不能图在真实设备上使用OpenGL ES纹理

我试过一个简单的程序，动态生成纹理并将其映射到使用NDK四。一切都很好在模拟器上，但未能在真实设备上。
这里是我的code：

I've tried a simple program that dynamically generates a texture and map it to a quad using NDK. Everything is fine on an emulator but failed on real devices. Here is my code:

private static class Renderer implements GLSurfaceView.Renderer
{
    @Override
    public void onDrawFrame(GL10 gl)
    {
        nativeDrawFrame();
    }

    @Override
    public void onSurfaceChanged(GL10 gl, int width, int height)
    {
        nativeInit(width, height);
    }

    @Override
    public void onSurfaceCreated(GL10 gl, EGLConfig config)
    {
        // do nothing...
    }
}

和本土code：

const static GLfloat vertices_f[4][2] = 
{
    { 0.0f,    0.0f },
    { 100.0f,    0.0f },
    { 100.0f,    100.0f },
    { 0.0f,    100.0f }
};

const static GLfloat texCoords_f[4][2] = 
{
    { 0.0f,    0.0f },
    { 1.0f,    0.0f },
    { 1.0f,    1.0f },
    { 0.0f,    1.0f }
};

JNIEXPORT void JNICALL Java_com_sangfor_gltest_GLView_nativeInit(JNIEnv * env, jobject obj, jint width, jint height)
{
    if (!bitmap)
    {
        // allocate dynamic texture memory
        bitmap = memalign(16, 1024*1024);
        if (!bitmap)
        {
            __android_log_print(ANDROID_LOG_ERROR, "native-render", "failed allocation.");
            return;
        }
    }

    glViewport(0, 0, width, height);
    //glMatrixMode(GL_PROJECTION);
    //glLoadIdentity();
    //glOrthox(0, 0x10000, 0, 0x10000, 0x10000, -0x10000);
    //glClearColorx(0, 0, 0, 0);
    glGenTextures(1, &texture);
    __android_log_print(ANDROID_LOG_INFO, "native-render", "texture = %d", texture);
    // glVertexPointer(2, GL_FIXED, 0, vertices);
    // glTexCoordPointer(2, GL_FIXED, 0, texCoords);
    //glEnableClientState(GL_COLOR_ARRAY);
    glColor4x(0x10000, 0x10000, 0x10000, 0x10000);
    glEnable(GL_TEXTURE_2D);
    glDisable(GL_BLEND);
    glDisable(GL_ALPHA_TEST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}

JNIEXPORT void JNICALL Java_com_sangfor_gltest_GLView_nativeDrawFrame(JNIEnv * env, jobject obj)
{
    struct timeval tv;
    unsigned char color_value;

    glClear(GL_COLOR_BUFFER_BIT);

    // fill texture according to current timestamp
    gettimeofday(&tv, NULL);
    color_value = (unsigned char)(tv.tv_usec * 0.000255f);
    memset(bitmap, color_value, 1024*1024);
    __android_log_print(ANDROID_LOG_INFO, "native-render", "color_value = %d", color_value);

    glBindTexture(GL_TEXTURE_2D, texture);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 256, 256, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, bitmap);

    glBindTexture(GL_TEXTURE_2D, texture);
    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
    glEnableClientState(GL_VERTEX_ARRAY);

    glTexCoordPointer(2, GL_FLOAT, 0, texCoords_f);
    glVertexPointer(2, GL_FLOAT, 0, vertices_f);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
    glFlush();
}

在一个模拟器它只是工作如我所料：屏幕上的一个区域不断变化的颜色。
然而，当我在真实设备（三星Galaxy S 2.3.3和华硕TF101变压器3.2.1）运行它，它只是显示一个白色块和纹理映射似乎不工作。

On an emulator it just works as I expected: an area on the screen keeps changing its color. However, when I run it on real devices (Samsung Galaxy S 2.3.3 and Asus Transformer TF101 3.2.1), it just show a white block and texture mapping seems not working.

我尝试添加和注释掉投影变换，通过调用使纹理映射过glEnable（GL_TEXTURE_2D），通过调用禁用alpha混合，并测试 glDisable（ ...），移动 glBindTexture 和 glTexImage2D 来初始化函数，改变纹理尺寸为32×32，但没有这些工作。

I tried add and comment out projection transform, enable texture mapping by calling glEnable(GL_TEXTURE_2D), disable alpha blending and testing by calling glDisable(...), move glBindTexture and glTexImage2D to init function, change texture size to 32 x 32 but none of these work.

谁能帮我弄清楚为什么纹理贴图失败，只是在真实设备？是否有一个GPU的限制还是什么？

Can anyone help me figure out why texture mapping fails just on real devices? Is there a GPU limitation or something?

编辑：我试过勺的建议，并找到了真正的问题。不管我绑定的纹理，该器件采用纹理命名的 0 的渲染四边形，所以 glBindTexture（GL_TEXTURE_2D，0）工作正常，但 glBindTexture（GL_TEXTURE_2D，1）和 glGenTextures（...）返回任何失败。这意味着我可以只保存一个纹理，但我必须使用2个或更多。

I've tried Spoon's suggestion and found the real problem. No matter which texture I bind, the device uses texture named 0 to render quads, so glBindTexture(GL_TEXTURE_2D, 0) works fine but glBindTexture(GL_TEXTURE_2D, 1) and anything returned by glGenTextures(...) fails. This means I can save only one texture, but I have to use 2 or more.