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Commit a8a515e8 authored by Chia-I Wu's avatar Chia-I Wu
Browse files

surfaceflinger: add more setAlpha tests 

Add LayerTransactionTest.
  SetAlphaBasic
  SetAlphaClamped

Test: SurfaceFlinger_test
Change-Id: I7cc25f82820c415bd25ab529e25d6fd4ff9e9c41
parent 2113bdd3

services/surfaceflinger/tests/Transaction_test.cpp

+45 −0
Original line number Diff line number Diff line
@@ -875,6 +875,51 @@ TEST_F(LayerTransactionTest, SetTransparentRegionHintOutOfBounds) { 
    screenshot()->expectColor(Rect(16, 16, 48, 48), Color::RED);

}



TEST_F(LayerTransactionTest, SetAlphaBasic) {

    sp<SurfaceControl> layer1;

    sp<SurfaceControl> layer2;

    ASSERT_NO_FATAL_FAILURE(layer1 = createLayer("test 1", 32, 32));

    ASSERT_NO_FATAL_FAILURE(layer2 = createLayer("test 2", 32, 32));

    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer1, {64, 0, 0, 255}));

    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer2, {0, 64, 0, 255}));



    Transaction()

            .setAlpha(layer1, 0.25f)

            .setAlpha(layer2, 0.75f)

            .setPosition(layer2, 16, 0)

            .setLayer(layer2, mLayerZBase + 1)

            .apply();

    {

        auto shot = screenshot();

        uint8_t r = 16; // 64 * 0.25f

        uint8_t g = 48; // 64 * 0.75f

        shot->expectColor(Rect(0, 0, 16, 32), {r, 0, 0, 255});

        shot->expectColor(Rect(32, 0, 48, 32), {0, g, 0, 255});



        r /= 4; // r * (1.0f - 0.75f)

        shot->expectColor(Rect(16, 0, 32, 32), {r, g, 0, 255});

    }

}



TEST_F(LayerTransactionTest, SetAlphaClamped) {

    const Color color = {64, 0, 0, 255};

    sp<SurfaceControl> layer;

    ASSERT_NO_FATAL_FAILURE(layer = createLayer("test", 32, 32));

    ASSERT_NO_FATAL_FAILURE(fillLayerColor(layer, color));



    Transaction().setAlpha(layer, 2.0f).apply();

    {

        SCOPED_TRACE("clamped to 1.0f");

        screenshot()->expectColor(Rect(0, 0, 32, 32), color);

    }



    Transaction().setAlpha(layer, -1.0f).apply();

    {

        SCOPED_TRACE("clamped to 0.0f");

        screenshot()->expectColor(Rect(0, 0, 32, 32), Color::BLACK);

    }

}



class LayerUpdateTest : public ::testing::Test {

protected:

    virtual void SetUp() {