22 lines
894 B
GLSL
22 lines
894 B
GLSL
void main(void)
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{
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float yoffset = GROUND_OFFSET - waterHeight;
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vec3 camera = vec3(cameraLocation.x, max(cameraLocation.y + yoffset, 0.0), cameraLocation.z);
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vec3 location = vec3(unprojected.x, max(unprojected.y + yoffset, 0.0), unprojected.z);
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vec3 x = vec3(0.0, Rg + camera.y * WORLD_SCALING, 0.0);
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vec3 v = normalize(location - camera);
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vec3 s = normalize(sunDirection * SUN_DISTANCE_SCALED - x);
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float r = length(x);
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float mu = dot(x, v) / r;
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float t = -r * mu - sqrt(r * r * (mu * mu - 1.0) + Rg * Rg);
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vec4 sunTransmittance = _sunTransmittance(v, s, r, mu, sunRadius);
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vec3 attenuation;
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vec3 inscattering = _getInscatterColor(x, t, v, s, r, mu, attenuation);
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gl_FragColor = vec4(0.01, 0.012, 0.03, 1.0); // night sky
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gl_FragColor += sunTransmittance + vec4(inscattering, 0.0);
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gl_FragColor = applyToneMapping(gl_FragColor);
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}
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