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Various changes, fixes and features

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This commit is contained in:
Gefüllte Taubenbrust 2024-10-27 21:36:40 +01:00
parent b6c099073f
commit 4b88a32c1c
17 changed files with 409 additions and 261 deletions
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12
client/shaders/nodes_shader/opengl_vertex.glsl
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@ -54,6 +54,8 @@ uniform float xyPerspectiveBias0;
uniform float xyPerspectiveBias1;
uniform float zPerspectiveBias;
uniform vec3 beta_r0_l;
#ifdef ENABLE_DYNAMIC_SHADOWS
vec4 getRelativePosition(in vec4 position)
@ -146,19 +148,17 @@ float snoise(vec3 p)
#endif
#ifdef ENABLE_TINTED_SUNLIGHT
vec3 getDirectLightScatteringAtGround(vec3 v_LightDirection)
{
// Based on talk at 2002 Game Developers Conference by Naty Hoffman and Arcot J. Preetham
const float beta_r0 = 1e-5; // Rayleigh scattering beta
// These factors are calculated based on expected value of scattering factor of 1e-5
// for Nitrogen at 532nm (green), 2e25 molecules/m3 in atmosphere
const vec3 beta_r0_l = vec3(3.3362176e-01, 8.75378289198826e-01, 1.95342379700656) * beta_r0; // wavelength-dependent scattering
const float atmosphere_height = 15000.; // height of the atmosphere in meters
// sun/moon light at the ground level, after going through the atmosphere
return exp(-beta_r0_l * atmosphere_height / (1e-5 - dot(v_LightDirection, vec3(0., 1., 0.))));
return exp(-beta_r0_l * beta_r0 * atmosphere_height / (1e-5 - dot(v_LightDirection, vec3(0., 1., 0.))));
}
#endif
void main(void)
{
@ -280,7 +280,9 @@ void main(void)
adj_shadow_strength = f_shadow_strength *
mtsmoothstep(0.21, 0.26, f_timeofday) *
(1.0 - mtsmoothstep(0.743, 0.793, f_timeofday));
#ifdef ENABLE_TINTED_SUNLIGHT
sunTint = mix(vec3(1.0), getDirectLightScatteringAtGround(v_LightDirection), min(1.0, 4.0 * adj_shadow_strength));
#endif
}
}
#endif