port from perforce
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184
hgplus/obliterator/gpu/b288.hlsl
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184
hgplus/obliterator/gpu/b288.hlsl
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// Shader selector
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static const uint P = DEBUG_SHADER_ID;
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// Random seed (global)
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static uint rndSeed = 0, activeScene = 0;
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// Constants
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static const float PI = 3.14159265, PHI = sqrt(5)*0.5 + 0.5, INFINITY = 1000, pixelRadius = 0.001;
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//[
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cbuffer _1 : register(b0) {//]
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float X, Y, Z, W;
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//float3 viewPosition;
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//float3 viewDirection;
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//float3 viewUp;
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//float dummy0, dummy1, dummy2;
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//float dummy5;
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//float dummy3;
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//float dummy4;
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//[
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}//]
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SamplerState sampler0 : register(s0);
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Texture2D tex[8] : register(t0);
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RWTexture2D<float4> out0 : register(u0);
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RWBuffer<uint4> mcp0 : register(u1);
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uint hash(uint x) {
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x += x << 10, x ^= x >> 6, x += x << 3, x ^= x >> 11, x += x << 15;
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return x;
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}
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float rnd() {
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return asfloat((rndSeed = hash(rndSeed) & 0x007fffff) | 0x3f800000) - 1;
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}
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float smoothstepQuintic(float edge0, float edge1, float x) {
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x = saturate((x - edge0) / (edge1 - edge0));
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return x*x*x*(x*(x * 6 - 15) + 10);
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}
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//---
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// Sphere tracing
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//---
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float fBoxNonEuclidean(float3 p, float3 b) {
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float3 d = abs(p) - b;
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return max(max(d.x, d.y), d.z);
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}
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float fLasBlob(float3 p) {
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p = abs(p);
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if (p.x < max(p.y, p.z)) p = p.yzx;
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if (p.x < max(p.y, p.z)) p = p.yzx;
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float b = max(max(max(
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dot(p, normalize(float3(1, 1, 1))),
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dot(p.xz, normalize(float2(PHI + 1, 1)))),
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dot(p.yx, normalize(float2(1, PHI)))),
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dot(p.xz, normalize(float2(1, PHI))));
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float l = length(p);
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return l - 1.6125 + 0.25 * (smoothstepQuintic(0.0, 0.343, sin(acos(b / l - 0.0075))));
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}
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float F(float3 p, int evaluateMaterial) {
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return min(fLasBlob(p), -fBoxNonEuclidean(p, float3(10, 10, 10)));
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}
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float fMaterial(float3 p) {
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return F(p, 1);
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}
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float f(float3 p) {
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return F(p, 0);
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}
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float3 gradient(float3 p, float e) {
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return float3(f(p + float3(e, 0, 0)), f(p + float3(0, e, 0)), f(p + float3(0, 0, e))) - float3(f(p - float3(e, 0, 0)), f(p - float3(0, e, 0)), f(p - float3(0, 0, e)));
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}
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float2 sphereTrace(float3 o, float3 d) {
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float t = 0.0001, tmax = 30, functionSign = f(o) < 0 ? -1 : +1;
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float2 intersection = { 0, INFINITY };
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for (int i = 0; i < 80; ++i) {
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float signedRadius = functionSign * f(d*t + o);
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float radius = abs(signedRadius);
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float screenSpaceError = radius / t;
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if (screenSpaceError < intersection.y)
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intersection = float2(t, screenSpaceError);
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if (screenSpaceError < pixelRadius || t > tmax)
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break;
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t += signedRadius;
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}
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return float2(intersection.x, functionSign * max(intersection.x * intersection.y, 0.004));
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}
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//---
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// MCP Helper
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//---
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void addMcpDispatch(int divisor, int enable) {
