurType) { |
| return false; |
| } |
| SkScalar radius = info.fIgnoreTransform ? info.fRadius |
| : matrix.mapRadius(info.fRadius); |
| radius = SkMinScalar(radius, MAX_BLUR_RADIUS); |
| if (radius <= 0) { |
| return false; |
| } |
| float sigma = SkScalarToFloat(radius) * BLUR_SIGMA_SCALE; |
| SkRect srcRect = path.getBounds(); |
| |
| int scaleFactor = 1; |
| |
| while (sigma > MAX_BLUR_SIGMA) { |
| scaleFactor *= 2; |
| sigma *= 0.5f; |
| } |
| int halfWidth = static_cast<int>(ceilf(sigma * 3.0f)); |
| int kernelWidth = halfWidth * 2 + 1; |
| |
| float invScale = 1.0f / scaleFactor; |
| scaleRect(&srcRect, invScale); |
| srcRect.roundOut(); |
| srcRect.inset(-halfWidth, -halfWidth); |
| |
| SkRect clipBounds; |
| clipBounds.set(clip.getBounds()); |
| scaleRect(&clipBounds, invScale); |
| clipBounds.roundOut(); |
| clipBounds.inset(-halfWidth, -halfWidth); |
| |
| srcRect.intersect(clipBounds); |
| |
| scaleRect(&srcRect, scaleFactor); |
| SkRect finalRect = srcRect; |
| |
| SkIRect finalIRect; |
| finalRect.roundOut(&finalIRect); |
| if (clip.quickReject(finalIRect)) { |
| return true; |
| } |
| if (bounder && !bounder->doIRect(finalIRect)) { |
| return true; |
| } |
| GrPoint offset = GrPoint::Make(-srcRect.fLeft, -srcRect.fTop); |
| srcRect.offset(-srcRect.fLeft, -srcRect.fTop); |
| const GrTextureDesc desc = { |
| kRenderTarget_GrTextureFlagBit, |
| kNone_GrAALevel, |
| srcRect.width(), |
| srcRect.height(), |
| // We actually only need A8, but it often isn't supported as a |
| // render target |
| kRGBA_8888_GrPixelConfig |
| }; |
| |
| GrAutoScratchTexture srcEntry(context, desc); |
| GrAutoScratchTexture dstEntry(context, desc); |
| if (NULL == srcEntry.texture() || NULL == dstEntry.texture()) { |
| return false; |
| } |
| GrTexture* srcTexture = srcEntry.texture(); |
| GrTexture* dstTexture = dstEntry.texture(); |
| if (NULL == srcTexture || NULL == dstTexture) { |
| return false; |
| } |
| GrRenderTarget* oldRenderTarget = context->getRenderTarget(); |
| // Once this code moves into GrContext, this should be changed to use |
| // an AutoClipRestore. |
| GrClip oldClip = context->getClip(); |
| context->setRenderTarget(dstTexture->asRenderTarget()); |
| context->setClip(srcRect); |
| context->clear(NULL, 0); |
| GrPaint tempPaint; |
| tempPaint.reset(); |
| |
| GrAutoMatrix avm(context, GrMatrix::I()); |
| tempPaint.fAntiAlias = grp->fAntiAlias; |
| if (tempPaint.fAntiAlias) { |
| // AA uses the "coverage" stages on GrDrawTarget. Coverage with a dst |
| // blend coeff of zero requires dual source blending support in order |
| // to properly blend partially covered pixels. This means the AA |
| // code path may not be taken. So we use a dst blend coeff of ISA. We |
| // could special case AA draws to a dst surface with known alpha=0 to |
| // use a zero dst coeff when dual source blending isn't available. |
| tempPaint.fSrcBlendCoeff = kOne_BlendCoeff; |
| tempPaint.fDstBlendCoeff = kISC_BlendCoeff; |
| } |
| // Draw hard shadow to dstTexture with path topleft at origin 0,0. |
| context->drawPath(tempPaint, path, skToGrFillType(path.getFillType()), &offset); |
| SkTSwap(srcTexture, dstTexture); |
| |
| GrMatrix sampleM; |
| sampleM.setIDiv(srcTexture->width(), srcTexture->height()); |
| GrPaint paint; |
| paint.reset(); |
| paint.getTextureSampler(0)->setFilter(GrSamplerState::kBilinear_Filter); |
| paint.getTextureSampler(0)->setMatrix(sampleM); |
| GrAutoScratchTexture origEntry; |
| |
| if (blurType != SkMaskFilter::kNormal_BlurType) { |
| // Stash away a copy of the unblurred image. |
| origEntry.set(context, desc); |
| if (NULL == origEntry.texture()) { |
| return false; |
| } |
| context->setRenderTarget(origEntry.texture()->asRenderTarget()); |
