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// ----------------------------------------------------------------------------
// Copyright (c) 2014, Nicolas P. Rougier. All Rights Reserved.
// Distributed under the (new) BSD License.
// ----------------------------------------------------------------------------
// Hooks:
// <transform> : vec4 function(position, ...)
//
// ----------------------------------------------------------------------------
#include "math/constants.glsl"
// Uniforms
// ------------------------------------
uniform float antialias;
// Attributes
// ------------------------------------
attribute vec2 position;
attribute float size;
attribute vec4 fg_color;
attribute vec4 bg_color;
attribute float orientation;
attribute float linewidth;
// Varyings
// ------------------------------------
varying float v_size;
varying vec4 v_fg_color;
varying vec4 v_bg_color;
varying vec2 v_orientation;
varying float v_antialias;
varying float v_linewidth;
// Main (hooked)
// ------------------------------------
void main (void)
{
v_size = size;
v_linewidth = linewidth;
v_antialias = antialias;
v_fg_color = fg_color;
v_bg_color = bg_color;
v_orientation = vec2(cos(orientation), sin(orientation));
gl_Position = <transform>;
gl_PointSize = M_SQRT2 * size + 2.0 * (linewidth + 1.5*antialias);
}
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