fix [2167050] glTexImage2D code path buggy in SurfaceFlinger

When EGLImage extension is not available, SurfaceFlinger will fallback to using
glTexImage2D and glTexSubImage2D instead, which requires 50% more memory and an
extra copy. However this code path has never been exercised and had some bugs
which this patch fix.

Mainly the scale factor wasn't computed right when falling back on glDrawElements.
We also fallback to this mode of operation if a buffer doesn't have the adequate
usage bits for EGLImage usage.

This changes only code that is currently not executed. Some refactoring was needed to
keep the change clean. This doesn't change anything functionaly.

1 files changed, 0 insertions, 726 deletions

diff --git a/opengl/tests/copybits/copybits.cpp b/opengl/tests/copybits/copybits.cpp
deleted file mode 100644
index 11dfb6e..0000000
--- a/opengl/tests/copybits/copybits.cpp
+++ /dev/null
@@ -1,726 +0,0 @@
-// Test software OpenGL hardware accelleration using copybits.
-
-#define LOG_TAG "copybits_test"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <sys/types.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/time.h>
-
-#include <ui/PixelFormat.h>
-
-#include <cutils/log.h>
-#include <cutils/native_handle.h>
-
-#include <utils/Atomic.h>
-
-#include <private/ui/SurfaceBuffer.h>
-#include <pixelflinger/pixelflinger.h>
-
-#include <hardware/gralloc.h>
-#include <hardware/hardware.h>
-
-#include <ui/FramebufferNativeWindow.h>
-#include <ui/EGLUtils.h>
-
-#define EGL_EGLEXT_PROTOTYPES
-#define GL_GLEXT_PROTOTYPES
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include <GLES/gl.h>
-#include <GLES/glext.h>
-
-using namespace android;
-
-EGLDisplay eglDisplay;
-EGLSurface eglSurface;
-EGLContext eglContext;
-GLuint texture;
-
-hw_module_t const* gralloc_module;
-alloc_device_t  *sAllocDev;
-
-#define FIXED_ONE 0x10000 /* 1.0 in 16.16 fixed point. */
-
-int init_gl_surface();
-void free_gl_surface();
-void init_scene();
-
-int create_physical_texture();
-int readTimer();
-
-// ===========================================================================
-// Buffer an implementation of android_native_buffer_t
-// ===========================================================================
-
-class NativeBuffer;
-
-class Buffer : public android::SurfaceBuffer
-{
-public:
-    // creates w * h buffer
-    Buffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage);
-
-    // return status
-    status_t initCheck() const;
-
-    uint32_t getWidth() const           { return width; }
-    uint32_t getHeight() const          { return height; }
-    uint32_t getStride() const          { return stride; }
-    uint32_t getUsage() const           { return usage; }
-    PixelFormat getPixelFormat() const  { return format; }
-    
-    
-    android_native_buffer_t* getNativeBuffer() const;
-
-    void setPixel(int x, int y, int r, int g, int b, int a);
-
-    status_t lock(GGLSurface* surface, uint32_t usage);
-    void lock() {
-        GGLSurface s;
-        lock(&s, GRALLOC_USAGE_SW_WRITE_OFTEN);
-        mData = (void*)s.data;
-    }
-
-private:
-    friend class LightRefBase<Buffer>;
-    Buffer(const Buffer& rhs);
-    virtual ~Buffer();
-    Buffer& operator = (const Buffer& rhs);
-    const Buffer& operator = (const Buffer& rhs) const;
-
-    status_t initSize(uint32_t w, uint32_t h);
-
-    ssize_t                 mInitCheck;
-    void*                   mData;
-};
-
-Buffer::Buffer(uint32_t w, uint32_t h, PixelFormat format, uint32_t usage)
-    : SurfaceBuffer(), mInitCheck(NO_INIT)
-{
-    this->usage = usage;
-    this->format = format;
-    if (w>0 && h>0) {
-        mInitCheck = initSize(w, h);
-    }
-}
-
-Buffer::~Buffer()
-{
-    if (handle) {
-        sAllocDev->free(sAllocDev, handle);
-    }
-}
-
-status_t Buffer::initCheck() const {
-    return mInitCheck;
-}
-
-android_native_buffer_t* Buffer::getNativeBuffer() const
-{
