opengl相关函数

void glGenBuffers( GLsizei n, GLuint * buffers)

产生buffers名称

变量	意义
n	生成buffers的个数
buffers	生成n个buffers的name

void glBindBuffer( GLenum target, GLuint buffer)

设定buffer的类别

变量	意义
target	绑定的buffer类别
buffer	绑定的buffer

target类别	解释
GL_ARRAY_BUFFER	Vertex attributes
GL_ATOMIC_COUNTER_BUFFER	Atomic counter storage
GL_COPY_READ_BUFFER	Buffer copy source
GL_COPY_WRITE_BUFFER	Buffer copy destination
GL_DISPATCH_INDIRECT_BUFFER	Indirect compute dispatch commands
GL_DRAW_INDIRECT_BUFFER	Indirect command arguments
GL_ELEMENT_ARRAY_BUFFER	Vertex array indices
GL_PIXEL_PACK_BUFFER	Pixel read target
GL_PIXEL_UNPACK_BUFFER	Texture data source
GL_QUERY_BUFFER	Query result buffer
GL_SHADER_STORAGE_BUFFER	Read-write storage for shaders
GL_TEXTURE_BUFFER	Texture data buffer
GL_TRANSFORM_FEEDBACK_BUFFER	Transform feedback buffer
GL_UNIFORM_BUFFER	Uniform block storage

void glBufferData( GLenum target,GLsizeiptr size,const GLvoid * data,GLenum usage)

创建并初始化buffer的存储空间

变量	意义
target	制定绑定对象的类型，解释见上
size	数据所需空间大小
data	初始化buffer的数据，没有为空
usage	指定buffer的预期使用模式，可能会影响对buffer使用的性能，主要表现在频率和性能，常用的有：GL_STREAM_DRAW, GL_STREAM_READ, GL_STREAM_COPY, GL_STATIC_DRAW, GL_STATIC_READ, GL_STATIC_COPY, GL_DYNAMIC_DRAW, GL_DYNAMIC_READ, or GL_DYNAMIC_COPY

usage	意义
STREAM	The data store contents will be modified once and used at most a few times.
STATIC	The data store contents will be modified once and used many times.
DYNAMIC	The data store contents will be modified repeatedly and used many times.
DRAW	The data store contents are modified by the application, and used as the source for GL drawing and image specification commands.
READ	The data store contents are modified by reading data from the GL, and used to return that data when queried by the application.
COPY	The data store contents are modified by reading data from the GL, and used as the source for GL drawing and image specification commands.

void glDeleteBuffers( GLsizei n,const GLuint * buffers)

删除buffers

变量	意义
n	生成buffers的个数
buffers	生成n个buffers的name

参考链接:https://www.khronos.org/registry/OpenGL-Refpages/gl4/