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Update lighting.nzsl

This commit is contained in:
Jérôme Leclercq 2021-05-22 16:51:50 +02:00
parent 709604c070
commit 3437f43af6
1 changed files with 15 additions and 13 deletions
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28
bin/resources/lighting.nzsl
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@ -59,19 +59,10 @@ fn main(input: VertOut) -> FragOut
let normal = normalTexture.Sample(input.uv).xyz * 2.0 - vec3<f32>(1.0, 1.0, 1.0);
let position = positionTexture.Sample(input.uv).xyz;
let distance = length(lightParameters.position - position);
let posToLight = (lightParameters.position - position) / distance;
let lambert = dot(normal, posToLight);
let curAngle = dot(lightParameters.direction, -posToLight);
let innerMinusOuterAngle = lightParameters.innerAngle - lightParameters.outerAngle;
let attenuation = compute_attenuation(distance);
attenuation = attenuation * max((curAngle - lightParameters.outerAngle) / innerMinusOuterAngle, 0.0);
let attenuation = compute_attenuation(position, normal);
let output: FragOut;
output.color = vec4<f32>(lightParameters.color, 1.0) * lambert * attenuation * colorTexture.Sample(input.uv);
output.color = vec4<f32>(lightParameters.color, 1.0) * attenuation * colorTexture.Sample(input.uv);
return output;
}
@ -86,7 +77,18 @@ fn main(input: VertIn) -> VertOut
return output;
}
fn compute_attenuation(distance: f32) -> f32
fn compute_attenuation(worldPos: vec3<f32>, normal: vec3<f32>) -> f32
{
return 1.0 / (lightParameters.constant + lightParameters.linear * distance + lightParameters.quadratic * (distance * distance));
let distance = length(lightParameters.position - worldPos);
let posToLight = (lightParameters.position - worldPos) / distance;
let lambert = dot(normal, posToLight);
let curAngle = dot(lightParameters.direction, -posToLight);
let innerMinusOuterAngle = lightParameters.innerAngle - lightParameters.outerAngle;
let attenuation = 1.0 / (lightParameters.constant + lightParameters.linear * distance + lightParameters.quadratic * (distance * distance));
attenuation = attenuation * lambert * max((curAngle - lightParameters.outerAngle) / innerMinusOuterAngle, 0.0);
return attenuation;
}