| paint.setTexture(0, srcTexture); |
| context->drawRect(paint, srcRect); |
| } |
| for (int i = 1; i < scaleFactor; i *= 2) { |
| sampleM.setIDiv(srcTexture->width(), srcTexture->height()); |
| paint.getTextureSampler(0)->setMatrix(sampleM); |
| context->setRenderTarget(dstTexture->asRenderTarget()); |
| SkRect dstRect(srcRect); |
| scaleRect(&dstRect, 0.5f); |
| paint.setTexture(0, srcTexture); |
| context->drawRectToRect(paint, dstRect, srcRect); |
| srcRect = dstRect; |
| SkTSwap(srcTexture, dstTexture); |
| } |
| |
| SkAutoTMalloc<float> kernelStorage(kernelWidth); |
| float* kernel = kernelStorage.get(); |
| buildKernel(sigma, kernel, kernelWidth); |
| |
| // Clear out a halfWidth to the right of the srcRect to prevent the |
| // X convolution from reading garbage. |
| SkIRect clearRect = SkIRect::MakeXYWH( |
| srcRect.fRight, srcRect.fTop, halfWidth, srcRect.height()); |
| context->clear(&clearRect, 0x0); |
| |
| context->setRenderTarget(dstTexture->asRenderTarget()); |
| context->convolveInX(srcTexture, srcRect, kernel, kernelWidth); |
| SkTSwap(srcTexture, dstTexture); |
| |
| // Clear out a halfWidth below the srcRect to prevent the Y |
| // convolution from reading garbage. |
| clearRect = SkIRect::MakeXYWH( |
| srcRect.fLeft, srcRect.fBottom, srcRect.width(), halfWidth); |
| context->clear(&clearRect, 0x0); |
| |
| context->setRenderTarget(dstTexture->asRenderTarget()); |
| context->convolveInY(srcTexture, srcRect, kernel, kernelWidth); |
| SkTSwap(srcTexture, dstTexture); |
| |
| // Clear one pixel to the right and below, to accommodate bilinear |
| // upsampling. |
| clearRect = SkIRect::MakeXYWH( |
| srcRect.fLeft, srcRect.fBottom, srcRect.width() + 1, 1); |
| context->clear(&clearRect, 0x0); |
| clearRect = SkIRect::MakeXYWH( |
| srcRect.fRight, srcRect.fTop, 1, srcRect.height()); |
| context->clear(&clearRect, 0x0); |
| |
| if (scaleFactor > 1) { |
| // FIXME: This should be mitchell, not bilinear. |
| paint.getTextureSampler(0)->setFilter(GrSamplerState::kBilinear_Filter); |
| sampleM.setIDiv(srcTexture->width(), srcTexture->height()); |
| paint.getTextureSampler(0)->setMatrix(sampleM); |
| context->setRenderTarget(dstTexture->asRenderTarget()); |
| paint.setTexture(0, srcTexture); |
| SkRect dstRect(srcRect); |
| scaleRect(&dstRect, scaleFactor); |
| context->drawRectToRect(paint, dstRect, srcRect); |
| srcRect = dstRect; |
| SkTSwap(srcTexture, dstTexture); |
| } |
| |
| if (blurType != SkMaskFilter::kNormal_BlurType) { |
| GrTexture* origTexture = origEntry.texture(); |
| paint.getTextureSampler(0)->setFilter(GrSamplerState::kNearest_Filter); |
| sampleM.setIDiv(origTexture->width(), origTexture->height()); |
| paint.getTextureSampler(0)->setMatrix(sampleM); |
| // Blend origTexture over srcTexture. |
| context->setRenderTarget(srcTexture->asRenderTarget()); |
| paint.setTexture(0, origTexture); |
| if (SkMaskFilter::kInner_BlurType == blurType) { |
| // inner: dst = dst * src |
| paint.fSrcBlendCoeff = kDC_BlendCoeff; |
| paint.fDstBlendCoeff = kZero_BlendCoeff; |
| } else if (SkMaskFilter::kSolid_BlurType == blurType) { |
| // solid: dst = src + dst - src * dst |
| // = (1 - dst) * src + 1 * dst |
| paint.fSrcBlendCoeff = kIDC_BlendCoeff; |
| paint.fDstBlendCoeff = kOne_BlendCoeff; |
| } else if (SkMaskFilter::kOuter_BlurType == blurType) { |
| // outer: dst = dst * (1 - src) |
| // = 0 * src + (1 - src) * dst |
| paint.fSrcBlendCoeff = kZero_BlendCoeff; |
| paint.fDstBlendCoeff = kISC_BlendCoeff; |
| } |
| context->drawRect(paint, srcRect); |
| } |
| context->setRenderTarget(oldRenderTarget); |
| context->setClip(oldClip); |
| |
| if (grp->hasTextureOrMask()) { |
| GrMatrix inverse; |
| if (!matrix.invert(&inverse)) { |
