cv::Mat mati420 = cv::Mat(pImage->height * 3 / 2, pImage->width, CV_8UC1, pImage->ppPlane[0]);
cv::Mat matRgba = cv::Mat(m_SrcImage.height, m_SrcImage.width, CV_8UC4, m_SrcImage.ppPlane[0]);
cv::cvtColor(mati420, matRgba, CV_YUV2RGBA_I420);

#version 300 es
layout(location = 0) in vec4 a_position;
layout(location = 1) in vec2 a_texCoord;
uniform mat4 u_MVPMatrix;
out vec2 v_texCoord;
void main()
{
gl_Position = u_MVPMatrix * a_position;
v_texCoord = a_texCoord;
}

#version 300 es
precision mediump float;
in vec2 v_texCoord;
layout(location = 0) out vec4 outColor;
uniform sampler2D u_texture;

void main()
{
    outColor = texture(u_texture, v_texCoord);
}

memcpy(m_RenderImage.ppPlane[0], m_SrcImage.ppPlane[0], m_RenderImage.width * m_RenderImage.height * 4 / 2); //左側(cè)預(yù)覽區(qū)域像素拷貝

int bannerHeight = m_RenderImage.height / 2 / m_bannerNum;//一個(gè) banner 的高(小豎條)
int bannerPixelsBufSize = m_RenderImage.width * bannerHeight * 4;//一個(gè) banner 占用的圖像內(nèi)存

uint8 *pBuf = m_RenderImage.ppPlane[0] + m_RenderImage.width * m_RenderImage.height * 4 / 2; //傳送帶分界線

//從最右側(cè)的豎條圖像區(qū)域開(kāi)始拷貝圖像
for (int i = m_bannerNum - 1; i >= 1; --i) {
    memcpy(pBuf + i*bannerPixelsBufSize, pBuf + (i - 1)*bannerPixelsBufSize, bannerPixelsBufSize);
}

//將來(lái)源區(qū)域的像素拷貝到豎條圖像區(qū)域 0
memcpy(pBuf, pBuf - bannerPixelsBufSize, bannerPixelsBufSize);

glUseProgram (m_ProgramObj);

glBindVertexArray(m_VaoId);

glUniformMatrix4fv(m_MVPMatLoc, 1, GL_FALSE, &m_MVPMatrix[0][0]);

//圖像拷貝，傳送帶拷貝
memcpy(m_RenderImage.ppPlane[0], m_SrcImage.ppPlane[0], m_RenderImage.width * m_RenderImage.height * 4 / 2);
int bannerHeight = m_RenderImage.height / 2 / m_bannerNum;
int bannerPixelsBufSize = m_RenderImage.width * bannerHeight * 4;

uint8 *pBuf = m_RenderImage.ppPlane[0] + m_RenderImage.width * m_RenderImage.height * 4 / 2; //傳送帶分界線

for (int i = m_bannerNum - 1; i >= 1; --i) {
    memcpy(pBuf + i*bannerPixelsBufSize, pBuf + (i - 1)*bannerPixelsBufSize, bannerPixelsBufSize);
}
memcpy(pBuf, pBuf - bannerPixelsBufSize, bannerPixelsBufSize);

//更新紋理
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_TextureId);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, m_RenderImage.width, m_RenderImage.height, 0, GL_RGBA, GL_UNSIGNED_BYTE, m_RenderImage.ppPlane[0]);
glBindTexture(GL_TEXTURE_2D, GL_NONE);

glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_TextureId);
GLUtils::setInt(m_ProgramObj, "u_texture", 0);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, (const void *)0);
glBindVertexArray(GL_NONE);