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ALS road shader: Render car proxies, fix numerical issues

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Thorsten Renk 2017-03-07 10:32:05 +02:00
parent 58ef0ce998
commit 96193187b7
1 changed files with 48 additions and 14 deletions
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62
Shaders/road-ALS-ultra.frag
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@ -300,6 +300,52 @@ void main (void)
/// END grain overlay
/// BEGIN procedural cars
float cTag = 0.0;
float cPresent = 0.0;
vec2 roadCoords = gl_TexCoord[0].st;
roadCoords.s *=8.0;
roadCoords.s = fract(roadCoords.s);
if (road_traffic_enabled == 1)
{
float cSign = 1.0;
if (roadCoords.s > 0.5) {cSign = -1.0;}
float cCoord = roadCoords.t;
cCoord += 0.3 * osg_SimulationTime * cSign * rtype_traffic_speed;
cCoord *= 5.0;
cTag = fract(cCoord);
float cDomain = cCoord - cTag;
float cRnd = rand2D(vec2 (cDomain, cSign));
cPresent = 0.0;
float cDisc = 0.2 * road_traffic_density * rtype_traffic_density;
if (cRnd > 1.0 - cDisc) {cPresent = 1.0;}
float cColorRnd = (cRnd - 1.0 + cDisc)/ max(cDisc, 0.05);
vec3 cColor = vec3 (0.7 * (1.0 - cColorRnd), 0.7 * 2.0 * (0.5 - abs(cColorRnd - 0.5)) , 0.7 * cColorRnd);
float cPos = cTag;
if (cSign > 0.0) {cPos = 1.0 - cPos;}
float cShape = smoothstep(0.0, 0.05, cPos) * (1.0-smoothstep(0.35, 0.4, cPos));
float laneShape = smoothstep(0.25, 0.28, roadCoords.s) * (1.0-smoothstep(0.42, 0.45, roadCoords.s));
laneShape += smoothstep(0.65, 0.68, roadCoords.s) * (1.0-smoothstep(0.82, 0.85, roadCoords.s));
cShape *= laneShape;
texel.rgb = mix(texel.rgb, cColor, cPresent * cShape);
}
/// END procedural cars
vec3 reflVecN;
///BEGIN bump
@ -536,9 +582,7 @@ void main (void)
vec2 roadCoords = gl_TexCoord[0].st;
roadCoords.s *=8.0;
roadCoords.s = fract(roadCoords.s);
vec3 pLMColor = vec3 (0.941, 0.682, 0.086);
@ -550,19 +594,9 @@ void main (void)
if (road_traffic_enabled == 1)
{
float cSign = 1.0;
if (roadCoords.s > 0.5) {cSign = -1.0;}
roadCoords.t += 0.2 * osg_SimulationTime * cSign * rtype_traffic_speed;
float cTag = fract(roadCoords.t * 10.0);
float cDomain = roadCoords.t * 10.0 - cTag;
float cRnd = rand2D(vec2 (0.1 * cDomain, cSign));
float cPresent = 0.0;
if (cRnd > 1.0 - 0.2 * road_traffic_density * rtype_traffic_density) {cPresent = 1.0;}
vec3 pCLColor = vec3 (0.95, 1.0, 1.0);
float pCLIntensity = smoothstep(0.2, 0.5, cTag) * (1.0-smoothstep(0.5, 0.7, cTag));
float pCLIntensity = smoothstep(0.4, 0.6, cTag) * (1.0-smoothstep(0.6, 0.8, cTag));
float laneFact = smoothstep(0.25, 0.3, roadCoords.s) * (1.0-smoothstep(0.3, 0.35, roadCoords.s));
laneFact += smoothstep(0.35, 0.4, roadCoords.s) * (1.0-smoothstep(0.4, 0.45, roadCoords.s));
laneFact += smoothstep(0.65, 0.7, roadCoords.s) * (1.0-smoothstep(0.7, 0.75, roadCoords.s));