opengl_ebo_structure

OpenGL element buffer (EBO) holding the triangle indices (uint3) of an indexed mesh.

Derives from: opengl_gpu_buffer

0 functions take it 0 return it 0 operators

Fields and methods

Members of the struct opengl_ebo_structure. Most of what you do with a CGP type goes through the free functions listed below.

Methods

void initialize_data_on_gpu(numarray<uint3> const& data)

Allocates a new EBO (glBufferData on GL_ELEMENT_ARRAY_BUFFER, GL_DYNAMIC_DRAW) holding the triangle indices and stores its id and size (number of triangles); prints a warning if the EBO was already allocated, whose memory is then lost. src

Inherited from opengl_gpu_buffer (7 members)

Fields

`GLuint id = 0`	OpenGL id of the buffer, 0 when it is not allocated.
`GLuint size = 0`	Number of elements in the buffer (a vec3 or a uint3 counts as one element), 0 when empty.
`GLenum type = 0`	OpenGL target of the buffer, GL_ARRAY_BUFFER for a VBO and GL_ELEMENT_ARRAY_BUFFER for an EBO.
`opengl_gpu_buffer_details details`	Allocated size in bytes, number of components per element (2, 3 or 4) and component type (GL_FLOAT), used to describe the buffer to the VAO.

Methods

`void bind() const`	Binds the buffer to its target (glBindBuffer) when its id is not 0. src
`void unbind() const`	Unbinds any buffer from the target of this buffer (glBindBuffer with 0). src
`void clear()`	Deletes the buffer on the GPU (glDeleteBuffers) and resets id, size, type and details to 0. src

Functions taking a opengl_ebo_structure

None.

Functions returning a opengl_ebo_structure

None.

Operators

None.