File: ex_prim_shader_vertex.glsl

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allegro5 2%3A5.2.10.1%2Bdfsg-1
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attribute vec4 al_pos;
attribute vec3 al_user_attr_0;

uniform mat4 al_projview_matrix;

/* pixel_position and normal are used to compute the reflections in the pixel shader */
varying vec3 pixel_position;
varying vec3 normal;

void main()
{
   pixel_position = al_pos.xyz;
   normal = al_user_attr_0;
   gl_Position = al_projview_matrix * al_pos;
}