modules/egl/teglImageUtil.cpp

/*-------------------------------------------------------------------------
 * 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 Common utilities for EGL images.
 *//*--------------------------------------------------------------------*/

#include "teglImageUtil.hpp"

#include "tcuTexture.hpp"
#include "tcuTextureUtil.hpp"

#include "egluGLUtil.hpp"
#include "egluNativeWindow.hpp"
#include "egluNativePixmap.hpp"

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

#include "glwEnums.hpp"

#include "gluObjectWrapper.hpp"
#include "gluTextureUtil.hpp"

namespace deqp
{
namespace egl
{
namespace Image
{

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

using de::MovePtr;
using de::UniquePtr;

using tcu::Texture2D;
using tcu::TextureFormat;
using tcu::Vec4;

using glu::Framebuffer;
using glu::Texture;

using eglu::AttribMap;
using eglu::NativeDisplay;
using eglu::NativeDisplayFactory;
using eglu::NativePixmap;
using eglu::NativePixmapFactory;
using eglu::NativeWindow;
using eglu::NativeWindowFactory;
using eglu::UniqueSurface;
using eglu::WindowParams;

using namespace glw;
using namespace eglw;

enum
{
    IMAGE_WIDTH  = 64,
    IMAGE_HEIGHT = 64,
};

template <typename T>
struct NativeSurface : public ManagedSurface
{
public:
    explicit NativeSurface(MovePtr<UniqueSurface> surface, MovePtr<T> native)
        : ManagedSurface(surface)
        , m_native(native)
    {
    }

private:
    UniquePtr<T> m_native;
};

typedef NativeSurface<NativeWindow> NativeWindowSurface;
typedef NativeSurface<NativePixmap> NativePixmapSurface;

MovePtr<ManagedSurface> createSurface(EglTestContext &eglTestCtx, EGLDisplay dpy, EGLConfig config, int width,
                                      int height)
{
    const Library &egl                         = eglTestCtx.getLibrary();
    EGLint surfaceTypeBits                     = eglu::getConfigAttribInt(egl, dpy, config, EGL_SURFACE_TYPE);
    const NativeDisplayFactory &displayFactory = eglTestCtx.getNativeDisplayFactory();
    NativeDisplay &nativeDisplay               = eglTestCtx.getNativeDisplay();

    if (surfaceTypeBits & EGL_PBUFFER_BIT)
    {
        static const EGLint attribs[] = {EGL_WIDTH, width, EGL_HEIGHT, height, EGL_NONE};
        const EGLSurface surface      = egl.createPbufferSurface(dpy, config, attribs);

        EGLU_CHECK_MSG(egl, "eglCreatePbufferSurface()");

        return de::newMovePtr<ManagedSurface>(MovePtr<UniqueSurface>(new UniqueSurface(egl, dpy, surface)));
    }
    else if (surfaceTypeBits & EGL_WINDOW_BIT)
    {
        const NativeWindowFactory &windowFactory =
            selectNativeWindowFactory(displayFactory, eglTestCtx.getTestContext().getCommandLine());

        MovePtr<NativeWindow> window(windowFactory.createWindow(
            &nativeDisplay, dpy, config, nullptr, WindowParams(width, height, WindowParams::VISIBILITY_DONT_CARE)));
        const EGLSurface surface = eglu::createWindowSurface(nativeDisplay, *window, dpy, config, nullptr);

        return MovePtr<ManagedSurface>(
            new NativeWindowSurface(MovePtr<UniqueSurface>(new UniqueSurface(egl, dpy, surface)), window));
    }
    else if (surfaceTypeBits & EGL_PIXMAP_BIT)
    {
        const NativePixmapFactory &pixmapFactory =
            selectNativePixmapFactory(displayFactory, eglTestCtx.getTestContext().getCommandLine());