| return false; |
| } |
| grp->preConcatActiveSamplerMatrices(inverse); |
| } |
| |
| static const int MASK_IDX = GrPaint::kMaxMasks - 1; |
| // we assume the last mask index is available for use |
| GrAssert(NULL == grp->getMask(MASK_IDX)); |
| grp->setMask(MASK_IDX, srcTexture); |
| grp->getMaskSampler(MASK_IDX)->setClampNoFilter(); |
| |
| GrMatrix m; |
| m.setTranslate(-finalRect.fLeft, -finalRect.fTop); |
| m.postIDiv(srcTexture->width(), srcTexture->height()); |
| grp->getMaskSampler(MASK_IDX)->setMatrix(m); |
| context->drawRect(*grp, finalRect); |
| return true; |
| } |
| |
| static bool drawWithMaskFilter(GrContext* context, const SkPath& path, |
| SkMaskFilter* filter, const SkMatrix& matrix, |
| const SkRegion& clip, SkBounder* bounder, |
| GrPaint* grp) { |
| SkMask srcM, dstM; |
| |
| if (!SkDraw::DrawToMask(path, &clip.getBounds(), filter, &matrix, &srcM, |
| SkMask::kComputeBoundsAndRenderImage_CreateMode)) { |
| return false; |
| } |
| |
| SkAutoMaskImage autoSrc(&srcM, false); |
| |
| if (!filter->filterMask(&dstM, srcM, matrix, NULL)) { |
| return false; |
| } |
| // this will free-up dstM when we're done (allocated in filterMask()) |
| SkAutoMaskImage autoDst(&dstM, false); |
| |
| if (clip.quickReject(dstM.fBounds)) { |
| return false; |
| } |
| if (bounder && !bounder->doIRect(dstM.fBounds)) { |
| return false; |
| } |
| |
| // we now have a device-aligned 8bit mask in dstM, ready to be drawn using |
| // the current clip (and identity matrix) and grpaint settings |
| |
| // used to compute inverse view, if necessary |
| GrMatrix ivm = context->getMatrix(); |
| |
| GrAutoMatrix avm(context, GrMatrix::I()); |
| |
| const GrTextureDesc desc = { |
| kNone_GrTextureFlags, |
| kNone_GrAALevel, |
| dstM.fBounds.width(), |
| dstM.fBounds.height(), |
| kAlpha_8_GrPixelConfig |
| }; |
| |
| GrAutoScratchTexture ast(context, desc); |
| GrTexture* texture = ast.texture(); |
| |
| if (NULL == texture) { |
| return false; |
| } |
| texture->uploadTextureData(0, 0, desc.fWidth, desc.fHeight, |
| dstM.fImage, dstM.fRowBytes); |
| |
| if (grp->hasTextureOrMask() && ivm.invert(&ivm)) { |
| grp->preConcatActiveSamplerMatrices(ivm); |
| } |
| |
| static const int MASK_IDX = GrPaint::kMaxMasks - 1; |
| // we assume the last mask index is available for use |
| GrAssert(NULL == grp->getMask(MASK_IDX)); |
| grp->setMask(MASK_IDX, texture); |
| grp->getMaskSampler(MASK_IDX)->setClampNoFilter(); |
| |
| GrRect d; |
| d.setLTRB(GrIntToScalar(dstM.fBounds.fLeft), |
| GrIntToScalar(dstM.fBounds.fTop), |
| GrIntToScalar(dstM.fBounds.fRight), |
| GrIntToScalar(dstM.fBounds.fBottom)); |
| |
| GrMatrix m; |
| m.setTranslate(-dstM.fBounds.fLeft, -dstM.fBounds.fTop); |
| m.postIDiv(texture->width(), texture->height()); |
| grp->getMaskSampler(MASK_IDX)->setMatrix(m); |
| |
| context->drawRect(*grp, d); |
| return true; |
| } |
| |
| void SkGpuDevice::drawPath(const SkDraw& draw, const SkPath& origSrcPath, |
| const SkPaint& paint, const SkMatrix* prePathMatrix, |
| bool pathIsMutable) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| if (!this->skPaint2GrPaintShader(paint, |
| &act, |
| *draw.fMatrix, |
| &grPaint, |
| true)) { |
| return; |
| } |
| |
| // BEGIN lift from SkDraw::drawPath() |
| |
| SkPath* pathPtr = const_cast<SkPath*>(&origSrcPath); |
| bool doFill = true; |
| SkPath tmpPath; |
| |
| if (prePathMatrix) { |
| SkPath* result = pathPtr; |
| |
| if (!pathIsMutable) { |
| result = &tmpPath; |
| pathIsMutable = true; |
| } |
| // should I push prePathMatrix on our MV stack temporarily, instead |
| // of applying it here? See SkDraw.cpp |
| pathPtr->transform(*prePathMatrix, result); |
| pathPtr = result; |
| } |
