Ejemplo n.º 1
0
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
        GrDrawTarget* target,
        const SkIRect& rect) {
    GrDrawState* drawState = target->drawState();

    GrDrawState::AutoViewMatrixRestore avmr;
    if (!avmr.setIdentity(drawState)) {
        return;
    }
    GrDrawState::AutoRestoreEffects are(drawState);

    SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
                                      SK_Scalar1 * rect.fTop,
                                      SK_Scalar1 * rect.fRight,
                                      SK_Scalar1 * rect.fBottom);

    // We want to use device coords to compute the texture coordinates. We set our matrix to be
    // equal to the view matrix followed by a translation so that the top-left of the device bounds
    // maps to 0,0, and then a scaling matrix to normalized coords. We apply this matrix to the
    // vertex positions rather than local coords.
    SkMatrix maskMatrix;
    maskMatrix.setIDiv(texture->width(), texture->height());
    maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
    maskMatrix.preConcat(drawState->getViewMatrix());

    drawState->addCoverageEffect(
        GrSimpleTextureEffect::Create(texture,
                                      maskMatrix,
                                      GrTextureParams::kNone_FilterMode,
                                      kPosition_GrCoordSet))->unref();

    target->drawSimpleRect(dstRect);
}
Ejemplo n.º 2
0
void GrClipMaskManager::mergeMask(GrPipelineBuilder* pipelineBuilder,
                                  GrTexture* dstMask,
                                  GrTexture* srcMask,
                                  SkRegion::Op op,
                                  const SkIRect& dstBound,
                                  const SkIRect& srcBound) {
    pipelineBuilder->setRenderTarget(dstMask->asRenderTarget());

    // We want to invert the coverage here
    set_coverage_drawing_xpf(op, false, pipelineBuilder);

    SkMatrix sampleM;
    sampleM.setIDiv(srcMask->width(), srcMask->height());

    pipelineBuilder->addCoverageFragmentProcessor(
        GrTextureDomainEffect::Create(srcMask,
                                      sampleM,
                                      GrTextureDomain::MakeTexelDomain(srcMask, srcBound),
                                      GrTextureDomain::kDecal_Mode,
                                      GrTextureParams::kNone_FilterMode))->unref();

    // The color passed in here does not matter since the coverageSetOpXP won't read it.
    fDrawTarget->drawNonAARect(*pipelineBuilder,
                               GrColor_WHITE,
                               SkMatrix::I(),
                               SkRect::Make(dstBound));
}
Ejemplo n.º 3
0
void GrClipMaskManager::mergeMask(GrTexture* dstMask,
                                  GrTexture* srcMask,
                                  SkRegion::Op op,
                                  const SkIRect& dstBound,
                                  const SkIRect& srcBound) {
    GrDrawState::AutoViewMatrixRestore avmr;
    GrDrawState* drawState = fGpu->drawState();
    SkAssertResult(avmr.setIdentity(drawState));
    GrDrawState::AutoRestoreEffects are(drawState);

    drawState->setRenderTarget(dstMask->asRenderTarget());

    setup_boolean_blendcoeffs(drawState, op);

    SkMatrix sampleM;
    sampleM.setIDiv(srcMask->width(), srcMask->height());

    drawState->addColorEffect(
        GrTextureDomainEffect::Create(srcMask,
                                      sampleM,
                                      GrTextureDomain::MakeTexelDomain(srcMask, srcBound),
                                      GrTextureDomain::kDecal_Mode,
                                      GrTextureParams::kNone_FilterMode))->unref();
    fGpu->drawSimpleRect(SkRect::Make(dstBound), NULL);
}
Ejemplo n.º 4
0
void GrClipMaskManager::mergeMask(GrTexture* dstMask,
                                  GrTexture* srcMask,
                                  SkRegion::Op op,
                                  const GrIRect& dstBound,
                                  const GrIRect& srcBound) {
    GrDrawState* drawState = fGpu->drawState();
    SkMatrix oldMatrix = drawState->getViewMatrix();
    drawState->viewMatrix()->reset();

    drawState->setRenderTarget(dstMask->asRenderTarget());

    setup_boolean_blendcoeffs(drawState, op);

    SkMatrix sampleM;
    sampleM.setIDiv(srcMask->width(), srcMask->height());
    drawState->setEffect(0,
        GrTextureDomainEffect::Create(srcMask,
                                      sampleM,
                                      GrTextureDomainEffect::MakeTexelDomain(srcMask, srcBound),
                                      GrTextureDomainEffect::kDecal_WrapMode,
                                      false))->unref();
    fGpu->drawSimpleRect(SkRect::MakeFromIRect(dstBound), NULL);

    drawState->disableStage(0);
    drawState->setViewMatrix(oldMatrix);
}
BOOL
_DC::ExtTextOut(int x, int y, UINT options, LPCRECTDef lprect, const char* pszText, const int * lpDx){
	if( !context_ || !pszText)
		return FALSE;

	// Invalid rect area.
	if( lprect && (lprect->right <= 0 || lprect->bottom <= 0) )
		return FALSE;
	
	BOOL		bRet = FALSE;
	if (_canvas) {
		_skPaintText.setTextEncoding(SkPaint::TextEncoding::kUTF8_TextEncoding);

		_canvas->save();
		SkMatrix m;
		m.setIDiv(1.0f, -1.0f);
		_canvas->setMatrix(m);

		int bytesLen = _tcslen(pszText)*sizeof(char);
		SkScalar textSize = _skPaintText.getTextSize();
		
		int height = _canvas->imageInfo().fHeight;
		_canvas->drawText(pszText, bytesLen, SkIntToScalar(x), -1.0f * SkIntToScalar(height - y) + textSize, _skPaintText);
		_canvas->restore();
		bRet = TRUE;
	}
	else {
		wchar_t		wszTemp[256];
		int			nLen = StringHelper::UTF8ToUnicode(pszText, wszTemp, 255);
		bRet = (TRUE == ::ExtTextOutW(context_, x, y, options, lprect, wszTemp, nLen, NULL));
	}
	return	bRet;
	}
Ejemplo n.º 6
0
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
                                              GrDrawTarget* target,
                                              GrPipelineBuilder* pipelineBuilder,
                                              GrColor color,
                                              const SkMatrix& viewMatrix,
                                              const SkIRect& rect) {
    SkMatrix invert;
    if (!viewMatrix.invert(&invert)) {
        return;
    }
    GrPipelineBuilder::AutoRestoreFragmentProcessors arfp(pipelineBuilder);

    SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
                                      SK_Scalar1 * rect.fTop,
                                      SK_Scalar1 * rect.fRight,
                                      SK_Scalar1 * rect.fBottom);

    // 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;
    maskMatrix.setIDiv(texture->width(), texture->height());
    maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));

    pipelineBuilder->addCoverageProcessor(
                         GrSimpleTextureEffect::Create(texture,
                                                       maskMatrix,
                                                       GrTextureParams::kNone_FilterMode,
                                                       kDevice_GrCoordSet))->unref();

    target->drawRect(pipelineBuilder, color, SkMatrix::I(), dstRect, NULL, &invert);
}
Ejemplo n.º 7
0
const GrFragmentProcessor* SkImageShader::asFragmentProcessor(GrContext* context,
        const SkMatrix& viewM,
        const SkMatrix* localMatrix,
        SkFilterQuality filterQuality,
        GrProcessorDataManager* mgr) const {
    SkMatrix matrix;
    matrix.setIDiv(fImage->width(), fImage->height());

    SkMatrix lmInverse;
    if (!this->getLocalMatrix().invert(&lmInverse)) {
        return nullptr;
    }
    if (localMatrix) {
        SkMatrix inv;
        if (!localMatrix->invert(&inv)) {
            return nullptr;
        }
        lmInverse.postConcat(inv);
    }
    matrix.preConcat(lmInverse);

    SkShader::TileMode tm[] = { fTileModeX, fTileModeY };

    // Must set wrap and filter on the sampler before requesting a texture. In two places below
    // we check the matrix scale factors to determine how to interpret the filter quality setting.
    // This completely ignores the complexity of the drawVertices case where explicit local coords
    // are provided by the caller.
    bool doBicubic;
    GrTextureParams::FilterMode textureFilterMode =
        GrSkFilterQualityToGrFilterMode(filterQuality, viewM, this->getLocalMatrix(), &doBicubic);
    GrTextureParams params(tm, textureFilterMode);