        MovePtr<NativePixmap> pixmap(pixmapFactory.createPixmap(&nativeDisplay, dpy, config, nullptr, width, height));
        const EGLSurface surface =
            eglu::createPixmapSurface(eglTestCtx.getNativeDisplay(), *pixmap, dpy, config, nullptr);

        return MovePtr<ManagedSurface>(
            new NativePixmapSurface(MovePtr<UniqueSurface>(new UniqueSurface(egl, dpy, surface)), pixmap));
    }
    else
        TCU_FAIL("No valid surface types supported in config");
}

class GLClientBuffer : public ClientBuffer
{
    EGLClientBuffer get(void) const
    {
        return reinterpret_cast<EGLClientBuffer>(static_cast<uintptr_t>(getName()));
    }

protected:
    virtual GLuint getName(void) const = 0;
};

class TextureClientBuffer : public GLClientBuffer
{
public:
    TextureClientBuffer(const glw::Functions &gl) : m_texture(gl)
    {
    }
    GLuint getName(void) const
    {
        return *m_texture;
    }

private:
    glu::Texture m_texture;
};

class GLImageSource : public ImageSource
{
public:
    EGLImageKHR createImage(const Library &egl, EGLDisplay dpy, EGLContext ctx, EGLClientBuffer clientBuffer) const;

protected:
    virtual AttribMap getCreateAttribs(void) const = 0;
    virtual EGLenum getSource(void) const          = 0;
};

EGLImageKHR GLImageSource::createImage(const Library &egl, EGLDisplay dpy, EGLContext ctx,
                                       EGLClientBuffer clientBuffer) const
{
    AttribMap attribMap = getCreateAttribs();

    attribMap[EGL_IMAGE_PRESERVED_KHR] = EGL_TRUE;

    {
        const vector<EGLint> attribs = eglu::attribMapToList(attribMap);
        const EGLImageKHR image      = egl.createImageKHR(dpy, ctx, getSource(), clientBuffer, &attribs.front());
        EGLU_CHECK_MSG(egl, "eglCreateImageKHR()");
        return image;
    }
}

class TextureImageSource : public GLImageSource
{
public:
    TextureImageSource(GLenum internalFormat, GLenum format, GLenum type, bool useTexLevel0)
        : m_internalFormat(internalFormat)
        , m_format(format)
        , m_type(type)
        , m_useTexLevel0(useTexLevel0)
    {
    }
    MovePtr<ClientBuffer> createBuffer(const eglw::Library &egl, const glw::Functions &gl, Texture2D *reference) const;
    GLenum getEffectiveFormat(void) const;
    GLenum getInternalFormat(void) const
    {
        return m_internalFormat;
    }

protected:
    AttribMap getCreateAttribs(void) const;
    virtual void initTexture(const glw::Functions &gl) const = 0;
    virtual GLenum getGLTarget(void) const                   = 0;

    const GLenum m_internalFormat;
    const GLenum m_format;
    const GLenum m_type;
    const bool m_useTexLevel0;
};

bool isSizedFormat(GLenum format)
{
    try
    {
        glu::mapGLInternalFormat(format);
        return true;
    }
    catch (const tcu::InternalError &)
    {
        return false;
    }
}

GLenum getEffectiveFormat(GLenum format, GLenum type)
{
    return glu::getInternalFormat(glu::mapGLTransferFormat(format, type));
}

GLenum TextureImageSource::getEffectiveFormat(void) const
{
    if (isSizedFormat(m_internalFormat))
        return m_internalFormat;
    else
        return deqp::egl::Image::getEffectiveFormat(m_format, m_type);
}

AttribMap TextureImageSource::getCreateAttribs(void) const
{
    AttribMap ret;

    ret[EGL_GL_TEXTURE_LEVEL_KHR] = 0;

    return ret;
}

MovePtr<ClientBuffer> TextureImageSource::createBuffer(const eglw::Library &egl, const glw::Functions &gl,
                                                       Texture2D *ref) const
{
    DE_UNREF(egl);

    MovePtr<TextureClientBuffer> clientBuffer(new TextureClientBuffer(gl));
    const GLuint texture = clientBuffer->getName();
    const GLenum target  = getGLTarget();

