cmbruns

#version 450 core

// Vertex shader for rendering an infinite plane.
void main() {}  // vertex shader does nothing. All the work is done in the geometry shader

cmbruns

#version 450 core

// Simplified vertex shader for rendering an infinite plane.

layout(location = 1) uniform mat4 projection = mat4(1);
layout(location = 2) uniform mat4 view = mat4(1);
layout(location = 3) uniform mat4 model = mat4(
    1, 0, 0, 0,
    0, 1, 0, 0,
    0, 0, 1, 0,

cmbruns

#version 450 core

in vec4 intersection_model;  // in model space
out vec4 frag_color;

void main()
{
    // simple but expensive 2: discard pixels not on the plane
    if (intersection_model.w > 0)
        discard;

cmbruns

#version 450 core

// Simplified vertex shader for rendering an infinite plane.

layout(location = 1) uniform mat4 projection = mat4(1);
layout(location = 2) uniform mat4 view = mat4(1);
uniform mat4 model = mat4(1);

// simple but expensive 1: vertices cover the entire screen
// projected screen quad - this is our hard-coded "vertex buffer"

cmbruns

// Sample custom iterator.
// By perfectly.insane (http://www.dreamincode.net/forums/index.php?showuser=76558)
// From: http://www.dreamincode.net/forums/index.php?showtopic=58468

#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <cassert>