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#version 330
#if defined VERTEX_SHADER
uniform mat4 mvp;
in vec3 in_position;
in vec3 in_normal;
out vec3 pos;
out vec3 normal;
void main() {
gl_Position = mvp * vec4(in_position, 1.0);;
pos = in_position;
normal = in_normal;
}
#elif defined FRAGMENT_SHADER
uniform mat4 m_camera;
in vec3 pos;
in vec3 normal;
layout(location=0) out float g_view_z;
layout(location=1) out vec3 g_normal;
void main() {
// Rotate into view space, and record the z component.
g_view_z = -(m_camera * vec4(pos, 1.0)).z;
g_normal = normalize(normal);
}
#endif
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