    GLU_CHECK_GLW_CALL(gl, bindTexture(target, texture));
    initTexture(gl);

    if (!m_useTexLevel0)
    {
        // Set minification filter to linear. This makes the texture complete.
        GLU_CHECK_GLW_CALL(gl, texParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
    }

    if (ref != nullptr)
    {
        GLenum imgTarget = eglu::getImageGLTarget(getSource());

        *ref = Texture2D(glu::mapGLTransferFormat(m_format, m_type), IMAGE_WIDTH, IMAGE_HEIGHT);
        ref->allocLevel(0);
        tcu::fillWithComponentGradients(ref->getLevel(0), tcu::Vec4(0.0f, 0.0f, 0.0f, 0.0f),
                                        tcu::Vec4(1.0f, 1.0f, 1.0f, 1.0f));

        GLU_CHECK_GLW_CALL(gl, texParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
        GLU_CHECK_GLW_CALL(gl, texParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
        GLU_CHECK_GLW_CALL(gl, texParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
        GLU_CHECK_GLW_CALL(gl, texParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));

        GLU_CHECK_GLW_CALL(gl, texImage2D(imgTarget, 0, m_internalFormat, IMAGE_WIDTH, IMAGE_HEIGHT, 0, m_format,
                                          m_type, ref->getLevel(0).getDataPtr()));
    }
    GLU_CHECK_GLW_CALL(gl, bindTexture(target, 0));
    return MovePtr<ClientBuffer>(clientBuffer);
}

class Texture2DImageSource : public TextureImageSource
{
public:
    Texture2DImageSource(GLenum internalFormat, GLenum format, GLenum type, bool useTexLevel0)
        : TextureImageSource(internalFormat, format, type, useTexLevel0)
    {
    }
    EGLenum getSource(void) const
    {
        return EGL_GL_TEXTURE_2D_KHR;
    }
    string getRequiredExtension(void) const
    {
        return "EGL_KHR_gl_texture_2D_image";
    }
    GLenum getGLTarget(void) const
    {
        return GL_TEXTURE_2D;
    }

protected:
    void initTexture(const glw::Functions &gl) const;
};

void Texture2DImageSource::initTexture(const glw::Functions &gl) const
{
    // Specify mipmap level 0
    GLU_CHECK_CALL_ERROR(
        gl.texImage2D(GL_TEXTURE_2D, 0, m_internalFormat, IMAGE_WIDTH, IMAGE_HEIGHT, 0, m_format, m_type, nullptr),
        gl.getError());
}

class TextureCubeMapImageSource : public TextureImageSource
{
public:
    TextureCubeMapImageSource(EGLenum source, GLenum internalFormat, GLenum format, GLenum type, bool useTexLevel0)
        : TextureImageSource(internalFormat, format, type, useTexLevel0)
        , m_source(source)
    {
    }
    EGLenum getSource(void) const
    {
        return m_source;
    }
    string getRequiredExtension(void) const
    {
        return "EGL_KHR_gl_texture_cubemap_image";
    }
    GLenum getGLTarget(void) const
    {
        return GL_TEXTURE_CUBE_MAP;
    }

protected:
    void initTexture(const glw::Functions &gl) const;

    EGLenum m_source;
};

void TextureCubeMapImageSource::initTexture(const glw::Functions &gl) const
{
    // Specify mipmap level 0 for all faces
    static const GLenum faces[] = {GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
                                   GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
                                   GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z};

    for (int faceNdx = 0; faceNdx < DE_LENGTH_OF_ARRAY(faces); faceNdx++)
        GLU_CHECK_GLW_CALL(gl, texImage2D(faces[faceNdx], 0, m_internalFormat, IMAGE_WIDTH, IMAGE_HEIGHT, 0, m_format,
                                          m_type, nullptr));
}

