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升级6.4.升级水，升级天气

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This commit is contained in:
Bob.Song
2026-04-05 00:26:54 +08:00
parent 63bc9b5536
commit 5f7cbfb713
635 changed files with 34718 additions and 22567 deletions
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17
Packages/com.waveharmonic.crest/Runtime/Shaders/Surface/Fresnel.hlsl
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@@ -8,14 +8,14 @@
m_CrestNameSpace
float CalculateFresnelReflectionCoefficient(const float i_CosineTheta, const float i_RefractiveIndexOfAir, const float i_RefractiveIndexOfWater)
float CalculateFresnelReflectionCoefficient(const float i_CosineTheta, const float i_RefractiveIndexOfAir, const float i_RefractiveIndexOfWater, const float i_Fresnel)
{
// Fresnel calculated using Schlick's approximation.
// See: http://www.cs.virginia.edu/~jdl/bib/appearance/analytic%20models/schlick94b.pdf
// Reflectance at facing angle.
float R_0 = (i_RefractiveIndexOfAir - i_RefractiveIndexOfWater) / (i_RefractiveIndexOfAir + i_RefractiveIndexOfWater);
R_0 *= R_0;
const float R_theta = R_0 + (1.0 - R_0) * pow(max(0., 1.0 - i_CosineTheta), 5.0);
const float R_theta = R_0 + (1.0 - R_0) * pow(max(0., 1.0 - i_CosineTheta), i_Fresnel);
return R_theta;
}
@@ -24,6 +24,7 @@ void ApplyReflectionUnderwater(
const half3 i_NormalWS,
const float i_RefractiveIndexOfAir,
const float i_RefractiveIndexOfWater,
const float i_Fresnel,
out float o_LightTransmitted,
out float o_LightReflected
) {
@@ -35,7 +36,7 @@ void ApplyReflectionUnderwater(
// Have to calculate the incident angle of incoming light to water.
// Surface based on how it would be refracted so as to hit the camera.
const float cosIncomingAngle = cos(asin(clamp((i_RefractiveIndexOfWater * sin(acos(cosOutgoingAngle))) / i_RefractiveIndexOfAir, -1.0, 1.0)));
const float reflectionCoefficient = CalculateFresnelReflectionCoefficient(cosIncomingAngle, i_RefractiveIndexOfAir, i_RefractiveIndexOfWater);
const float reflectionCoefficient = CalculateFresnelReflectionCoefficient(cosIncomingAngle, i_RefractiveIndexOfAir, i_RefractiveIndexOfWater, i_Fresnel);
o_LightTransmitted = (1.0 - reflectionCoefficient);
o_LightTransmitted = max(o_LightTransmitted, 0.0);
}
@@ -44,7 +45,7 @@ void ApplyReflectionUnderwater(
{
// Angle of incident is angle of reflection.
const float cosIncomingAngle = cosOutgoingAngle;
const float reflectionCoefficient = CalculateFresnelReflectionCoefficient(cosIncomingAngle, i_RefractiveIndexOfAir, i_RefractiveIndexOfWater);
const float reflectionCoefficient = CalculateFresnelReflectionCoefficient(cosIncomingAngle, i_RefractiveIndexOfAir, i_RefractiveIndexOfWater, i_Fresnel);
o_LightReflected = reflectionCoefficient;
}
}
@@ -57,15 +58,14 @@ void ApplyFresnel
const float i_RefractiveIndexOfAir,
const float i_RefractiveIndexOfWater,
const float i_TirIntensity,
const float i_Fresnel,
out float o_LightTransmitted,
out float o_LightReflected
)
{
o_LightTransmitted = 1.0;
if (i_IsUnderwater)
{
ApplyReflectionUnderwater(i_ViewDirectionWS, i_NormalWS, i_RefractiveIndexOfAir, i_RefractiveIndexOfWater, o_LightTransmitted, o_LightReflected);
ApplyReflectionUnderwater(i_ViewDirectionWS, i_NormalWS, i_RefractiveIndexOfAir, i_RefractiveIndexOfWater, i_Fresnel, o_LightTransmitted, o_LightReflected);
// Limit how strong TIR is. Not sure if this is the best way but it seems to work gracefully.
o_LightTransmitted = max(o_LightTransmitted, 1.0 - i_TirIntensity);
o_LightReflected = min(o_LightReflected, i_TirIntensity);
@@ -74,7 +74,8 @@ void ApplyFresnel
{
const float cosAngle = max(dot(i_NormalWS, i_ViewDirectionWS), 0.0);
// Hardcode water IOR for above surface.
o_LightReflected = CalculateFresnelReflectionCoefficient(cosAngle, i_RefractiveIndexOfAir, 1.33);
o_LightReflected = CalculateFresnelReflectionCoefficient(cosAngle, i_RefractiveIndexOfAir, 1.33, i_Fresnel);
o_LightTransmitted = 1.0 - o_LightReflected;
}
}