-    return static_cast<android_native_buffer_t*>(const_cast<Buffer*>(this));
-}
-
-status_t Buffer::initSize(uint32_t w, uint32_t h)
-{
-    status_t err = NO_ERROR;
-
-    err = sAllocDev->alloc(sAllocDev, w, h, format, usage, &handle, &stride);
-    
-    if (err == NO_ERROR) {
-        if (err == NO_ERROR) {
-            width  = w;
-            height = h;
-        }
-    }
-
-    return err;
-}
-
-status_t Buffer::lock(GGLSurface* sur, uint32_t usage) 
-{
-    void* vaddr;
-    status_t res = SurfaceBuffer::lock(usage, &vaddr);
-    if (res == NO_ERROR && sur) {
-        sur->version = sizeof(GGLSurface);
-        sur->width = width;
-        sur->height = height;
-        sur->stride = stride;
-        sur->format = format;
-        sur->data = static_cast<GGLubyte*>(vaddr);
-    }
-    return res;
-}
-
-
-void Buffer::setPixel(int x, int y, int r, int g, int b, int a) {
-    if (x < 0 || (unsigned int) x >= width
-            || y < 0 || (unsigned int) y >= height) {
-        // clipped
-        return;
-    }
-    int index = stride * y + x;
-    switch (format) {
-    case HAL_PIXEL_FORMAT_RGB_565: {
-            unsigned short val = (unsigned short) (
-                    ((0x1f & (r >> 3)) << 11)
-                    | ((0x3f & (g >> 2)) << 5)
-                    | (0x1f & (b >> 3)));
-            ((unsigned short*) mData)[index]= val;
-        }
-        break;
-    case HAL_PIXEL_FORMAT_RGBA_8888: { // ABGR
-        unsigned int val = (unsigned int)
-            (((a & 0xff) << 24)
-                    | ((b & 0xff) << 16)
-                    | ((g & 0xff) << 8)
-                    | (r & 0xff));
-            ((unsigned int*) mData)[index] = val;
-        }
-        break;
-    default:
-        // Unsupported pixel format
-        break;
-    }
-}
-
-
-static void gluLookAt(float eyeX, float eyeY, float eyeZ,
-        float centerX, float centerY, float centerZ, float upX, float upY,
-        float upZ)
-{
-    // See the OpenGL GLUT documentation for gluLookAt for a description
-    // of the algorithm. We implement it in a straightforward way:
-
-    float fx = centerX - eyeX;
-    float fy = centerY - eyeY;
-    float fz = centerZ - eyeZ;
-
-    // Normalize f
-    float rlf = 1.0f / sqrtf(fx*fx + fy*fy + fz*fz);
-    fx *= rlf;
-    fy *= rlf;
-    fz *= rlf;
-
-    // Normalize up
-    float rlup = 1.0f / sqrtf(upX*upX + upY*upY + upZ*upZ);
-    upX *= rlup;
-    upY *= rlup;
-    upZ *= rlup;
-
-    // compute s = f x up (x means "cross product")
-
-    float sx = fy * upZ - fz * upY;
-    float sy = fz * upX - fx * upZ;
-    float sz = fx * upY - fy * upX;
-
-    // compute u = s x f
-    float ux = sy * fz - sz * fy;
-    float uy = sz * fx - sx * fz;
-    float uz = sx * fy - sy * fx;
-
-    float m[16] ;
-    m[0] = sx;
-    m[1] = ux;
-    m[2] = -fx;
-    m[3] = 0.0f;
-
-    m[4] = sy;
-    m[5] = uy;
-    m[6] = -fy;
-    m[7] = 0.0f;
-
-    m[8] = sz;
-    m[9] = uz;
-    m[10] = -fz;
-    m[11] = 0.0f;
-
-    m[12] = 0.0f;
-    m[13] = 0.0f;
-    m[14] = 0.0f;
-    m[15] = 1.0f;
-
-    glMultMatrixf(m);
-    glTranslatef(-eyeX, -eyeY, -eyeZ);
-}
-
-int init_gralloc() {
-    int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &gralloc_module);
-    LOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
-
-    if (err == 0) {
-        gralloc_open(gralloc_module, &sAllocDev);
-    }
-    return err;
-}
-
-int init_gl_surface(void)
-{
-    EGLint numConfigs = 1;
-    EGLConfig myConfig = {0};
-    EGLint attrib[] =
-    {
-            EGL_DEPTH_SIZE,     16,
-            EGL_NONE
-    };
-
-    EGLNativeWindowType window = android_createDisplaySurface();
-
-    printf("init_gl_surface\n");
-    if ( (eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY)) == EGL_NO_DISPLAY )
-    {
-        printf("eglGetDisplay failed\n");
-        return 0;
-    }
-
-    if ( eglInitialize(eglDisplay, NULL, NULL) != EGL_TRUE )
-    {
-        printf("eglInitialize failed\n");
-        return 0;
