Esempio n. 1
0
    void onDraw(SkCanvas* canvas) override {
        GrRenderTargetContext* renderTargetContext =
            canvas->internal_private_accessTopLayerRenderTargetContext();
        if (!renderTargetContext) {
            skiagm::GM::DrawGpuOnlyMessage(canvas);
            return;
        }

        GrContext* context = canvas->getGrContext();
        if (!context) {
            return;
        }

        GrProxyProvider* proxyProvider = context->contextPriv().proxyProvider();
        sk_sp<GrTextureProxy> proxy[3];

        for (int i = 0; i < 3; ++i) {
            int index = (0 == i) ? 0 : 1;
            GrSurfaceDesc desc;
            desc.fWidth = fBmp[index].width();
            desc.fHeight = fBmp[index].height();
            desc.fConfig = SkImageInfo2GrPixelConfig(fBmp[index].info(), *context->caps());
            SkASSERT(kUnknown_GrPixelConfig != desc.fConfig);

            proxy[i] = proxyProvider->createTextureProxy(
                    desc, SkBudgeted::kYes, fBmp[index].getPixels(), fBmp[index].rowBytes());
            if (!proxy[i]) {
                return;
            }
        }

        constexpr SkScalar kDrawPad = 10.f;
        constexpr SkScalar kTestPad = 10.f;
        constexpr SkScalar kColorSpaceOffset = 36.f;
        SkISize sizes[3] = {{YSIZE, YSIZE}, {USIZE, USIZE}, {VSIZE, VSIZE}};

        for (int space = kJPEG_SkYUVColorSpace; space <= kLastEnum_SkYUVColorSpace; ++space) {
            SkRect renderRect =
                SkRect::MakeWH(SkIntToScalar(fBmp[0].width()), SkIntToScalar(fBmp[0].height()));
            renderRect.outset(kDrawPad, kDrawPad);

            SkScalar y = kDrawPad + kTestPad + space * kColorSpaceOffset;
            SkScalar x = kDrawPad + kTestPad;

            GrPaint grPaint;
            grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc));
            auto fp = GrYUVtoRGBEffect::Make(proxy[0], proxy[1], proxy[2], sizes,
                                             static_cast<SkYUVColorSpace>(space), true);
            if (fp) {
                SkMatrix viewMatrix;
                viewMatrix.setTranslate(x, y);
                grPaint.addColorFragmentProcessor(std::move(fp));
                std::unique_ptr<GrDrawOp> op(GrRectOpFactory::MakeNonAAFill(
                                std::move(grPaint), viewMatrix, renderRect, GrAAType::kNone));
                renderTargetContext->priv().testingOnly_addDrawOp(std::move(op));
            }
        }
    }
sk_sp<SkImage> SkSurface_Gpu::onNewImageSnapshot() {
    GrRenderTargetContext* rtc = fDevice->accessRenderTargetContext();
    if (!rtc) {
        return nullptr;
    }

    GrContext* ctx = fDevice->context();

    if (!rtc->asSurfaceProxy()) {
        return nullptr;
    }

    SkBudgeted budgeted = rtc->asSurfaceProxy()->isBudgeted();

    sk_sp<GrTextureProxy> srcProxy = rtc->asTextureProxyRef();
    // If the original render target is a buffer originally created by the client, then we don't
    // want to ever retarget the SkSurface at another buffer we create. Force a copy now to avoid
    // copy-on-write.
    if (!srcProxy || rtc->priv().refsWrappedObjects()) {
        SkASSERT(rtc->origin() == rtc->asSurfaceProxy()->origin());

        srcProxy = GrSurfaceProxy::Copy(ctx, rtc->asSurfaceProxy(), rtc->mipMapped(), budgeted);
    }

    const SkImageInfo info = fDevice->imageInfo();
    sk_sp<SkImage> image;
    if (srcProxy) {
        // The renderTargetContext coming out of SkGpuDevice should always be exact and the
        // above copy creates a kExact surfaceContext.
        SkASSERT(srcProxy->priv().isExact());
        image = sk_make_sp<SkImage_Gpu>(ctx, kNeedNewImageUniqueID,
                                        info.alphaType(), std::move(srcProxy),
                                        info.refColorSpace(), budgeted);
    }
    return image;
}