    SkImageUsageType usageType;
    if (kClamp_TileMode == fTileModeX && kClamp_TileMode == fTileModeY) {
        usageType = kUntiled_SkImageUsageType;
    } else if (GrTextureParams::kNone_FilterMode == textureFilterMode) {
        usageType = kTiled_Unfiltered_SkImageUsageType;
    } else {
        usageType = kTiled_Filtered_SkImageUsageType;
    }

    SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(context, usageType));
    if (!texture) {
        return nullptr;
    }

    SkAutoTUnref<GrFragmentProcessor> inner;
    if (doBicubic) {
        inner.reset(GrBicubicEffect::Create(mgr, texture, matrix, tm));
    } else {
        inner.reset(GrSimpleTextureEffect::Create(mgr, texture, matrix, params));
    }

    if (GrPixelConfigIsAlphaOnly(texture->config())) {
        return SkRef(inner.get());
    }
    return GrFragmentProcessor::MulOuputByInputAlpha(inner);
}
bool SkBitmapProcShader::asFragmentProcessor(GrContext* context, const SkPaint& paint,
                                             const SkMatrix& viewM,
                                             const SkMatrix* localMatrix, GrColor* paintColor,
                                             GrProcessorDataManager* procDataManager,
                                             GrFragmentProcessor** fp) const {
    SkMatrix matrix;
    matrix.setIDiv(fRawBitmap.width(), fRawBitmap.height());

    SkMatrix lmInverse;
    if (!this->getLocalMatrix().invert(&lmInverse)) {
        return false;
    }
    if (localMatrix) {
        SkMatrix inv;
        if (!localMatrix->invert(&inv)) {
            return false;
        }
        lmInverse.postConcat(inv);
    }
    matrix.preConcat(lmInverse);

    SkShader::TileMode tm[] = {
        (TileMode)fTileModeX,
        (TileMode)fTileModeY,
    };

    // Must set wrap and filter on the sampler before requesting a texture. In two places below
    // we check the matrix scale factors to determine how to interpret the filter quality setting.
    // This completely ignores the complexity of the drawVertices case where explicit local coords
    // are provided by the caller.
    bool doBicubic;
    GrTextureParams::FilterMode textureFilterMode =
            GrSkFilterQualityToGrFilterMode(paint.getFilterQuality(), viewM, this->getLocalMatrix(),
                                            &doBicubic);
    GrTextureParams params(tm, textureFilterMode);
    SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, fRawBitmap, &params));

    if (!texture) {
        SkErrorInternals::SetError( kInternalError_SkError,
                                    "Couldn't convert bitmap to texture.");
        return false;
    }

    *paintColor = (kAlpha_8_SkColorType == fRawBitmap.colorType()) ?
                                                SkColor2GrColor(paint.getColor()) :
                                                SkColor2GrColorJustAlpha(paint.getColor());

    if (doBicubic) {
        *fp = GrBicubicEffect::Create(procDataManager, texture, matrix, tm);
    } else {
        *fp = GrSimpleTextureEffect::Create(procDataManager, texture, matrix, params);
    }

    return true;
}
Ejemplo n.º 9
0
////////////////////////////////////////////////////////////////////////////////
// set up the draw state to enable the aa clipping mask. Besides setting up the
// stage matrix this also alters the vertex layout
static const GrFragmentProcessor* create_fp_for_mask(GrTexture* result, const SkIRect &devBound) {
    SkMatrix mat;
    // We use device coords to compute the texture coordinates. We set our matrix to be a
    // translation to the devBound, and then a scaling matrix to normalized coords.
    mat.setIDiv(result->width(), result->height());
    mat.preTranslate(SkIntToScalar(-devBound.fLeft),
                     SkIntToScalar(-devBound.fTop));

    SkIRect domainTexels = SkIRect::MakeWH(devBound.width(), devBound.height());
    return GrTextureDomainEffect::Create(result,
                                         mat,
                                         GrTextureDomain::MakeTexelDomain(result, domainTexels),
                                         GrTextureDomain::kDecal_Mode,
                                         GrTextureParams::kNone_FilterMode,
                                         kDevice_GrCoordSet);
}
Ejemplo n.º 10
0
sk_sp<GrFragmentProcessor> SkImageShader::asFragmentProcessor(const AsFPArgs& args) const {
    SkMatrix matrix;
    matrix.setIDiv(fImage->width(), fImage->height());

    SkMatrix lmInverse;
    if (!this->getLocalMatrix().invert(&lmInverse)) {
        return nullptr;
    }
    if (args.fLocalMatrix) {
        SkMatrix inv;
        if (!args.fLocalMatrix->invert(&inv)) {
            return nullptr;
        }
        lmInverse.postConcat(inv);
    }
    matrix.preConcat(lmInverse);

    SkShader::TileMode tm[] = { fTileModeX, fTileModeY };

    // Must set wrap and filter on the sampler before requesting a texture. In two places below
    // we check the matrix scale factors to determine how to interpret the filter quality setting.
    // This completely ignores the complexity of the drawVertices case where explicit local coords
    // are provided by the caller.
    bool doBicubic;
    GrTextureParams::FilterMode textureFilterMode =
        GrSkFilterQualityToGrFilterMode(args.fFilterQuality, *args.fViewMatrix, this->getLocalMatrix(),
                                        &doBicubic);
    GrTextureParams params(tm, textureFilterMode);
    SkAutoTUnref<GrTexture> texture(as_IB(fImage)->asTextureRef(args.fContext, params,
                                    args.fGammaTreatment));
    if (!texture) {
        return nullptr;
    }

    sk_sp<GrFragmentProcessor> inner;
    if (doBicubic) {
        inner = GrBicubicEffect::Make(texture, nullptr, matrix, tm);
    } else {
        inner = GrSimpleTextureEffect::Make(texture, nullptr, matrix, params);
    }

    if (GrPixelConfigIsAlphaOnly(texture->config())) {
        return inner;
    }
    return sk_sp<GrFragmentProcessor>(GrFragmentProcessor::MulOutputByInputAlpha(std::move(inner)));
}
Ejemplo n.º 11
0
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
        GrDrawTarget* target,
        const GrIRect& rect) {
    GrDrawState* drawState = target->drawState();

    GrDrawState::AutoDeviceCoordDraw adcd(drawState);
    if (!adcd.succeeded()) {
        return;
    }
    enum {
        // the SW path renderer shares this stage with glyph
        // rendering (kGlyphMaskStage in GrTextContext)
        // && edge rendering (kEdgeEffectStage in GrContext)
        kPathMaskStage = GrPaint::kTotalStages,
    };

    GrRect dstRect = GrRect::MakeLTRB(
                         SK_Scalar1 * rect.fLeft,
                         SK_Scalar1 * rect.fTop,
                         SK_Scalar1 * rect.fRight,
                         SK_Scalar1 * rect.fBottom);

    // We want to use device coords to compute the texture coordinates. We set our matrix to be
    // equal to the view matrix followed by a translation so that the top-left of the device bounds
    // maps to 0,0, and then a scaling matrix to normalized coords. We apply this matrix to the
    // vertex positions rather than local coords.
    SkMatrix maskMatrix;
    maskMatrix.setIDiv(texture->width(), texture->height());
    maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
    maskMatrix.preConcat(drawState->getViewMatrix());

    GrAssert(!drawState->isStageEnabled(kPathMaskStage));
    drawState->setEffect(kPathMaskStage,
                         GrSimpleTextureEffect::Create(texture,
                                 maskMatrix,
                                 false,
                                 GrEffect::kPosition_CoordsType))->unref();

    target->drawSimpleRect(dstRect);
    drawState->disableStage(kPathMaskStage);
}
Ejemplo n.º 12
0
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
                                              GrDrawContext* drawContext,
                                              const GrPaint* paint,
                                              const GrUserStencilSettings* userStencilSettings,
                                              const GrClip& clip,
                                              GrColor color,
                                              const SkMatrix& viewMatrix,
                                              const SkIRect& rect) {
    SkMatrix invert;
    if (!viewMatrix.invert(&invert)) {
        return;
    }

    SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
                                      SK_Scalar1 * rect.fTop,
                                      SK_Scalar1 * rect.fRight,
                                      SK_Scalar1 * rect.fBottom);

    // 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;
    maskMatrix.setIDiv(texture->width(), texture->height());
    maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));

    GrPipelineBuilder pipelineBuilder(*paint, drawContext->isUnifiedMultisampled());
    pipelineBuilder.setRenderTarget(drawContext->accessRenderTarget());
    pipelineBuilder.setUserStencil(userStencilSettings);

    pipelineBuilder.addCoverageFragmentProcessor(
                         GrSimpleTextureEffect::Create(texture,
                                                       maskMatrix,
                                                       GrTextureParams::kNone_FilterMode,
                                                       kDevice_GrCoordSet))->unref();

    SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
                                                                        dstRect, nullptr, &invert));
    drawContext->drawBatch(pipelineBuilder, clip, batch);
}
Ejemplo n.º 13
0
GrTexture* GaussianBlur(GrContext* context,
                        GrTexture* srcTexture,
                        bool canClobberSrc,
                        const SkRect& rect,
                        bool cropToRect,
                        float sigmaX,
                        float sigmaY) {
    SkASSERT(NULL != context);

    GrContext::AutoRenderTarget art(context);

    GrContext::AutoMatrix am;
    am.setIdentity(context);

    SkIRect clearRect;
    int scaleFactorX, radiusX;
    int scaleFactorY, radiusY;
    sigmaX = adjust_sigma(sigmaX, &scaleFactorX, &radiusX);
    sigmaY = adjust_sigma(sigmaY, &scaleFactorY, &radiusY);

    SkRect srcRect(rect);
    scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
    srcRect.roundOut();
    scale_rect(&srcRect, static_cast<float>(scaleFactorX),
                         static_cast<float>(scaleFactorY));

    GrContext::AutoClip acs(context, SkRect::MakeWH(srcRect.width(), srcRect.height()));

    SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
             kRGBA_8888_GrPixelConfig == srcTexture->config() ||
             kAlpha_8_GrPixelConfig == srcTexture->config());

    GrTextureDesc desc;
    desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
    desc.fWidth = SkScalarFloorToInt(srcRect.width());
    desc.fHeight = SkScalarFloorToInt(srcRect.height());
    desc.fConfig = srcTexture->config();

    GrAutoScratchTexture temp1, temp2;
    GrTexture* dstTexture = temp1.set(context, desc);
    GrTexture* tempTexture = canClobberSrc ? srcTexture : temp2.set(context, desc);
    if (NULL == dstTexture || NULL == tempTexture) {
        return NULL;
    }

    for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
        GrPaint paint;
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());
        context->setRenderTarget(dstTexture->asRenderTarget());
        SkRect dstRect(srcRect);
        if (cropToRect && i == 1) {
            dstRect.offset(-dstRect.fLeft, -dstRect.fTop);
            SkRect domain;
            matrix.mapRect(&domain, rect);
            domain.inset(i < scaleFactorX ? SK_ScalarHalf / srcTexture->width() : 0.0f,
                         i < scaleFactorY ? SK_ScalarHalf / srcTexture->height() : 0.0f);
            SkAutoTUnref<GrEffectRef> effect(GrTextureDomainEffect::Create(
                srcTexture,
                matrix,
                domain,
                GrTextureDomainEffect::kDecal_WrapMode,
                GrTextureParams::kBilerp_FilterMode));
            paint.addColorEffect(effect);
        } else {
            GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
            paint.addColorTextureEffect(srcTexture, matrix, params);
        }
        scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
                             i < scaleFactorY ? 0.5f : 1.0f);
        context->drawRectToRect(paint, dstRect, srcRect);
        srcRect = dstRect;
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);
    }

    SkIRect srcIRect;
    srcRect.roundOut(&srcIRect);

    if (sigmaX > 0.0f) {
        if (scaleFactorX > 1) {
            // Clear out a radius to the right of the srcRect to prevent the
            // X convolution from reading garbage.
            clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                          radiusX, srcIRect.height());
            context->clear(&clearRect, 0x0, false);
        }
        context->setRenderTarget(dstTexture->asRenderTarget());
        SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
        convolve_gaussian(context, srcRect, dstRect, srcTexture,
                          Gr1DKernelEffect::kX_Direction, radiusX, sigmaX, cropToRect);
        srcTexture = dstTexture;
        srcRect = dstRect;
        SkTSwap(dstTexture, tempTexture);
    }

    if (sigmaY > 0.0f) {
        if (scaleFactorY > 1 || sigmaX > 0.0f) {
            // Clear out a radius below the srcRect to prevent the Y
            // convolution from reading garbage.
            clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
                                          srcIRect.width(), radiusY);
            context->clear(&clearRect, 0x0, false);
        }

        context->setRenderTarget(dstTexture->asRenderTarget());
        SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
        convolve_gaussian(context, srcRect, dstRect, srcTexture,
                          Gr1DKernelEffect::kY_Direction, radiusY, sigmaY, cropToRect);
        srcTexture = dstTexture;
        srcRect = dstRect;
        SkTSwap(dstTexture, tempTexture);
    }

    if (scaleFactorX > 1 || scaleFactorY > 1) {
        // Clear one pixel to the right and below, to accommodate bilinear
        // upsampling.
        clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
                                      srcIRect.width() + 1, 1);
        context->clear(&clearRect, 0x0, false);
        clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                      1, srcIRect.height());
        context->clear(&clearRect, 0x0, false);
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());
        context->setRenderTarget(dstTexture->asRenderTarget());

        GrPaint paint;
        // FIXME:  this should be mitchell, not bilinear.
        GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
        paint.addColorTextureEffect(srcTexture, matrix, params);

        SkRect dstRect(srcRect);
        scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
        context->drawRectToRect(paint, dstRect, srcRect);
        srcRect = dstRect;
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);
    }
    if (srcTexture == temp1.texture()) {
        return temp1.detach();
    } else if (srcTexture == temp2.texture()) {
        return temp2.detach();
    } else {
        srcTexture->ref();
        return srcTexture;
    }
}
Ejemplo n.º 14
0
GrTexture* GaussianBlur(GrContext* context,
                        GrTexture* srcTexture,
                        bool canClobberSrc,
                        const SkRect& dstBounds,
                        const SkRect* srcBounds,
                        float sigmaX,
                        float sigmaY,
                        GrTextureProvider::SizeConstraint constraint) {
    SkASSERT(context);
    SkIRect clearRect;
    int scaleFactorX, radiusX;
    int scaleFactorY, radiusY;
    int maxTextureSize = context->caps()->maxTextureSize();
    sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX);
    sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY);

    SkPoint srcOffset = SkPoint::Make(-dstBounds.x(), -dstBounds.y());
    SkRect localDstBounds = SkRect::MakeWH(dstBounds.width(), dstBounds.height());
    SkRect localSrcBounds;
    SkRect srcRect;
    if (srcBounds) {
        srcRect = localSrcBounds = *srcBounds;
        srcRect.offset(srcOffset);
        srcBounds = &localSrcBounds;
    } else {
        srcRect = localDstBounds;
    }

    scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
    srcRect.roundOut(&srcRect);
    scale_rect(&srcRect, static_cast<float>(scaleFactorX),
                         static_cast<float>(scaleFactorY));

    // setup new clip
    GrClip clip(localDstBounds);

    SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
             kRGBA_8888_GrPixelConfig == srcTexture->config() ||
             kAlpha_8_GrPixelConfig == srcTexture->config());

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = SkScalarFloorToInt(dstBounds.width());
    desc.fHeight = SkScalarFloorToInt(dstBounds.height());
    desc.fConfig = srcTexture->config();

    GrTexture* dstTexture;
    GrTexture* tempTexture;
    SkAutoTUnref<GrTexture> temp1, temp2;

    temp1.reset(context->textureProvider()->createTexture(desc, constraint));
    dstTexture = temp1.get();
    if (canClobberSrc) {
        tempTexture = srcTexture;
    } else {
        temp2.reset(context->textureProvider()->createTexture(desc, constraint));
        tempTexture = temp2.get();
    }

    if (nullptr == dstTexture || nullptr == tempTexture) {
        return nullptr;
    }

    SkAutoTUnref<GrDrawContext> srcDrawContext;

    for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
        GrPaint paint;
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());
        SkRect dstRect(srcRect);
        if (srcBounds && i == 1) {
            SkRect domain;
            matrix.mapRect(&domain, *srcBounds);
            domain.inset((i < scaleFactorX) ? SK_ScalarHalf / srcTexture->width() : 0.0f,
                         (i < scaleFactorY) ? SK_ScalarHalf / srcTexture->height() : 0.0f);
            SkAutoTUnref<const GrFragmentProcessor> fp(GrTextureDomainEffect::Create(
                srcTexture,
                matrix,
                domain,
                GrTextureDomain::kDecal_Mode,
                GrTextureParams::kBilerp_FilterMode));
            paint.addColorFragmentProcessor(fp);
            srcRect.offset(-srcOffset);
            srcOffset.set(0, 0);
        } else {
            GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
            paint.addColorTextureProcessor(srcTexture, matrix, params);
        }
        paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);
        scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
                             i < scaleFactorY ? 0.5f : 1.0f);

