fly/fgdata
1
0
Fork 0
Code Activity

Lessen fog in front of city light

Browse source
This commit is contained in:
fredb 2010-03-23 22:20:24 +00:00
parent 0d930f3b68
commit d8f6ccf49b
1 changed files with 8 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
Shaders/urban.frag
View file

@ -68,12 +68,6 @@ void main (void)
vec2 uv = dp + ds * d;
vec3 N = texture2D(NormalTex, uv).xyz * 2.0 - 1.0;
float fogFactor;
float fogCoord = ecPos3.z;
const float LOG2 = 1.442695;
fogFactor = exp2(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord * LOG2);
fogFactor = clamp(fogFactor, 0.0, 1.0);
float emis = N.z;
N.z = sqrt(1.0 - min(1.0,dot(N.xy, N.xy)));
@ -97,10 +91,17 @@ void main (void)
float reflectance = ambient_light.r * 0.3 + ambient_light.g * 0.59 + ambient_light.b * 0.11;
if ( shadow_factor < 1.0 )
ambient_light = constantColor + gl_LightSource[0].diffuse * shadow_factor * vec4(diffuse, 1.0);
ambient_light += ((1.0 - smoothstep(0.15, 0.25, reflectance)) * 1.0 * emis * vec4(0.75, 0.59, 0.05, 0.0));
float emission_factor = (1.0 - smoothstep(0.15, 0.25, reflectance)) * emis;
ambient_light += (emission_factor * vec4(0.75, 0.59, 0.05, 0.0));
vec4 finalColor = texture2D(BaseTex, uv) * ambient_light;
float fogFactor;
float fogCoord = ecPos3.z / (1.0 + smoothstep(0.3, 0.7, emission_factor));
const float LOG2 = 1.442695;
fogFactor = exp2(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord * LOG2);
fogFactor = clamp(fogFactor, 0.0, 1.0);
if (gl_Fog.density == 1.0)
fogFactor=1.0;