GLFLUSHMAPPEDBUFFERR - Online Linux Manual PageSection : 3G
Updated : 01/20/2022
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NAMEglFlushMappedBufferRange, glFlushMappedNamedBufferRange − indicate modifications to a range of a mapped buffer
C SPECIFICATIONvoid glFlushMappedBufferRange(GLenum target, GLintptr offset, GLsizeiptr length); void glFlushMappedNamedBufferRange(GLuint buffer, GLintptr offset, GLsizeiptr length);
PARAMETERStarget Specifies the target to which the buffer object is bound for glFlushMappedBufferRange, 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 glFlushMappedNamedBufferRange. offset Specifies the start of the buffer subrange, in basic machine units. length Specifies the length of the buffer subrange, in basic machine units.
DESCRIPTIONglFlushMappedBufferRange indicates that modifications have been made to a range of a mapped buffer object. The buffer object must previously have been mapped with the GL_MAP_FLUSH_EXPLICIT_BIT flag. offset and length indicate the modified subrange of the mapping, in basic machine units. The specified subrange to flush is relative to the start of the currently mapped range of the buffer. These commands may be called multiple times to indicate distinct subranges of the mapping which require flushing. If a buffer range is mapped with both GL_MAP_PERSISTENT_BIT and GL_MAP_FLUSH_EXPLICIT_BIT set, then these commands may be called to ensure that data written by the client into the flushed region becomes visible to the server. Data written to a coherent store will always become visible to the server after an unspecified period of time.
NOTESThe GL_DISPATCH_INDIRECT_BUFFER and GL_SHADER_STORAGE_BUFFER targets are available only if the GL version is 4.3 or greater. The GL_QUERY_BUFFER target is available only if the GL version is 4.4 or greater.
ERRORSGL_INVALID_ENUM is generated by glFlushMappedBufferRange if target is not one of the buffer binding targets listed above. GL_INVALID_OPERATION is generated by glFlushMappedBufferRange if zero is bound to target. GL_INVALID_OPERATION is generated by glFlushMappedNamedBufferRange if buffer is not the name of an existing buffer object. GL_INVALID_VALUE is generated if offset or length is negative, or if offset + length exceeds the size of the mapping. GL_INVALID_OPERATION is generated if the buffer object is not mapped, or is mapped without the GL_MAP_FLUSH_EXPLICIT_BIT flag.
VERSION SUPPORT OpenGL Version Function / Feature Name 2.0 none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'> 2.1 3.0 3.1 3.2 3.3 4.0 4.1 4.2 4.3 4.4 4.5 glFlushMappedBufferRange − − ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ glFlushMappedNamedBufferRange − − − − − − − − − − − ✔
SEE ALSOglMapBufferRange(), glMapBuffer(), glUnmapBuffer()
COPYRIGHTCopyright © 2010−2014 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. http://opencontent.org/openpub/.
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