/*

 * Copyright 2011 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#include "src/gpu/ganesh/GrRenderTarget.h"

#include "src/core/SkRectPriv.h"

#include "src/gpu/ganesh/GrAttachment.h"

#include "src/gpu/ganesh/GrBackendUtils.h"

#include "src/gpu/ganesh/GrGpu.h"

#include "src/gpu/ganesh/GrStencilSettings.h"

GrRenderTarget::GrRenderTarget(GrGpu* gpu,

                               const SkISize& dimensions,

                               int sampleCount,

                               GrProtected isProtected,

                               std::string_view label,

                               sk_sp<GrAttachment> stencil)

        : INHERITED(gpu, dimensions, isProtected, label)

        , fSampleCnt(sampleCount) {

    if (this->numSamples() > 1) {

        fMSAAStencilAttachment = std::move(stencil);

    } else {

        fStencilAttachment = std::move(stencil);

    }

}

GrRenderTarget::~GrRenderTarget() = default;

void GrRenderTarget::onRelease() {

    fStencilAttachment = nullptr;

    fMSAAStencilAttachment = nullptr;

    INHERITED::onRelease();

}

void GrRenderTarget::onAbandon() {

    fStencilAttachment = nullptr;

    fMSAAStencilAttachment = nullptr;

    INHERITED::onAbandon();

}

void GrRenderTarget::attachStencilAttachment(sk_sp<GrAttachment> stencil, bool useMSAASurface) {

    auto stencilAttachment = (useMSAASurface) ? &GrRenderTarget::fMSAAStencilAttachment

                                              : &GrRenderTarget::fStencilAttachment;

    if (!stencil && !(this->*stencilAttachment)) {

        // No need to do any work since we currently don't have a stencil attachment and

        // we're not actually adding one.

        return;

    }

    if (!this->completeStencilAttachment(stencil.get(), useMSAASurface)) {

        return;

    }

    this->*stencilAttachment = std::move(stencil);

}

int GrRenderTarget::numStencilBits(bool useMSAASurface) const {

    return GrBackendFormatStencilBits(this->getStencilAttachment(useMSAASurface)->backendFormat());

}