class RenderbufferClientBuffer : public GLClientBuffer
{
public:
    RenderbufferClientBuffer(const glw::Functions &gl) : m_rbo(gl)
    {
    }
    GLuint getName(void) const
    {
        return *m_rbo;
    }

private:
    glu::Renderbuffer m_rbo;
};

class RenderbufferImageSource : public GLImageSource
{
public:
    RenderbufferImageSource(GLenum format) : m_format(format)
    {
    }

    string getRequiredExtension(void) const
    {
        return "EGL_KHR_gl_renderbuffer_image";
    }
    MovePtr<ClientBuffer> createBuffer(const eglw::Library &egl, const glw::Functions &gl, Texture2D *reference) const;
    GLenum getEffectiveFormat(void) const
    {
        return m_format;
    }

protected:
    EGLenum getSource(void) const
    {
        return EGL_GL_RENDERBUFFER_KHR;
    }
    AttribMap getCreateAttribs(void) const
    {
        return AttribMap();
    }

    GLenum m_format;
};

void initializeStencilRbo(const glw::Functions &gl, GLuint rbo, Texture2D &ref)
{
    static const uint32_t stencilValues[] = {
        0xBF688C11u, 0xB43D2922u, 0x055D5FFBu, 0x9300655Eu, 0x63BE0DF2u,
        0x0345C13Bu, 0x1C184832u, 0xD107040Fu, 0x9B91569Fu, 0x0F0CFDC7u,
    };

    const uint32_t numStencilBits =
        tcu::getTextureFormatBitDepth(
            tcu::getEffectiveDepthStencilTextureFormat(ref.getLevel(0).getFormat(), tcu::Sampler::MODE_STENCIL))
            .x();
    const uint32_t stencilMask = deBitMask32(0, numStencilBits);

    GLU_CHECK_GLW_CALL(gl, framebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rbo));
    GLU_CHECK_GLW_CALL(gl, clearStencil(0));
    GLU_CHECK_GLW_CALL(gl, clear(GL_STENCIL_BUFFER_BIT));
    tcu::clearStencil(ref.getLevel(0), 0);

    // create a pattern
    GLU_CHECK_GLW_CALL(gl, enable(GL_SCISSOR_TEST));
    for (int ndx = 0; ndx < DE_LENGTH_OF_ARRAY(stencilValues); ++ndx)
    {
        const uint32_t stencil = stencilValues[ndx] & stencilMask;
        const tcu::IVec2 size =
            tcu::IVec2((int)((float)(DE_LENGTH_OF_ARRAY(stencilValues) - ndx) *
                             ((float)ref.getWidth() / float(DE_LENGTH_OF_ARRAY(stencilValues)))),
                       (int)((float)(DE_LENGTH_OF_ARRAY(stencilValues) - ndx) *
                             ((float)ref.getHeight() / float(DE_LENGTH_OF_ARRAY(stencilValues) + 4)))); // not symmetric

        if (size.x() == 0 || size.y() == 0)
            break;

        GLU_CHECK_GLW_CALL(gl, scissor(0, 0, size.x(), size.y()));
        GLU_CHECK_GLW_CALL(gl, clearStencil(stencil));
        GLU_CHECK_GLW_CALL(gl, clear(GL_STENCIL_BUFFER_BIT));

        tcu::clearStencil(tcu::getSubregion(ref.getLevel(0), 0, 0, size.x(), size.y()), stencil);
    }

    GLU_CHECK_GLW_CALL(gl, disable(GL_SCISSOR_TEST));
    GLU_CHECK_GLW_CALL(gl, framebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0));
}

void initializeDepthRbo(const glw::Functions &gl, GLuint rbo, Texture2D &ref)
{
    const int NUM_STEPS = 13;

    GLU_CHECK_GLW_CALL(gl, framebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo));

    GLU_CHECK_GLW_CALL(gl, clearDepthf(0.0f));
    GLU_CHECK_GLW_CALL(gl, clear(GL_DEPTH_BUFFER_BIT));
    tcu::clearDepth(ref.getLevel(0), 0.0f);

