Method Create

engine/src/rendertarget.cpp:10–40

#include "rendertarget.h"

void RenderTarget::Create(int w, int h, bool hasdepth)
{
    hasdepthbuffer = hasdepth;
    width = w;
    height = h;

    glActiveTexture(GL_TEXTURE0);
    glGenTextures(1, &fbo_texture);
    glBindTexture(GL_TEXTURE_2D, fbo_texture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
    glBindTexture(GL_TEXTURE_2D, 0);

    if (hasdepthbuffer)
    {
        glGenRenderbuffers(1, &rbo_depth);
        glBindRenderbuffer(GL_RENDERBUFFER, rbo_depth);
        glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, width, height);
        glBindRenderbuffer(GL_RENDERBUFFER, 0);
    }

    glGenFramebuffers(1, &fbo);
    glBindFramebuffer(GL_FRAMEBUFFER, fbo);
    glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fbo_texture, 0);
    if (hasdepthbuffer)
        glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, rbo_depth);
    glBindFramebuffer(GL_FRAMEBUFFER, 0);
}

void RenderTarget::Resize(int w, int h)
{