-    }
-
-    if ( EGLUtils::selectConfigForNativeWindow(eglDisplay, attrib, window, &myConfig) != 0)
-    {
-        printf("EGLUtils::selectConfigForNativeWindow failed\n");
-        return 0;
-    }
-        
-
-    if ( (eglSurface = eglCreateWindowSurface(eglDisplay, myConfig,
-            window, 0)) == EGL_NO_SURFACE )
-    {
-        printf("eglCreateWindowSurface failed\n");
-        return 0;
-    }
-
-    if ( (eglContext = eglCreateContext(eglDisplay, myConfig, 0, 0)) == EGL_NO_CONTEXT )
-    {
-        printf("eglCreateContext failed\n");
-        return 0;
-    }
-
-    if ( eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext) != EGL_TRUE )
-    {
-        printf("eglMakeCurrent failed\n");
-        return 0;
-    }
-
-#if EGL_ANDROID_swap_rectangle
-    eglSetSwapRectangleANDROID(eglDisplay, eglSurface, 0, 0, 320, 480);
-#endif
-    
-    return 1;
-}
-
-void free_gl_surface(void)
-{
-    if (eglDisplay != EGL_NO_DISPLAY)
-    {
-        eglMakeCurrent( eglDisplay, EGL_NO_SURFACE,
-                EGL_NO_SURFACE, EGL_NO_CONTEXT );
-        eglDestroyContext( eglDisplay, eglContext );
-        eglDestroySurface( eglDisplay, eglSurface );
-        eglTerminate( eglDisplay );
-        eglDisplay = EGL_NO_DISPLAY;
-    }
-}
-
-void init_scene(void)
-{
-    glDisable(GL_DITHER);
-    glEnable(GL_CULL_FACE);
-    float ratio = 320.0f /  480.0f;
-    glViewport(0, 0, 320, 480);
-
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-    glFrustumf(-ratio, ratio, -1, 1, 1, 10);
-
-    glMatrixMode(GL_MODELVIEW);
-
-    glLoadIdentity();
-    gluLookAt(
-            0, 0, 3,  // eye
-            0, 0, 0,  // center
-            0, 1, 0); // up
-
-    glEnable(GL_TEXTURE_2D);
-}
-
-// #define USE_ALPHA_COLOR
-
-#define USE_GL_REPLACE
-//#define USE_GL_MODULATE
-
-// #define USE_BLEND
-
-#define USE_565
-// #define USE_8888
-
-// #define USE_NEAREST
-#define USE_LINEAR
-
-#define USE_SCALE
-
-void setSmoothGradient(Buffer* bufferObject) {
-    int pixels = bufferObject->getHeight() * bufferObject->getWidth();
-    int step = 0;
-    for (unsigned int y = 0; y < bufferObject->getHeight(); y++) {
-        for(unsigned int x = 0; x < bufferObject->getWidth() ; x++) {
-            int grey = step * 255 / pixels;
-            bufferObject->setPixel(x, y, grey, grey, grey, 255);
-            ++step;
-        }
-    }
-}
-
-void setSmoothAlphaGradient(Buffer* bufferObject) {
-    int pixels = bufferObject->getHeight() * bufferObject->getWidth();
-    int step = 0;
-    for (unsigned int y = 0; y < bufferObject->getHeight(); y++) {
-        for(unsigned int x = 0; x < bufferObject->getWidth() ; x++) {
-            int grey = step * 255 / pixels;
-            bufferObject->setPixel(x, y, 255, 255, 255, grey);
-            ++step;
-        }
-    }
-}
-
-void setOrientedCheckerboard(Buffer* bufferObject) {
-    bufferObject->setPixel(0, 0, 0, 0, 0, 255);
-    for(unsigned int x = 1; x < bufferObject->getWidth() ; x++) {
-        bufferObject->setPixel(x, 0, 0, 255, 0, 255);
-    }
-    for (unsigned int y = 1; y < bufferObject->getHeight(); y++) {
-        for(unsigned int x = 0; x < bufferObject->getWidth() ; x++) {
-            if ((x ^ y ) & 1) {
-                bufferObject->setPixel(x, y, 255, 255, 255, 255);
-            } else {
-                bufferObject->setPixel(x, y, 255, 0, 0, 255);
-            }
-        }
-    }
-}
-
-int create_physical_texture(unsigned int w, unsigned int h)
-{
-
-#ifdef USE_565
-    PixelFormat format = HAL_PIXEL_FORMAT_RGB_565;
-#else
-    PixelFormat format = HAL_PIXEL_FORMAT_RGBA_8888;
-#endif
-    int usage = GRALLOC_USAGE_SW_READ_OFTEN |
-        GRALLOC_USAGE_SW_WRITE_OFTEN |
-        GRALLOC_USAGE_HW_TEXTURE |
-        GRALLOC_USAGE_HW_2D; /* This is the key to allocating the texture in pmem. */
-    int32_t stride;
-    buffer_handle_t handle;
-
-    // Allocate the hardware buffer
-    Buffer* bufferObject = new Buffer(w, h, format, usage);
