C++ GrRenderTarget::renderTargetPriv方法代码示例

void GrDrawTarget::drawPath(const GrPipelineBuilder& pipelineBuilder,
                            const GrPathProcessor* pathProc,
                            const GrPath* path,
                            GrPathRendering::FillType fill) {
    // TODO: extract portions of checkDraw that are relevant to path rendering.
    SkASSERT(path);
    SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport());

    SkRect devBounds = path->getBounds();
    pathProc->viewMatrix().mapRect(&devBounds);

    // Setup clip
    GrScissorState scissorState;
    GrPipelineBuilder::AutoRestoreFragmentProcessorState arfps;
    GrPipelineBuilder::AutoRestoreStencil ars;
    if (!this->setupClip(pipelineBuilder, &arfps, &ars, &scissorState, &devBounds)) {
       return;
    }

    // set stencil settings for path
    GrStencilSettings stencilSettings;
    GrRenderTarget* rt = pipelineBuilder.getRenderTarget();
    GrStencilAttachment* sb = rt->renderTargetPriv().attachStencilAttachment();
    this->getPathStencilSettingsForFilltype(fill, sb, &stencilSettings);

    GrDrawTarget::PipelineInfo pipelineInfo(pipelineBuilder, &scissorState, pathProc, &devBounds,
                                            this);
    if (pipelineInfo.mustSkipDraw()) {
        return;
    }

    this->onDrawPath(pathProc, path, stencilSettings, pipelineInfo);
}

void GrDrawTarget::stencilPath(GrPipelineBuilder* pipelineBuilder,
                               const GrPathProcessor* pathProc,
                               const GrPath* path,
                               GrPathRendering::FillType fill) {
    // TODO: extract portions of checkDraw that are relevant to path stenciling.
    SkASSERT(path);
    SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport());
    SkASSERT(pipelineBuilder);

    // Setup clip
    GrScissorState scissorState;
    GrPipelineBuilder::AutoRestoreFragmentProcessors arfp;
    GrPipelineBuilder::AutoRestoreStencil ars;
    if (!this->setupClip(pipelineBuilder, &arfp, &ars, &scissorState, NULL)) {
        return;
    }

    // set stencil settings for path
    GrStencilSettings stencilSettings;
    GrRenderTarget* rt = pipelineBuilder->getRenderTarget();
    GrStencilAttachment* sb = rt->renderTargetPriv().attachStencilAttachment();
    this->getPathStencilSettingsForFilltype(fill, sb, &stencilSettings);

    this->onStencilPath(*pipelineBuilder, pathProc, path, scissorState, stencilSettings);
}

void GrStencilPathOp::onExecute(GrOpFlushState* state) {
    GrRenderTarget* rt = state->drawOpArgs().renderTarget();
    SkASSERT(rt);

    int numStencilBits = rt->renderTargetPriv().numStencilBits();
    GrStencilSettings stencil(GrPathRendering::GetStencilPassSettings(fFillType),
                              fHasStencilClip, numStencilBits);

    GrPathRendering::StencilPathArgs args(fUseHWAA, state->drawOpArgs().fProxy,
                                          &fViewMatrix, &fScissor, &stencil);
    state->gpu()->pathRendering()->stencilPath(args, fPath.get());
}

void GrDrawTarget::drawPaths(GrPipelineBuilder* pipelineBuilder,
                             const GrPathProcessor* pathProc,
                             const GrPathRange* pathRange,
                             const void* indices,
                             PathIndexType indexType,
                             const float transformValues[],
                             PathTransformType transformType,
                             int count,
                             GrPathRendering::FillType fill) {
    SkASSERT(this->caps()->shaderCaps()->pathRenderingSupport());
    SkASSERT(pathRange);
    SkASSERT(indices);
    SkASSERT(0 == reinterpret_cast<long>(indices) % GrPathRange::PathIndexSizeInBytes(indexType));
    SkASSERT(transformValues);
    SkASSERT(pipelineBuilder);

    // Setup clip
    GrScissorState scissorState;
    GrPipelineBuilder::AutoRestoreFragmentProcessors arfp;
    GrPipelineBuilder::AutoRestoreStencil ars;

    if (!this->setupClip(pipelineBuilder, &arfp, &ars, &scissorState, NULL)) {
        return;
    }

    // set stencil settings for path
    GrStencilSettings stencilSettings;
    GrRenderTarget* rt = pipelineBuilder->getRenderTarget();
    GrStencilAttachment* sb = rt->renderTargetPriv().attachStencilAttachment();
    this->getPathStencilSettingsForFilltype(fill, sb, &stencilSettings);

    // Don't compute a bounding box for dst copy texture, we'll opt
    // instead for it to just copy the entire dst. Realistically this is a moot
    // point, because any context that supports NV_path_rendering will also
    // support NV_blend_equation_advanced.
    GrDrawTarget::PipelineInfo pipelineInfo(pipelineBuilder, &scissorState, pathProc, NULL, this);
    if (pipelineInfo.mustSkipDraw()) {
        return;
    }

    this->onDrawPaths(pathProc, pathRange, indices, indexType, transformValues,
                      transformType, count, stencilSettings, pipelineInfo);
}

void GrClipMaskManager::setPipelineBuilderStencil(GrPipelineBuilder* pipelineBuilder,
        GrPipelineBuilder::AutoRestoreStencil* ars) {
    // We make two copies of the StencilSettings here (except in the early
    // exit scenario. One copy from draw state to the stack var. Then another
    // from the stack var to the gpu. We could make this class hold a ptr to
    // GrGpu's fStencilSettings and eliminate the stack copy here.

