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Merge pull request #2785 from Capostrophic/underwaterfog

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Don't radialize underwater fog
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Andrei Kortunov 2020-04-19 09:06:28 +04:00 committed by GitHub
commit 7aca6d72e4
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1 changed files with 9 additions and 6 deletions
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files/shaders/water_fragment.glsl
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@ -203,17 +203,20 @@ void main(void)
float ior = (cameraPos.z>0.0)?(1.333/1.0):(1.0/1.333); // air to water; water to air float ior = (cameraPos.z>0.0)?(1.333/1.0):(1.0/1.333); // air to water; water to air
float fresnel = clamp(fresnel_dielectric(vVec, normal, ior), 0.0, 1.0); float fresnel = clamp(fresnel_dielectric(vVec, normal, ior), 0.0, 1.0);
float radialise = 1.0;
#if @radialFog #if @radialFog
float radialDepth = distance(position.xyz, cameraPos); float radialDepth = distance(position.xyz, cameraPos);
float radialize = radialDepth / linearDepth; // TODO: Figure out how to properly radialise refraction depth and thus underwater fog
#else // while avoiding oddities when the water plane is close to the clipping plane
float radialize = 1.0; // radialise = radialDepth / linearDepth;
#endif #endif
vec2 screenCoordsOffset = normal.xy * REFL_BUMP; vec2 screenCoordsOffset = normal.xy * REFL_BUMP;
#if REFRACTION #if REFRACTION
float depthSample = linearizeDepth(texture2D(refractionDepthMap,screenCoords).x) * radialize; float depthSample = linearizeDepth(texture2D(refractionDepthMap,screenCoords).x) * radialise;
float depthSampleDistorted = linearizeDepth(texture2D(refractionDepthMap,screenCoords-screenCoordsOffset).x) * radialize; float depthSampleDistorted = linearizeDepth(texture2D(refractionDepthMap,screenCoords-screenCoordsOffset).x) * radialise;
float surfaceDepth = linearizeDepth(gl_FragCoord.z) * radialize; float surfaceDepth = linearizeDepth(gl_FragCoord.z) * radialise;
float realWaterDepth = depthSample - surfaceDepth; // undistorted water depth in view direction, independent of frustum float realWaterDepth = depthSample - surfaceDepth; // undistorted water depth in view direction, independent of frustum
screenCoordsOffset *= clamp(realWaterDepth / BUMP_SUPPRESS_DEPTH,0,1); screenCoordsOffset *= clamp(realWaterDepth / BUMP_SUPPRESS_DEPTH,0,1);
#endif #endif