Buffers Struct Reference

Public Member Functions
void	create (const Mesh &mesh)
void	release ()

Public Attributes
GLuint	vao
GLuint	vertex_buffer
int	vertex_count

Detailed Description

Definition at line 15 of file tuto9_buffers.cpp.

Constructor & Destructor Documentation

Buffers()

Buffers::Buffers ( )

inline

Definition at line 21 of file tuto9_buffers.cpp.

: vao(0), vertex_buffer(0), vertex_count(0) {}

Member Function Documentation

create()

void Buffers::create ( const Mesh & mesh )

inline

Definition at line 23 of file tuto9_buffers.cpp.

    {
        if(!mesh.vertex_buffer_size()) return;
 
        // cree et configure le vertex array object: conserve la description des attributs de sommets
        glGenVertexArrays(1, &vao);
        glBindVertexArray(vao);
        
        // cree et initialise le buffer: conserve la positions des sommets
        glGenBuffers(1, &vertex_buffer);
        glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
        glBufferData(GL_ARRAY_BUFFER, mesh.vertex_buffer_size(), mesh.vertex_buffer(), GL_STATIC_DRAW);
        
        // attribut 0, position des sommets, declare dans le vertex shader : in vec3 position;
        glVertexAttribPointer(0, 
            3, GL_FLOAT,    // size et type, position est un vec3 dans le vertex shader
            GL_FALSE,       // pas de normalisation des valeurs
            0,              // stride 0, les valeurs sont les unes a la suite des autres
            0               // offset 0, les valeurs sont au debut du buffer
        );
        glEnableVertexAttribArray(0);
        // attention : le vertex array selectionne est un parametre implicite
        // attention : le buffer selectionne sur GL_ARRAY_BUFFER est un parametre implicite 
        
        // conserve le nombre de sommets
        vertex_count= mesh.vertex_count();
    }

release()

void Buffers::release ( )

inline

Definition at line 51 of file tuto9_buffers.cpp.

    {
        glDeleteBuffers(1, &vertex_buffer);
        glDeleteVertexArrays(1, &vao);
    }

Member Data Documentation

vao

GLuint Buffers::vao

Definition at line 17 of file tuto9_buffers.cpp.

vertex_buffer

GLuint Buffers::vertex_buffer

Definition at line 18 of file tuto9_buffers.cpp.

vertex_count

int Buffers::vertex_count

Definition at line 19 of file tuto9_buffers.cpp.

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

• gkit2_tutos/tuto9_buffers.cpp