C++ GrPipelineBuilder::setXPFactory方法代码示例

static void test_path(GrDrawTarget* dt, GrRenderTarget* rt, GrResourceProvider* rp,
                      const SkPath& path) {
    GrTessellatingPathRenderer tess;
    GrPipelineBuilder pipelineBuilder;
    pipelineBuilder.setXPFactory(
        GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref();
    pipelineBuilder.setRenderTarget(rt);
    GrStrokeInfo stroke(SkStrokeRec::kFill_InitStyle);
    GrPathRenderer::DrawPathArgs args;
    args.fTarget = dt;
    args.fPipelineBuilder = &pipelineBuilder;
    args.fResourceProvider = rp;
    args.fColor = GrColor_WHITE;
    args.fViewMatrix = &SkMatrix::I();
    args.fPath = &path;
    args.fStroke = &stroke;
    args.fAntiAlias = false;
    tess.drawPath(args);
}

void GrDrawTarget::clear(const SkIRect* rect,
                         GrColor color,
                         bool canIgnoreRect,
                         GrRenderTarget* renderTarget) {
    SkIRect rtRect = SkIRect::MakeWH(renderTarget->width(), renderTarget->height());
    SkIRect clippedRect;
    if (!rect ||
        (canIgnoreRect && this->caps()->fullClearIsFree()) ||
        rect->contains(rtRect)) {
        rect = &rtRect;
    } else {
        clippedRect = *rect;
        if (!clippedRect.intersect(rtRect)) {
            return;
        }
        rect = &clippedRect;
    }

    if (this->caps()->useDrawInsteadOfClear()) {
        // This works around a driver bug with clear by drawing a rect instead.
        // The driver will ignore a clear if it is the only thing rendered to a
        // target before the target is read.
        if (rect == &rtRect) {
            this->discard(renderTarget);
        }

        GrPipelineBuilder pipelineBuilder;
        pipelineBuilder.setXPFactory(
            GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref();
        pipelineBuilder.setRenderTarget(renderTarget);

        SkRect scalarRect = SkRect::Make(*rect);
        SkAutoTUnref<GrDrawBatch> batch(
                GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(), scalarRect,
                                                    nullptr, nullptr));
        this->drawBatch(pipelineBuilder, batch);
    } else {
        GrBatch* batch = new GrClearBatch(*rect, color, renderTarget);
        this->recordBatch(batch);
        batch->unref();
    }
}

bool GrDrawingManager::ProgramUnitTest(GrContext* context,
                                       GrDrawTarget* drawTarget,
                                       int maxStages) {
    GrDrawingManager* drawingManager = context->drawingManager();

    // setup dummy textures
    GrSurfaceDesc dummyDesc;
    dummyDesc.fFlags = kRenderTarget_GrSurfaceFlag;
    dummyDesc.fConfig = kSkia8888_GrPixelConfig;
    dummyDesc.fWidth = 34;
    dummyDesc.fHeight = 18;
    SkAutoTUnref<GrTexture> dummyTexture1(
        context->textureProvider()->createTexture(dummyDesc, false, nullptr, 0));
    dummyDesc.fFlags = kNone_GrSurfaceFlags;
    dummyDesc.fConfig = kAlpha_8_GrPixelConfig;
    dummyDesc.fWidth = 16;
    dummyDesc.fHeight = 22;
    SkAutoTUnref<GrTexture> dummyTexture2(
        context->textureProvider()->createTexture(dummyDesc, false, nullptr, 0));

    if (!dummyTexture1 || ! dummyTexture2) {
        SkDebugf("Could not allocate dummy textures");
        return false;
    }

    GrTexture* dummyTextures[] = {dummyTexture1.get(), dummyTexture2.get()};

    // dummy scissor state
    GrScissorState scissor;

    // wide open clip
    GrClip clip;

    SkRandom random;
    static const int NUM_TESTS = 2048;
    for (int t = 0; t < NUM_TESTS; t++) {
        // setup random render target(can fail)
        SkAutoTUnref<GrRenderTarget> rt(random_render_target(
            context->textureProvider(), &random, context->caps()));
        if (!rt.get()) {
            SkDebugf("Could not allocate render target");
            return false;
        }

        GrPipelineBuilder pipelineBuilder;
        pipelineBuilder.setRenderTarget(rt.get());
        pipelineBuilder.setClip(clip);

        SkAutoTUnref<GrDrawBatch> batch(GrRandomDrawBatch(&random, context));
        SkASSERT(batch);

        GrProcessorTestData ptd(&random, context, context->caps(), dummyTextures);
        set_random_color_coverage_stages(&pipelineBuilder, &ptd, maxStages);
        set_random_xpf(&pipelineBuilder, &ptd);
        set_random_state(&pipelineBuilder, &random);
        set_random_stencil(&pipelineBuilder, &random);

        drawTarget->drawBatch(pipelineBuilder, batch);
    }
    // Flush everything, test passes if flush is successful(ie, no asserts are hit, no crashes)
    drawingManager->flush();

    // Validate that GrFPs work correctly without an input.
    GrSurfaceDesc rtDesc;
    rtDesc.fWidth = kRenderTargetWidth;
    rtDesc.fHeight = kRenderTargetHeight;
    rtDesc.fFlags = kRenderTarget_GrSurfaceFlag;
    rtDesc.fConfig = kRGBA_8888_GrPixelConfig;
    SkAutoTUnref<GrRenderTarget> rt(
        context->textureProvider()->createTexture(rtDesc, false)->asRenderTarget());
    int fpFactoryCnt = GrProcessorTestFactory<GrFragmentProcessor>::Count();
    for (int i = 0; i < fpFactoryCnt; ++i) {
        // Since FP factories internally randomize, call each 10 times.
        for (int j = 0; j < 10; ++j) {
            SkAutoTUnref<GrDrawBatch> batch(GrRandomDrawBatch(&random, context));
            SkASSERT(batch);
            GrProcessorTestData ptd(&random, context, context->caps(), dummyTextures);
            GrPipelineBuilder builder;
            builder.setXPFactory(GrPorterDuffXPFactory::Create(SkXfermode::kSrc_Mode))->unref();
            builder.setRenderTarget(rt);
            builder.setClip(clip);

            SkAutoTUnref<const GrFragmentProcessor> fp(
                GrProcessorTestFactory<GrFragmentProcessor>::CreateIdx(i, &ptd));
            SkAutoTUnref<const GrFragmentProcessor> blockFP(
                BlockInputFragmentProcessor::Create(fp));
            builder.addColorFragmentProcessor(blockFP);

            drawTarget->drawBatch(builder, batch);
            drawingManager->flush();
        }
    }

    return true;
}