| // at this point we're done with prePathMatrix |
| SkDEBUGCODE(prePathMatrix = (const SkMatrix*)0x50FF8001;) |
| |
| // This "if" is not part of the SkDraw::drawPath() lift. |
| // When we get a 1.0 wide stroke we hairline stroke it instead of creating |
| // a new stroked-path. This is motivated by canvas2D sites that draw |
| // lines as 1.0 wide stroked paths. We can consider doing an alpha-modulated- |
| // hairline for width < 1.0 when AA is enabled. |
| static const int gMatrixMask = ~(SkMatrix::kIdentity_Mask | |
| SkMatrix::kTranslate_Mask); |
| if (!paint.getPathEffect() && |
| SkPaint::kStroke_Style == paint.getStyle() && |
| !(draw.fMatrix->getType() & gMatrixMask) && |
| SK_Scalar1 == paint.getStrokeWidth()) { |
| doFill = false; |
| } |
| |
| if (doFill && (paint.getPathEffect() || |
| paint.getStyle() != SkPaint::kFill_Style)) { |
| doFill = paint.getFillPath(*pathPtr, &tmpPath); |
| pathPtr = &tmpPath; |
| } |
| |
| // END lift from SkDraw::drawPath() |
| |
| if (paint.getMaskFilter()) { |
| // avoid possibly allocating a new path in transform if we can |
| SkPath* devPathPtr = pathIsMutable ? pathPtr : &tmpPath; |
| |
| // transform the path into device space |
| pathPtr->transform(*draw.fMatrix, devPathPtr); |
| if (!drawWithGPUMaskFilter(fContext, *devPathPtr, paint.getMaskFilter(), |
| *draw.fMatrix, *draw.fClip, draw.fBounder, |
| &grPaint)) { |
| drawWithMaskFilter(fContext, *devPathPtr, paint.getMaskFilter(), |
| *draw.fMatrix, *draw.fClip, draw.fBounder, |
| &grPaint); |
| } |
| return; |
| } |
| |
| GrPathFill fill = kHairLine_PathFill; |
| |
| if (doFill) { |
| switch (pathPtr->getFillType()) { |
| case SkPath::kWinding_FillType: |
| fill = kWinding_PathFill; |
| break; |
| case SkPath::kEvenOdd_FillType: |
| fill = kEvenOdd_PathFill; |
| break; |
| case SkPath::kInverseWinding_FillType: |
| fill = kInverseWinding_PathFill; |
| break; |
| case SkPath::kInverseEvenOdd_FillType: |
| fill = kInverseEvenOdd_PathFill; |
| break; |
| default: |
| SkDebugf("Unsupported path fill type\n"); |
| return; |
| } |
| } |
| |
| fContext->drawPath(grPaint, *pathPtr, fill); |
| } |
| |
| void SkGpuDevice::drawBitmap(const SkDraw& draw, |
| const SkBitmap& bitmap, |
| const SkIRect* srcRectPtr, |
| const SkMatrix& m, |
| const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| SkIRect srcRect; |
| if (NULL == srcRectPtr) { |
| srcRect.set(0, 0, bitmap.width(), bitmap.height()); |
| } else { |
| srcRect = *srcRectPtr; |
| } |
| |
| if (paint.getMaskFilter()){ |
| // Convert the bitmap to a shader so that the rect can be drawn |
| // through drawRect, which supports mask filters. |
| SkBitmap tmp; // subset of bitmap, if necessary |
| const SkBitmap* bitmapPtr = &bitmap; |
| if (srcRectPtr) { |
| if (!bitmap.extractSubset(&tmp, srcRect)) { |
| return; // extraction failed |
| } |
| bitmapPtr = &tmp; |
| srcRect.set(0,0, srcRect.width(), srcRect.height()); |
| } |
| SkPaint paintWithTexture(paint); |
| paintWithTexture.setShader(SkShader::CreateBitmapShader( *bitmapPtr, |
| SkShader::kClamp_TileMode, SkShader::kClamp_TileMode))->unref(); |
| SkRect ScalarRect; |
| ScalarRect.set(srcRect); |
| |
| // Transform 'm' needs to be concatenated to the draw matrix, |
| // rather than transforming the primitive directly, so that 'm' will |
| // also affect the behavior of the mask filter. |
| SkMatrix drawMatrix; |
| drawMatrix.setConcat(*draw.fMatrix, m); |
| SkDraw transformedDraw(draw); |
| transformedDraw.fMatrix = &drawMatrix; |
| |
| this->drawRect(transformedDraw, ScalarRect, paintWithTexture); |
| |
| return; |
| } |
| |
| GrPaint grPaint; |
| if (!this->skPaint2GrPaintNoShader(paint, true, &grPaint, false)) { |
| return; |
| } |
