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Use linear interpolation instead of abrupt transitions for groundcover lighting

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This commit is contained in:
Andrei Kortunov 2020-11-22 10:17:20 +04:00
parent 14cf0ce1dc
commit 5124e81348
1 changed files with 14 additions and 5 deletions
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19
files/shaders/lighting.glsl
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@ -14,11 +14,20 @@ void perLight(out vec3 ambientOut, out vec3 diffuseOut, int lightIndex, vec3 vie
lambert = max(lambert, 0.0);
#else
{
// might need to be < 0 depending on direction of viewPos
if (dot(viewPos, viewNormal.xyz) > 0)
lambert = -lambert;
if (lambert < 0)
lambert *= -0.3;
float cosine = dot(normalize(viewPos), normalize(viewNormal.xyz));
if (lambert >= 0.0)
cosine = -cosine;
float mult = 1.0;
float divisor = 8.0;
if (cosine < 0.0 && cosine >= -1.0/divisor)
mult = mix(1.0, 0.3, -cosine*divisor);
else if (cosine < -1.0/divisor)
mult = 0.3;
lambert *= mult;
lambert = abs(lambert);
}
#endif
diffuseOut = gl_LightSource[lightIndex].diffuse.xyz * lambert;