57 lines
1.4 KiB
GLSL
57 lines
1.4 KiB
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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// Non-lit surface that predominantly offers environment cube reflection
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// modulated by the diffusemap's RGB. This is used for glass, for example.
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//==============================================================================
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!!ver 110
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!!permu FOG
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!!samps diffusemap=0 normalmap=1 reflect=2
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#include "sys/defs.h"
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varying vec2 tex_c;
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varying vec3 eyevector;
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varying mat3 invsurface;
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varying vec4 tf;
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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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invsurface[0] = v_svector;
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invsurface[1] = v_tvector;
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invsurface[2] = v_normal;
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vec3 eyeminusvertex = e_eyepos - v_position.xyz;
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eyevector.x = dot( eyeminusvertex, v_svector.xyz );
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eyevector.y = dot( eyeminusvertex, v_tvector.xyz );
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eyevector.z = dot( eyeminusvertex, v_normal.xyz );
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tf = ftetransform();
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gl_Position = tf;
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}
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#endif
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#ifdef FRAGMENT_SHADER
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#include "sys/fog.h"
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void main ()
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{
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vec2 stc;
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vec3 out_f;
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vec4 diffuse_f = texture2D(s_diffusemap, tex_c);
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vec3 norm_f;
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norm_f = ( texture2D( s_normalmap, tex_c + vec2( e_time * 0.01, 0.0 ) ).xyz);
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norm_f += ( texture2D( s_normalmap, tex_c - vec2( 0, e_time * 0.01 ) ).xyz);
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norm_f -= 1.0 - ( 4.0 / 256.0 );
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norm_f = normalize( norm_f );
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stc = (1.0 + (tf.xy / tf.w)) * 0.5;
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diffuse_f.rgb = texture2D(s_reflect, stc + norm_f.st).rgb;
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gl_FragColor = diffuse_f;
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}
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#endif
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