| GrSamplerState* sampler = grPaint.getTextureSampler(kBitmapTextureIdx); |
| if (paint.isFilterBitmap()) { |
| sampler->setFilter(GrSamplerState::kBilinear_Filter); |
| } else { |
| sampler->setFilter(GrSamplerState::kNearest_Filter); |
| } |
| |
| const int maxTextureSize = fContext->getMaxTextureSize(); |
| if (bitmap.getTexture() || (bitmap.width() <= maxTextureSize && |
| bitmap.height() <= maxTextureSize)) { |
| // take the fast case |
| this->internalDrawBitmap(draw, bitmap, srcRect, m, &grPaint); |
| return; |
| } |
| |
| // undo the translate done by SkCanvas |
| int DX = SkMax32(0, srcRect.fLeft); |
| int DY = SkMax32(0, srcRect.fTop); |
| // compute clip bounds in local coordinates |
| SkIRect clipRect; |
| { |
| SkRect r; |
| r.set(draw.fClip->getBounds()); |
| SkMatrix matrix, inverse; |
| matrix.setConcat(*draw.fMatrix, m); |
| if (!matrix.invert(&inverse)) { |
| return; |
| } |
| inverse.mapRect(&r); |
| r.roundOut(&clipRect); |
| // apply the canvas' translate to our local clip |
| clipRect.offset(DX, DY); |
| } |
| |
| int nx = bitmap.width() / maxTextureSize; |
| int ny = bitmap.height() / maxTextureSize; |
| for (int x = 0; x <= nx; x++) { |
| for (int y = 0; y <= ny; y++) { |
| SkIRect tileR; |
| tileR.set(x * maxTextureSize, y * maxTextureSize, |
| (x + 1) * maxTextureSize, (y + 1) * maxTextureSize); |
| if (!SkIRect::Intersects(tileR, clipRect)) { |
| continue; |
| } |
| |
| SkIRect srcR = tileR; |
| if (!srcR.intersect(srcRect)) { |
| continue; |
| } |
| |
| SkBitmap tmpB; |
| if (bitmap.extractSubset(&tmpB, tileR)) { |
| // now offset it to make it "local" to our tmp bitmap |
| srcR.offset(-tileR.fLeft, -tileR.fTop); |
| |
| SkMatrix tmpM(m); |
| { |
| int dx = tileR.fLeft - DX + SkMax32(0, srcR.fLeft); |
| int dy = tileR.fTop - DY + SkMax32(0, srcR.fTop); |
| tmpM.preTranslate(SkIntToScalar(dx), SkIntToScalar(dy)); |
| } |
| this->internalDrawBitmap(draw, tmpB, srcR, tmpM, &grPaint); |
| } |
| } |
| } |
| } |
| |
| /* |
| * This is called by drawBitmap(), which has to handle images that may be too |
| * large to be represented by a single texture. |
| * |
| * internalDrawBitmap assumes that the specified bitmap will fit in a texture |
| * and that non-texture portion of the GrPaint has already been setup. |
| */ |
| void SkGpuDevice::internalDrawBitmap(const SkDraw& draw, |
| const SkBitmap& bitmap, |
| const SkIRect& srcRect, |
| const SkMatrix& m, |
| GrPaint* grPaint) { |
| SkASSERT(bitmap.width() <= fContext->getMaxTextureSize() && |
| bitmap.height() <= fContext->getMaxTextureSize()); |
| |
| SkAutoLockPixels alp(bitmap, !bitmap.getTexture()); |
| if (!bitmap.getTexture() && !bitmap.readyToDraw()) { |
| SkDebugf("nothing to draw\n"); |
| return; |
| } |
| |
| GrSamplerState* sampler = grPaint->getTextureSampler(kBitmapTextureIdx); |
| |
| sampler->setWrapX(GrSamplerState::kClamp_WrapMode); |
| sampler->setWrapY(GrSamplerState::kClamp_WrapMode); |
| sampler->setSampleMode(GrSamplerState::kNormal_SampleMode); |
| sampler->setMatrix(GrMatrix::I()); |
| |
| GrTexture* texture; |
| SkAutoCachedTexture act(this, bitmap, *sampler, &texture); |
| if (NULL == texture) { |
| return; |
| } |
| |
| grPaint->setTexture(kShaderTextureIdx, texture); |
| |
| GrRect dstRect = SkRect::MakeWH(GrIntToScalar(srcRect.width()), |
| GrIntToScalar(srcRect.height())); |
| GrRect paintRect; |
| paintRect.setLTRB(GrFixedToScalar((srcRect.fLeft << 16) / bitmap.width()), |
| GrFixedToScalar((srcRect.fTop << 16) / bitmap.height()), |
| GrFixedToScalar((srcRect.fRight << 16) / bitmap.width()), |
| GrFixedToScalar((srcRect.fBottom << 16) / bitmap.height())); |
| |
| if (GrSamplerState::kNearest_Filter != sampler->getFilter() && |
| (srcRect.width() < bitmap.width() || |
