ribbon_sm4.hlsl.h

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#define SRC(...) #__VA_ARGS__
SRC(

 struct PSInput
 {
 float4 position : SV_POSITION;
 float3 vEC : TEXCOORD;
 };

 struct UBO
 {
 float4x4 modelViewProj;
 float2 Outputsize;
 float time;
 };
 uniform UBO global;

 float iqhash(float n)
 {
 return frac(sin(n) * 43758.5453);
 }

 float noise(float3 x)
 {
 float3 p = floor(x);
 float3 f = frac(x);
 f = f * f * (3.0 - 2.0 * f);
 float n = p.x + p.y * 57.0 + 113.0 * p.z;
 return lerp(lerp(lerp(iqhash(n), iqhash(n + 1.0), f.x),
 lerp(iqhash(n + 57.0), iqhash(n + 58.0), f.x), f.y),
 lerp(lerp(iqhash(n + 113.0), iqhash(n + 114.0), f.x),
 lerp(iqhash(n + 170.0), iqhash(n + 171.0), f.x), f.y), f.z);
 }

 float xmb_noise2(float3 x)
 {
 return cos(x.z * 4.0) * cos(x.z + global.time / 10.0 + x.x);
 }

 PSInput VSMain(float2 position : POSITION)
 {
 float3 v = float3(position.x, 0.0, 1.0-position.y);
 float3 v2 = v;
 float3 v3 = v;

 v.y = xmb_noise2(v2) / 8.0;

 v3.x -= global.time / 5.0;
 v3.x /= 4.0;

 v3.z -= global.time / 10.0;
 v3.y -= global.time / 100.0;

 v.z -= noise(v3 * 7.0) / 15.0;
 v.y -= noise(v3 * 7.0) / 15.0 + cos(v.x * 2.0 - global.time / 2.0) / 5.0 - 0.3;
 v.y = -v.y;

 PSInput output;
 output.position = float4(v.xy, 0.0, 1.0);
 output.vEC = v;
 return output;
 }

 float4 PSMain(PSInput input) : SV_TARGET
 {
 const float3 up = float3(0.0, 0.0, 1.0);
 float3 x = ddx(input.vEC);
 float3 y = ddy(input.vEC);
 float3 normal = normalize(cross(x, y));
 float c = 1.0 - dot(normal, up);
 c = (1.0 - cos(c * c)) / 13.0;
 return float4(c, c, c, 1.0);
 // return float4(c, c, c, c);
 // return float4(1.0, 1.0, 1.0, c);
 // return float4(1.0, 0.0, 1.0, 1.0);
 };
)