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Commit d6c938f0 authored by Jamie Gennis's avatar Jamie Gennis
Browse files

SurfaceTexture: add a blit-to-FBO test 

This change adds a test for blitting (via GL rendering) from a
SurfaceTexture to an FBO.

Change-Id: Ib3386fcc3f37153277f3e37a26347441bb80ab58
parent be6ab576

libs/gui/tests/SurfaceTexture_test.cpp

+111 −0
Original line number Diff line number Diff line
@@ -536,6 +536,20 @@ void fillRGBA8Buffer(uint8_t* buf, int w, int h, int stride) { 
    }

}



void fillRGBA8BufferSolid(uint8_t* buf, int w, int h, int stride, uint8_t r,

        uint8_t g, uint8_t b, uint8_t a) {

    const size_t PIXEL_SIZE = 4;

    for (int y = 0; y < h; y++) {

        for (int x = 0; x < h; x++) {

            off_t offset = (y * stride + x) * PIXEL_SIZE;

            buf[offset + 0] = r;

            buf[offset + 1] = g;

            buf[offset + 2] = b;

            buf[offset + 3] = a;

        }

    }

}



TEST_F(SurfaceTextureGLTest, TexturingFromCpuFilledYV12BufferNpot) {

    const int texWidth = 64;

    const int texHeight = 66;
@@ -1616,4 +1630,101 @@ TEST_F(SurfaceTextureGLThreadToGLTest, 
    }

}



class SurfaceTextureFBOTest : public SurfaceTextureGLTest {

protected:



    virtual void SetUp() {

        SurfaceTextureGLTest::SetUp();



        glGenFramebuffers(1, &mFbo);

        ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());



        glGenTextures(1, &mFboTex);

        glBindTexture(GL_TEXTURE_2D, mFboTex);

        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, getSurfaceWidth(),

                getSurfaceHeight(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);

        glBindTexture(GL_TEXTURE_2D, 0);

        ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());



        glBindFramebuffer(GL_FRAMEBUFFER, mFbo);

        glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,

                GL_TEXTURE_2D, mFboTex, 0);

        glBindFramebuffer(GL_FRAMEBUFFER, 0);

        ASSERT_EQ(GLenum(GL_NO_ERROR), glGetError());

    }



    virtual void TearDown() {

        SurfaceTextureGLTest::TearDown();



        glDeleteTextures(1, &mFboTex);

        glDeleteFramebuffers(1, &mFbo);

    }



    GLuint mFbo;

    GLuint mFboTex;

};



// This test is intended to verify that proper synchronization is done when

// rendering into an FBO.

TEST_F(SurfaceTextureFBOTest, BlitFromCpuFilledBufferToFbo) {

    const int texWidth = 64;

    const int texHeight = 64;



    ASSERT_EQ(NO_ERROR, native_window_set_buffers_geometry(mANW.get(),

            texWidth, texHeight, HAL_PIXEL_FORMAT_RGBA_8888));

    ASSERT_EQ(NO_ERROR, native_window_set_usage(mANW.get(),

            GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN));



    android_native_buffer_t* anb;

    ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));

    ASSERT_TRUE(anb != NULL);



    sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));

    ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(), buf->getNativeBuffer()));



    // Fill the buffer with green

    uint8_t* img = NULL;

    buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));

    fillRGBA8BufferSolid(img, texWidth, texHeight, buf->getStride(), 0, 255,

            0, 255);

    buf->unlock();

    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer()));



    ASSERT_EQ(NO_ERROR, mST->updateTexImage());



    glBindFramebuffer(GL_FRAMEBUFFER, mFbo);

    drawTexture();

    glBindFramebuffer(GL_FRAMEBUFFER, 0);



    for (int i = 0; i < 4; i++) {

        SCOPED_TRACE(String8::format("frame %d", i).string());



        ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));

        ASSERT_TRUE(anb != NULL);



        buf = new GraphicBuffer(anb, false);

        ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(),

                buf->getNativeBuffer()));



        // Fill the buffer with red

        ASSERT_EQ(NO_ERROR, buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN,

                (void**)(&img)));

        fillRGBA8BufferSolid(img, texWidth, texHeight, buf->getStride(), 255, 0,

                0, 255);

        ASSERT_EQ(NO_ERROR, buf->unlock());

        ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(),

                buf->getNativeBuffer()));



        ASSERT_EQ(NO_ERROR, mST->updateTexImage());



        drawTexture();



        EXPECT_TRUE(checkPixel( 24, 39, 255, 0, 0, 255));

    }



    glBindFramebuffer(GL_FRAMEBUFFER, mFbo);



    EXPECT_TRUE(checkPixel( 24, 39, 0, 255, 0, 255));

}



} // namespace android