static sk_sp<SkSpecialImage> apply_morphology(
GrContext* context,
SkSpecialImage* input,
const SkIRect& rect,
GrMorphologyEffect::Type morphType,
SkISize radius,
const SkImageFilter::OutputProperties& outputProperties) {
sk_sp<GrTextureProxy> srcTexture(input->asTextureProxyRef(context));
SkASSERT(srcTexture);
sk_sp<SkColorSpace> colorSpace = sk_ref_sp(outputProperties.colorSpace());
GrPixelConfig config = SkColorType2GrPixelConfig(outputProperties.colorType());
// setup new clip
const GrFixedClip clip(SkIRect::MakeWH(srcTexture->width(), srcTexture->height()));
const SkIRect dstRect = SkIRect::MakeWH(rect.width(), rect.height());
SkIRect srcRect = rect;
SkASSERT(radius.width() > 0 || radius.height() > 0);
if (radius.fWidth > 0) {
sk_sp<GrRenderTargetContext> dstRTContext(
context->contextPriv().makeDeferredRenderTargetContext(
SkBackingFit::kApprox, rect.width(), rect.height(), config, colorSpace));
if (!dstRTContext) {
return nullptr;
}
apply_morphology_pass(dstRTContext.get(), clip, std::move(srcTexture), srcRect, dstRect,
radius.fWidth, morphType, GrMorphologyEffect::Direction::kX);
SkIRect clearRect = SkIRect::MakeXYWH(dstRect.fLeft, dstRect.fBottom,
dstRect.width(), radius.fHeight);
GrColor clearColor =
GrMorphologyEffect::Type::kErode == morphType ? SK_ColorWHITE : SK_ColorTRANSPARENT;
dstRTContext->clear(&clearRect, clearColor, GrRenderTargetContext::CanClearFullscreen::kNo);
srcTexture = dstRTContext->asTextureProxyRef();
srcRect = dstRect;
}
if (radius.fHeight > 0) {
sk_sp<GrRenderTargetContext> dstRTContext(
context->contextPriv().makeDeferredRenderTargetContext(
SkBackingFit::kApprox, rect.width(), rect.height(), config, colorSpace));
if (!dstRTContext) {
return nullptr;
}
apply_morphology_pass(dstRTContext.get(), clip, std::move(srcTexture), srcRect, dstRect,
radius.fHeight, morphType, GrMorphologyEffect::Direction::kY);
srcTexture = dstRTContext->asTextureProxyRef();
}
return SkSpecialImage::MakeDeferredFromGpu(context,
SkIRect::MakeWH(rect.width(), rect.height()),
kNeedNewImageUniqueID_SpecialImage,
std::move(srcTexture), std::move(colorSpace),
&input->props());
}
sk_sp<SkSpecialSurface> onMakeSurface(const SkImageFilter::OutputProperties& outProps,
const SkISize& size, SkAlphaType at,
const SkSurfaceProps* props) const override {
if (!fContext) {
return nullptr;
}
return SkSpecialSurface::MakeRenderTarget(
fContext, size.width(), size.height(),
SkColorType2GrPixelConfig(outProps.colorType()), sk_ref_sp(outProps.colorSpace()),
props);
}
sk_sp<SkSurface> onMakeTightSurface(const SkImageFilter::OutputProperties& outProps,
const SkISize& size, SkAlphaType at) const override {
SkColorSpace* colorSpace = outProps.colorSpace();
SkColorType colorType = colorSpace && colorSpace->gammaIsLinear()
? kRGBA_F16_SkColorType : kRGBA_8888_SkColorType;
SkImageInfo info = SkImageInfo::Make(size.width(), size.height(), colorType, at,
sk_ref_sp(colorSpace));
return SkSurface::MakeRenderTarget(fContext, SkBudgeted::kYes, info);
}
sk_sp<SkSpecialSurface> onMakeSurface(const SkImageFilter::OutputProperties& outProps,
const SkISize& size, SkAlphaType at) const override {
if (!fContext) {
return nullptr;
}
SkColorSpace* colorSpace = outProps.colorSpace();
return SkSpecialSurface::MakeRenderTarget(
fContext, size.width(), size.height(),
GrRenderableConfigForColorSpace(colorSpace), sk_ref_sp(colorSpace));
}
sk_sp<SkSurface> onMakeTightSurface(const SkImageFilter::OutputProperties& outProps,
const SkISize& size, SkAlphaType at) const override {
#if RASTER_IMAGE_FILTERS_SUPPORT_SRGB_AND_F16
SkColorSpace* colorSpace = outProps.colorSpace();
#else
SkColorSpace* colorSpace = nullptr;
#endif
SkColorType colorType = colorSpace && colorSpace->gammaIsLinear()
? kRGBA_F16_SkColorType : kN32_SkColorType;
SkImageInfo info = SkImageInfo::Make(size.width(), size.height(), colorType, at,
sk_ref_sp(colorSpace));
return SkSurface::MakeRaster(info);
}