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uniform mat4 ModelViewProjectionMatrix;
uniform mat4 ModelMatrix;
uniform mat4 ModelViewMatrix;
uniform mat3 WorldNormalMatrix;
#ifndef ATTRIB
uniform mat3 NormalMatrix;
#endif
#ifndef HAIR_SHADER_FIBERS
in vec3 pos;
in vec3 nor;
#else
in int fiber_index;
in float curve_param;
#endif
out vec3 worldPosition;
out vec3 viewPosition;
/* Used for planar reflections */
uniform vec4 ClipPlanes[1];
#ifdef USE_FLAT_NORMAL
flat out vec3 worldNormal;
flat out vec3 viewNormal;
#else
out vec3 worldNormal;
out vec3 viewNormal;
#endif
void main() {
#ifndef HAIR_SHADER_FIBERS
gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0);
#else
vec3 pos;
vec3 nor;
vec2 view_offset;
hair_fiber_get_vertex(fiber_index, curve_param, ModelViewMatrix, pos, nor, view_offset);
gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0);
gl_Position.xy += view_offset * gl_Position.w;
#endif
viewPosition = (ModelViewMatrix * vec4(pos, 1.0)).xyz;
worldPosition = (ModelMatrix * vec4(pos, 1.0)).xyz;
viewNormal = normalize(NormalMatrix * nor);
worldNormal = normalize(WorldNormalMatrix * nor);
/* Used for planar reflections */
gl_ClipDistance[0] = dot(vec4(worldPosition, 1.0), ClipPlanes[0]);
#ifdef ATTRIB
pass_attrib(pos);
#endif
}
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