    // create a pattern
    GLU_CHECK_GLW_CALL(gl, enable(GL_SCISSOR_TEST));
    for (int ndx = 0; ndx < NUM_STEPS; ++ndx)
    {
        const float depth     = (float)ndx / float(NUM_STEPS);
        const tcu::IVec2 size = tcu::IVec2(
            (int)((float)(NUM_STEPS - ndx) * ((float)ref.getWidth() / float(NUM_STEPS))),
            (int)((float)(NUM_STEPS - ndx) * ((float)ref.getHeight() / float(NUM_STEPS + 4)))); // not symmetric

        if (size.x() == 0 || size.y() == 0)
            break;

        GLU_CHECK_GLW_CALL(gl, scissor(0, 0, size.x(), size.y()));
        GLU_CHECK_GLW_CALL(gl, clearDepthf(depth));
        GLU_CHECK_GLW_CALL(gl, clear(GL_DEPTH_BUFFER_BIT));

        tcu::clearDepth(tcu::getSubregion(ref.getLevel(0), 0, 0, size.x(), size.y()), depth);
    }

    GLU_CHECK_GLW_CALL(gl, disable(GL_SCISSOR_TEST));
    GLU_CHECK_GLW_CALL(gl, framebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, 0));
}

void initializeColorRbo(const glw::Functions &gl, GLuint rbo, Texture2D &ref)
{
    static const tcu::Vec4 colorValues[] = {
        tcu::Vec4(0.9f, 0.5f, 0.65f, 1.0f), tcu::Vec4(0.5f, 0.7f, 0.65f, 1.0f), tcu::Vec4(0.2f, 0.5f, 0.65f, 1.0f),
        tcu::Vec4(0.3f, 0.1f, 0.5f, 1.0f),  tcu::Vec4(0.8f, 0.2f, 0.3f, 1.0f),  tcu::Vec4(0.9f, 0.4f, 0.8f, 1.0f),
    };

    GLU_CHECK_GLW_CALL(gl, framebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, rbo));
    GLU_CHECK_GLW_CALL(gl, clearColor(1.0f, 1.0f, 0.0f, 1.0f));
    GLU_CHECK_GLW_CALL(gl, clear(GL_COLOR_BUFFER_BIT));
    tcu::clear(ref.getLevel(0), Vec4(1.0f, 1.0f, 0.0f, 1.0f));

    // create a pattern
    GLU_CHECK_GLW_CALL(gl, enable(GL_SCISSOR_TEST));
    for (int ndx = 0; ndx < DE_LENGTH_OF_ARRAY(colorValues); ++ndx)
    {
        const tcu::IVec2 size =
            tcu::IVec2((int)((float)(DE_LENGTH_OF_ARRAY(colorValues) - ndx) *
                             ((float)ref.getWidth() / float(DE_LENGTH_OF_ARRAY(colorValues)))),
                       (int)((float)(DE_LENGTH_OF_ARRAY(colorValues) - ndx) *
                             ((float)ref.getHeight() / float(DE_LENGTH_OF_ARRAY(colorValues) + 4)))); // not symmetric

        if (size.x() == 0 || size.y() == 0)
            break;

        GLU_CHECK_GLW_CALL(gl, scissor(0, 0, size.x(), size.y()));
        GLU_CHECK_GLW_CALL(
            gl, clearColor(colorValues[ndx].x(), colorValues[ndx].y(), colorValues[ndx].z(), colorValues[ndx].w()));
        GLU_CHECK_GLW_CALL(gl, clear(GL_COLOR_BUFFER_BIT));

        tcu::clear(tcu::getSubregion(ref.getLevel(0), 0, 0, size.x(), size.y()), colorValues[ndx]);
    }

    GLU_CHECK_GLW_CALL(gl, disable(GL_SCISSOR_TEST));
    GLU_CHECK_GLW_CALL(gl, framebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, 0));
}