| srcRect.height() < bitmap.height())) { |
| // If drawing a subrect of the bitmap and filtering is enabled, |
| // use a constrained texture domain to avoid color bleeding |
| GrScalar left, top, right, bottom; |
| if (srcRect.width() > 1) { |
| GrScalar border = GR_ScalarHalf / bitmap.width(); |
| left = paintRect.left() + border; |
| right = paintRect.right() - border; |
| } else { |
| left = right = GrScalarHalf(paintRect.left() + paintRect.right()); |
| } |
| if (srcRect.height() > 1) { |
| GrScalar border = GR_ScalarHalf / bitmap.height(); |
| top = paintRect.top() + border; |
| bottom = paintRect.bottom() - border; |
| } else { |
| top = bottom = GrScalarHalf(paintRect.top() + paintRect.bottom()); |
| } |
| GrRect textureDomain; |
| textureDomain.setLTRB(left, top, right, bottom); |
| sampler->setTextureDomain(textureDomain); |
| } |
| |
| fContext->drawRectToRect(*grPaint, dstRect, paintRect, &m); |
| } |
| |
| void SkGpuDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap, |
| int left, int top, const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| SkAutoLockPixels alp(bitmap); |
| if (!bitmap.getTexture() && !bitmap.readyToDraw()) { |
| return; |
| } |
| |
| GrPaint grPaint; |
| if(!this->skPaint2GrPaintNoShader(paint, true, &grPaint, false)) { |
| return; |
| } |
| |
| GrAutoMatrix avm(fContext, GrMatrix::I()); |
| |
| GrSamplerState* sampler = grPaint.getTextureSampler(kBitmapTextureIdx); |
| |
| GrTexture* texture; |
| sampler->setClampNoFilter(); |
| SkAutoCachedTexture act(this, bitmap, *sampler, &texture); |
| |
| grPaint.setTexture(kBitmapTextureIdx, texture); |
| |
| fContext->drawRectToRect(grPaint, |
| GrRect::MakeXYWH(GrIntToScalar(left), |
| GrIntToScalar(top), |
| GrIntToScalar(bitmap.width()), |
| GrIntToScalar(bitmap.height())), |
| GrRect::MakeWH(GR_Scalar1, GR_Scalar1)); |
| } |
| |
| void SkGpuDevice::drawDevice(const SkDraw& draw, SkDevice* dev, |
| int x, int y, const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| GrPaint grPaint; |
| if (!((SkGpuDevice*)dev)->bindDeviceAsTexture(&grPaint) || |
| !this->skPaint2GrPaintNoShader(paint, true, &grPaint, false)) { |
| return; |
| } |
| |
| GrTexture* devTex = grPaint.getTexture(0); |
| SkASSERT(NULL != devTex); |
| |
| const SkBitmap& bm = dev->accessBitmap(false); |
| int w = bm.width(); |
| int h = bm.height(); |
| |
| GrAutoMatrix avm(fContext, GrMatrix::I()); |
| |
| grPaint.getTextureSampler(kBitmapTextureIdx)->setClampNoFilter(); |
| |
| GrRect dstRect = GrRect::MakeXYWH(GrIntToScalar(x), |
| GrIntToScalar(y), |
| GrIntToScalar(w), |
| GrIntToScalar(h)); |
| // The device being drawn may not fill up its texture (saveLayer uses |
| // the approximate ). |
| GrRect srcRect = GrRect::MakeWH(GR_Scalar1 * w / devTex->width(), |
| GR_Scalar1 * h / devTex->height()); |
| |
| fContext->drawRectToRect(grPaint, dstRect, srcRect); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| // must be in SkCanvas::VertexMode order |
| static const GrPrimitiveType gVertexMode2PrimitiveType[] = { |
| kTriangles_PrimitiveType, |
| kTriangleStrip_PrimitiveType, |
| kTriangleFan_PrimitiveType, |
| }; |
| |
| void SkGpuDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode, |
| int vertexCount, const SkPoint vertices[], |
| const SkPoint texs[], const SkColor colors[], |
| SkXfermode* xmode, |
| const uint16_t indices[], int indexCount, |
| const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| // we ignore the shader if texs is null. |
| if (NULL == texs) { |
| if (!this->skPaint2GrPaintNoShader(paint, |
| false, |
| &grPaint, |
| NULL == colors)) { |
| return; |
| } |
| } else { |
| if (!this->skPaint2GrPaintShader(paint, &act, |
| *draw.fMatrix, |
| &grPaint, |
