C++ GrTexture::texturePriv方法代码示例

void GrResourceIOProcessor::TextureSampler::reset(GrResourceProvider* resourceProvider,
                                                  sk_sp<GrTextureProxy> proxy,
                                                  const GrSamplerParams& params,
                                                  GrShaderFlags visibility) {
    // For now, end the deferral at this time. Once all the TextureSamplers are swapped over
    // to taking a GrSurfaceProxy just use the IORefs on the proxy
    GrTexture* texture = proxy->instantiate(resourceProvider);
    SkASSERT(texture);
    fTexture.set(SkRef(texture), kRead_GrIOType);
    fParams = params;
    fParams.setFilterMode(SkTMin(params.filterMode(), texture->texturePriv().highestFilterMode()));
    fVisibility = visibility;
}

void GrGpu::didWriteToSurface(GrSurface* surface, GrSurfaceOrigin origin, const SkIRect* bounds,
                              uint32_t mipLevels) const {
    SkASSERT(surface);
    // Mark any MIP chain and resolve buffer as dirty if and only if there is a non-empty bounds.
    if (nullptr == bounds || !bounds->isEmpty()) {
        if (GrRenderTarget* target = surface->asRenderTarget()) {
            SkIRect flippedBounds;
            if (kBottomLeft_GrSurfaceOrigin == origin && bounds) {
                flippedBounds = {bounds->fLeft, surface->height() - bounds->fBottom,
                                 bounds->fRight, surface->height() - bounds->fTop};
                bounds = &flippedBounds;
            }
            target->flagAsNeedingResolve(bounds);
        }
        GrTexture* texture = surface->asTexture();
        if (texture && 1 == mipLevels) {
            texture->texturePriv().markMipMapsDirty();
        }
    }
}

std::unique_ptr<SkCrossContextImageData> SkCrossContextImageData::MakeFromEncoded(
        GrContext* context, sk_sp<SkData> encoded, SkColorSpace* dstColorSpace) {
    sk_sp<SkImage> codecImage = SkImage::MakeFromEncoded(std::move(encoded));
    if (!codecImage) {
        return nullptr;
    }

    // Some backends or drivers don't support (safely) moving resources between contexts
    if (!context->caps()->crossContextTextureSupport()) {
        return std::unique_ptr<SkCrossContextImageData>(
            new SkCrossContextImageData(std::move(codecImage)));
    }

    sk_sp<SkImage> textureImage = codecImage->makeTextureImage(context, dstColorSpace);
    if (!textureImage) {
        // TODO: Force decode to raster here? Do mip-mapping, like getDeferredTextureImageData?
        return std::unique_ptr<SkCrossContextImageData>(
            new SkCrossContextImageData(std::move(codecImage)));
    }

    // Crack open the gpu image, extract the backend data, stick it in the SkCCID
    GrTexture* texture = as_IB(textureImage)->peekTexture();
    SkASSERT(texture);

    GrBackendTextureDesc desc;
    desc.fFlags = kNone_GrBackendTextureFlag;
    desc.fOrigin = texture->origin();
    desc.fWidth = texture->width();
    desc.fHeight = texture->height();
    desc.fConfig = texture->config();
    desc.fSampleCnt = 0;

    context->contextPriv().prepareSurfaceForExternalIO(as_IB(textureImage)->peekProxy());
    auto textureData = texture->texturePriv().detachBackendTexture();
    SkASSERT(textureData);

    SkImageInfo info = as_IB(textureImage)->onImageInfo();
    return std::unique_ptr<SkCrossContextImageData>(new SkCrossContextImageData(
        desc, std::move(textureData), info.alphaType(), info.refColorSpace()));
}

//.........这里部分代码省略.........
#endif
            }

            // before we purge the cache, we must flush any accumulated draws
            this->flush();
            fContext->flush();

            // we should have an unused plot now
            if (fContext->getFontCache()->freeUnusedPlot(fStrike, glyph) &&
                fStrike->addGlyphToAtlas(glyph, scaler)) {
                goto HAS_ATLAS;
            }
        }

        if (NULL == glyph->fPath) {
            SkPath* path = SkNEW(SkPath);
            if (!scaler->getGlyphPath(glyph->glyphID(), path)) {
                // flag the glyph as being dead?
                delete path;
                return true;
            }
            glyph->fPath = path;
        }