    // use stencil for clipping if clipping is enabled and the clip
    // has been written into the stencil.
    GrStencilSettings settings;

    // The GrGpu client may not be using the stencil buffer but we may need to
    // enable it in order to respect a stencil clip.
    if (pipelineBuilder->getStencil().isDisabled()) {
        if (GrClipMaskManager::kRespectClip_StencilClipMode == fClipMode) {
            settings = basic_apply_stencil_clip_settings();
        } else {
            return;
        }
    } else {
        settings = pipelineBuilder->getStencil();
    }

    int stencilBits = 0;
    GrRenderTarget* rt = pipelineBuilder->getRenderTarget();
    GrStencilBuffer* stencilBuffer = rt->renderTargetPriv().attachStencilBuffer();
    if (stencilBuffer) {
        stencilBits = stencilBuffer->bits();
    }

    SkASSERT(fClipTarget->caps()->stencilWrapOpsSupport() || !settings.usesWrapOp());
    SkASSERT(fClipTarget->caps()->twoSidedStencilSupport() || !settings.isTwoSided());
    this->adjustStencilParams(&settings, fClipMode, stencilBits);
    ars->set(pipelineBuilder);
    pipelineBuilder->setStencil(settings);
}

bool GrVkProgramDescBuilder::Build(GrProgramDesc* desc,
                                   const GrPrimitiveProcessor& primProc,
                                   const GrPipeline& pipeline,
                                   const GrGLSLCaps& glslCaps) {
    // The descriptor is used as a cache key. Thus when a field of the
    // descriptor will not affect program generation (because of the attribute
    // bindings in use or other descriptor field settings) it should be set
    // to a canonical value to avoid duplicate programs with different keys.

    GrVkProgramDesc* vkDesc = (GrVkProgramDesc*)desc;

    GR_STATIC_ASSERT(0 == kProcessorKeysOffset % sizeof(uint32_t));
    // Make room for everything up to the effect keys.
    vkDesc->key().reset();
    vkDesc->key().push_back_n(kProcessorKeysOffset);

    GrProcessorKeyBuilder b(&vkDesc->key());

    primProc.getGLSLProcessorKey(glslCaps, &b);
    if (!gen_meta_key(primProc, glslCaps, 0, &b)) {
        vkDesc->key().reset();
        return false;
    }
    GrProcessor::RequiredFeatures requiredFeatures = primProc.requiredFeatures();

    for (int i = 0; i < pipeline.numFragmentProcessors(); ++i) {
        const GrFragmentProcessor& fp = pipeline.getFragmentProcessor(i);
        if (!gen_frag_proc_and_meta_keys(primProc, fp, glslCaps, &b)) {
            vkDesc->key().reset();
            return false;
        }
        requiredFeatures |= fp.requiredFeatures();
    }

    const GrXferProcessor& xp = pipeline.getXferProcessor();
    xp.getGLSLProcessorKey(glslCaps, &b);
    if (!gen_meta_key(xp, glslCaps, 0, &b)) {
        vkDesc->key().reset();
        return false;
    }
    requiredFeatures |= xp.requiredFeatures();

    // --------DO NOT MOVE HEADER ABOVE THIS LINE--------------------------------------------------
    // Because header is a pointer into the dynamic array, we can't push any new data into the key
    // below here.
    KeyHeader* header = vkDesc->atOffset<KeyHeader, kHeaderOffset>();

    // make sure any padding in the header is zeroed.
    memset(header, 0, kHeaderSize);

    GrRenderTarget* rt = pipeline.getRenderTarget();

    if (requiredFeatures & (GrProcessor::kFragmentPosition_RequiredFeature |
                            GrProcessor::kSampleLocations_RequiredFeature)) {
        header->fSurfaceOriginKey = GrGLSLFragmentShaderBuilder::KeyForSurfaceOrigin(rt->origin());
    } else {
        header->fSurfaceOriginKey = 0;
    }

    if (requiredFeatures & GrProcessor::kSampleLocations_RequiredFeature) {
        SkASSERT(pipeline.isHWAntialiasState());
        header->fSamplePatternKey =
            rt->renderTargetPriv().getMultisampleSpecs(pipeline.getStencil()).fUniqueID;
    } else {
        header->fSamplePatternKey = 0;
    }

    header->fOutputSwizzle = glslCaps.configOutputSwizzle(rt->config()).asKey();

    if (pipeline.ignoresCoverage()) {
        header->fIgnoresCoverage = 1;
    } else {
        header->fIgnoresCoverage = 0;
    }

    header->fSnapVerticesToPixelCenters = pipeline.snapVerticesToPixelCenters();
    header->fColorEffectCnt = pipeline.numColorFragmentProcessors();
    header->fCoverageEffectCnt = pipeline.numCoverageFragmentProcessors();
    vkDesc->finalize();
    return true;
}