        SkAutoTUnref<GrDrawContext> dstDrawContext(
                                             context->drawContext(dstTexture->asRenderTarget()));
        if (!dstDrawContext) {
            return nullptr;
        }
        dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(), dstRect, srcRect);

        srcDrawContext.swap(dstDrawContext);
        srcRect = dstRect;
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);
        localSrcBounds = srcRect;
    }

    // For really small blurs (certainly no wider than 5x5 on desktop gpus) it is faster to just
    // launch a single non separable kernel vs two launches
    srcRect = localDstBounds;
    if (sigmaX > 0.0f && sigmaY > 0.0f &&
            (2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) {
        // We shouldn't be scaling because this is a small size blur
        SkASSERT((1 == scaleFactorX) && (1 == scaleFactorY));

        SkAutoTUnref<GrDrawContext> dstDrawContext(
                                             context->drawContext(dstTexture->asRenderTarget()));
        if (!dstDrawContext) {
            return nullptr;
        }
        convolve_gaussian_2d(dstDrawContext, clip, srcRect, srcOffset,
                             srcTexture, radiusX, radiusY, sigmaX, sigmaY, srcBounds);

        srcDrawContext.swap(dstDrawContext);
        srcRect.offsetTo(0, 0);
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);

    } else {
        scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
        srcRect.roundOut(&srcRect);
        const SkIRect srcIRect = srcRect.roundOut();
        if (sigmaX > 0.0f) {
            if (scaleFactorX > 1) {
                // TODO: if we pass in the source draw context we don't need this here
                if (!srcDrawContext) {
                    srcDrawContext.reset(context->drawContext(srcTexture->asRenderTarget()));
                    if (!srcDrawContext) {
                        return nullptr;
                    }        
                }

                // Clear out a radius to the right of the srcRect to prevent the
                // X convolution from reading garbage.
                clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                              radiusX, srcIRect.height());
                srcDrawContext->clear(&clearRect, 0x0, false);
            }

            SkAutoTUnref<GrDrawContext> dstDrawContext(
                                             context->drawContext(dstTexture->asRenderTarget()));
            if (!dstDrawContext) {
                return nullptr;
            }
            convolve_gaussian(dstDrawContext, clip, srcRect,
                              srcTexture, Gr1DKernelEffect::kX_Direction, radiusX, sigmaX,
                              srcBounds, srcOffset);
            srcDrawContext.swap(dstDrawContext);
            srcTexture = dstTexture;
            srcRect.offsetTo(0, 0);
            SkTSwap(dstTexture, tempTexture);
            localSrcBounds = srcRect;
            srcOffset.set(0, 0);
        }

        if (sigmaY > 0.0f) {
            if (scaleFactorY > 1 || sigmaX > 0.0f) {
                // TODO: if we pass in the source draw context we don't need this here
                if (!srcDrawContext) {
                    srcDrawContext.reset(context->drawContext(srcTexture->asRenderTarget()));
                    if (!srcDrawContext) {
                        return nullptr;
                    }        
                }

                // Clear out a radius below the srcRect to prevent the Y
                // convolution from reading garbage.
                clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
                                              srcIRect.width(), radiusY);
                srcDrawContext->clear(&clearRect, 0x0, false);
            }

            SkAutoTUnref<GrDrawContext> dstDrawContext(
                                               context->drawContext(dstTexture->asRenderTarget()));
            if (!dstDrawContext) {
                return nullptr;
            }
            convolve_gaussian(dstDrawContext, clip, srcRect,
                              srcTexture, Gr1DKernelEffect::kY_Direction, radiusY, sigmaY,
                              srcBounds, srcOffset);

            srcDrawContext.swap(dstDrawContext);
            srcTexture = dstTexture;
            srcRect.offsetTo(0, 0);
            SkTSwap(dstTexture, tempTexture);
        }
    }
    const SkIRect srcIRect = srcRect.roundOut();

    if (scaleFactorX > 1 || scaleFactorY > 1) {
        SkASSERT(srcDrawContext);

        // Clear one pixel to the right and below, to accommodate bilinear
        // upsampling.
        clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
                                      srcIRect.width() + 1, 1);
        srcDrawContext->clear(&clearRect, 0x0, false);
        clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                      1, srcIRect.height());
        srcDrawContext->clear(&clearRect, 0x0, false);
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());

        GrPaint paint;
        // FIXME:  this should be mitchell, not bilinear.
        GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
        paint.addColorTextureProcessor(srcTexture, matrix, params);
        paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

        SkRect dstRect(srcRect);
        scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);

        SkAutoTUnref<GrDrawContext> dstDrawContext(
                                context->drawContext(dstTexture->asRenderTarget()));
        if (!dstDrawContext) {
            return nullptr;
        }
        dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(), dstRect, srcRect);

        srcDrawContext.swap(dstDrawContext);
        srcRect = dstRect;
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);
    }

    return SkRef(srcTexture);
}
Ejemplo n.º 15
0
GrTexture* GaussianBlur(GrContext* context,
                        GrTexture* srcTexture,
                        bool canClobberSrc,
                        const SkRect& rect,
                        bool cropToRect,
                        float sigmaX,
                        float sigmaY) {
    SkASSERT(context);

    SkIRect clearRect;
    int scaleFactorX, radiusX;
    int scaleFactorY, radiusY;
    int maxTextureSize = context->caps()->maxTextureSize();
    sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX);
    sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY);

    SkRect srcRect(rect);
    scale_rect(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
    srcRect.roundOut(&srcRect);
    scale_rect(&srcRect, static_cast<float>(scaleFactorX),
                         static_cast<float>(scaleFactorY));

    // setup new clip
    GrClip clip(SkRect::MakeWH(srcRect.width(), srcRect.height()));

    SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
             kRGBA_8888_GrPixelConfig == srcTexture->config() ||
             kAlpha_8_GrPixelConfig == srcTexture->config());

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = SkScalarFloorToInt(srcRect.width());
    desc.fHeight = SkScalarFloorToInt(srcRect.height());
    desc.fConfig = srcTexture->config();

    GrTexture* dstTexture;
    GrTexture* tempTexture;
    SkAutoTUnref<GrTexture> temp1, temp2;

    temp1.reset(context->textureProvider()->refScratchTexture(
        desc, GrTextureProvider::kApprox_ScratchTexMatch));
    dstTexture = temp1.get();
    if (canClobberSrc) {
        tempTexture = srcTexture;
    } else {
        temp2.reset(context->textureProvider()->refScratchTexture(
            desc, GrTextureProvider::kApprox_ScratchTexMatch));
        tempTexture = temp2.get();
    }

    if (NULL == dstTexture || NULL == tempTexture) {
        return NULL;
    }

    GrDrawContext* drawContext = context->drawContext();
    if (!drawContext) {
        return NULL;
    }

    for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
        GrPaint paint;
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());
        SkRect dstRect(srcRect);
        if (cropToRect && i == 1) {
            dstRect.offset(-dstRect.fLeft, -dstRect.fTop);
            SkRect domain;
            matrix.mapRect(&domain, rect);
            domain.inset(i < scaleFactorX ? SK_ScalarHalf / srcTexture->width() : 0.0f,
                         i < scaleFactorY ? SK_ScalarHalf / srcTexture->height() : 0.0f);
            SkAutoTUnref<GrFragmentProcessor> fp(   GrTextureDomainEffect::Create(
                paint.getProcessorDataManager(),
                srcTexture,
                matrix,
                domain,
                GrTextureDomain::kDecal_Mode,
                GrTextureParams::kBilerp_FilterMode));
            paint.addColorProcessor(fp);
        } else {
            GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
            paint.addColorTextureProcessor(srcTexture, matrix, params);
        }
        scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
                             i < scaleFactorY ? 0.5f : 1.0f);
        drawContext->drawNonAARectToRect(dstTexture->asRenderTarget(), clip, paint, SkMatrix::I(),
                                         dstRect, srcRect);
        srcRect = dstRect;
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);
    }

    const SkIRect srcIRect = srcRect.roundOut();

    // For really small blurs(Certainly no wider than 5x5 on desktop gpus) it is faster to just
    // launch a single non separable kernel vs two launches
    if (sigmaX > 0.0f && sigmaY > 0 &&
            (2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) {
        // We shouldn't be scaling because this is a small size blur
        SkASSERT((scaleFactorX == scaleFactorY) == 1);
        SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
        convolve_gaussian_2d(drawContext, dstTexture->asRenderTarget(), clip, srcRect, dstRect,
                             srcTexture, radiusX, radiusY, sigmaX, sigmaY, cropToRect, srcIRect);
        srcTexture = dstTexture;
        srcRect = dstRect;
        SkTSwap(dstTexture, tempTexture);

