Framebuffer.cpp

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#include "Framebuffer.h"
#include <glad/glad.h>
#include <iostream>
#include "Texture.h"
 
namespace dyno
{
    void Framebuffer::create()
    {
        glGenFramebuffers(1, &id);
    }
 
    void Framebuffer::release()
    {
        glDeleteFramebuffers(1, &id);       
        
        // reset object id
        id = GL_INVALID_INDEX;
    }
 
    int Framebuffer::checkStatus()
    {
        glBindFramebuffer(GL_FRAMEBUFFER, id);
        int status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
        if (status != GL_FRAMEBUFFER_COMPLETE)
        {
            // TODO: error!
            exit(0);
        }
        return status;
    }
 
    unsigned int Framebuffer::current()
    {
        GLint fbo;
        glGetIntegerv(GL_FRAMEBUFFER_BINDING, &fbo);
        return fbo;
    }
 
    void Framebuffer::clearColor(float r, float g, float b, float a)
    {
        glBindFramebuffer(GL_FRAMEBUFFER, id);
        glClearColor(r, g, b, a);
        glClear(GL_COLOR_BUFFER_BIT);
    }
 
    void Framebuffer::clearDepth(float depth)
    {
        glBindFramebuffer(GL_FRAMEBUFFER, id);
        glClearDepth(depth);
        glClear(GL_DEPTH_BUFFER_BIT);
    }
 
    void Framebuffer::bind(unsigned int target)
    {
        glBindFramebuffer(target, id);
    }
 
    void Framebuffer::unbind()
    {
        glBindFramebuffer(GL_FRAMEBUFFER, 0);
    }
 
    void Framebuffer::setTexture(unsigned int attachment, const Texture* tex, int level)
    {
        glFramebufferTexture2D(GL_FRAMEBUFFER, attachment, tex->target, tex->id, level);
        glCheckError();
    }
 
    void Framebuffer::drawBuffers(int count, const unsigned int* buffers)
    {
        glBindFramebuffer(GL_FRAMEBUFFER, id);
        glDrawBuffers(count, buffers);
    }
}