/*-------------------------------------------------------------------------
 * drawElements Quality Program EGL Module
 * ---------------------------------------
 *
 * Copyright 2014 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.
 *
 *//*!
 * \file
 * \brief Test EGL_SWAP_BEHAVIOR_PRESERVED_BIT.
 *//*--------------------------------------------------------------------*/

#include "teglPreservingSwapTests.hpp"

#include "tcuImageCompare.hpp"
#include "tcuTestLog.hpp"
#include "tcuSurface.hpp"
#include "tcuTextureUtil.hpp"

#include "egluNativeWindow.hpp"
#include "egluUtil.hpp"

#include "eglwLibrary.hpp"
#include "eglwEnums.hpp"

#include "gluDefs.hpp"
#include "gluRenderContext.hpp"
#include "gluShaderProgram.hpp"

#include "glwDefs.hpp"
#include "glwEnums.hpp"
#include "glwFunctions.hpp"

#include "deRandom.hpp"

#include "deString.h"

#include <vector>
#include <string>

using std::string;
using std::vector;

using namespace eglw;

namespace deqp
{
namespace egl
{

namespace
{
class GLES2Program;
class ReferenceProgram;

class PreservingSwapTest : public TestCase
{
public:
    enum DrawType
    {
        DRAWTYPE_NONE = 0,
        DRAWTYPE_GLES2_CLEAR,
        DRAWTYPE_GLES2_RENDER
    };

    PreservingSwapTest(EglTestContext &eglTestCtx, bool preserveColorbuffer, bool readPixelsBeforeSwap,
                       DrawType preSwapDrawType, DrawType postSwapDrawType, const char *name, const char *description);
    ~PreservingSwapTest(void);

    void init(void);
    void deinit(void);
    IterateResult iterate(void);

private:
    const int m_seed;
    const bool m_preserveColorbuffer;
    const bool m_readPixelsBeforeSwap;
    const DrawType m_preSwapDrawType;
    const DrawType m_postSwapDrawType;

    EGLDisplay m_eglDisplay;
    eglu::NativeWindow *m_window;
    EGLSurface m_eglSurface;
    EGLConfig m_eglConfig;
    EGLContext m_eglContext;
    glw::Functions m_gl;

    GLES2Program *m_gles2Program;
    ReferenceProgram *m_refProgram;

    void initEGLSurface(EGLConfig config);
    void initEGLContext(EGLConfig config);
};

class GLES2Program
{
public:
    GLES2Program(const glw::Functions &gl);
    ~GLES2Program(void);

    void render(int width, int height, float x1, float y1, float x2, float y2, PreservingSwapTest::DrawType drawType);

private:
    const glw::Functions &m_gl;
    glu::ShaderProgram m_glProgram;
    glw::GLuint m_coordLoc;
    glw::GLuint m_colorLoc;

    GLES2Program &operator=(const GLES2Program &);
    GLES2Program(const GLES2Program &);
};

static glu::ProgramSources getSources(void)
{
    const char *const vertexShaderSource = "attribute mediump vec4 a_pos;\n"
                                           "attribute mediump vec4 a_color;\n"
                                           "varying mediump vec4 v_color;\n"
                                           "void main(void)\n"
                                           "{\n"
                                           "\tv_color = a_color;\n"
                                           "\tgl_Position = a_pos;\n"
                                           "}";

    const char *const fragmentShaderSource = "varying mediump vec4 v_color;\n"
                                             "void main(void)\n"
                                             "{\n"
                                             "\tgl_FragColor = v_color;\n"
                                             "}";

    return glu::makeVtxFragSources(vertexShaderSource, fragmentShaderSource);
}

GLES2Program::GLES2Program(const glw::Functions &gl)
    : m_gl(gl)
    , m_glProgram(gl, getSources())
    , m_coordLoc((glw::GLuint)-1)
    , m_colorLoc((glw::GLuint)-1)
{
    m_colorLoc = m_gl.getAttribLocation(m_glProgram.getProgram(), "a_color");
    m_coordLoc = m_gl.getAttribLocation(m_glProgram.getProgram(), "a_pos");
    GLU_EXPECT_NO_ERROR(m_gl.getError(), "Failed to get attribute locations");
}

