Add simple gradient and colormatrix benchmarks

/*

 * Copyright (C) 2017 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "TestSceneBase.h"

#include <SkColorMatrixFilter.h>

#include <SkGradientShader.h>

class SimpleColorMatrixAnimation;

static TestScene::Registrar _SimpleColorMatrix(TestScene::Info{

    "simpleColorMatrix",

    "A color matrix shader benchmark for the simple scale/translate case, which has R, G, and B "

    "all scaled and translated the same amount.",

    TestScene::simpleCreateScene<SimpleColorMatrixAnimation>

});

class SimpleColorMatrixAnimation : public TestScene {

public:

    std::vector< sp<RenderNode> > cards;

    void createContent(int width, int height, Canvas& canvas) override {

        canvas.drawColor(Color::White, SkBlendMode::kSrcOver);

        sp<RenderNode> card = createCard(0, 0, width, height);

        canvas.drawRenderNode(card.get());

        cards.push_back(card);

    }

    void doFrame(int frameNr) override {

        int curFrame = frameNr % 20;

        for (size_t ci = 0; ci < cards.size(); ci++) {

            cards[ci]->mutateStagingProperties().setTranslationX(curFrame);

            cards[ci]->mutateStagingProperties().setTranslationY(curFrame);

            cards[ci]->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);

        }

    }

private:

    sp<RenderNode> createCard(int x, int y, int width, int height) {

        return TestUtils::createNode(x, y, x + width, y + height,

                [width, height](RenderProperties& props, Canvas& canvas) {

            SkPaint paint;

            float matrix[20] = { 0 };

            // Simple scale/translate case where R, G, and B are all treated equivalently

            matrix[SkColorMatrix::kR_Scale] = 1.1f;

            matrix[SkColorMatrix::kG_Scale] = 1.1f;

            matrix[SkColorMatrix::kB_Scale] = 1.1f;

            matrix[SkColorMatrix::kA_Scale] = 0.5f;

            matrix[SkColorMatrix::kR_Trans] = 5.0f;

            matrix[SkColorMatrix::kG_Trans] = 5.0f;

            matrix[SkColorMatrix::kB_Trans] = 5.0f;

            matrix[SkColorMatrix::kA_Trans] = 10.0f;

            paint.setColorFilter(SkColorFilter::MakeMatrixFilterRowMajor255(matrix));

            // set a shader so it's not likely for the matrix to be optimized away (since a clever

            // enough renderer might apply it directly to the paint color)

            float pos[] = { 0, 1 };

            SkPoint pts[] = { SkPoint::Make(0, 0), SkPoint::Make(width, height) };

            SkColor colors[2] = { Color::DeepPurple_500, Color::DeepOrange_500 };

            paint.setShader(SkGradientShader::MakeLinear(pts, colors, pos, 2,

                SkShader::kClamp_TileMode));

            // overdraw several times to emphasize shader cost

            for (int i = 0; i < 10; i++) {

                canvas.drawRect(i, i, width, height, paint);

            }

        });

    }

};

/*

 * Copyright (C) 2017 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "TestSceneBase.h"

#include <SkGradientShader.h>

class SimpleGradientAnimation;

static TestScene::Registrar _SimpleGradient(TestScene::Info{

    "simpleGradient",

    "A benchmark of shader performance of linear, 2 color gradients with black in them.",

    TestScene::simpleCreateScene<SimpleGradientAnimation>

});

class SimpleGradientAnimation : public TestScene {

public:

    std::vector< sp<RenderNode> > cards;

    void createContent(int width, int height, Canvas& canvas) override {

        canvas.drawColor(Color::White, SkBlendMode::kSrcOver);

        sp<RenderNode> card = createCard(0, 0, width, height);

        canvas.drawRenderNode(card.get());

        cards.push_back(card);

    }

    void doFrame(int frameNr) override {

        int curFrame = frameNr % 20;

        for (size_t ci = 0; ci < cards.size(); ci++) {

            cards[ci]->mutateStagingProperties().setTranslationX(curFrame);

            cards[ci]->mutateStagingProperties().setTranslationY(curFrame);

            cards[ci]->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);

        }

    }

private:

    sp<RenderNode> createCard(int x, int y, int width, int height) {

        return TestUtils::createNode(x, y, x + width, y + height,

                [width, height](RenderProperties& props, Canvas& canvas) {

            float pos[] = { 0, 1 };

            SkPoint pts[] = { SkPoint::Make(0, 0), SkPoint::Make(width, height) };

            SkPaint paint;

            // overdraw several times to emphasize shader cost

            for (int i = 0; i < 10; i++) {

                // use i%2 start position to pick 2 color combo with black in it

                SkColor colors[3] = { Color::Transparent, Color::Black, Color::Cyan_500 };

                paint.setShader(SkGradientShader::MakeLinear(pts, colors + (i % 2), pos, 2,

                    SkShader::kClamp_TileMode));

                canvas.drawRect(i, i, width, height, paint);

            }

        });

    }

};