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Correct FOV scaling of lightspots

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This commit is contained in:
Thorsten Renk 2014-10-05 17:28:04 +03:00
parent 33d1d8c70d
commit ac92428ff3
1 changed files with 13 additions and 10 deletions
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23
Shaders/secondary_lights.frag
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@ -10,14 +10,16 @@ vec3 searchlight(in float dist)
{
vec2 center = vec2 (float(display_xsize) * 0.5, float(display_ysize) * 0.4);
float angularDist;
float headlightIntensity;
angularDist = length(gl_FragCoord.xy -center);
if (angularDist <200.0)
float headlightIntensity;
float lightRadius = (200.0 * 55.0/field_of_view);
float angularDist = length(gl_FragCoord.xy -center);
if (angularDist < lightRadius)
{
headlightIntensity = pow(cos(angularDist/200.0 * 3.1415/2.0),2.0);
headlightIntensity = pow(cos(angularDist/lightRadius * 3.1415/2.0),2.0);
headlightIntensity = headlightIntensity * min(1.0, 10000.0/(dist*dist));
//headlightIntensity*= clamp(1.0 + 0.15 * log(1000.0/(dist*dist)),0.0,1.0);
return headlightIntensity * vec3 (0.5,0.5, 0.5);
}
else return vec3 (0.0,0.0,0.0);
@ -42,13 +44,14 @@ float y_offset = -(float(display_ysize) / fov_v * view_pitch_offset);
vec2 center = vec2 (float(display_xsize) * 0.5 + x_offset, float(display_ysize) * 0.4 + y_offset);
float angularDist;
float headlightIntensity;
angularDist = length(gl_FragCoord.xy -center);
if (angularDist <200.0)
float headlightIntensity;
float lightRadius = (200.0 * 55.0/field_of_view);
float angularDist = length(gl_FragCoord.xy -center);
if (angularDist < lightRadius)
{
headlightIntensity = pow(cos(angularDist/200.0 * 3.1415/2.0),2.0);
headlightIntensity = pow(cos(angularDist/lightRadius * 3.1415/2.0),2.0);
headlightIntensity = headlightIntensity * min(1.0, 10000.0/(dist*dist));
return headlightIntensity * vec3 (0.5,0.5, 0.5);
}