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// ----------------------------------------------------------------------------
// Copyright (c) 2014, Nicolas P. Rougier. All Rights Reserved.
// Distributed under the (new) BSD License.
// ----------------------------------------------------------------------------
#version 120
// Uniform
// ------------------------------------
uniform mat4 u_projection;
uniform float u_antialias;
// Attributes
// ------------------------------------
attribute float a_size;
attribute float a_orientation;
attribute float a_linewidth;
attribute vec3 a_position;
attribute vec4 a_fg_color;
attribute vec4 a_bg_color;
// Varyings
// ------------------------------------
varying float v_antialias;
varying float v_linewidth;
varying float v_size;
varying vec4 v_fg_color;
varying vec4 v_bg_color;
varying vec2 v_rotation;
void main (void)
{
v_size = a_size;
v_linewidth = 2.5*a_linewidth;
v_antialias = 3.0*u_antialias;
v_fg_color = a_fg_color;
v_bg_color = a_bg_color;
v_rotation = vec2(cos(a_orientation), sin(a_orientation));
gl_Position = u_projection * vec4(a_position, 1.0);
gl_PointSize = a_size + 2.0*(a_linewidth + 1.5*v_antialias);
}
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