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Noise overlay for Earthview night light appearance

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This commit is contained in:
Thorsten Renk 2016-06-14 10:15:44 +03:00
parent f6a44ca869
commit 4000ced617
1 changed files with 15 additions and 8 deletions
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23
Shaders/planet.frag
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@ -19,10 +19,7 @@ uniform sampler2D grain_texture;
float Noise2D(in vec2 coord, in float wavelength);
float luminance(vec3 color)
{
return dot(vec3(0.212671, 0.715160, 0.072169), color);
}
void main()
{
@ -55,7 +52,7 @@ void main()
{shadowTexel = vec4 (0.0,0.0,0.0,0.0);}
texel = texture2D(texture, gl_TexCoord[0].st);
float night_light = texel.a;
float night_light = (1.0 -texel.a);
texel.a = 1.0;
grainTexel = texture2D(grain_texture, gl_TexCoord[0].st * 40.0);
@ -119,8 +116,18 @@ void main()
//fragColor = fragColor * (1.0 - 0.5 * shadowTexel.a);
//fragColor = mix(fragColor, shadowTexel, shadowTexel.a);
float night_light_factor = (1.0 -night_light) * (1.0 - smoothstep(-0.3, -0.1, NdotLraw));
fragColor.rgb += vec3(0.6, 0.55, 0.4) * night_light_factor;
float night_light_factor = night_light * (1.0 - smoothstep(-0.3, 0.0, NdotLraw));
float noise_factor = (0.4 + 0.6* smoothstep(0.7 - 0.4* night_light,0.9 - 0.4 * night_light,noise));
night_light_factor *= noise_factor;
//night_light_factor *=smoothstep(0.1 + (0.3*night_light), 0.2 + (0.3*night_light), noise);
//night_light_factor = smoothstep(0.3, 0.4, night_light_factor);
vec3 light_color = vec3(1.0, 0.7, 0.3);
vec3 central_light_color = vec3 (1.0, 1.0, 1.0);
light_color = mix(light_color, central_light_color, smoothstep(0.3, 0.6,noise*noise * night_light));
fragColor.rgb += light_color * night_light_factor * 1.4;
float angle = dot(normalize(ecViewDir), normalize(normal));
float distance_through_atmosphere = min(10.0 / (abs(angle)+0.001),500.0);
@ -139,6 +146,6 @@ void main()
fragColor = mix(fogColor, fragColor, fogFactor);
gl_FragColor = fragColor;
gl_FragColor = clamp(fragColor, 0.0, 1.0);
//gl_FragColor = vec4 (NdotL - 0.5, NdotL - 0.5, NdotL - 0.5, 1.0);
}