| NULL == colors)) { |
| return; |
| } |
| } |
| |
| if (NULL != xmode && NULL != texs && NULL != colors) { |
| SkXfermode::Mode mode; |
| if (!SkXfermode::IsMode(xmode, &mode) || |
| SkXfermode::kMultiply_Mode != mode) { |
| SkDebugf("Unsupported vertex-color/texture xfer mode.\n"); |
| #if 0 |
| return |
| #endif |
| } |
| } |
| |
| SkAutoSTMalloc<128, GrColor> convertedColors(0); |
| if (NULL != colors) { |
| // need to convert byte order and from non-PM to PM |
| convertedColors.realloc(vertexCount); |
| for (int i = 0; i < vertexCount; ++i) { |
| convertedColors[i] = SkGr::SkColor2GrColor(colors[i]); |
| } |
| colors = convertedColors.get(); |
| } |
| fContext->drawVertices(grPaint, |
| gVertexMode2PrimitiveType[vmode], |
| vertexCount, |
| (GrPoint*) vertices, |
| (GrPoint*) texs, |
| colors, |
| indices, |
| indexCount); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void GlyphCacheAuxProc(void* data) { |
| delete (GrFontScaler*)data; |
| } |
| |
| static GrFontScaler* get_gr_font_scaler(SkGlyphCache* cache) { |
| void* auxData; |
| GrFontScaler* scaler = NULL; |
| if (cache->getAuxProcData(GlyphCacheAuxProc, &auxData)) { |
| scaler = (GrFontScaler*)auxData; |
| } |
| if (NULL == scaler) { |
| scaler = new SkGrFontScaler(cache); |
| cache->setAuxProc(GlyphCacheAuxProc, scaler); |
| } |
| return scaler; |
| } |
| |
| static void SkGPU_Draw1Glyph(const SkDraw1Glyph& state, |
| SkFixed fx, SkFixed fy, |
| const SkGlyph& glyph) { |
| SkASSERT(glyph.fWidth > 0 && glyph.fHeight > 0); |
| |
| GrSkDrawProcs* procs = (GrSkDrawProcs*)state.fDraw->fProcs; |
| |
| if (NULL == procs->fFontScaler) { |
| procs->fFontScaler = get_gr_font_scaler(state.fCache); |
| } |
| |
| /* |
| * What should we do with fy? (assuming horizontal/latin text) |
| * |
| * The raster code calls SkFixedFloorToFixed on it, as it does with fx. |
| * It calls that rather than round, because our caller has already added |
| * SK_FixedHalf, so that calling floor gives us the rounded integer. |
| * |
| * Test code between raster and gpu (they should draw the same) |
| * |
| * canvas->drawText("Hamburgefons", 12, 0, 16.5f, paint); |
| * |
| * Perhaps we should only perform this integralization if there is no |
| * fExtMatrix... |
| */ |
| fy = SkFixedFloorToFixed(fy); |
| |
| procs->fTextContext->drawPackedGlyph(GrGlyph::Pack(glyph.getGlyphID(), fx, 0), |
| SkFixedFloorToFixed(fx), fy, |
| procs->fFontScaler); |
| } |
| |
| SkDrawProcs* SkGpuDevice::initDrawForText(GrTextContext* context) { |
| |
| // deferred allocation |
| if (NULL == fDrawProcs) { |
| fDrawProcs = new GrSkDrawProcs; |
| fDrawProcs->fD1GProc = SkGPU_Draw1Glyph; |
| fDrawProcs->fContext = fContext; |
| } |
| |
| // init our (and GL's) state |
| fDrawProcs->fTextContext = context; |
| fDrawProcs->fFontScaler = NULL; |
| return fDrawProcs; |
| } |
| |
| void SkGpuDevice::drawText(const SkDraw& draw, const void* text, |
| size_t byteLength, SkScalar x, SkScalar y, |
| const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| if (draw.fMatrix->getType() & SkMatrix::kPerspective_Mask) { |
| // this guy will just call our drawPath() |
| draw.drawText((const char*)text, byteLength, x, y, paint); |
| } else { |
| SkDraw myDraw(draw); |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| |
| if (!this->skPaint2GrPaintShader(paint, |
| &act, |
| *draw.fMatrix, |
| &grPaint, |
| true)) { |
| return; |
| } |
| GrTextContext context(fContext, grPaint, draw.fExtMatrix); |
| myDraw.fProcs = this->initDrawForText(&context); |
| this->INHERITED::drawText(myDraw, text, byteLength, x, y, paint); |
| } |
| } |
| |
| void SkGpuDevice::drawPosText(const SkDraw& draw, const void* text, |
| size_t byteLength, const SkScalar pos[], |
