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Code Issues Releases Wiki Activity

fix Fresnel term

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XProger 2018-08-28 19:10:16 +03:00
parent f46d638fe7
commit ab183997cf
1 changed files with 4 additions and 4 deletions
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8
src/shaders/water.glsl
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@ -79,9 +79,9 @@ uniform sampler2D sNormal;
#define PI 3.141592653589793
float calcFresnel(float NdotL, float fbias) {
float f = 1.0 - NdotL;
return clamp(fbias + (1.0 - fbias) * (f * f), 0.0, 1.0);
float calcFresnel(float VoH, float f0) {
float f = pow(1.0 - VoH, 5.0);
return f + f0 * (1.0f - f);
}
vec3 applyFog(vec3 color, vec3 fogColor, float factor) {
@ -189,7 +189,7 @@ uniform sampler2D sNormal;
vec4 refr = vec4(mix(refrA.xyz, refrB.xyz, refrA.w), 1.0);
vec4 refl = texture2D(sReflect, vec2(tc.x, 1.0 - tc.y) + dudv * uParam.w);
float fresnel = calcFresnel(dot(normal, viewVec), 0.04);
float fresnel = calcFresnel(max(0.0, dot(normal, viewVec)), 0.12);
vec4 color = mix(refr, refl, fresnel) + spec * 1.5;