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animate water

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Crispy 2023-02-12 16:50:08 +01:00
parent e70b55ff58
commit 3bbd3d9aaf
1 changed files with 12 additions and 7 deletions
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19
Assets/sunset_box/sunset_env_dynamic.shader
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@ -22,6 +22,7 @@
_StarTint ("Star tint", Range(0, 1)) = 0.4 _StarTint ("Star tint", Range(0, 1)) = 0.4
[Header(Water)] [Header(Water)]
_WaterCol ("Water color", Color) = (0.03, 0.08, 0.12, 1.0) _WaterCol ("Water color", Color) = (0.03, 0.08, 0.12, 1.0)
[NoScaleOffset]
_WaterSurface ("Surface Normal", 2D) = "white" {} _WaterSurface ("Surface Normal", 2D) = "white" {}
_Temp ("Wave scale", Range(0, 1)) = 0 _Temp ("Wave scale", Range(0, 1)) = 0
[Header(Debug)] [Header(Debug)]
@ -90,6 +91,16 @@
return o; return o;
} }
fixed3 get_water_normal(float2 pos) {
float3 normal = 0.0;
float t1 = _Time.x * 0.2;
normal += (tex2D(_WaterSurface, pos * 1.0 + float2(t1, t1*0.5)) - 0.5);
float t2 = _Time.x * 0.5;
normal += (tex2D(_WaterSurface, pos * 0.2 + float2(t2*0.5, t2)) - 0.5) * 0.25;
return normalize(normal.zxy);
}
fixed4 frag (v2f i) : SV_Target fixed4 frag (v2f i) : SV_Target
{ {
float water_mod = 0.0; float water_mod = 0.0;
@ -104,7 +115,7 @@
0.0, 0.0,
camera_local_pos.z - camera_local_pos.y / (real_dir.y / real_dir.z) camera_local_pos.z - camera_local_pos.y / (real_dir.y / real_dir.z)
); );
float3 water_normal = normalize((tex2D(_WaterSurface, surface_pos.xz * _Temp) - 0.5).zxy); float3 water_normal = get_water_normal(surface_pos.xz);
dir = reflect(dir, water_normal); dir = reflect(dir, water_normal);
water_mod = dot(dir, water_normal); water_mod = dot(dir, water_normal);
@ -163,13 +174,7 @@
float sun_amount = max(min(_SunRadius/alignment * sun_gradient, 5) - _SunCutoff, 0); float sun_amount = max(min(_SunRadius/alignment * sun_gradient, 5) - _SunCutoff, 0);
col = lerp(col, _SunCol, sun_amount); col = lerp(col, _SunCol, sun_amount);
col = lerp(col, _WaterCol, water_mod); col = lerp(col, _WaterCol, water_mod);
// debug, this should not be visible
if (dir.y < 0) {
return fixed4(1, 0, 0, 1);
}
return col; return col;
} }
ENDCG ENDCG