| SkScalar constY, int scalarsPerPos, |
| const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| if (draw.fMatrix->getType() & SkMatrix::kPerspective_Mask) { |
| // this guy will just call our drawPath() |
| draw.drawPosText((const char*)text, byteLength, pos, constY, |
| scalarsPerPos, paint); |
| } else { |
| SkDraw myDraw(draw); |
| |
| GrPaint grPaint; |
| SkAutoCachedTexture act; |
| if (!this->skPaint2GrPaintShader(paint, |
| &act, |
| *draw.fMatrix, |
| &grPaint, |
| true)) { |
| return; |
| } |
| |
| GrTextContext context(fContext, grPaint, draw.fExtMatrix); |
| myDraw.fProcs = this->initDrawForText(&context); |
| this->INHERITED::drawPosText(myDraw, text, byteLength, pos, constY, |
| scalarsPerPos, paint); |
| } |
| } |
| |
| void SkGpuDevice::drawTextOnPath(const SkDraw& draw, const void* text, |
| size_t len, const SkPath& path, |
| const SkMatrix* m, const SkPaint& paint) { |
| CHECK_SHOULD_DRAW(draw); |
| |
| SkASSERT(draw.fDevice == this); |
| draw.drawTextOnPath((const char*)text, len, path, m, paint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkGpuDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) { |
| if (!paint.isLCDRenderText()) { |
| // we're cool with the paint as is |
| return false; |
| } |
| |
| if (paint.getShader() || |
| paint.getXfermode() || // unless its srcover |
| paint.getMaskFilter() || |
| paint.getRasterizer() || |
| paint.getColorFilter() || |
| paint.getPathEffect() || |
| paint.isFakeBoldText() || |
| paint.getStyle() != SkPaint::kFill_Style) { |
| // turn off lcd |
| flags->fFlags = paint.getFlags() & ~SkPaint::kLCDRenderText_Flag; |
| flags->fHinting = paint.getHinting(); |
| return true; |
| } |
| // we're cool with the paint as is |
| return false; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkGpuDevice::TexCache SkGpuDevice::lockCachedTexture(const SkBitmap& bitmap, |
| const GrSamplerState& sampler, |
| TexType type) { |
| GrContext::TextureCacheEntry entry; |
| GrContext* ctx = this->context(); |
| |
| if (kBitmap_TexType != type) { |
| const GrTextureDesc desc = { |
| kRenderTarget_GrTextureFlagBit, |
| kNone_GrAALevel, |
| bitmap.width(), |
| bitmap.height(), |
| SkGr::Bitmap2PixelConfig(bitmap) |
| }; |
| GrContext::ScratchTexMatch match; |
| if (kSaveLayerDeviceRenderTarget_TexType == type) { |
| // we know layers will only be drawn through drawDevice. |
| // drawDevice has been made to work with content embedded in a |
| // larger texture so its okay to use the approximate version. |
| match = GrContext::kApprox_ScratchTexMatch; |
| } else { |
| SkASSERT(kDeviceRenderTarget_TexType == type); |
| match = GrContext::kExact_ScratchTexMatch; |
| } |
| entry = ctx->lockScratchTexture(desc, match); |
| } else { |
| if (!bitmap.isVolatile()) { |
| GrContext::TextureKey key = bitmap.getGenerationID(); |
| key |= ((uint64_t) bitmap.pixelRefOffset()) << 32; |
| |
| entry = ctx->findAndLockTexture(key, bitmap.width(), |
| bitmap.height(), sampler); |
| if (NULL == entry.texture()) { |
| entry = sk_gr_create_bitmap_texture(ctx, key, sampler, |
| bitmap); |
| } |
| } else { |
| entry = sk_gr_create_bitmap_texture(ctx, gUNCACHED_KEY, sampler, bitmap); |
| } |
| if (NULL == entry.texture()) { |
| GrPrintf("---- failed to create texture for cache [%d %d]\n", |
| bitmap.width(), bitmap.height()); |
| } |
| } |
| return entry; |
| } |
| |
| void SkGpuDevice::unlockCachedTexture(TexCache cache) { |
| this->context()->unlockTexture(cache); |
| } |
| |
| SkDevice* SkGpuDevice::onCreateCompatibleDevice(SkBitmap::Config config, |
| int width, int height, |
| bool isOpaque, |
| Usage usage) { |
| return SkNEW_ARGS(SkGpuDevice,(this->context(), config, |
| width, height, usage)); |
| } |
| |