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#version 410

uniform mat4 MVP; // Projection * View * Model matrix
uniform mat4 MV;  // View * Model Matrix
uniform mat4 NM;  // Normal matrix
uniform int  NMU; // Use normal matrix

layout(location = 0) in vec3 POSITION;
layout(location = 1) in vec3 NORMAL;

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#version 410

subroutine
vec4
technique(vec4 light, vec3 L);

struct ColorOrTex {
  vec4 color;
};

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#include <ui-app.h>
#include <ui-window.h>

using namespace ui;

int main(int argc, const char *argv[]) {
  App app;

  Window mainWindow({{10,0}, {800, 600}});

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/*
 * Copyright (c), Recep Aslantas.
 * MIT License (MIT), http://opensource.org/licenses/MIT
 */

#version 410

uniform mat4 MVP; // Projection * View * Model matrix
uniform mat4 MV;  // View * Model Matrix
uniform mat4 NM;  // Normal matrix

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/*
 * Copyright (c), Recep Aslantas.
 * MIT License (MIT), http://opensource.org/licenses/MIT
 */
 
#version 410

#define AmbientlLight    1u
#define DirectionalLight 2u
#define PointLight       3u

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void
gkPrepareCameraProp(GkCamera * __restrict cam) {
  mat4    projViewInv;
  vec4   *vert;
  vec3    min, max;
  int32_t i;

  vert = cam->vertices;

  glm_mat4_inv(cam->projView, projViewInv);

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Source: https://www.opengl.org/discussion_boards/showthread.php/173019-View-Space-Light-Position-Moving

vec3 PositionFromDepth_DarkPhoton(in float depth)
{
  vec2 ndc;             // Reconstructed NDC-space position
  vec3 eye;             // Reconstructed EYE-space position
 
  eye.z = near * far / ((depth * (far - near)) - far);
 

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CGLM_INLINE
void
glm_aabb_transform(vec3 box[2], mat4 m, vec3 dest[2]) {
  vec3 v[2], xa, xb, ya, yb, za, zb, tmp;

  glm_vec_scale(m[0], box[0][0], xa);
  glm_vec_scale(m[0], box[1][0], xb);

  glm_vec_scale(m[1], box[0][1], ya);
  glm_vec_scale(m[1], box[1][1], yb);

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/*
 * Copyright (c), Recep Aslantas. All rights reserved.
 */

#import "GLView.h"
#import <OpenGL/OpenGL.h>
#import <OpenGL/gl3.h>

@interface GLView()
@end

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/*
 * Copyright (c), Recep Aslantas. All rights reserved.
 */

#import <Cocoa/Cocoa.h>

@protocol GLViewDelegate;

@interface GLView : NSView {
  NSOpenGLContext     * m_openGLContext;