bgfx/examples/14-shadowvolumes/vs_shadowvolume_svside.sc

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$input a_position, a_texcoord0
$output v_k
/*
2014-01-13 17:45:18 -05:00
* Copyright 2013-2014 Dario Manesku. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#include "../common/common.sh"
uniform vec4 u_virtualLightPos_extrusionDist;
#define u_virtualLightPos u_virtualLightPos_extrusionDist.xyz
#define u_extrusionDistance u_virtualLightPos_extrusionDist.w
void main()
{
vec3 pos = a_position;
if (a_texcoord0.x == 1.0)
{
vec3 toLight = pos - u_virtualLightPos;
pos += normalize(toLight) * u_extrusionDistance;
}
gl_Position = mul(u_modelViewProj, vec4(pos, 1.0));
v_k = a_texcoord0.y;
}