GLES2Program::~GLES2Program(void)
{
}

void GLES2Program::render(int width, int height, float x1, float y1, float x2, float y2,
                          PreservingSwapTest::DrawType drawType)
{
    if (drawType == PreservingSwapTest::DRAWTYPE_GLES2_RENDER)
    {
        const glw::GLfloat coords[] = {x1, y1, 0.0f, 1.0f, x1, y2, 0.0f, 1.0f, x2, y2, 0.0f, 1.0f,

                                       x2, y2, 0.0f, 1.0f, x2, y1, 0.0f, 1.0f, x1, y1, 0.0f, 1.0f};

        const glw::GLubyte colors[] = {127, 127, 127, 255, 127, 127, 127, 255, 127, 127, 127, 255,

                                       127, 127, 127, 255, 127, 127, 127, 255, 127, 127, 127, 255};

        m_gl.useProgram(m_glProgram.getProgram());
        GLU_EXPECT_NO_ERROR(m_gl.getError(), "glUseProgram() failed");

        m_gl.enableVertexAttribArray(m_coordLoc);
        m_gl.enableVertexAttribArray(m_colorLoc);
        GLU_EXPECT_NO_ERROR(m_gl.getError(), "Failed to enable attributes");

        m_gl.vertexAttribPointer(m_coordLoc, 4, GL_FLOAT, GL_FALSE, 0, coords);
        m_gl.vertexAttribPointer(m_colorLoc, 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, colors);
        GLU_EXPECT_NO_ERROR(m_gl.getError(), "Failed to set attribute pointers");

        m_gl.drawArrays(GL_TRIANGLES, 0, 6);
        GLU_EXPECT_NO_ERROR(m_gl.getError(), "glDrawArrays() failed");

        m_gl.disableVertexAttribArray(m_coordLoc);
        m_gl.disableVertexAttribArray(m_colorLoc);
        GLU_EXPECT_NO_ERROR(m_gl.getError(), "Failed to disable attributes");

        m_gl.useProgram(0);
        GLU_EXPECT_NO_ERROR(m_gl.getError(), "glUseProgram() failed");
    }
    else if (drawType == PreservingSwapTest::DRAWTYPE_GLES2_CLEAR)
    {
        const int ox = width / 2;
        const int oy = height / 2;

        const int px = width;
        const int py = height;

        const int x1i = (int)(((float)px / 2.0f) * x1 + (float)ox);
        const int y1i = (int)(((float)py / 2.0f) * y1 + (float)oy);

        const int x2i = (int)(((float)px / 2.0f) * x2 + (float)ox);
        const int y2i = (int)(((float)py / 2.0f) * y2 + (float)oy);

        m_gl.enable(GL_SCISSOR_TEST);
        m_gl.scissor(x1i, y1i, x2i - x1i, y2i - y1i);
        m_gl.clearColor(0.5f, 0.5f, 0.5f, 1.0f);
        m_gl.clear(GL_COLOR_BUFFER_BIT);
        m_gl.disable(GL_SCISSOR_TEST);
    }
    else
        DE_ASSERT(false);
}

class ReferenceProgram
{
public:
    ReferenceProgram(void);
    ~ReferenceProgram(void);

    void render(tcu::Surface *target, float x1, float y1, float x2, float y2, PreservingSwapTest::DrawType drawType);

private:
    ReferenceProgram(const ReferenceProgram &);
    ReferenceProgram &operator=(const ReferenceProgram &);
};

ReferenceProgram::ReferenceProgram(void)
{
}

ReferenceProgram::~ReferenceProgram(void)
{
}

void ReferenceProgram::render(tcu::Surface *target, float x1, float y1, float x2, float y2,
                              PreservingSwapTest::DrawType drawType)
{
    if (drawType == PreservingSwapTest::DRAWTYPE_GLES2_RENDER || drawType == PreservingSwapTest::DRAWTYPE_GLES2_CLEAR)
    {
        const int ox = target->getWidth() / 2;
        const int oy = target->getHeight() / 2;

        const int px = target->getWidth();
        const int py = target->getHeight();

        const int x1i = (int)((px / 2.0) * x1 + ox);
        const int y1i = (int)((py / 2.0) * y1 + oy);

        const int x2i = (int)((px / 2.0) * x2 + ox);
        const int y2i = (int)((py / 2.0) * y2 + oy);

        const tcu::RGBA color(127, 127, 127, 255);

        for (int y = y1i; y <= y2i; y++)
        {
            for (int x = x1i; x <= x2i; x++)
                target->setPixel(x, y, color);
        }
    }
    else
        DE_ASSERT(false);
}

