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Model ubershader retains some glossiness due to sky irradiance even in indirect light

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Thorsten Renk 2014-03-14 11:02:18 +02:00
parent 35d841adf5
commit 26836af986
1 changed files with 19 additions and 3 deletions
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22
Shaders/ubershader-lightfield.frag
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@ -127,6 +127,7 @@ void main (void)
vec3 mixedcolor;
vec3 N = vec3(0.0,0.0,1.0);
float pf = 0.0;
float pf1 = 0.0;
///some generic light scattering parameters
vec3 shadedFogColor = vec3(0.65, 0.67, 0.78);
vec3 moonLightColor = vec3 (0.095, 0.095, 0.15) * moonlight;
@ -244,10 +245,25 @@ void main (void)
nDotHV = max(0.0, dot(-N, normalize(gl_LightSource[0].halfVector.xyz)));
}
float nDotVP1 = 0.0;
float nDotHV1 = 0.0;
// try specular reflection of sky irradiance
nDotVP1 = max(0.0, dot(N, up));
nDotHV1 = max(0.0, dot(N, normalize(normalize(up) + normalize(-vertVec))));
if (nDotVP == 0.0)
pf = 0.0;
{pf = 0.0;}
else
pf = pow(nDotHV, gl_FrontMaterial.shininess);
{pf = pow(nDotHV, gl_FrontMaterial.shininess);}
if (nDotVP1 == 0.0)
{pf1 = 0.0;}
else
{pf1 = pow(nDotHV1, 0.5*gl_FrontMaterial.shininess);}
vec3 relPos;
if (cloud_shadow_flag == 1)
@ -257,7 +273,7 @@ void main (void)
}
vec4 Diffuse = light_diffuse * nDotVP;
vec4 Specular = gl_FrontMaterial.specular * light_diffuse * pf;
vec4 Specular = gl_FrontMaterial.specular * light_diffuse * pf + gl_FrontMaterial.specular * light_ambient * pf1;
vec4 color = gl_Color + Diffuse * gl_FrontMaterial.diffuse;
color = clamp( color, 0.0, 1.0 );