        // flush any accumulated draws before drawing this glyph as a path.
        this->flush();

        GrContext::AutoMatrix am;
        SkMatrix ctm;
        ctm.setScale(fTextRatio, fTextRatio);
        ctm.postTranslate(sx - dx, sy - dy);
        GrPaint tmpPaint(fPaint);
        am.setPreConcat(fContext, ctm, &tmpPaint);
        GrStrokeInfo strokeInfo(SkStrokeRec::kFill_InitStyle);
        fContext->drawPath(tmpPaint, *glyph->fPath, strokeInfo);

        // remove this glyph from the vertices we need to allocate
        fTotalVertexCount -= kVerticesPerGlyph;
        return true;
    }

HAS_ATLAS:
    SkASSERT(glyph->fPlot);
    GrDrawTarget::DrawToken drawToken = fDrawTarget->getCurrentDrawToken();
    glyph->fPlot->setDrawToken(drawToken);

    GrTexture* texture = glyph->fPlot->texture();
    SkASSERT(texture);

    if (fCurrTexture != texture || fCurrVertex + kVerticesPerGlyph > fTotalVertexCount) {
        this->flush();
        fCurrTexture = texture;
        fCurrTexture->ref();
    }

    bool useColorVerts = !fUseLCDText;

    if (NULL == fVertices) {
        int maxQuadVertices = kVerticesPerGlyph * fContext->getQuadIndexBuffer()->maxQuads();
        fAllocVertexCount = SkMin32(fTotalVertexCount, maxQuadVertices);
        fVertices = alloc_vertices(fDrawTarget,
                                   fAllocVertexCount,
                                   useColorVerts);
    }

    SkFixed tx = SkIntToFixed(glyph->fAtlasLocation.fX + SK_DistanceFieldInset);
    SkFixed ty = SkIntToFixed(glyph->fAtlasLocation.fY + SK_DistanceFieldInset);
    SkFixed tw = SkIntToFixed(glyph->fBounds.width() - 2*SK_DistanceFieldInset);
    SkFixed th = SkIntToFixed(glyph->fBounds.height() - 2*SK_DistanceFieldInset);

    fVertexBounds.joinNonEmptyArg(glyphRect);

    size_t vertSize = get_vertex_stride(useColorVerts);

    SkPoint* positions = reinterpret_cast<SkPoint*>(
                               reinterpret_cast<intptr_t>(fVertices) + vertSize * fCurrVertex);
    positions->setRectFan(glyphRect.fLeft, glyphRect.fTop, glyphRect.fRight, glyphRect.fBottom,
                          vertSize);

    // The texture coords are last in both the with and without color vertex layouts.
    SkPoint* textureCoords = reinterpret_cast<SkPoint*>(
                               reinterpret_cast<intptr_t>(positions) + vertSize  - sizeof(SkPoint));
    textureCoords->setRectFan(SkFixedToFloat(texture->texturePriv().normalizeFixedX(tx)),
                              SkFixedToFloat(texture->texturePriv().normalizeFixedY(ty)),
                              SkFixedToFloat(texture->texturePriv().normalizeFixedX(tx + tw)),
                              SkFixedToFloat(texture->texturePriv().normalizeFixedY(ty + th)),
                              vertSize);
    if (useColorVerts) {
        // color comes after position.
        GrColor* colors = reinterpret_cast<GrColor*>(positions + 1);
        for (int i = 0; i < 4; ++i) {
            *colors = fPaint.getColor();
            colors = reinterpret_cast<GrColor*>(reinterpret_cast<intptr_t>(colors) + vertSize);
        }
    }

    fCurrVertex += 4;
    
    return true;
}

void SkGrPixelRef::onNotifyPixelsChanged() {
    GrTexture* texture = this->getTexture();
    if (texture) {
        texture->texturePriv().dirtyMipMaps(true);
    }
}