PreservingSwapTest::PreservingSwapTest(EglTestContext &eglTestCtx, bool preserveColorbuffer, bool readPixelsBeforeSwap,
                                       DrawType preSwapDrawType, DrawType postSwapDrawType, const char *name,
                                       const char *description)
    : TestCase(eglTestCtx, name, description)
    , m_seed(deStringHash(name))
    , m_preserveColorbuffer(preserveColorbuffer)
    , m_readPixelsBeforeSwap(readPixelsBeforeSwap)
    , m_preSwapDrawType(preSwapDrawType)
    , m_postSwapDrawType(postSwapDrawType)
    , m_eglDisplay(EGL_NO_DISPLAY)
    , m_window(DE_NULL)
    , m_eglSurface(EGL_NO_SURFACE)
    , m_eglContext(EGL_NO_CONTEXT)
    , m_gles2Program(DE_NULL)
    , m_refProgram(DE_NULL)
{
}

PreservingSwapTest::~PreservingSwapTest(void)
{
    deinit();
}

EGLConfig getEGLConfig(const Library &egl, EGLDisplay eglDisplay, bool preserveColorbuffer)
{
    const EGLint attribList[] = {EGL_SURFACE_TYPE,
                                 EGL_WINDOW_BIT | (preserveColorbuffer ? EGL_SWAP_BEHAVIOR_PRESERVED_BIT : 0),
                                 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, EGL_NONE};

    return eglu::chooseSingleConfig(egl, eglDisplay, &attribList[0]);
}

void clearColorScreen(const glw::Functions &gl, float red, float green, float blue, float alpha)
{
    gl.clearColor(red, green, blue, alpha);
    gl.clear(GL_COLOR_BUFFER_BIT);
}

void clearColorReference(tcu::Surface *ref, float red, float green, float blue, float alpha)
{
    tcu::clear(ref->getAccess(), tcu::Vec4(red, green, blue, alpha));
}

void readPixels(const glw::Functions &gl, tcu::Surface *screen)
{
    gl.readPixels(0, 0, screen->getWidth(), screen->getHeight(), GL_RGBA, GL_UNSIGNED_BYTE,
                  screen->getAccess().getDataPtr());
}

void PreservingSwapTest::initEGLSurface(EGLConfig config)
{
    const eglu::NativeWindowFactory &factory =
        eglu::selectNativeWindowFactory(m_eglTestCtx.getNativeDisplayFactory(), m_testCtx.getCommandLine());

    m_window =
        factory.createWindow(&m_eglTestCtx.getNativeDisplay(), m_eglDisplay, config, DE_NULL,
                             eglu::WindowParams(480, 480, eglu::parseWindowVisibility(m_testCtx.getCommandLine())));
    m_eglSurface = eglu::createWindowSurface(m_eglTestCtx.getNativeDisplay(), *m_window, m_eglDisplay, config, DE_NULL);
}

void PreservingSwapTest::initEGLContext(EGLConfig config)
{
    const Library &egl        = m_eglTestCtx.getLibrary();
    const EGLint attribList[] = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};

    egl.bindAPI(EGL_OPENGL_ES_API);
    m_eglContext = egl.createContext(m_eglDisplay, config, EGL_NO_CONTEXT, attribList);
    EGLU_CHECK_MSG(egl, "eglCreateContext");

