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libgarbage: clean up lighting defaults

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This commit is contained in:
Crispy 2023-07-30 12:26:54 +02:00
parent 3005cfc8aa
commit 8ca3dc6e53
3 changed files with 15 additions and 13 deletions
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11
Assets/raymarched/lib/libgarbage.cginc
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@ -285,12 +285,13 @@ SurfacePoint default_material_sdf(float3 p) {
}
float3 default_lighting(Ray ray) {
float3 sun_dir = normalize(float3(1, 0.5, 0));
float3 sun_dir = normalize(float3(1, 0.5, -0.5));
if (ray.missed)
return 0.1;
float3 col = 0;
col = ray.mat.col * dot(ray.normal, sun_dir);
return col;
return lRenderSky(ray.dir, sun_dir);
float3 light = lSun(ray.normal, sun_dir);
light *= lShadow(ray.hit_pos + ray.normal * SURF_DIST, sun_dir, 50);
light += lSky(ray.normal);
return light * ray.mat.col;
}
#endif // LIBGARBAGE_INCLUDED

6
Assets/raymarched/lib/libgarbage_example.shader
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@ -52,6 +52,9 @@ Shader "CrispyPin/LibGarbageExample"
}
float3 floor_col(float3 p) {
p = rotY(p, sin(length(p.xz) * 0.2) * 0.2);
p.x += smoothstep(0, 0.5, fmod(_Time.x, 1)) * 2;
p.z += smoothstep(0.5, 1, fmod(_Time.x, 1)) * 2;
return lerp(0.08,
checkers(p - 1, 0.06, 0.12, 2),
smoothstep(64, 0, length(p))
@ -92,8 +95,7 @@ Shader "CrispyPin/LibGarbageExample"
if (ray.missed) {
if (ray.dir.y >= 0) {
return lRenderSky(ray.dir, sun_dir);
} else
{
} else {
float3 cam = ray.start;
cam.y += 2.5;
float3 dir = ray.dir;

11
Assets/raymarched/lib/libgarbage_lighting.cginc
View file

@ -3,18 +3,17 @@
// common lighting operations
// --------------------------------
float3 lRenderSun(float3 ray_dir, float3 sun_dir) {
float3 lRenderSun(float3 ray_dir, float3 sun_dir, float3 sun_col = float3(0.8, 0.4, 0.1)) {
float alignment = min(acos(dot(ray_dir, sun_dir)), 1);
float sun_amount = smax(min(0.03 / alignment, 5) - 0.06, 0, 0.15);
return sun_amount* float3(0.8, 0.4, 0.1);
float sun_amount = pow(0.025/alignment, 3);
return sun_amount * sun_col;
}
// a basic procedural sky
float3 lRenderSky(float3 ray_dir, float3 sun_dir) {
float3 rendered_sun = lRenderSun(ray_dir, sun_dir);
// float3 rendered_sun = max(0, pow(dot(ray_dir, sun_dir) + 0.4, 10)-28) * float3(0.8, 0.4, 0);
return float3(0.7, 0.75, 0.8) - abs(ray_dir.y) * 0.5 + rendered_sun;
// return rendered_sun;
float a = 1 - abs(ray_dir.y);
return lerp(float3(0.3, 0.3, 0.7), float3(0.6, 0.7, 0.9), a) + rendered_sun;
}
//calculate sky light