ofBufferObjectfile

ofBufferObject::Datastruct

Attributes

id variable

GLuint id

undefined

size variable

GLsizeiptr size

undefined

lastTarget variable

GLenum lastTarget

undefined

Functions

Data ()

Data()

undefined

~Data ()

~Data()

undefined

ofBufferObjectclass

Functions

ofBufferObject ()

ofBufferObject()

allocate ()

void allocate()

creates a buffer without allocating any memory yet glGenBuffers, allocates a GL buffer

void allocate(GLsizeiptr bytes, GLenum usage)

creates a buffer and allocates the required number of bytes glGenBuffers + glNamedBufferData: https://www.opengl.org/sdk/docs/man4/html/glBufferData.xhtml before GL 4.5 emulates glNamedBufferData by binding to last known target for this buffer uploading data to that target and unbinding again

void allocate(GLsizeiptr bytes, const void *data, GLenum usage)

void allocate(const vector< T > &data, GLenum usage)

void allocate(const ofPixels_< T > &data, GLenum usage)

isAllocated ()

bool isAllocated() const

true if allocate was called before

bind ()

void bind(GLenum target) const

glBindBuffer: https://www.opengl.org/sdk/docs/man4/html/glBindBuffer.xhtml

unbind ()

void unbind(GLenum target) const

binds the passed target to buffer 0

bindBase ()

void bindBase(GLenum target, GLuint index) const

glBindBufferBase: https://www.opengl.org/sdk/docs/man4/html/glBindBufferBase.xhtml

unbindBase ()

void unbindBase(GLenum target, GLuint index) const

binds the given target and index to buffer 0

bindRange ()

void bindRange(GLenum target, GLuint index, GLintptr offset, GLsizeiptr size) const

glBindBufferRange: https://www.opengl.org/sdk/docs/man4/html/glBindBufferRange.xhtml

unbindRange ()

void unbindRange(GLenum target, GLuint index) const

binds the given target and index to 0

getId ()

GLuint getId() const

returns the id of the buffer if it's allocated or 0 otherwise

setData ()

void setData(GLsizeiptr bytes, const void *data, GLenum usage)

glNamedBufferData: https://www.opengl.org/sdk/docs/man4/html/glBufferData.xhtml before GL 4.5 emulates glNamedBufferData by binding to last known target for this buffer uploading data to that target and unbinding again

-----—| invariant: direct state access is not available

updateData ()

void updateData(GLintptr offset, GLsizeiptr bytes, const void *data)

glNamedBufferSubData: https://www.opengl.org/sdk/docs/man4/html/glBufferSubData.xhtml before GL 4.5 emulates glNamedBufferSubData by binding to last known target for this buffer uploading data to that target and unbinding again

-----—| invariant: direct state access is not available

setData ()

void setData(const vector< T > &data, GLenum usage)

typed version of setData, same functionality but guesses the size from the size of the passed vector and size of the type

void setData(const ofPixels_< T > &data, GLenum usage)

updateData ()

void updateData(GLintptr offset, const vector< T > &data)

typed version of updateData, same functionality but guesses the size from the size of the passed vector and size of the type

map ()

void * map(GLenum access)

glMapNamedBuffer: https://www.opengl.org/sdk/docs/man4/html/glMapBuffer.xhtml before GL 4.5 emulates glMapNamedBuffer by binding to last known target for this buffer and mapping that target

-----—| invariant: direct state access is not available

unmap ()

void unmap()

glUnmapNamedBuffer: https://www.opengl.org/sdk/docs/man4/html/glUnmapBuffer.xhtml before GL 4.5 emulates glUnmapNamedBuffer by unmapping and unbinding the last known target for this buffer

-----—| invariant: direct state access is not available

map ()

T * map(GLenum access)

typed version of map, returns an array of T when used like: buffer.map<Type>(access)

mapRange ()

void * mapRange(GLintptr offset, GLsizeiptr length, GLenum access)

glMapNamedBufferRange: https://www.opengl.org/sdk/docs/man4/html/glMapBufferRange.xhtml before GL 4.5 emulates glMapNamedBufferRange by binding to last known target for this buffer and mapping that target

-----—| invariant: direct state access is not available

unmapRange ()

void unmapRange()

same as unmap, just to make the api more clear

mapRange ()

T * mapRange(GLintptr offset, GLsizeiptr length, GLenum access)

typed version of mapRange, returns an array of T when used like: buffer.mapRange<Type>(access)

copyTo ()

void copyTo(ofBufferObject &dstBuffer)

size ()

GLsizeiptr size() const