    DE_ASSERT(m_eglSurface != EGL_NO_SURFACE);
    egl.makeCurrent(m_eglDisplay, m_eglSurface, m_eglSurface, m_eglContext);
    EGLU_CHECK_MSG(egl, "eglMakeCurrent");
}

void PreservingSwapTest::init(void)
{
    m_eglDisplay = eglu::getAndInitDisplay(m_eglTestCtx.getNativeDisplay());
    m_eglConfig  = getEGLConfig(m_eglTestCtx.getLibrary(), m_eglDisplay, m_preserveColorbuffer);

    if (m_eglConfig == DE_NULL)
        TCU_THROW(NotSupportedError, "No supported config found");

    initEGLSurface(m_eglConfig);
    initEGLContext(m_eglConfig);

    m_eglTestCtx.initGLFunctions(&m_gl, glu::ApiType::es(2, 0));

    m_gles2Program = new GLES2Program(m_gl);
    m_refProgram   = new ReferenceProgram();
}

void PreservingSwapTest::deinit(void)
{
    const Library &egl = m_eglTestCtx.getLibrary();

    delete m_refProgram;
    m_refProgram = DE_NULL;

    delete m_gles2Program;
    m_gles2Program = DE_NULL;

    if (m_eglContext != EGL_NO_CONTEXT)
    {
        egl.makeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
        egl.destroyContext(m_eglDisplay, m_eglContext);
        m_eglContext = EGL_NO_CONTEXT;
    }

    if (m_eglSurface != EGL_NO_SURFACE)
    {
        egl.destroySurface(m_eglDisplay, m_eglSurface);
        m_eglSurface = EGL_NO_SURFACE;
    }

    if (m_eglDisplay != EGL_NO_DISPLAY)
    {
        egl.terminate(m_eglDisplay);
        m_eglDisplay = EGL_NO_DISPLAY;
    }

    delete m_window;
    m_window = DE_NULL;
}

bool compareToReference(tcu::TestLog &log, const char *name, const char *description, const tcu::Surface &reference,
                        const tcu::Surface &screen, int x, int y, int width, int height)
{
    return tcu::fuzzyCompare(log, name, description, getSubregion(reference.getAccess(), x, y, width, height),
                             getSubregion(screen.getAccess(), x, y, width, height), 0.05f, tcu::COMPARE_LOG_RESULT);
}

bool comparePreAndPostSwapFramebuffers(tcu::TestLog &log, const tcu::Surface &preSwap, const tcu::Surface &postSwap)
{
    return tcu::pixelThresholdCompare(log, "Pre- / Post framebuffer compare", "Compare pre- and post-swap framebuffers",
                                      preSwap, postSwap, tcu::RGBA(0, 0, 0, 0), tcu::COMPARE_LOG_RESULT);
}

TestCase::IterateResult PreservingSwapTest::iterate(void)
{
    const Library &egl = m_eglTestCtx.getLibrary();
    tcu::TestLog &log  = m_testCtx.getLog();
    de::Random rnd(m_seed);

    const int width  = eglu::querySurfaceInt(egl, m_eglDisplay, m_eglSurface, EGL_WIDTH);
    const int height = eglu::querySurfaceInt(egl, m_eglDisplay, m_eglSurface, EGL_HEIGHT);

    const float clearRed   = rnd.getFloat();
    const float clearGreen = rnd.getFloat();
    const float clearBlue  = rnd.getFloat();
    const float clearAlpha = 1.0f;

    const float preSwapX1 = -0.9f * rnd.getFloat();
    const float preSwapY1 = -0.9f * rnd.getFloat();
    const float preSwapX2 = 0.9f * rnd.getFloat();
    const float preSwapY2 = 0.9f * rnd.getFloat();

    const float postSwapX1 = -0.9f * rnd.getFloat();
    const float postSwapY1 = -0.9f * rnd.getFloat();
    const float postSwapX2 = 0.9f * rnd.getFloat();
    const float postSwapY2 = 0.9f * rnd.getFloat();

    tcu::Surface postSwapFramebufferReference(width, height);
    tcu::Surface preSwapFramebufferReference(width, height);

    tcu::Surface postSwapFramebuffer(width, height);
    tcu::Surface preSwapFramebuffer(width, height);

    if (m_preserveColorbuffer)
        EGLU_CHECK_CALL(egl, surfaceAttrib(m_eglDisplay, m_eglSurface, EGL_SWAP_BEHAVIOR, EGL_BUFFER_PRESERVED));

