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Add API to control shadow intensity from the game/mod (#11944)

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* Also Disable shadows when sun/moon is hidden. Fixes #11972.
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x2048 2022-03-26 16:58:26 +01:00 • committed by GitHub
parent 8d55702d13
commit 0f25fa7af6
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24 changed files with 375 additions and 169 deletions
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87
client/shaders/nodes_shader/opengl_fragment.glsl
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@ -16,6 +16,7 @@ uniform float animationTimer;
uniform float f_textureresolution;
uniform mat4 m_ShadowViewProj;
uniform float f_shadowfar;
uniform float f_shadow_strength;
varying float normalOffsetScale;
varying float adj_shadow_strength;
varying float cosLight;
@ -483,55 +484,57 @@ void main(void)
vec4 col = vec4(color.rgb * varColor.rgb, 1.0);
#ifdef ENABLE_DYNAMIC_SHADOWS
float shadow_int = 0.0;
vec3 shadow_color = vec3(0.0, 0.0, 0.0);
vec3 posLightSpace = getLightSpacePosition();
if (f_shadow_strength > 0.0) {
float shadow_int = 0.0;
vec3 shadow_color = vec3(0.0, 0.0, 0.0);
vec3 posLightSpace = getLightSpacePosition();
float distance_rate = (1 - pow(clamp(2.0 * length(posLightSpace.xy - 0.5),0.0,1.0), 20.0));
float f_adj_shadow_strength = max(adj_shadow_strength-mtsmoothstep(0.9,1.1, posLightSpace.z ),0.0);
float distance_rate = (1 - pow(clamp(2.0 * length(posLightSpace.xy - 0.5),0.0,1.0), 20.0));
float f_adj_shadow_strength = max(adj_shadow_strength-mtsmoothstep(0.9,1.1, posLightSpace.z ),0.0);
if (distance_rate > 1e-7) {
if (distance_rate > 1e-7) {
#ifdef COLORED_SHADOWS
vec4 visibility;
if (cosLight > 0.0)
visibility = getShadowColor(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
visibility = vec4(1.0, 0.0, 0.0, 0.0);
shadow_int = visibility.r;
shadow_color = visibility.gba;
vec4 visibility;
if (cosLight > 0.0)
visibility = getShadowColor(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
visibility = vec4(1.0, 0.0, 0.0, 0.0);
shadow_int = visibility.r;
shadow_color = visibility.gba;
#else
if (cosLight > 0.0)
shadow_int = getShadow(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
shadow_int = 1.0;
if (cosLight > 0.0)
shadow_int = getShadow(ShadowMapSampler, posLightSpace.xy, posLightSpace.z);
else
shadow_int = 1.0;
#endif
shadow_int *= distance_rate;
shadow_int = clamp(shadow_int, 0.0, 1.0);
shadow_int *= distance_rate;
shadow_int = clamp(shadow_int, 0.0, 1.0);
}
// turns out that nightRatio falls off much faster than
// actual brightness of artificial light in relation to natual light.
// Power ratio was measured on torches in MTG (brightness = 14).
float adjusted_night_ratio = pow(max(0.0, nightRatio), 0.6);
// Apply self-shadowing when light falls at a narrow angle to the surface
// Cosine of the cut-off angle.
const float self_shadow_cutoff_cosine = 0.035;
if (f_normal_length != 0 && cosLight < self_shadow_cutoff_cosine) {
shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine);
shadow_color = mix(vec3(0.0), shadow_color, min(cosLight, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine);
}
shadow_int *= f_adj_shadow_strength;
// calculate fragment color from components:
col.rgb =
adjusted_night_ratio * col.rgb + // artificial light
(1.0 - adjusted_night_ratio) * ( // natural light
col.rgb * (1.0 - shadow_int * (1.0 - shadow_color)) + // filtered texture color
dayLight * shadow_color * shadow_int); // reflected filtered sunlight/moonlight
}
// turns out that nightRatio falls off much faster than
// actual brightness of artificial light in relation to natual light.
// Power ratio was measured on torches in MTG (brightness = 14).
float adjusted_night_ratio = pow(max(0.0, nightRatio), 0.6);
// Apply self-shadowing when light falls at a narrow angle to the surface
// Cosine of the cut-off angle.
const float self_shadow_cutoff_cosine = 0.035;
if (f_normal_length != 0 && cosLight < self_shadow_cutoff_cosine) {
shadow_int = max(shadow_int, 1 - clamp(cosLight, 0.0, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine);
shadow_color = mix(vec3(0.0), shadow_color, min(cosLight, self_shadow_cutoff_cosine)/self_shadow_cutoff_cosine);
}
shadow_int *= f_adj_shadow_strength;
// calculate fragment color from components:
col.rgb =
adjusted_night_ratio * col.rgb + // artificial light
(1.0 - adjusted_night_ratio) * ( // natural light
col.rgb * (1.0 - shadow_int * (1.0 - shadow_color)) + // filtered texture color
dayLight * shadow_color * shadow_int); // reflected filtered sunlight/moonlight
#endif
#if ENABLE_TONE_MAPPING