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  1. attribute vec3 pos;
  2. attribute vec2 texcoord;
  3. attribute vec3 normal;
  4. uniform mat4 M;
  5. uniform mat4 P;
  6. uniform mat4 V;
  7. uniform mat4 NM;//Normal Matrix ʹ�����������ߵ�
  8. varying vec3 V_Normal;
  9. varying vec3 V_WorldPos;
  10. void main()
  11. {
  12. V_Normal = mat3(NM)*normal;
  13. vec4 worldPos = M * vec4(pos, 1.0);
  14. V_WorldPos = worldPos.xyz;
  15. gl_Position=P*V*M*vec4(pos,1.0);
  16. }