25 lines
607 B
GLSL
25 lines
607 B
GLSL
#version 330
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uniform sampler2D tex;
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uniform sampler2D dtex;
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uniform mat4 invproj;
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uniform vec2 screen;
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in float lf;
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in vec2 tc;
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out vec4 color;
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void main(void)
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{
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vec2 xy = gl_FragCoord.xy / screen;
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float FragZ = gl_FragCoord.z;
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float EnvZ = texture(dtex, xy).x;
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vec4 FragmentPos = invproj * (2. * vec4(xy, FragZ, 1.0) - 1.);
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FragmentPos /= FragmentPos.w;
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vec4 EnvPos = invproj * (2. * vec4(xy, EnvZ, 1.0) - 1.);
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EnvPos /= EnvPos.w;
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float alpha = clamp((EnvPos.z - FragmentPos.z) * 0.3, 0., 1.);
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color = texture(tex, tc);
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color.a *= alpha * smoothstep(1., 0.8, lf);
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}
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