更新：

这是我的onPreviewFrame方法：

public void onPreviewFrame(byte[] data,Camera camera) {
    yBuffer.put(data);
    yBuffer.position(0);
 
    System.arraycopy(data,U_INDEX,uData,LENGTH_4 * 2);
    uBuffer.put(uData);
    uBuffer.position(0);
 
    System.arraycopy(data,V_INDEX,vData,LENGTH_4);
    vBuffer.put(vData);
    vBuffer.position(0);
}

这是我在onDrawFrame方法中将字节数组绑定到OpenGL纹理的方法：

GLES20.glUniform1i(yTexture,1);
    GLES20.glTexImage2D(   GLES20.GL_TEXTURE_2D,GLES20.GL_LUMINANCE,320,240,GLES20.GL_UNSIGNED_BYTE,yBuffer);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,GLES20.GL_TEXTURE_MIN_FILTER,GLES20.GL_LINEAR);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,GLES20.GL_TEXTURE_MAG_FILTER,GLES20.GL_LINEAR);
 
    GLES20.glUniform1i(uTexture,2);
    GLES20.glTexImage2D(   GLES20.GL_TEXTURE_2D,160,120,uBuffer);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,GLES20.GL_LINEAR);
 
    GLES20.glUniform1i(vTexture,3);
    GLES20.glTexImage2D(   GLES20.GL_TEXTURE_2D,vBuffer);
    GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D,GLES20.GL_LINEAR);

这是我的片段着色器代码：

#ifdef GL_ES
precision highp float;
#endif
 
varying vec2 v_texCoord;
uniform sampler2D y_texture;
uniform sampler2D u_texture;
uniform sampler2D v_texture;
 
void main()
{   
    float nx,ny,r,g,b,y,u,v;
    nx=v_texCoord.x;
    ny=v_texCoord.y;
    y=texture2D(y_texture,v_texCoord).r;
    u=texture2D(u_texture,v_texCoord).r;
    v=texture2D(v_texture,v_texCoord).r;
 
    y=1.1643*(y-0.0625);
    u=u-0.5;
    v=v-0.5;
 
    r=y+1.5958*v;
    g=y-0.39173*u-0.81290*v;
    b=y+2.017*u;
 
    gl_FragColor = vec4(r,1.0);
}