scop/glew-2.2.0/auto/extensions/gl/GL_ARB_map_buffer_range

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GL_ARB_map_buffer_range
https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_map_buffer_range.txt
GL_ARB_map_buffer_range
GL_MAP_READ_BIT 0x0001
GL_MAP_WRITE_BIT 0x0002
GL_MAP_INVALIDATE_RANGE_BIT 0x0004
GL_MAP_INVALIDATE_BUFFER_BIT 0x0008
GL_MAP_FLUSH_EXPLICIT_BIT 0x0010
GL_MAP_UNSYNCHRONIZED_BIT 0x0020
void glFlushMappedBufferRange (GLenum target, GLintptr offset, GLsizeiptr length)
void * glMapBufferRange (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access)