Merge "gl2_yuvtex: use the gralloc-provided stride." into honeycomb-mr1

        GraphicBuffer::USAGE_SW_WRITE_RARELY;

const int yuvTexFormat = HAL_PIXEL_FORMAT_YV12;

const int yuvTexOffsetY = 0;

const int yuvTexStrideY = (yuvTexWidth + 0xf) & ~0xf;

const int yuvTexOffsetV = yuvTexStrideY * yuvTexHeight;

const int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf; 

const int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * yuvTexHeight/2;

const int yuvTexStrideU = yuvTexStrideV;

const bool yuvTexSameUV = false;

static sp<GraphicBuffer> yuvTexBuffer;

static GLuint yuvTex;

    int blockHeight = yuvTexHeight > 16 ? yuvTexHeight / 16 : 1;

    yuvTexBuffer = new GraphicBuffer(yuvTexWidth, yuvTexHeight, yuvTexFormat,

            yuvTexUsage);

    int yuvTexStrideY = yuvTexBuffer->getStride();

    int yuvTexOffsetV = yuvTexStrideY * yuvTexHeight;

    int yuvTexStrideV = (yuvTexStrideY/2 + 0xf) & ~0xf;

    int yuvTexOffsetU = yuvTexOffsetV + yuvTexStrideV * yuvTexHeight/2;

    int yuvTexStrideU = yuvTexStrideV;

    char* buf = NULL;

    status_t err = yuvTexBuffer->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&buf));

    if (err != 0) {