    EGLU_CHECK_CALL(egl, makeCurrent(m_eglDisplay, m_eglSurface, m_eglSurface, m_eglContext));

    clearColorScreen(m_gl, clearRed, clearGreen, clearBlue, clearAlpha);

    if (m_readPixelsBeforeSwap)
        clearColorReference(&preSwapFramebufferReference, clearRed, clearGreen, clearBlue, clearAlpha);

    clearColorReference(&postSwapFramebufferReference, clearRed, clearGreen, clearBlue, clearAlpha);

    if (m_preSwapDrawType != DRAWTYPE_NONE)
    {
        m_gles2Program->render(width, height, preSwapX1, preSwapY1, preSwapX2, preSwapY2, m_preSwapDrawType);
        m_refProgram->render(&postSwapFramebufferReference, preSwapX1, preSwapY1, preSwapX2, preSwapY2,
                             m_preSwapDrawType);
    }

    if (m_readPixelsBeforeSwap)
    {
        if (m_preSwapDrawType != DRAWTYPE_NONE)
            m_refProgram->render(&preSwapFramebufferReference, preSwapX1, preSwapY1, preSwapX2, preSwapY2,
                                 m_preSwapDrawType);

        readPixels(m_gl, &preSwapFramebuffer);
    }

    EGLU_CHECK_CALL(egl, swapBuffers(m_eglDisplay, m_eglSurface));

    if (m_postSwapDrawType != DRAWTYPE_NONE)
    {
        m_refProgram->render(&postSwapFramebufferReference, postSwapX1, postSwapY1, postSwapX2, postSwapY2,
                             m_postSwapDrawType);
        m_gles2Program->render(width, height, postSwapX1, postSwapY1, postSwapX2, postSwapY2, m_postSwapDrawType);
    }

    readPixels(m_gl, &postSwapFramebuffer);

    bool isOk = true;

    if (m_preserveColorbuffer)
    {
        if (m_readPixelsBeforeSwap)
            isOk = isOk && compareToReference(log, "Compare pre-swap framebuffer to reference",
                                              "Compare pre-swap framebuffer to reference", preSwapFramebufferReference,
                                              preSwapFramebuffer, 0, 0, width, height);

        isOk = isOk && compareToReference(log, "Compare post-swap framebuffer to reference",
                                          "Compare post-swap framebuffer to reference", postSwapFramebufferReference,
                                          postSwapFramebuffer, 0, 0, width, height);

        if (m_readPixelsBeforeSwap && m_postSwapDrawType == PreservingSwapTest::DRAWTYPE_NONE)
            isOk = isOk && comparePreAndPostSwapFramebuffers(log, preSwapFramebuffer, postSwapFramebuffer);
    }
    else
    {
        const int ox = width / 2;
        const int oy = height / 2;

        const int px = width;
        const int py = height;

        const int x1i = (int)(((float)px / 2.0f) * postSwapX1 + (float)ox);
        const int y1i = (int)(((float)py / 2.0f) * postSwapY1 + (float)oy);

        const int x2i = (int)(((float)px / 2.0f) * postSwapX2 + (float)ox);
        const int y2i = (int)(((float)py / 2.0f) * postSwapY2 + (float)oy);

        if (m_readPixelsBeforeSwap)
            isOk = isOk && compareToReference(log, "Compare pre-swap framebuffer to reference",
                                              "Compare pre-swap framebuffer to reference", preSwapFramebufferReference,
                                              preSwapFramebuffer, 0, 0, width, height);

        DE_ASSERT(m_postSwapDrawType != DRAWTYPE_NONE);
        isOk = isOk &&
               compareToReference(log, "Compare valid are of post-swap framebuffer to reference",
                                  "Compare valid area of post-swap framebuffer to reference",
                                  postSwapFramebufferReference, postSwapFramebuffer, x1i, y1i, x2i - x1i, y2i - y1i);
    }

    if (isOk)
        m_testCtx.setTestResult(QP_TEST_RESULT_PASS, "Pass");
    else
        m_testCtx.setTestResult(QP_TEST_RESULT_FAIL, "Fail");

    return STOP;
}

string generateTestName(PreservingSwapTest::DrawType preSwapDrawType, PreservingSwapTest::DrawType postSwapDrawType)
{
    std::ostringstream stream;

