openGL之API学习（六十）glTransformFeedbackVaryings

配置要从着色器中输出的变量

void glTransformFeedbackVaryings(     GLuint program,
      GLsizei count,
      const char **varyings,
      GLenum bufferMode);
 
Parameters

program

    The name of the target program object.

着色器程序对象
count

    The number of varying variables used for transform feedback.

变量的总数
varyings

    An array of count zero-terminated strings specifying the names of the varying variables to use for transform feedback.

变量名的数组
bufferMode

    Identifies the mode used to capture the varying variables when transform feedback is active. bufferMode must be GL_INTERLEAVED_ATTRIBS or GL_SEPARATE_ATTRIBS.

捕获变量的模式，可以是分量模式(GL_SEPARATE_ATTRIBS，写入多个缓冲区对象)或交叉模式(GL_INTERLEAVED_ATTRIBS，写入单个缓冲区对象)