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Improving shadows

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bloeys
2024-04-14 03:45:48 +04:00
parent be85e20024
commit b718611149
2 changed files with 33 additions and 13 deletions
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10
res/shaders/simple.glsl
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@ -99,7 +99,7 @@ vec4 emissionTexColor;
vec3 normalizedVertNorm;
vec3 viewDir;
float CalcShadow(sampler2D shadowMap)
float CalcShadow(sampler2D shadowMap, vec3 lightDir)
{
// Move from clip space to NDC
vec3 projCoords = fragPosDirLight.xyz / fragPosDirLight.w;
@ -113,9 +113,13 @@ float CalcShadow(sampler2D shadowMap)
// Closest depth is the closest depth value from the light's perspective
float closestDepth = texture(shadowMap, projCoords.xy).r;
// Bias in the range [0.005, 0.05] depending on the angle, where a higher
// angle gives a higher bias, as shadow acne gets worse with angle
float bias = max(0.05 * (1.0 - dot(normalizedVertNorm, lightDir)), 0.005);
// If our depth is larger than the lights closest depth,
// then there is something closer to the light than us, and so we are in shadow
float shadow = currentDepth > closestDepth ? 1.0 : 0.0;
float shadow = currentDepth - bias > closestDepth ? 1.0 : 0.0;
return shadow;
}
@ -134,7 +138,7 @@ vec3 CalcDirLight()
vec3 finalSpecular = specularAmount * dirLight.specularColor * specularTexColor.rgb;
// Shadow
float shadow = CalcShadow(dirLight.shadowMap);
float shadow = CalcShadow(dirLight.shadowMap, lightDir);
return (finalDiffuse + finalSpecular) * (1.0 - shadow);
}