-
-    android_native_buffer_t* buffer = bufferObject->getNativeBuffer();
-
-    buffer->common.incRef(&buffer->common);
-
-    // create the new EGLImageKHR
-    EGLint attrs[] = { EGL_IMAGE_PRESERVED_KHR, EGL_NONE };
-    EGLDisplay dpy = eglGetCurrentDisplay();
-    EGLImageKHR image = eglCreateImageKHR(dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
-            (EGLClientBuffer)buffer, attrs);
-    if (image == EGL_NO_IMAGE_KHR) {
-        printf("Could not create an image %d\n", eglGetError());
-        return -1;
-    }
-
-    bufferObject->lock();
-    setOrientedCheckerboard(bufferObject);
-    // setSmoothGradient(bufferObject);
-    // setSmoothAlphaGradient(bufferObject);
-    bufferObject->unlock();
-
-    glGenTextures(1, &texture);
-    glBindTexture(GL_TEXTURE_2D, texture);
-    glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, image);
-#ifdef USE_LINEAR
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-#elif defined(USE_NEAREST)
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-#endif
-
-#ifdef USE_GL_REPLACE
-    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-#elif defined(USE_GL_MODULATE)
-    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-#endif
-
-#ifdef USE_ALPHA_COLOR
-    glColor4f(1.0f, 1.0f, 1.0f, 0.4f);
-#else
-    glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
-#endif
-
-#ifdef USE_BLEND
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-#endif
-    return 0;
-}
-
-static const int SCALE_COUNT = 12;
-
-int scale(int base, int factor) {
-    static const float kTable[SCALE_COUNT] = {
-            0.24f, 0.25f, 0.5f, 0.75f, 1.0f,
-            1.5f, 2.0f, 2.5f, 3.0f, 3.5f, 4.0f, 5.0f
-    };
-    return base * kTable[factor];
-}
-
-class Timer {
-    struct timeval  first;
-    double elapsedSeconds;
-
-public:
-    Timer() {}
-    void start() {
-        gettimeofday(&first, NULL);
-    }
-
-    void stop() {
-        struct timeval  second,
-                        elapsed;
-        gettimeofday(&second, NULL);
-
-        if (first.tv_usec > second.tv_usec) {
-           second.tv_usec += 1000000;
-           second.tv_sec--;
-        }
-
-        elapsedSeconds = (second.tv_sec  - first.tv_sec) +
-            (second.tv_usec - first.tv_usec) / 1000000.0;
-    }
-
-    double getElapsedSeconds() {
-        return elapsedSeconds;
-    }
-
-    double getElapsedMs() {
-        return elapsedSeconds* 1000.0f;
-    }
-};
-
-int testTime()
-{
-    static const int WIDTH = 320;
-    static const int HEIGHT = 480;
-    static const int SCALE = 8;
-
-    if (create_physical_texture(WIDTH, HEIGHT) != 0) {
-        return -1;
-    }
-    // Need to do a dummy eglSwapBuffers first. Don't know why.
-    glClearColor(0.4, 1.0, 0.4, 0.4);
-    glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-    eglSwapBuffers(eglDisplay, eglSurface);
-
-    glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-
-#if defined(USE_SCALE)
-    static const int scaleOffset = 0;
-#else
-    static const int scaleOffset = 1;
-#endif
-    printf("ms\n");
-    for(int j = 0; j < SCALE; j++) {
-        int w = WIDTH >> (j + scaleOffset);
-        int h = HEIGHT >> j;
-        int cropRect[4] = {0,h,w,-h}; // Left bottom width height. Width and Height can be neg to flip.
-        glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, cropRect);
-        Timer timer;
-        timer.start();
-
-        int copyCount = 1000;
-        for (int i = 0; i < copyCount; i++) {
-            glDrawTexiOES(0, 0, 0, w, h);
-        }
-
-        timer.stop();
-        printf("%g\n", timer.getElapsedMs() / copyCount);
-    }
-
-    eglSwapBuffers(eglDisplay, eglSurface);
-    return 0;
-}
-
-int testStretch()
-{
-    static const int WIDTH = 8;
-    static const int HEIGHT = 8;
-
-    if (create_physical_texture(WIDTH, HEIGHT) != 0) {
-        return -1;
-    }
-    // Need to do a dummy eglSwapBuffers first. Don't know why.
