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vec4 getLightColor();
void applyScatter(inout vec3 col);
uniform samplerCube environmentMap;
uniform sampler2D diffuseMap;
uniform sampler2D bumpMap;
void main()
{
vec4 diff = texture2D(diffuseMap, gl_TexCoord[0].xy);
float b = texture2D(bumpMap, gl_TexCoord[0].xy).a;
b -= texture2D(bumpMap, gl_TexCoord[2].xy).a;
vec3 ref = textureCube(environmentMap, gl_TexCoord[1].xyz*vec3(1.0,1.0,1.0-b*5.0)).rgb;
vec4 specular = gl_TexCoord[3];
vec3 col = mix(getLightColor().rgb * diff.rgb, ref, specular.a)+specular.rgb*diff.rgb;
col += col * b;
float m = (col.r + col.g + col.b);
m *= 1.0/3.0;
col = mix(col, vec3(m), -specular.a*specular.a);
applyScatter(col);
gl_FragColor.rgb = col;
gl_FragColor.a = diff.a;
}
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