45 lines
864 B
GLSL
45 lines
864 B
GLSL
//======= Copyright (c) 2015-2020 Vera Visions LLC. All rights reserved. =======
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//
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// Purpose:
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//
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// Fades surfaces in with distance. It's the opposite of the clutter shader.
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//==============================================================================
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!!ver 110
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!!samps diffuse=0
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#include "sys/defs.h"
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#include "sys/fog.h"
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varying vec2 tex_c;
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varying float eyedist;
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#ifndef TINT
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#define TINT 1.0,1.0,1.0
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#endif
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#ifdef VERTEX_SHADER
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void main ()
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{
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tex_c = v_texcoord;
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eyedist = abs( length( e_eyepos - v_position.xyz ) ) / 1024.0;
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if (eyedist > 1.0) {
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eyedist = 1.0;
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} else if (eyedist < 0.0) {
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eyedist = 0.0;
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}
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gl_Position = ftetransform();
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}
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#endif
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#ifdef FRAGMENT_SHADER
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void main ()
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{
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gl_FragColor = vec4( texture2D( s_diffuse, tex_c ).rgb * eyedist, eyedist );
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gl_FragColor *= e_colourident;
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gl_FragColor.rgb *= vec3(TINT);
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}
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#endif
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