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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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54
client/shaders/object_shader/opengl_vertex.glsl
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@ -105,33 +105,35 @@ void main(void)
#ifdef ENABLE_DYNAMIC_SHADOWS
vec3 nNormal = normalize(vNormal);
cosLight = dot(nNormal, -v_LightDirection);
if (f_shadow_strength > 0.0) {
vec3 nNormal = normalize(vNormal);
cosLight = dot(nNormal, -v_LightDirection);
// Calculate normal offset scale based on the texel size adjusted for
// curvature of the SM texture. This code must be change together with
// getPerspectiveFactor or any light-space transformation.
vec3 eyeToVertex = worldPosition - eyePosition + cameraOffset;
// Distance from the vertex to the player
float distanceToPlayer = length(eyeToVertex - v_LightDirection * dot(eyeToVertex, v_LightDirection)) / f_shadowfar;
// perspective factor estimation according to the
float perspectiveFactor = distanceToPlayer * bias0 + bias1;
float texelSize = f_shadowfar * perspectiveFactor * perspectiveFactor /
(f_textureresolution * bias1 - perspectiveFactor * bias0);
float slopeScale = clamp(pow(1.0 - cosLight*cosLight, 0.5), 0.0, 1.0);
normalOffsetScale = texelSize * slopeScale;
if (f_timeofday < 0.2) {
adj_shadow_strength = f_shadow_strength * 0.5 *
(1.0 - mtsmoothstep(0.18, 0.2, f_timeofday));
} else if (f_timeofday >= 0.8) {
adj_shadow_strength = f_shadow_strength * 0.5 *
mtsmoothstep(0.8, 0.83, f_timeofday);
} else {
adj_shadow_strength = f_shadow_strength *
mtsmoothstep(0.20, 0.25, f_timeofday) *
(1.0 - mtsmoothstep(0.7, 0.8, f_timeofday));
// Calculate normal offset scale based on the texel size adjusted for
// curvature of the SM texture. This code must be change together with
// getPerspectiveFactor or any light-space transformation.
vec3 eyeToVertex = worldPosition - eyePosition + cameraOffset;
// Distance from the vertex to the player
float distanceToPlayer = length(eyeToVertex - v_LightDirection * dot(eyeToVertex, v_LightDirection)) / f_shadowfar;
// perspective factor estimation according to the
float perspectiveFactor = distanceToPlayer * bias0 + bias1;
float texelSize = f_shadowfar * perspectiveFactor * perspectiveFactor /
(f_textureresolution * bias1 - perspectiveFactor * bias0);
float slopeScale = clamp(pow(1.0 - cosLight*cosLight, 0.5), 0.0, 1.0);
normalOffsetScale = texelSize * slopeScale;
if (f_timeofday < 0.2) {
adj_shadow_strength = f_shadow_strength * 0.5 *
(1.0 - mtsmoothstep(0.18, 0.2, f_timeofday));
} else if (f_timeofday >= 0.8) {
adj_shadow_strength = f_shadow_strength * 0.5 *
mtsmoothstep(0.8, 0.83, f_timeofday);
} else {
adj_shadow_strength = f_shadow_strength *
mtsmoothstep(0.20, 0.25, f_timeofday) *
(1.0 - mtsmoothstep(0.7, 0.8, f_timeofday));
}
f_normal_length = length(vNormal);
}
f_normal_length = length(vNormal);
#endif
}