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Support for dual-lane highways in ALS road shader

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This commit is contained in:
Thorsten Renk 2017-05-13 13:22:22 +03:00
parent 0eff76715e
commit 1a0e8d22cb
1 changed files with 19 additions and 4 deletions
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23
Shaders/road-ALS-ultra.frag
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@ -120,52 +120,60 @@ float light_func (in float x, in float a, in float b, in float c, in float d, in
}
void road_type_mapper (in vec2 coord, out float rtype_traffic_density, out float rtype_base_illumination, out float rtype_traffic_speed)
void road_type_mapper (in vec2 coord, out float rtype_traffic_density, out float rtype_base_illumination, out float rtype_traffic_speed, out int rtype_dual_lane)
{
if (coord.s < 0.125)
{
rtype_dual_lane = 0;
rtype_traffic_density = 0;
rtype_base_illumination = 0;
rtype_traffic_speed = 0.0;
}
else if (coord.s < 0.250)
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.3;
rtype_base_illumination = 0.65;
rtype_traffic_speed = 0.5;
}
else if (coord.s < 0.375)
{
rtype_dual_lane = 0;
rtype_traffic_density = 1.0;
rtype_base_illumination = 1.0;
rtype_traffic_speed = 1.0;
}
else if (coord.s < 0.5)
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.0;
}
else if (coord.s < 0.625)
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.0;
}
else if (coord.s < 0.750)
{
rtype_dual_lane = 1;
rtype_traffic_density = 1.0;
rtype_base_illumination = 0.65;
rtype_traffic_speed = 1.0;
}
else if (coord.s < 0.875)
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.1;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.3;
}
else
{
rtype_dual_lane = 0;
rtype_traffic_density = 0.0;
rtype_base_illumination = 0.0;
rtype_traffic_speed = 0.0;
@ -198,7 +206,8 @@ void main (void)
float rtype_traffic_density = 0.0;
float rtype_base_illumination = 0.0;
float rtype_traffic_speed = 0.0;
road_type_mapper (gl_TexCoord[0].st, rtype_traffic_density, rtype_base_illumination, rtype_traffic_speed);
int rtype_dual_lane = 0;
road_type_mapper (gl_TexCoord[0].st, rtype_traffic_density, rtype_base_illumination, rtype_traffic_speed, rtype_dual_lane);
float pf = 0.0;
float pf1 = 0.0;
@ -333,12 +342,18 @@ void main (void)
if (road_traffic_enabled == 1)
{
float cSign = 1.0;
if (roadCoords.s > 0.5) {cSign = -1.0;}
float cOffset = 0.0;
if (roadCoords.s > 0.5)
{
if (rtype_dual_lane == 0) {cSign = -1.0;}
else {cOffset = 5.0;}
}
cSign *= road_traffic_direction;
float total_traffic_density = road_traffic_density * rtype_traffic_density;
float cCoord = roadCoords.t;
float cCoord = roadCoords.t + cOffset;
cCoord += 0.3 * osg_SimulationTime * cSign * rtype_traffic_speed * (1.0 - (0.9 * smoothstep(1.0, 2.5, total_traffic_density)));
cCoord *= 5.0;