    } else {
        if (sigmaX > 0.0f) {
            if (scaleFactorX > 1) {
                // Clear out a radius to the right of the srcRect to prevent the
                // X convolution from reading garbage.
                clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                              radiusX, srcIRect.height());
                drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
            }
            SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
            convolve_gaussian(drawContext, dstTexture->asRenderTarget(), clip, srcRect, dstRect,
                              srcTexture, Gr1DKernelEffect::kX_Direction, radiusX, sigmaX,
                              cropToRect);
            srcTexture = dstTexture;
            srcRect = dstRect;
            SkTSwap(dstTexture, tempTexture);
        }

        if (sigmaY > 0.0f) {
            if (scaleFactorY > 1 || sigmaX > 0.0f) {
                // Clear out a radius below the srcRect to prevent the Y
                // convolution from reading garbage.
                clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
                                              srcIRect.width(), radiusY);
                drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
            }

            SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
            convolve_gaussian(drawContext, dstTexture->asRenderTarget(), clip, srcRect,
                              dstRect, srcTexture, Gr1DKernelEffect::kY_Direction, radiusY, sigmaY,
                              cropToRect);
            srcTexture = dstTexture;
            srcRect = dstRect;
            SkTSwap(dstTexture, tempTexture);
        }
    }

    if (scaleFactorX > 1 || scaleFactorY > 1) {
        // Clear one pixel to the right and below, to accommodate bilinear
        // upsampling.
        clearRect = SkIRect::MakeXYWH(srcIRect.fLeft, srcIRect.fBottom,
                                      srcIRect.width() + 1, 1);
        drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
        clearRect = SkIRect::MakeXYWH(srcIRect.fRight, srcIRect.fTop,
                                      1, srcIRect.height());
        drawContext->clear(srcTexture->asRenderTarget(), &clearRect, 0x0, false);
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());

        GrPaint paint;
        // FIXME:  this should be mitchell, not bilinear.
        GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
        paint.addColorTextureProcessor(srcTexture, matrix, params);

        SkRect dstRect(srcRect);
        scale_rect(&dstRect, (float) scaleFactorX, (float) scaleFactorY);
        drawContext->drawNonAARectToRect(dstTexture->asRenderTarget(), clip, paint,
                                         SkMatrix::I(), dstRect, srcRect);
        srcRect = dstRect;
        srcTexture = dstTexture;
        SkTSwap(dstTexture, tempTexture);
    }
    return SkRef(srcTexture);
}
Ejemplo n.º 16
0
bool SkXfermodeImageFilter::filterImageGPUDeprecated(Proxy* proxy,
                                                     const SkBitmap& src,
                                                     const Context& ctx,
                                                     SkBitmap* result,
                                                     SkIPoint* offset) const {
    GrContext* context = nullptr;
    SkBitmap background = src;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPUDeprecated(0, proxy, src, ctx, &background, &backgroundOffset)) {
        background.reset();
    }
    GrTexture* backgroundTex = background.getTexture();
    if (backgroundTex) {
        context = backgroundTex->getContext();
    }

    SkBitmap foreground = src;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPUDeprecated(1, proxy, src, ctx, &foreground, &foregroundOffset)) {
        foreground.reset();
    }
    GrTexture* foregroundTex = foreground.getTexture();
    if (foregroundTex) {
        context = foregroundTex->getContext();
    }

    if (!context) {
        return false;
    }

    SkIRect bounds = background.bounds().makeOffset(backgroundOffset.x(), backgroundOffset.y());
    bounds.join(foreground.bounds().makeOffset(foregroundOffset.x(), foregroundOffset.y()));
    if (bounds.isEmpty()) {
        return false;
    }

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = bounds.width();
    desc.fHeight = bounds.height();
    desc.fConfig = kSkia8888_GrPixelConfig;
    SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
    if (!dst) {
        return false;
    }

    GrPaint paint;
    SkAutoTUnref<const GrFragmentProcessor> bgFP;

    if (backgroundTex) {
        SkMatrix backgroundMatrix;
        backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
        backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
                                      SkIntToScalar(-backgroundOffset.fY));
        bgFP.reset(GrTextureDomainEffect::Create(
                            backgroundTex, backgroundMatrix,
                            GrTextureDomain::MakeTexelDomain(backgroundTex, background.bounds()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode));
    } else {
        bgFP.reset(GrConstColorProcessor::Create(GrColor_TRANSPARENT_BLACK,
                                                 GrConstColorProcessor::kIgnore_InputMode));
    }

    if (foregroundTex) {
        SkMatrix foregroundMatrix;
        foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
        foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
                                      SkIntToScalar(-foregroundOffset.fY));

        SkAutoTUnref<const GrFragmentProcessor> foregroundFP;

        foregroundFP.reset(GrTextureDomainEffect::Create(
                            foregroundTex, foregroundMatrix,
                            GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode));

        paint.addColorFragmentProcessor(foregroundFP.get());

        // A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
        SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
        if (!mode) {
            // It would be awesome to use SkXfermode::Create here but it knows better
            // than us and won't return a kSrcOver_Mode SkXfermode. That means we
            // have to get one the hard way.
            struct ProcCoeff rec;
            rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
            SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);

            mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
        }

        SkAutoTUnref<const GrFragmentProcessor> xferFP(mode->getFragmentProcessorForImageFilter(bgFP));

        // A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
        if (xferFP) {
            paint.addColorFragmentProcessor(xferFP);
        }
    } else {
        paint.addColorFragmentProcessor(bgFP);
    }

    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
    if (!drawContext) {
        return false;
    }

    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));

    offset->fX = bounds.left();
    offset->fY = bounds.top();
    GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
    return true;
}
Ejemplo n.º 17
0
sk_sp<GrDrawContext> GaussianBlur(GrContext* context,
                                  GrTexture* origSrc,
                                  sk_sp<SkColorSpace> colorSpace,
                                  const SkIRect& dstBounds,
                                  const SkIRect* srcBounds,
                                  float sigmaX,
                                  float sigmaY,
                                  SkBackingFit fit) {
    SkASSERT(context);
    SkIRect clearRect;
    int scaleFactorX, radiusX;
    int scaleFactorY, radiusY;
    int maxTextureSize = context->caps()->maxTextureSize();
    sigmaX = adjust_sigma(sigmaX, maxTextureSize, &scaleFactorX, &radiusX);
    sigmaY = adjust_sigma(sigmaY, maxTextureSize, &scaleFactorY, &radiusY);
    SkASSERT(sigmaX || sigmaY);

    SkIPoint srcOffset = SkIPoint::Make(-dstBounds.x(), -dstBounds.y());
    SkIRect localDstBounds = SkIRect::MakeWH(dstBounds.width(), dstBounds.height());
    SkIRect localSrcBounds;
    SkIRect srcRect;
    if (srcBounds) {
        srcRect = localSrcBounds = *srcBounds;
        srcRect.offset(srcOffset);
        srcBounds = &localSrcBounds;
    } else {
        srcRect = localDstBounds;
    }

    scale_irect_roundout(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
    scale_irect(&srcRect, scaleFactorX, scaleFactorY);

    // setup new clip
    GrFixedClip clip(localDstBounds);

    sk_sp<GrTexture> srcTexture(sk_ref_sp(origSrc));

    SkASSERT(kBGRA_8888_GrPixelConfig == srcTexture->config() ||
             kRGBA_8888_GrPixelConfig == srcTexture->config() ||
             kSRGBA_8888_GrPixelConfig == srcTexture->config() ||
             kSBGRA_8888_GrPixelConfig == srcTexture->config() ||
             kRGBA_half_GrPixelConfig == srcTexture->config() ||
             kAlpha_8_GrPixelConfig == srcTexture->config());

    const int width = dstBounds.width();
    const int height = dstBounds.height();
    const GrPixelConfig config = srcTexture->config();

    sk_sp<GrDrawContext> dstDrawContext(context->makeDrawContext(fit,
                                                                 width, height, config, colorSpace,
                                                                 0, kDefault_GrSurfaceOrigin));
    if (!dstDrawContext) {
        return nullptr;
    }

