OpenCV  4.0.0-alpha
Open Source Computer Vision
Public Types | Public Member Functions | Static Public Member Functions | List of all members
cv::ogl::Buffer Class Reference

Smart pointer for OpenGL buffer object with reference counting. More...

#include "opengl.hpp"

Public Types

enum  Access {
  READ_ONLY = 0x88B8,
  WRITE_ONLY = 0x88B9,
  READ_WRITE = 0x88BA
}
 
enum  Target {
  ARRAY_BUFFER = 0x8892,
  ELEMENT_ARRAY_BUFFER = 0x8893,
  PIXEL_PACK_BUFFER = 0x88EB,
  PIXEL_UNPACK_BUFFER = 0x88EC
}
 The target defines how you intend to use the buffer object. More...
 

Public Member Functions

 Buffer ()
 The constructors. More...
 
 Buffer (int arows, int acols, int atype, unsigned int abufId, bool autoRelease=false)
 
 Buffer (Size asize, int atype, unsigned int abufId, bool autoRelease=false)
 
 Buffer (int arows, int acols, int atype, Target target=ARRAY_BUFFER, bool autoRelease=false)
 
 Buffer (Size asize, int atype, Target target=ARRAY_BUFFER, bool autoRelease=false)
 
 Buffer (InputArray arr, Target target=ARRAY_BUFFER, bool autoRelease=false)
 
void bind (Target target) const
 Binds OpenGL buffer to the specified buffer binding point. More...
 
unsigned int bufId () const
 get OpenGL opject id More...
 
int channels () const
 
Buffer clone (Target target=ARRAY_BUFFER, bool autoRelease=false) const
 Creates a full copy of the buffer object and the underlying data. More...
 
int cols () const
 
void copyFrom (InputArray arr, Target target=ARRAY_BUFFER, bool autoRelease=false)
 Copies from host/device memory to OpenGL buffer. More...
 
void copyFrom (InputArray arr, cuda::Stream &stream, Target target=ARRAY_BUFFER, bool autoRelease=false)
 
void copyTo (OutputArray arr) const
 Copies from OpenGL buffer to host/device memory or another OpenGL buffer object. More...
 
void copyTo (OutputArray arr, cuda::Stream &stream) const
 
void create (int arows, int acols, int atype, Target target=ARRAY_BUFFER, bool autoRelease=false)
 Allocates memory for ogl::Buffer object. More...
 
void create (Size asize, int atype, Target target=ARRAY_BUFFER, bool autoRelease=false)
 
int depth () const
 
int elemSize () const
 
int elemSize1 () const
 
bool empty () const
 
cuda::GpuMat mapDevice ()
 map to device memory (blocking) More...
 
cuda::GpuMat mapDevice (cuda::Stream &stream)
 Maps OpenGL buffer to CUDA device memory. More...
 
Mat mapHost (Access access)
 Maps OpenGL buffer to host memory. More...
 
void release ()
 Decrements the reference counter and destroys the buffer object if needed. More...
 
int rows () const
 
void setAutoRelease (bool flag)
 Sets auto release mode. More...
 
Size size () const
 
int type () const
 
void unmapDevice ()
 
void unmapDevice (cuda::Stream &stream)
 Unmaps OpenGL buffer. More...
 
void unmapHost ()
 Unmaps OpenGL buffer. More...
 

Static Public Member Functions

static void unbind (Target target)
 Unbind any buffers from the specified binding point. More...
 

Detailed Description

Smart pointer for OpenGL buffer object with reference counting.

Buffer Objects are OpenGL objects that store an array of unformatted memory allocated by the OpenGL context. These can be used to store vertex data, pixel data retrieved from images or the framebuffer, and a variety of other things.

ogl::Buffer has interface similar with Mat interface and represents 2D array memory.

ogl::Buffer supports memory transfers between host and device and also can be mapped to CUDA memory.


The documentation for this class was generated from the following file: