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DOUBLE CLOUD LAYER TEST VERSION. make ambient sss brightness slider work.

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Xonk
2023-11-22 02:01:06 -05:00
parent eabc47d999
commit d90a15e694
7 changed files with 229 additions and 232 deletions
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29
shaders/lib/sky_gradient.glsl
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@ -99,6 +99,35 @@ vec4 texture2D_bicubic(sampler2D tex, vec2 uv)
g1(fuv.y) * (g0x * texture2D(tex, p2) +
g1x * texture2D(tex, p3));
}
vec4 texture2D_bicubic_offset(sampler2D tex, vec2 uv, float noise)
{
float offsets = noise * (2.0 * 3.141592653589793238462643383279502884197169);
vec2 circleOffsets = vec2(sin(offsets), cos(offsets));
vec4 texelSize = vec4(texelSize,1.0/texelSize);
uv = uv*texelSize.zw;
vec2 iuv = floor( uv + circleOffsets );
vec2 fuv = fract( uv + circleOffsets );
float g0x = g0(fuv.x);
float g1x = g1(fuv.x);
float h0x = h0(fuv.x);
float h1x = h1(fuv.x);
float h0y = h0(fuv.y);
float h1y = h1(fuv.y);
vec2 p0 = (vec2(iuv.x + h0x, iuv.y + h0y) - 0.5) * (texelSize.xy);
vec2 p1 = (vec2(iuv.x + h1x, iuv.y + h0y) - 0.5) * (texelSize.xy);
vec2 p2 = (vec2(iuv.x + h0x, iuv.y + h1y) - 0.5) * (texelSize.xy);
vec2 p3 = (vec2(iuv.x + h1x, iuv.y + h1y) - 0.5) * (texelSize.xy);
return (g0(fuv.y) * (g0x * texture2D(tex, p0) +
g1x * texture2D(tex, p1)) +
g1(fuv.y) * (g0x * texture2D(tex, p2) +
g1x * texture2D(tex, p3)));
}
vec2 sphereToCarte(vec3 dir) {
float lonlat = atan(-dir.x, -dir.z);
return vec2(lonlat * (0.5/pi) +0.5,0.5*dir.y+0.5);