Name
glBufferData, glNamedBufferData — creates and initializes a buffer object’s data store
C Specification
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void glBufferData( GLenum target,
GLsizeiptr size,
const void * data,
GLenum usage);
void glNamedBufferData( GLuint buffer,
GLsizeiptr size,
const void *data,
GLenum usage);
Parameters
target
Specifies the target to which the buffer object is bound for glBufferData, which must be one of the buffer binding targets in the following table:
| Buffer Binding Target | Purpose |
|---|---|
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 |
buffer
Specifies the name of the buffer object for glNamedBufferData function.
size
Specifies the size in bytes of the buffer object’s new data store.
data
Specifies a pointer to data that will be copied into the data store for initialization, or NULL if no data is to be copied.
usage
Specifies the expected usage pattern of the data store. The symbolic constant must be 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.
Description
glBufferData and glNamedBufferData create a new data store for a buffer object. In case of glBufferData, the buffer object currently bound to target is used. For glNamedBufferData, a buffer object associated with ID specified by the caller in buffer will be used instead.