/*******************************************************************************************
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								*
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								*   rPBR [shader] - Background skybox vertex shader
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								*
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								*   Copyright (c) 2017 Victor Fisac
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								*
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								**********************************************************************************************/
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								#version 330
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								// Input vertex attributes
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								in vec3 vertexPosition;
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								// Input uniform values
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								uniform mat4 projection;
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								uniform mat4 view;
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								// Output vertex attributes (to fragment shader)
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								out vec3 fragPos;
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								void main()
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								{
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								    // Calculate fragment position based on model transformations
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								    fragPos = vertexPosition;
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								    // Remove translation from the view matrix
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								    mat4 rotView = mat4(mat3(view));
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								    vec4 clipPos = projection*rotView*vec4(vertexPosition, 1.0);
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								    // Calculate final vertex position
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								    gl_Position = clipPos.xyww;
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								}
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