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- remove shadow acne when dynlights perfectly align with planes

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This commit is contained in:
Magnus Norddahl 2018-12-23 15:13:38 +01:00
parent 2cd1734de3
commit 0c4602507e
1 changed files with 1 additions and 0 deletions
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wadsrc/static/shaders/glsl/main.fp
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@ -334,6 +334,7 @@ float shadowmapAttenuation(vec4 lightpos, float shadowIndex)
return 1.0; // No shadowmap available for this light
vec3 planePoint = pixelpos.xyz - lightpos.xyz;
planePoint += 0.01; // nudge light position slightly as Doom maps tend to have their lights perfectly aligned with planes
if (dot(planePoint.xz, planePoint.xz) < 1.0)
return 1.0; // Light is too close