    // For really small blurs (certainly no wider than 5x5 on desktop gpus) it is faster to just
    // launch a single non separable kernel vs two launches
    if (sigmaX > 0.0f && sigmaY > 0.0f &&
            (2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) {
        // We shouldn't be scaling because this is a small size blur
        SkASSERT((1 == scaleFactorX) && (1 == scaleFactorY));

        convolve_gaussian_2d(dstDrawContext.get(), clip, localDstBounds, srcOffset,
                             srcTexture.get(), radiusX, radiusY, sigmaX, sigmaY, srcBounds);

        return dstDrawContext;
    } 

    sk_sp<GrDrawContext> tmpDrawContext(context->makeDrawContext(fit,
                                                                 width, height, config, colorSpace,
                                                                 0, kDefault_GrSurfaceOrigin));
    if (!tmpDrawContext) {
        return nullptr;
    }

    sk_sp<GrDrawContext> srcDrawContext;

    SkASSERT(SkIsPow2(scaleFactorX) && SkIsPow2(scaleFactorY));

    for (int i = 1; i < scaleFactorX || i < scaleFactorY; i *= 2) {
        GrPaint paint;
        paint.setGammaCorrect(dstDrawContext->isGammaCorrect());
        SkMatrix matrix;
        matrix.setIDiv(srcTexture->width(), srcTexture->height());
        SkIRect dstRect(srcRect);
        if (srcBounds && i == 1) {
            SkRect domain;
            matrix.mapRect(&domain, SkRect::Make(*srcBounds));
            domain.inset((i < scaleFactorX) ? SK_ScalarHalf / srcTexture->width() : 0.0f,
                         (i < scaleFactorY) ? SK_ScalarHalf / srcTexture->height() : 0.0f);
            sk_sp<GrFragmentProcessor> fp(GrTextureDomainEffect::Make(
                                                        srcTexture.get(),
                                                        nullptr,
                                                        matrix,
                                                        domain,
                                                        GrTextureDomain::kDecal_Mode,
                                                        GrTextureParams::kBilerp_FilterMode));
            paint.addColorFragmentProcessor(std::move(fp));
            srcRect.offset(-srcOffset);
            srcOffset.set(0, 0);
        } else {
            GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
            paint.addColorTextureProcessor(srcTexture.get(), nullptr, matrix, params);
        }
        paint.setPorterDuffXPFactory(SkBlendMode::kSrc);
        shrink_irect_by_2(&dstRect, i < scaleFactorX, i < scaleFactorY);

        dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(),
                                       SkRect::Make(dstRect), SkRect::Make(srcRect));

        srcDrawContext = dstDrawContext;
        srcRect = dstRect;
        srcTexture = srcDrawContext->asTexture();
        dstDrawContext.swap(tmpDrawContext);
        localSrcBounds = srcRect;
    }

    srcRect = localDstBounds;
    scale_irect_roundout(&srcRect, 1.0f / scaleFactorX, 1.0f / scaleFactorY);
    if (sigmaX > 0.0f) {
        if (scaleFactorX > 1) {
            SkASSERT(srcDrawContext);

            // Clear out a radius to the right of the srcRect to prevent the
            // X convolution from reading garbage.
            clearRect = SkIRect::MakeXYWH(srcRect.fRight, srcRect.fTop,
                                          radiusX, srcRect.height());
            srcDrawContext->clear(&clearRect, 0x0, false);
        }

        convolve_gaussian(dstDrawContext.get(), clip, srcRect,
                          srcTexture.get(), Gr1DKernelEffect::kX_Direction, radiusX, sigmaX,
                          srcBounds, srcOffset);
        srcDrawContext = dstDrawContext;
        srcTexture = srcDrawContext->asTexture();
        srcRect.offsetTo(0, 0);
        dstDrawContext.swap(tmpDrawContext);
        localSrcBounds = srcRect;
        srcOffset.set(0, 0);
    }

    if (sigmaY > 0.0f) {
        if (scaleFactorY > 1 || sigmaX > 0.0f) {
            SkASSERT(srcDrawContext);

            // Clear out a radius below the srcRect to prevent the Y
            // convolution from reading garbage.
            clearRect = SkIRect::MakeXYWH(srcRect.fLeft, srcRect.fBottom,
                                          srcRect.width(), radiusY);
            srcDrawContext->clear(&clearRect, 0x0, false);
        }

        convolve_gaussian(dstDrawContext.get(), clip, srcRect,
                          srcTexture.get(), Gr1DKernelEffect::kY_Direction, radiusY, sigmaY,
                          srcBounds, srcOffset);

        srcDrawContext = dstDrawContext;
        srcRect.offsetTo(0, 0);
        dstDrawContext.swap(tmpDrawContext);
    }

    SkASSERT(srcDrawContext);
    srcTexture = nullptr;     // we don't use this from here on out

    if (scaleFactorX > 1 || scaleFactorY > 1) {
        // Clear one pixel to the right and below, to accommodate bilinear upsampling.
        clearRect = SkIRect::MakeXYWH(srcRect.fLeft, srcRect.fBottom, srcRect.width() + 1, 1);
        srcDrawContext->clear(&clearRect, 0x0, false);
        clearRect = SkIRect::MakeXYWH(srcRect.fRight, srcRect.fTop, 1, srcRect.height());
        srcDrawContext->clear(&clearRect, 0x0, false);

        SkMatrix matrix;
        matrix.setIDiv(srcDrawContext->width(), srcDrawContext->height());

        GrPaint paint;
        paint.setGammaCorrect(dstDrawContext->isGammaCorrect());
        // FIXME:  this should be mitchell, not bilinear.
        GrTextureParams params(SkShader::kClamp_TileMode, GrTextureParams::kBilerp_FilterMode);
        sk_sp<GrTexture> tex(srcDrawContext->asTexture());
        paint.addColorTextureProcessor(tex.get(), nullptr, matrix, params);
        paint.setPorterDuffXPFactory(SkBlendMode::kSrc);

        SkIRect dstRect(srcRect);
        scale_irect(&dstRect, scaleFactorX, scaleFactorY);

        dstDrawContext->fillRectToRect(clip, paint, SkMatrix::I(),
                                       SkRect::Make(dstRect), SkRect::Make(srcRect));

        srcDrawContext = dstDrawContext;
        srcRect = dstRect;
        dstDrawContext.swap(tmpDrawContext);
    }

    return srcDrawContext;
}
Ejemplo n.º 18
0
GrEffectRef* SkBitmapProcShader::asNewEffect(GrContext* context, const SkPaint& paint) const {
    SkMatrix matrix;
    matrix.setIDiv(fRawBitmap.width(), fRawBitmap.height());

    if (this->hasLocalMatrix()) {
        SkMatrix inverse;
        if (!this->getLocalMatrix().invert(&inverse)) {
            return NULL;
        }
        matrix.preConcat(inverse);
    }
    SkShader::TileMode tm[] = {
        (TileMode)fState.fTileModeX,
        (TileMode)fState.fTileModeY,
    };

    // Must set wrap and filter on the sampler before requesting a texture.
    SkPaint::FilterLevel paintFilterLevel = paint.getFilterLevel();
    GrTextureParams::FilterMode textureFilterMode;
    switch(paintFilterLevel) {
        case SkPaint::kNone_FilterLevel:
            textureFilterMode = GrTextureParams::kNone_FilterMode;
            break;
        case SkPaint::kLow_FilterLevel:
            textureFilterMode = GrTextureParams::kBilerp_FilterMode;
            break;
        case SkPaint::kMedium_FilterLevel:
            textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            break;
        case SkPaint::kHigh_FilterLevel:
            // fall back to no filtering here; we will install another
            // shader that will do the HQ filtering.
            textureFilterMode = GrTextureParams::kNone_FilterMode;
            break;
        default:
            SkErrorInternals::SetError( kInvalidPaint_SkError,
                                        "Sorry, I don't understand the filtering "
                                        "mode you asked for.  Falling back to "
                                        "MIPMaps.");
            textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            break;

    }
    GrTextureParams params(tm, textureFilterMode);
    GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fRawBitmap, &params);

    if (NULL == texture) {
        SkErrorInternals::SetError( kInternalError_SkError,
                                    "Couldn't convert bitmap to texture.");
        return NULL;
    }

    GrEffectRef* effect = NULL;
    if (paintFilterLevel == SkPaint::kHigh_FilterLevel) {
        effect = GrBicubicEffect::Create(texture, matrix, params);
    } else {
        effect = GrSimpleTextureEffect::Create(texture, matrix, params);
    }
    GrUnlockAndUnrefCachedBitmapTexture(texture);
    return effect;
}
bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy,
                                           const SkBitmap& src,
                                           const Context& ctx,
                                           SkBitmap* result,
                                           SkIPoint* offset) const {
    SkBitmap background = src;
    SkIPoint backgroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPU(0, proxy, src, ctx, &background, &backgroundOffset)) {
        return false;
    }

