Other Alias
glClearBufferDataC SPECIFICATION
-
void glClearBufferData(GLenum target, GLenum internalformat, GLenum format, GLenum type, const void * data);
- void glClearNamedBufferData(GLuint buffer, GLenum internalformat, GLenum format, GLenum type, const void *data);
PARAMETERS
target
-
- Specifies the target to which the buffer object is bound for glClearBufferData, which must 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 - Specifies the target to which the buffer object is bound for glClearBufferData, which must must be one of the buffer binding targets in the following table:
buffer
- Specifies the name of the buffer object for glClearNamedBufferData.
internalformat
- The internal format with which the data will be stored in the buffer object.
format
- The format of the data in memory addressed by data.
type
- The type of the data in memory addressed by data.
data
- The address of a memory location storing the data to be replicated into the buffer's data store.
DESCRIPTION
glClearBufferData and glClearNamedBufferData fill the entirety of a buffer object's data store with data from client memory.
Data, initially supplied in a format specified by format in data type type is read from the memory address given by data and converted into the internal representation given by internalformat, which must be one of the following sized internal formats:
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Component
| |||||||
| Sized Internal Format | Base Type | Components | Norm | 0 | 1 | 2 |
3
|
| GL_R8 | ubyte | 1 | YES | R | 0 | 0 |
1
|
| GL_R16 | ushort | 1 | YES | R | 0 | 0 |
1
|
| GL_R16F | half | 1 | NO | R | 0 | 0 |
1
|
| GL_R32F | float | 1 | NO | R | 0 | 0 |
1
|
| GL_R8I | byte | 1 | NO | R | 0 | 0 |
1
|
| GL_R16I | short | 1 | NO | R | 0 | 0 |
1
|
| GL_R32I | int | 1 | NO | R | 0 | 0 |
1
|
| GL_R8UI | ubyte | 1 | NO | R | 0 | 0 |
1
|
| GL_R16UI | ushort | 1 | NO | R | 0 | 0 |
1
|
| GL_R32UI | uint | 1 | NO | R | 0 | 0 |
1
|
| GL_RG8 | ubyte | 2 | YES | R | G | 0 |
1
|
| GL_RG16 | ushort | 2 | YES | R | G | 0 |
1
|
| GL_RG16F | half | 2 | NO | R | G | 0 |
1
|
| GL_RG32F | float | 2 | NO | R | G | 0 |
1
|
| GL_RG8I | byte | 2 | NO | R | G | 0 |
1
|
| GL_RG16I | short | 2 | NO | R | G | 0 |
1
|
| GL_RG32I | int | 2 | NO | R | G | 0 |
1
|
| GL_RG8UI | ubyte | 2 | NO | R | G | 0 |
1
|
| GL_RG16UI | ushort | 2 | NO | R | G | 0 |
1
|
| GL_RG32UI | uint | 2 | NO | R | G | 0 |
1
|
| GL_RGB32F | float | 3 | NO | R | G | B |
1
|
| GL_RGB32I | int | 3 | NO | R | G | B |
1
|
| GL_RGB32UI | uint | 3 | NO | R | G | B |
1
|
| GL_RGBA8 | uint | 4 | YES | R | G | B |
A
|
| GL_RGBA16 | short | 4 | YES | R | G | B |
A
|
| GL_RGBA16F | half | 4 | NO | R | G | B |
A
|
| GL_RGBA32F | float | 4 | NO | R | G | B |
A
|
| GL_RGBA8I | byte | 4 | NO | R | G | B |
A
|
| GL_RGBA16I | short | 4 | NO | R | G | B |
A
|
| GL_RGBA32I | int | 4 | NO | R | G | B |
A
|
| GL_RGBA8UI | ubyte | 4 | NO | R | G | B |
A
|
| GL_RGBA16UI | ushort | 4 | NO | R | G | B |
A
|
| GL_RGBA32UI | uint | 4 | NO | R | G | B |
A
|
This converted data is then replicated throughout the buffer object's data store. If data is NULL, then the buffer's data store is filled with zeros.
ERRORS
GL_INVALID_ENUM is generated by glClearBufferData if target is not one of the generic buffer binding targets.
GL_INVALID_VALUE is generated by glClearBufferData if no buffer is bound target.
GL_INVALID_OPERATION is generated by glClearNamedBufferData if buffer is not the name of an existing buffer object.
GL_INVALID_ENUM is generated if internalformat is not one of the valid sized internal formats listed in the table above.
GL_INVALID_OPERATION is generated if any part of the specified range of the buffer object is mapped with glMapBufferRange() or glMapBuffer(), unless it was mapped with the GL_MAP_PERSISTENT_BIT bit set in the glMapBufferRangeaccess flags.
GL_INVALID_VALUE is generated if format is not a valid format, or type is not a valid type.
VERSION SUPPORT
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|
OpenGL Version
| |||||||||||
| Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 |
4.5
|
| glClearBufferData | - | - | - | - | - | - | - | - | - | ✔ | ✔ |
✔
|
| glClearNamedBufferData | - | - | - | - | - | - | - | - | - | - | - |
✔
|
COPYRIGHT
Copyright © 2011-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. m[blue]http://opencontent.org/openpub/m[].
COPYRIGHT
Copyright © 2011-2014 Khronos Group