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Improve shadow filters (#12195)

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* Rewrite shadow filtering for the new distortion
* Calculate penumbra radius using a single sample
* Avoid peter-panning effect due to filtering of short shadows
* Add adaptive filter quality for soft shadows
* Avoid sharp shadows on surfaces without normals (e.g. plants)
* Increase default and maximum soft shadow radius
* Make line numbers in shader errors match the code
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x2048 2022-05-21 16:49:30 +02:00 • committed by GitHub
parent a4ef62f5b2
commit dc45b85a54
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9 changed files with 131 additions and 220 deletions
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client/shaders/object_shader/opengl_vertex.glsl
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@ -30,6 +30,7 @@ centroid varying vec2 varTexCoord;
varying float adj_shadow_strength;
varying float f_normal_length;
varying vec3 shadow_position;
varying float perspective_factor;
#endif
varying vec3 eyeVec;
@ -162,6 +163,7 @@ void main(void)
shadow_position = applyPerspectiveDistortion(m_ShadowViewProj * mWorld * (inVertexPosition + vec4(normalOffsetScale * nNormal, 0.0))).xyz;
shadow_position.z -= z_bias;
perspective_factor = pFactor;
if (f_timeofday < 0.2) {
adj_shadow_strength = f_shadow_strength * 0.5 *