#include "deferredmodule.h"
#include "glassert.h"
#include "texture.h"

GBuffer::GBuffer(int width, int height) : FrameBuffer()
{
    Texture* tex;
    // - Normal buffer
    tex = new Texture(GL_RGB, GL_RGB16F, width, height, GL_FLOAT);
    tex->setFiltering(GL_NEAREST);
    addTexture(tex, GL_COLOR_ATTACHMENT0);

    // - Color + Specular exponent buffer
    tex = new Texture(GL_RGBA, GL_RGBA, width, height);
    tex->setFiltering(GL_NEAREST);
    addTexture(tex, GL_COLOR_ATTACHMENT1);

    // - Specular color + objectId buffer
    tex = new Texture(GL_RGBA, GL_RGBA, width, height);
    tex->setFiltering(GL_NEAREST);
    addTexture(tex, GL_COLOR_ATTACHMENT2);

    // - depth buffer
    tex = new Texture(GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT, width, height, GL_FLOAT);
    tex->setFiltering(GL_NEAREST);
    addTexture(tex, GL_DEPTH_ATTACHMENT);

    initGL();
}

GBuffer::~GBuffer()
{
    for(Texture* t : textures)
        delete(t);
}