Color-Or-Texture.vert

/*
 * 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
uniform int  NMU; // Use normal matrix

layout(location = 0) in vec3 POSITION;
layout(location = 1) in vec3 NORMAL;
layout(location = 2) in vec2 TEXCOORD;
layout(location = 3) in vec2 TEXCOORD1;
layout(location = 4) in vec2 TEXCOORD2;

out vec3 vPosition;
out vec3 vNormal;
out vec3 vEye;
out vec2 vTexCoord[3];

void main() {
  vec4 pos4 = vec4(POSITION, 1.0);

  vPosition = vec3(MV * pos4);
  vEye      = normalize(-vPosition);

  if (NMU == 1)
    vNormal = normalize(vec3(NM * vec4(NORMAL, 0.0)));
  else
    vNormal = normalize(vec3(MV * vec4(NORMAL, 0.0)));

  gl_Position = MVP * pos4;

  vTexCoord[0] = TEXCOORD;
  vTexCoord[1] = TEXCOORD1;
  vTexCoord[2] = TEXCOORD2;
}

This shader is not used by libgk anymore!
Now there is a shader generator and shader manager for specific purposes/tasks

Check new version at: https://github.com/recp/libgk/tree/master/src/shader/glsl