bgfx/examples/18-ibl/vs_ibl_mesh.sc

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$input a_position, a_normal
$output v_view, v_normal
/*
* Copyright 2014 Dario Manesku. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
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uniform vec4 u_camPos;
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void main()
{
gl_Position = mul(u_modelViewProj, vec4(a_position, 1.0) );
vec3 normal = a_normal * 2.0 - 1.0;
v_normal = mul(u_model[0], vec4(normal, 0.0) ).xyz;
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v_view = normalize(u_camPos.xyz - mul(u_model[0], vec4(a_position, 1.0)).xyz);
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}