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Reflection smearing

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This commit is contained in:
Joshua Barretto 2022-12-31 19:19:52 +00:00
parent 1f2d56c032
commit 0067825187
2 changed files with 19 additions and 2 deletions
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18
assets/voxygen/shaders/clouds-frag.glsl
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@ -191,13 +191,27 @@ void main() {
}
#endif
new_uv = clamp(new_uv, vec2(0), vec2(1));
#ifdef EXPERIMENTAL_SMEARREFLECTIONS
const float SMEAR_FRAC = 0.2;
vec2 anew_uv = abs(new_uv - 0.5) * 2;
new_uv = mix(
anew_uv,
1.0 - SMEAR_FRAC + (1.0 - 1.0 / (1.0 + (anew_uv - 1.0 + SMEAR_FRAC))) * SMEAR_FRAC,
lessThan(vec2(1.0 - SMEAR_FRAC), anew_uv)
) * sign(new_uv - 0.5) * 0.5 + 0.5;
#else
new_uv = clamp(new_uv, vec2(0), vec2(1));
#endif
vec3 new_wpos = wpos_at(new_uv);
float new_dist = distance(new_wpos, cam_pos.xyz);
float merge = min(
// Off-screen merge factor
clamp((1.0 - max(abs(new_uv.y - 0.5), abs(new_uv.x - 0.5)) * 2) * 8.0, 0, 1),
#ifdef EXPERIMENTAL_SMEARREFLECTIONS
1.0,
#else
clamp((1.0 - max(abs(new_uv.y - 0.5), abs(new_uv.x - 0.5)) * 2) * 6.0, 0, 1),
#endif
// Depth merge factor
clamp((new_dist - dist * 0.5) / (dist * 0.5), 0.0, 1.0)
);

3
voxygen/src/render/mod.rs
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@ -531,4 +531,7 @@ pub enum ExperimentalShader {
ViewNormals,
/// Show gbuffer materials.
ViewMaterials,
/// Rather than fading out screen-space reflections at view space borders,
/// smear screen space to cover the reflection vector.
SmearReflections,
}