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Added vegetation level to the forest shader, at least for rock/forest in the

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gral@who.net 2010-08-21 22:47:56 +02:00
parent bead8c3486
commit 1286a77977
1 changed files with 12 additions and 2 deletions
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14
Shaders/forest.frag
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@ -14,6 +14,7 @@ uniform float snowlevel; // From /sim/rendering/snow-level-m
const float scale = 1.0;
void main (void)
{
@ -47,7 +48,7 @@ void main (void)
vec4 c1;
c1 = basecolor * vec4(smoothstep(-1.3, 0.5, n), smoothstep(-1.3, 0.5, n), smoothstep(-2.0, 0.9, n), 0.0);
vec4 c2;
vec4 c2;
c2 = basecolor2 * vec4(smoothstep(-1.3, 0.5, n), smoothstep(-1.3, 0.5, n), smoothstep(-2.0, 0.9, n), 0.0);
//draw floor where !steep, and another blurb for smoothing transitions
@ -56,8 +57,17 @@ void main (void)
c4 = mix(vec4(n-0.88, n-0.74, -n, 0.0), c1, smoothstep(0.990, 0.890, abs(normalize(Normal).z)+nvL[2]*0.9));
c5 = mix(c3, c4, 1.0);
//mix floor with texture right way
//brings vegetation 'floor', added vegetationlevel
float vegetationlevel = (rawpos.z)+nvL[2]*3000.0;
if (vegetationlevel < 2200) {
c1 = mix(c2, c5, clamp(0.65, n*0.5, 0.4));
}
else {
c1 = mix(c2, c5, clamp(0.65, n*0.5, 0.1));
}
//snow
c1 = mix(c1, clamp(n+nvL[2]*4.1+vec4(0.1, 0.1, nvL[2]*2.2, 1.0), 0.7, 1.0), smoothstep(snowlevel+300.0, snowlevel+360.0, (rawpos.z)+nvL[1]*3000.0));