    GrTexture* backgroundTex = background.getTexture();
    if (nullptr == backgroundTex) {
        SkASSERT(false);
        return false;
    }

    SkBitmap foreground = src;
    SkIPoint foregroundOffset = SkIPoint::Make(0, 0);
    if (!this->filterInputGPU(1, proxy, src, ctx, &foreground, &foregroundOffset)) {
        return false;
    }
    GrTexture* foregroundTex = foreground.getTexture();
    GrContext* context = foregroundTex->getContext();
    SkIRect bounds = background.bounds().makeOffset(backgroundOffset.x(), backgroundOffset.y());
    bounds.join(foreground.bounds().makeOffset(foregroundOffset.x(), foregroundOffset.y()));
    if (bounds.isEmpty()) {
        return false;
    }

    const GrFragmentProcessor* xferFP = nullptr;

    GrSurfaceDesc desc;
    desc.fFlags = kRenderTarget_GrSurfaceFlag;
    desc.fWidth = bounds.width();
    desc.fHeight = bounds.height();
    desc.fConfig = kSkia8888_GrPixelConfig;
    SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc));
    if (!dst) {
        return false;
    }

    GrPaint paint;
    SkMatrix backgroundMatrix;
    backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
    backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
                                  SkIntToScalar(-backgroundOffset.fY));
    SkAutoTUnref<const GrFragmentProcessor> bgFP(GrTextureDomainEffect::Create(
        backgroundTex, backgroundMatrix,
        GrTextureDomain::MakeTexelDomain(backgroundTex, background.bounds()),
        GrTextureDomain::kDecal_Mode,
        GrTextureParams::kNone_FilterMode)
    );
    if (!fMode || !fMode->asFragmentProcessor(&xferFP, bgFP)) {
        // canFilterImageGPU() should've taken care of this
        SkASSERT(false);
        return false;
    }

    SkMatrix foregroundMatrix;
    foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
    foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
                                  SkIntToScalar(-foregroundOffset.fY));


    SkAutoTUnref<const GrFragmentProcessor> foregroundFP(GrTextureDomainEffect::Create(
        foregroundTex, foregroundMatrix,
        GrTextureDomain::MakeTexelDomain(foregroundTex, foreground.bounds()),
        GrTextureDomain::kDecal_Mode,
        GrTextureParams::kNone_FilterMode)
    );

    paint.addColorFragmentProcessor(foregroundFP.get());
    if (xferFP) {
        paint.addColorFragmentProcessor(xferFP)->unref();
    }
    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget()));
    if (!drawContext) {
        return false;
    }

    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    drawContext->drawRect(GrClip::WideOpen(), paint, matrix, SkRect::Make(bounds));

    offset->fX = bounds.left();
    offset->fY = bounds.top();
    GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result);
    return true;
}
Ejemplo n.º 20
0
GrEffectRef* SkBitmapProcShader::asNewEffect(GrContext* context, const SkPaint& paint) const {
    SkMatrix matrix;
    matrix.setIDiv(fRawBitmap.width(), fRawBitmap.height());

    SkMatrix inverse;
    if (!this->getLocalMatrix().invert(&inverse)) {
        return NULL;
    }
    matrix.preConcat(inverse);

    SkShader::TileMode tm[] = {
        (TileMode)fState.fTileModeX,
        (TileMode)fState.fTileModeY,
    };

    // Must set wrap and filter on the sampler before requesting a texture.
    SkPaint::FilterLevel paintFilterLevel = paint.getFilterLevel();
    GrTextureParams::FilterMode textureFilterMode;
    switch(paintFilterLevel) {
        case SkPaint::kNone_FilterLevel:
            textureFilterMode = GrTextureParams::kNone_FilterMode;
            break;
        case SkPaint::kLow_FilterLevel:
            textureFilterMode = GrTextureParams::kBilerp_FilterMode;
            break;
        case SkPaint::kMedium_FilterLevel:
            textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            break;
        case SkPaint::kHigh_FilterLevel:
            // Minification can look bad with the bicubic effect. This is an overly aggressive
            // check for MIP fallbacks. It doesn't consider the fact that minification in the local
            // matrix could be offset by the view matrix and vice versa. We also don't know whether
            // the draw has explicit local coords (e.g. drawVertices) where the scale factor is
            // unknown and varies.
            if (context->getMatrix().getMinStretch() >= SK_Scalar1 &&
                this->getLocalMatrix().getMaxStretch() <= SK_Scalar1) {
                // fall back to no filtering here; we will install another
                // shader that will do the HQ filtering.
                textureFilterMode = GrTextureParams::kNone_FilterMode;
            } else {
                // Fall back to mip-mapping.
                paintFilterLevel = SkPaint::kMedium_FilterLevel;
                textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            }
            break;
        default:
            SkErrorInternals::SetError( kInvalidPaint_SkError,
                                        "Sorry, I don't understand the filtering "
                                        "mode you asked for.  Falling back to "
                                        "MIPMaps.");
            textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            break;

    }
    GrTextureParams params(tm, textureFilterMode);
    GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fRawBitmap, &params);

    if (NULL == texture) {
        SkErrorInternals::SetError( kInternalError_SkError,
                                    "Couldn't convert bitmap to texture.");
        return NULL;
    }

    GrEffectRef* effect = NULL;
    if (paintFilterLevel == SkPaint::kHigh_FilterLevel) {
        effect = GrBicubicEffect::Create(texture, matrix, tm);
    } else {
        effect = GrSimpleTextureEffect::Create(texture, matrix, params);
    }
    GrUnlockAndUnrefCachedBitmapTexture(texture);
    return effect;
}
Ejemplo n.º 21
0
sk_sp<SkSpecialImage> SkXfermodeImageFilter::filterImageGPU(SkSpecialImage* source,
                                                            sk_sp<SkSpecialImage> background,
                                                            const SkIPoint& backgroundOffset,
                                                            sk_sp<SkSpecialImage> foreground,
                                                            const SkIPoint& foregroundOffset,
                                                            const SkIRect& bounds) const {
    SkASSERT(source->isTextureBacked());

    GrContext* context = source->getContext();

    sk_sp<GrTexture> backgroundTex, foregroundTex;
    
    if (background) {
        backgroundTex = background->asTextureRef(context);
    }

    if (foreground) {
        foregroundTex = foreground->asTextureRef(context);
    }

    GrPaint paint;
    // SRGBTODO: AllowSRGBInputs?
    sk_sp<GrFragmentProcessor> bgFP;

    if (backgroundTex) {
        SkMatrix backgroundMatrix;
        backgroundMatrix.setIDiv(backgroundTex->width(), backgroundTex->height());
        backgroundMatrix.preTranslate(SkIntToScalar(-backgroundOffset.fX),
                                      SkIntToScalar(-backgroundOffset.fY));
        bgFP = GrTextureDomainEffect::Make(
                            backgroundTex.get(), nullptr, backgroundMatrix,
                            GrTextureDomain::MakeTexelDomain(backgroundTex.get(),
                                                             background->subset()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode);
    } else {
        bgFP = GrConstColorProcessor::Make(GrColor_TRANSPARENT_BLACK,
                                             GrConstColorProcessor::kIgnore_InputMode);
    }

    if (foregroundTex) {
        SkMatrix foregroundMatrix;
        foregroundMatrix.setIDiv(foregroundTex->width(), foregroundTex->height());
        foregroundMatrix.preTranslate(SkIntToScalar(-foregroundOffset.fX),
                                      SkIntToScalar(-foregroundOffset.fY));

        sk_sp<GrFragmentProcessor> foregroundFP;

        foregroundFP = GrTextureDomainEffect::Make(
                            foregroundTex.get(), nullptr, foregroundMatrix,
                            GrTextureDomain::MakeTexelDomain(foregroundTex.get(), 
                                                             foreground->subset()),
                            GrTextureDomain::kDecal_Mode,
                            GrTextureParams::kNone_FilterMode);

        paint.addColorFragmentProcessor(std::move(foregroundFP));