MovePtr<ClientBuffer> RenderbufferImageSource::createBuffer(const eglw::Library &egl, const glw::Functions &gl,
                                                            Texture2D *ref) const
{
    DE_UNREF(egl);

    MovePtr<RenderbufferClientBuffer> buffer(new RenderbufferClientBuffer(gl));
    const GLuint rbo = buffer->getName();

    GLU_CHECK_CALL_ERROR(gl.bindRenderbuffer(GL_RENDERBUFFER, rbo), gl.getError());

    // Specify storage.
    GLU_CHECK_CALL_ERROR(gl.renderbufferStorage(GL_RENDERBUFFER, m_format, 64, 64), gl.getError());

    if (ref != nullptr)
    {
        Framebuffer fbo(gl);
        const TextureFormat texFormat = glu::mapGLInternalFormat(m_format);

        *ref = tcu::Texture2D(texFormat, 64, 64);
        ref->allocLevel(0);

        gl.bindFramebuffer(GL_FRAMEBUFFER, *fbo);
        switch (m_format)
        {
        case GL_STENCIL_INDEX8:
            initializeStencilRbo(gl, rbo, *ref);
            break;
        case GL_DEPTH_COMPONENT16:
            initializeDepthRbo(gl, rbo, *ref);
            break;
        case GL_RGBA4:
            initializeColorRbo(gl, rbo, *ref);
            break;
        case GL_RGB5_A1:
            initializeColorRbo(gl, rbo, *ref);
            break;
        case GL_RGB565:
            initializeColorRbo(gl, rbo, *ref);
            break;
        default:
            DE_FATAL("Impossible");
        }

        gl.bindFramebuffer(GL_FRAMEBUFFER, 0);
    }

    return MovePtr<ClientBuffer>(buffer);
}

class UnsupportedImageSource : public ImageSource
{
public:
    UnsupportedImageSource(const string &message, GLenum format, bool isYUV)
        : m_message(message)
        , m_format(format)
        , m_isY8Cb8Cr8_420(isYUV)
    {
    }
    string getRequiredExtension(void) const
    {
        fail();
        return "";
    }
    MovePtr<ClientBuffer> createBuffer(const eglw::Library &egl, const glw::Functions &, tcu::Texture2D *) const
    {
        DE_UNREF(egl);
        fail();
        return de::MovePtr<ClientBuffer>();
    }
    EGLImageKHR createImage(const Library &egl, EGLDisplay dpy, EGLContext ctx, EGLClientBuffer clientBuffer) const;
    GLenum getEffectiveFormat(void) const
    {
        return m_format;
    }
    bool isYUVFormatImage(void) const
    {
        return m_isY8Cb8Cr8_420;
    };

private:
    const string m_message;
    GLenum m_format;
    bool m_isY8Cb8Cr8_420;
    void fail(void) const
    {
        TCU_THROW(NotSupportedError, m_message.c_str());
    }
};

EGLImageKHR UnsupportedImageSource::createImage(const Library &, EGLDisplay, EGLContext, EGLClientBuffer) const
{
    fail();
    return EGL_NO_IMAGE_KHR;
}

MovePtr<ImageSource> createTextureImageSource(EGLenum source, GLenum internalFormat, GLenum format, GLenum type,
                                              bool useTexLevel0)
{
    if (source == EGL_GL_TEXTURE_2D_KHR)
        return MovePtr<ImageSource>(new Texture2DImageSource(internalFormat, format, type, useTexLevel0));
    else
        return MovePtr<ImageSource>(new TextureCubeMapImageSource(source, internalFormat, format, type, useTexLevel0));
}

MovePtr<ImageSource> createRenderbufferImageSource(GLenum format)
{
    return MovePtr<ImageSource>(new RenderbufferImageSource(format));
}

MovePtr<ImageSource> createUnsupportedImageSource(const string &message, GLenum format, bool isYUV)
{
    return MovePtr<ImageSource>(new UnsupportedImageSource(message, format, isYUV));
}

} // namespace Image
} // namespace egl
} // namespace deqp