Buffer.cpp

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#include "Buffer.h"
 
#include <glad/glad.h>
 
namespace dyno
{
 
    void Buffer::create()
    {
        glGenBuffers(1, &id);
        glCheckError();
    }
 
    void Buffer::create(int target, int usage)
    {
        glGenBuffers(1, &id);
        this->target = target;
        this->usage = usage;
        glCheckError();
    }
 
    void Buffer::release()
    {
        glDeleteBuffers(1, &id);
        glCheckError();
 
        // reset object id
        id = GL_INVALID_INDEX;
    }
 
    void Buffer::bind()
    {
        glBindBuffer(target, id);
        glCheckError();
    }
 
    void Buffer::unbind()
    {
        glBindBuffer(target, 0);
        glCheckError();
    }
 
    void Buffer::allocate(int size)
    {
        if (size == this->size)
            return;
 
        this->size = size;
        glBindBuffer(target, id);
        glBufferData(target, size, 0, usage);
        glBindBuffer(target, 0);
        glCheckError();
    }
 
    void Buffer::load(void* data, int size, int offset)
    {
        if ((size + offset) > this->size)
            allocate(size + offset);
 
        glBindBuffer(target, id);
        glBufferSubData(target, offset, size, data);
        glBindBuffer(target, 0);
        glCheckError();
    }
 
    void Buffer::bindBufferBase(int idx)
    {
        glBindBufferBase(this->target, idx, id);
        glCheckError();
    }
    
}