        // A null fMode is interpreted to mean kSrcOver_Mode (to match raster).
        SkAutoTUnref<SkXfermode> mode(SkSafeRef(fMode.get()));
        if (!mode) {
            // It would be awesome to use SkXfermode::Create here but it knows better
            // than us and won't return a kSrcOver_Mode SkXfermode. That means we
            // have to get one the hard way.
            struct ProcCoeff rec;
            rec.fProc = SkXfermode::GetProc(SkXfermode::kSrcOver_Mode);
            SkXfermode::ModeAsCoeff(SkXfermode::kSrcOver_Mode, &rec.fSC, &rec.fDC);

            mode.reset(new SkProcCoeffXfermode(rec, SkXfermode::kSrcOver_Mode));
        }

        sk_sp<GrFragmentProcessor> xferFP(
            mode->makeFragmentProcessorForImageFilter(std::move(bgFP)));

        // A null 'xferFP' here means kSrc_Mode was used in which case we can just proceed
        if (xferFP) {
            paint.addColorFragmentProcessor(std::move(xferFP));
        }
    } else {
        paint.addColorFragmentProcessor(std::move(bgFP));
    }

    paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode);

    sk_sp<GrDrawContext> drawContext(context->makeDrawContext(SkBackingFit::kApprox,
                                                              bounds.width(), bounds.height(),
                                                              kSkia8888_GrPixelConfig,
                                                              sk_ref_sp(source->getColorSpace())));
    if (!drawContext) {
        return nullptr;
    }

    SkMatrix matrix;
    matrix.setTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top()));
    drawContext->drawRect(GrNoClip(), paint, matrix, SkRect::Make(bounds));

    return SkSpecialImage::MakeFromGpu(SkIRect::MakeWH(bounds.width(), bounds.height()),
                                       kNeedNewImageUniqueID_SpecialImage,
                                       drawContext->asTexture(),
                                       sk_ref_sp(drawContext->getColorSpace()));
}
Ejemplo n.º 22
0
bool LightingShader::asFragmentProcessor(GrContext* context, const SkPaint& paint, 
                                         const SkMatrix& viewM, const SkMatrix* localMatrix, 
                                         GrColor* color, GrProcessorDataManager*,
                                         GrFragmentProcessor** fp) const {
    // we assume diffuse and normal maps have same width and height
    // TODO: support different sizes
    SkASSERT(fDiffuseMap.width() == fNormalMap.width() &&
             fDiffuseMap.height() == fNormalMap.height());
    SkMatrix matrix;
    matrix.setIDiv(fDiffuseMap.width(), fDiffuseMap.height());

    SkMatrix lmInverse;
    if (!this->getLocalMatrix().invert(&lmInverse)) {
        return false;
    }
    if (localMatrix) {
        SkMatrix inv;
        if (!localMatrix->invert(&inv)) {
            return false;
        }
        lmInverse.postConcat(inv);
    }
    matrix.preConcat(lmInverse);

    // Must set wrap and filter on the sampler before requesting a texture. In two places below
    // we check the matrix scale factors to determine how to interpret the filter quality setting.
    // This completely ignores the complexity of the drawVertices case where explicit local coords
    // are provided by the caller.
    GrTextureParams::FilterMode textureFilterMode = GrTextureParams::kBilerp_FilterMode;
    switch (paint.getFilterQuality()) {
    case kNone_SkFilterQuality:
        textureFilterMode = GrTextureParams::kNone_FilterMode;
        break;
    case kLow_SkFilterQuality:
        textureFilterMode = GrTextureParams::kBilerp_FilterMode;
        break;
    case kMedium_SkFilterQuality:{                          
        SkMatrix matrix;
        matrix.setConcat(viewM, this->getLocalMatrix());
        if (matrix.getMinScale() < SK_Scalar1) {
            textureFilterMode = GrTextureParams::kMipMap_FilterMode;
        } else {
            // Don't trigger MIP level generation unnecessarily.
            textureFilterMode = GrTextureParams::kBilerp_FilterMode;
        }
        break;
    }
    case kHigh_SkFilterQuality:
    default:
        SkErrorInternals::SetError(kInvalidPaint_SkError,
            "Sorry, I don't understand the filtering "
            "mode you asked for.  Falling back to "
            "MIPMaps.");
        textureFilterMode = GrTextureParams::kMipMap_FilterMode;
        break;

    }

    // TODO: support other tile modes
    GrTextureParams params(kClamp_TileMode, textureFilterMode);
    SkAutoTUnref<GrTexture> diffuseTexture(GrRefCachedBitmapTexture(context, fDiffuseMap, &params));
    if (!diffuseTexture) {
        SkErrorInternals::SetError(kInternalError_SkError,
            "Couldn't convert bitmap to texture.");
        return false;
    }

    SkAutoTUnref<GrTexture> normalTexture(GrRefCachedBitmapTexture(context, fNormalMap, &params));
    if (!normalTexture) {
        SkErrorInternals::SetError(kInternalError_SkError,
            "Couldn't convert bitmap to texture.");
        return false;
    }

    GrColor lightColor = GrColorPackRGBA(SkColorGetR(fLight.fColor), SkColorGetG(fLight.fColor),
                                         SkColorGetB(fLight.fColor), SkColorGetA(fLight.fColor));
    GrColor ambientColor = GrColorPackRGBA(SkColorGetR(fAmbientColor), SkColorGetG(fAmbientColor),
                                           SkColorGetB(fAmbientColor), SkColorGetA(fAmbientColor));

    *fp = SkNEW_ARGS(LightingFP, (diffuseTexture, normalTexture, matrix,
                                  fLight.fDirection, lightColor, ambientColor));
    *color = GrColorPackA4(paint.getAlpha());
    return true;
}
Ejemplo n.º 23
0
bool SkBitmapProcShader::asNewEffect(GrContext* context, const SkPaint& paint,
                                     const SkMatrix* localMatrix, GrColor* grColor,
                                     GrEffectRef** grEffect) const {
    SkMatrix matrix;
    matrix.setIDiv(fRawBitmap.width(), fRawBitmap.height());

    SkMatrix lmInverse;
    if (!this->getLocalMatrix().invert(&lmInverse)) {
        return false;
    }
    if (localMatrix) {
        SkMatrix inv;
        if (!localMatrix->invert(&inv)) {
            return false;
        }
        lmInverse.postConcat(inv);
    }
    matrix.preConcat(lmInverse);

    SkShader::TileMode tm[] = {
        (TileMode)fTileModeX,
        (TileMode)fTileModeY,
    };

    // Must set wrap and filter on the sampler before requesting a texture. In two places below
    // we check the matrix scale factors to determine how to interpret the filter quality setting.
    // This completely ignores the complexity of the drawVertices case where explicit local coords
    // are provided by the caller.
    bool useBicubic = false;
    GrTextureParams::FilterMode textureFilterMode;
    switch(paint.getFilterLevel()) {
        case SkPaint::kNone_FilterLevel:
            textureFilterMode = GrTextureParams::kNone_FilterMode;
            break;
        case SkPaint::kLow_FilterLevel:
            textureFilterMode = GrTextureParams::kBilerp_FilterMode;
            break;
        case SkPaint::kMedium_FilterLevel: {
            SkMatrix matrix;
            matrix.setConcat(context->getMatrix(), this->getLocalMatrix());
            if (matrix.getMinScale() < SK_Scalar1) {
                textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            } else {
                // Don't trigger MIP level generation unnecessarily.
                textureFilterMode = GrTextureParams::kBilerp_FilterMode;
            }
            break;
        }
        case SkPaint::kHigh_FilterLevel: {
            SkMatrix matrix;
            matrix.setConcat(context->getMatrix(), this->getLocalMatrix());
            useBicubic = GrBicubicEffect::ShouldUseBicubic(matrix, &textureFilterMode);
            break;
        }
        default:
            SkErrorInternals::SetError( kInvalidPaint_SkError,
                                        "Sorry, I don't understand the filtering "
                                        "mode you asked for.  Falling back to "
                                        "MIPMaps.");
            textureFilterMode = GrTextureParams::kMipMap_FilterMode;
            break;

    }
    GrTextureParams params(tm, textureFilterMode);
    GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fRawBitmap, &params);

    if (NULL == texture) {
        SkErrorInternals::SetError( kInternalError_SkError,
                                    "Couldn't convert bitmap to texture.");
        return false;
    }
    
    *grColor = (kAlpha_8_SkColorType == fRawBitmap.colorType()) ? SkColor2GrColor(paint.getColor())
                                        : SkColor2GrColorJustAlpha(paint.getColor());

    if (useBicubic) {
        *grEffect = GrBicubicEffect::Create(texture, matrix, tm);
    } else {
        *grEffect = GrSimpleTextureEffect::Create(texture, matrix, params);
    }
    GrUnlockAndUnrefCachedBitmapTexture(texture);

    return true;
}