    if (preSwapDrawType == PreservingSwapTest::DRAWTYPE_NONE && postSwapDrawType == PreservingSwapTest::DRAWTYPE_NONE)
        stream << "no_draw";
    else
    {
        switch (preSwapDrawType)
        {
        case PreservingSwapTest::DRAWTYPE_NONE:
            // Do nothing
            break;

        case PreservingSwapTest::DRAWTYPE_GLES2_RENDER:
            stream << "pre_render";
            break;

        case PreservingSwapTest::DRAWTYPE_GLES2_CLEAR:
            stream << "pre_clear";
            break;

        default:
            DE_ASSERT(false);
        }

        if (preSwapDrawType != PreservingSwapTest::DRAWTYPE_NONE &&
            postSwapDrawType != PreservingSwapTest::DRAWTYPE_NONE)
            stream << "_";

        switch (postSwapDrawType)
        {
        case PreservingSwapTest::DRAWTYPE_NONE:
            // Do nothing
            break;

        case PreservingSwapTest::DRAWTYPE_GLES2_RENDER:
            stream << "post_render";
            break;

        case PreservingSwapTest::DRAWTYPE_GLES2_CLEAR:
            stream << "post_clear";
            break;

        default:
            DE_ASSERT(false);
        }
    }

    return stream.str();
}

} // namespace

PreservingSwapTests::PreservingSwapTests(EglTestContext &eglTestCtx)
    : TestCaseGroup(eglTestCtx, "preserve_swap", "Color buffer preserving swap tests")
{
}

void PreservingSwapTests::init(void)
{
    const PreservingSwapTest::DrawType preSwapDrawTypes[] = {PreservingSwapTest::DRAWTYPE_NONE,
                                                             PreservingSwapTest::DRAWTYPE_GLES2_CLEAR,
                                                             PreservingSwapTest::DRAWTYPE_GLES2_RENDER};

    const PreservingSwapTest::DrawType postSwapDrawTypes[] = {PreservingSwapTest::DRAWTYPE_NONE,
                                                              PreservingSwapTest::DRAWTYPE_GLES2_CLEAR,
                                                              PreservingSwapTest::DRAWTYPE_GLES2_RENDER};

    for (int preserveNdx = 0; preserveNdx < 2; preserveNdx++)
    {
        const bool preserve = (preserveNdx == 0);
        TestCaseGroup *const preserveGroup =
            new TestCaseGroup(m_eglTestCtx, (preserve ? "preserve" : "no_preserve"), "");

        for (int readPixelsNdx = 0; readPixelsNdx < 2; readPixelsNdx++)
        {
            const bool readPixelsBeforeSwap                = (readPixelsNdx == 1);
            TestCaseGroup *const readPixelsBeforeSwapGroup = new TestCaseGroup(
                m_eglTestCtx, (readPixelsBeforeSwap ? "read_before_swap" : "no_read_before_swap"), "");

            for (int preSwapDrawTypeNdx = 0; preSwapDrawTypeNdx < DE_LENGTH_OF_ARRAY(preSwapDrawTypes);
                 preSwapDrawTypeNdx++)
            {
                const PreservingSwapTest::DrawType preSwapDrawType = preSwapDrawTypes[preSwapDrawTypeNdx];

                for (int postSwapDrawTypeNdx = 0; postSwapDrawTypeNdx < DE_LENGTH_OF_ARRAY(postSwapDrawTypes);
                     postSwapDrawTypeNdx++)
                {
                    const PreservingSwapTest::DrawType postSwapDrawType = postSwapDrawTypes[postSwapDrawTypeNdx];

                    // If not preserving and rendering after swap, then there is nothing to verify
                    if (!preserve && postSwapDrawType == PreservingSwapTest::DRAWTYPE_NONE)
                        continue;

                    const std::string name = generateTestName(preSwapDrawType, postSwapDrawType);

                    readPixelsBeforeSwapGroup->addChild(new PreservingSwapTest(m_eglTestCtx, preserve,
                                                                               readPixelsBeforeSwap, preSwapDrawType,
                                                                               postSwapDrawType, name.c_str(), ""));
                }
            }

            preserveGroup->addChild(readPixelsBeforeSwapGroup);
        }

        addChild(preserveGroup);
    }
}

} // namespace egl
} // namespace deqp