istereo2: sdr/test.p.glsl annotate

istereo2

port to android mostly complete, ads not done, and needs some polishing

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sun, 04 Oct 2015 08:15:24 +0300
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rev	line source
nuclear@2	1 #ifdef GL_ES
nuclear@2	2 precision mediump float;
nuclear@2	3 #endif
nuclear@2	4
nuclear@2	5 uniform sampler2D tex;
nuclear@2	6
nuclear@2	7 varying vec3 vpos;
nuclear@2	8 varying vec4 var_color;
nuclear@2	9 varying vec2 var_texcoord;
nuclear@2	10
nuclear@2	11 void main()
nuclear@2	12 {
nuclear@2	13 vec4 fog_color = vec4(0.6, 0.6, 0.6, 1.0);
nuclear@2	14
nuclear@2	15 float fog = exp(-(0.2 * -vpos.z));
nuclear@2	16
nuclear@2	17 vec4 texel = texture2D(tex, var_texcoord);
nuclear@2	18 texel.w = 1.0;
nuclear@2	19
nuclear@2	20 vec4 col = var_color * texel;
nuclear@2	21 gl_FragColor = mix(fog_color, col, fog);
nuclear@2	22 }