-    glClearColor(0.4, 1.0, 0.4, 1.0);
-    glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-    eglSwapBuffers(eglDisplay, eglSurface);
-    
-    int cropRect[4] = {0,HEIGHT,WIDTH,-HEIGHT}; // Left bottom width height. Width and Height can be neg to flip.
-    glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, cropRect);
-
-    for(int frame = 0; frame < 2; frame++) {
-        glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-        int baseX = 10;
-        for (int x = 0; x < SCALE_COUNT; x++) {
-            int baseY = 10;
-            int width = scale(WIDTH, x);
-            for (int y = 0; y < SCALE_COUNT; y++) {
-                int height = scale(HEIGHT, y);
-                glDrawTexxOES(baseX << 16, baseY << 16, 0, width << 16, height << 16);
-                baseY += height + 10;
-            }
-            baseX += width + 10;
-        }
-
-        eglSwapBuffers(eglDisplay, eglSurface);
-        LOGD("wait 1s");
-        usleep(1000000);
-    }
-    return 0;
-}
-
-int testRot90()
-{
-    static const int WIDTH = 8;
-    static const int HEIGHT = 8;
-
-    if (create_physical_texture(WIDTH, HEIGHT) != 0) {
-        return -1;
-    }
-
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-    glOrthof(0, 320, 480, 0, 0, 1);
-
-    glMatrixMode(GL_MODELVIEW);
-
-    glLoadIdentity();
-
-    // Need to do a dummy eglSwapBuffers first. Don't know why.
-    glClearColor(0.4, 0.4, 0.4, 0.4);
-    glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-    eglSwapBuffers(eglDisplay, eglSurface);
-
-    glEnable(GL_TEXTURE_2D);
-    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glColor4x(0x10000, 0x10000, 0x10000, 0x10000);
-    glDisable(GL_BLEND);
-    glShadeModel(GL_FLAT);
-    glDisable(GL_DITHER);
-    glDisable(GL_CULL_FACE);
-
-    for(int frame = 0; frame < 2; frame++) {
-        LOGD("frame = %d", frame);
-        glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
-        int baseX = 10;
-        for (int x = 0; x < SCALE_COUNT; x++) {
-            int baseY = 10;
-            int width = scale(WIDTH, x);
-            for (int y = 0; y < SCALE_COUNT; y++) {
-                int height = scale(HEIGHT, y);
-
-                // Code copied from SurfaceFlinger LayerBase.cpp
-
-                const GLfixed texCoords[4][2] = {
-                        { 0,        0 },
-                        { 0,        0x10000 },
-                        { 0x10000,  0x10000 },
-                        { 0x10000,  0 }
-                };
-
-                GLfixed fx = baseX << 16;
-                GLfixed fy = baseY << 16;
-                GLfixed fw = width << 16;
-                GLfixed fh = height << 16;
-
-                /*
-                 * Vertex pattern:
-                 *    (2)--(3)
-                 *     |\   |
-                 *     | \  |
-                 *     |  \ |
-                 *     |   \|
-                 *    (1)--(0)
-                 *
-                 */
-
-                const GLfixed vertices[4][2] = {
-                        {fx + fw, fy},
-                        {fx,      fy},
-                        {fx,      fy + fh},
-                        {fx + fw, fy + fh}
-                };
-
-                static const bool rotate90 = true;
-
-                glMatrixMode(GL_TEXTURE);
-                glLoadIdentity();
-
-                glEnableClientState(GL_VERTEX_ARRAY);
-                glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-                glVertexPointer(2, GL_FIXED, 0, vertices);
-                glTexCoordPointer(2, GL_FIXED, 0, texCoords);
-
-                LOGD("testRot90 %d, %d %d, %d", baseX, baseY, width, height);
-                glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-                baseY += height + 10;
-            }
-            baseX += width + 10;
-        }
-
-        eglSwapBuffers(eglDisplay, eglSurface);
-    }
-    return 0;
-}
-
-int main(int argc, char **argv)
-{
-
-    int q;
-    int start, end;
-
-    if (init_gralloc()) {
-        printf("gralloc initialization failed - exiting\n");
-        return 0;
-    }
-
-    printf("Initializing EGL...\n");
-
-    if(!init_gl_surface())
-    {
-        printf("GL initialisation failed - exiting\n");
-        return 0;
-    }
-
-    init_scene();
-
-    printf("Start test...\n");
-    // testTime();
-     testStretch();
-    //testRot90();
-    free_gl_surface();
-
-    return 0;
-}