GrPipeline* GrPipeline::CreateAt(void* memory, const CreateArgs& args,
                                 GrXPOverridesForBatch* overrides) {
    const GrPipelineBuilder& builder = *args.fPipelineBuilder;

    GrPipeline* pipeline = new (memory) GrPipeline;
    GrRenderTarget* rt = args.fDrawContext->accessRenderTarget();
    pipeline->fRenderTarget.reset(rt);
    SkASSERT(pipeline->fRenderTarget);
    pipeline->fScissorState = *args.fScissor;
    if (builder.hasUserStencilSettings() || args.fHasStencilClip) {
        const GrRenderTargetPriv& rtPriv = rt->renderTargetPriv();
        pipeline->fStencilSettings.reset(*builder.getUserStencil(), args.fHasStencilClip,
                                         rtPriv.numStencilBits());
        SkASSERT(!pipeline->fStencilSettings.usesWrapOp() || args.fCaps->stencilWrapOpsSupport());
    }
    pipeline->fDrawFace = builder.getDrawFace();

    pipeline->fFlags = 0;
    if (builder.isHWAntialias()) {
        pipeline->fFlags |= kHWAA_Flag;
    }
    if (builder.snapVerticesToPixelCenters()) {
        pipeline->fFlags |= kSnapVertices_Flag;
    }
    if (builder.getDisableOutputConversionToSRGB()) {
        pipeline->fFlags |= kDisableOutputConversionToSRGB_Flag;
    }
    if (builder.getAllowSRGBInputs()) {
        pipeline->fFlags |= kAllowSRGBInputs_Flag;
    }
    if (builder.getUsesDistanceVectorField()) {
        pipeline->fFlags |= kUsesDistanceVectorField_Flag;
    }
    if (args.fHasStencilClip) {
        pipeline->fFlags |= kHasStencilClip_Flag;
    }

    // Create XferProcessor from DS's XPFactory
    bool hasMixedSamples = args.fDrawContext->hasMixedSamples() &&
                           (builder.isHWAntialias() || !pipeline->fStencilSettings.isDisabled());
    const GrXPFactory* xpFactory = builder.getXPFactory();
    SkAutoTUnref<GrXferProcessor> xferProcessor;
    if (xpFactory) {
        xferProcessor.reset(xpFactory->createXferProcessor(args.fOpts,
                                                           hasMixedSamples,
                                                           &args.fDstTexture,
                                                           *args.fCaps));
        if (!xferProcessor) {
            pipeline->~GrPipeline();
            return nullptr;
        }
    } else {
        // This may return nullptr in the common case of src-over implemented using hw blending.
        xferProcessor.reset(GrPorterDuffXPFactory::CreateSrcOverXferProcessor(
                                                                        *args.fCaps,
                                                                        args.fOpts,
                                                                        hasMixedSamples,
                                                                        &args.fDstTexture));
    }
    GrColor overrideColor = GrColor_ILLEGAL;
    if (args.fOpts.fColorPOI.firstEffectiveProcessorIndex() != 0) {
        overrideColor = args.fOpts.fColorPOI.inputColorToFirstEffectiveProccesor();
    }

    GrXferProcessor::OptFlags optFlags = GrXferProcessor::kNone_OptFlags;

    const GrXferProcessor* xpForOpts = xferProcessor ? xferProcessor.get() :
                                                       &GrPorterDuffXPFactory::SimpleSrcOverXP();
    optFlags = xpForOpts->getOptimizations(args.fOpts,
                                           pipeline->fStencilSettings.doesWrite(),
                                           &overrideColor,
                                           *args.fCaps);

    // When path rendering the stencil settings are not always set on the GrPipelineBuilder
    // so we must check the draw type. In cases where we will skip drawing we simply return a
    // null GrPipeline.
    if (GrXferProcessor::kSkipDraw_OptFlag & optFlags) {
        pipeline->~GrPipeline();
        return nullptr;
    }

    // No need to have an override color if it isn't even going to be used.
    if (SkToBool(GrXferProcessor::kIgnoreColor_OptFlag & optFlags)) {
        overrideColor = GrColor_ILLEGAL;
    }

    pipeline->fXferProcessor.reset(xferProcessor);

    int firstColorProcessorIdx = args.fOpts.fColorPOI.firstEffectiveProcessorIndex();

    // TODO: Once we can handle single or four channel input into coverage GrFragmentProcessors
    // then we can use GrPipelineBuilder's coverageProcInfo (like color above) to set this initial
    // information.
    int firstCoverageProcessorIdx = 0;

    pipeline->adjustProgramFromOptimizations(builder, optFlags, args.fOpts.fColorPOI,
                                             args.fOpts.fCoveragePOI, &firstColorProcessorIdx,
                                             &firstCoverageProcessorIdx);

    bool usesLocalCoords = false;
//.........这里部分代码省略.........