57 lines
1.6 KiB
GLSL
57 lines
1.6 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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// The diffusemap (monochrome) decides the reflectivity of a surface.
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// Using a cube environmentmap as a source for reflectivity.
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//==============================================================================
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!!ver 110
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!!permu FOG
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!!permu BUMP
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!!permu DELUXE
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!!samps diffuse normalmap reflectcube
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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 vec2 wat_c;
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#ifdef VERTEX_SHADER
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void main (void)
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{
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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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tex_c = v_texcoord;
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wat_c = tex_c + vec2(e_time * 0.01, sin(e_time) * 0.005);
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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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#include "sys/fog.h"
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void main (void)
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{
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vec3 cube_c;
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vec4 out_f = vec4(1.0, 1.0, 1.0, 1.0);
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vec4 diffuse_f = texture2D(s_diffuse, tex_c);
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cube_c = reflect(normalize(-eyevector), texture2D(s_normalmap, wat_c).rgb * 0.35);
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cube_c = cube_c.x * invsurface[0] + cube_c.y * invsurface[1] + cube_c.z * invsurface[2];
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cube_c = (m_model * vec4(cube_c.xyz, 0.0)).xyz;
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out_f.rgb = textureCube(s_reflectcube, cube_c).rgb;
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out_f.rgb *= diffuse_f.r + diffuse_f.b + diffuse_f.g / 3.0;
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// Add fog to the final fragment
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gl_FragColor = fog4(out_f);
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}
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#endif
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