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mcp0[++rndSeed] = int4((80 + divisor - 1) / divisor, (45 + divisor - 1) / divisor, 1, 1)*enable;
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}
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// Entry point "_0"
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[numthreads(16, 16, 1)]
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void _0(uint3 id:SV_DispatchThreadID){
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float2 resolution, sourceResolution;
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out0.GetDimensions(resolution.x, resolution.y);
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tex[0].GetDimensions(sourceResolution.x, sourceResolution.y);
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//float mipLevel = log2(sourceResolution.x / resolution.x);
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float2 tc = (id.xy + 0.5) / resolution;
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float2 sc = (tc*2 - 1) * float2(resolution.x / resolution.y, -1);
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float3 w = -float3(0, 0, -1);
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float3 v = float3(0, 1, 0);
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float3 u = cross(v, w);
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float3 o = float3(0, 0, 3);
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float3 d = normalize(mul(transpose(float3x3(u, v, w)), float3(sc / 2, -0.5 / tan((.5*3.1415)*60 / 180.))));
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float4 result = 1;
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if (P == 0) {
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// MCP
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addMcpDispatch(1, activeScene == 0 ? 1 : 0); // Scene 0
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addMcpDispatch(1, activeScene == 1 ? 1 : 0); // Scene 1
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addMcpDispatch(1, activeScene == 2 ? 1 : 0); // Scene 2
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addMcpDispatch(1, activeScene == 3 ? 1 : 0); // Scene 3
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addMcpDispatch(1, activeScene == 4 ? 1 : 0); // Scene 4
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addMcpDispatch(4, 1); // Streaks
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addMcpDispatch(1, 1); // Blur H
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addMcpDispatch(1, 1); // Blur V
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addMcpDispatch(8, 1); // Blur H
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addMcpDispatch(8, 1); // Blur V
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addMcpDispatch(32, 1); // Blur H
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addMcpDispatch(32, 1); // Blur V
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addMcpDispatch(1, 1); // Merge
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return;
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} else if (P > 0 && P < 4) {
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// Blur V (1) & Blur H (2) & Steaks (3)
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float radius = 160, sigma = radius / 3.5;
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float twoSigmaSquared = 2 * sigma * sigma;
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float2 d = (P > 1 ? float2(1, 0) : float2(0, 1)) / resolution;
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for (float i = -radius; i <= radius; ++i) {
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result += tex[0].SampleLevel(sampler0, i*d + tc, 0) *
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(P > 2 ? 1.5 * (radius - abs(i)) * (radius - abs(i)) / (radius * radius * radius) : exp(-i*i / twoSigmaSquared) / sqrt(twoSigmaSquared * PI));
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}
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} else if (P == 4) {
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// Merge
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rndSeed = id.y;
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result = tex[0].SampleLevel(sampler0, tc, 0) +
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tex[1].SampleLevel(sampler0, tc, 0) * 0.025 +
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tex[2].SampleLevel(sampler0, tc, 0) * 0.025 +
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tex[3].SampleLevel(sampler0, tc, 0) * 0.025 +
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tex[4].SampleLevel(sampler0, tc, 0) * (lerp(1, rnd(), 0.125)) * 0.25;
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// Tonemapping
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result = max(0, result*0.5);
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result = max(0, result * (result*1.28713 + 0.153229) / (result*(result + 3.33333) + 0.4));
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//result.xyz = liftGammaGain(result.xyz, float3(0, 0, 0), float3(1, 1, 1), float3(1, 1, 1));
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//color = saturation(color, 1.5);
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result = pow(result, 1 / 2.2);
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//result = float4(result.xyz, dot(result.xyz, float3(0.299, 0.587, 0.114)));
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} else if (P == 5) {
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result = frac(X) * float4(1.0, 0.111111, 0.0, 0.0) + 0.5;
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} else if (P == 6) {
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o.z += sin(X);
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float2 st = sphereTrace(o, d);
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result.xyz = normalize(gradient(d*st.x + o, 0.1))*0.5 + 0.5;
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if (isnan(dot(result.xyz, result.xyz)))
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result.xyz = float3(1000, 0, 0);
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} else if (P == 7) {
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} else if (P == 8) {
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} else if (P == 9) {
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}
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out0[id.xy] = result;
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}
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1
hgplus/obliterator/gpu/b288.inc
Normal file
1
hgplus/obliterator/gpu/b288.inc
Normal file
@@ -0,0 +1 @@
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static const uint f=0;static uint i=0,n=1;static const float z=3.14159,y=sqrt(5)*.5+.5,d=1000,m=.001;cbuffer _1:register(b0){float u,x,s,D;}SamplerState t:register(s0);Texture2D a[8]:register(t0);RWTexture2D<float4> e:register(u0);RWBuffer<uint4> r:register(u1);uint l(uint f){return f+=f<<10,f^=f>>6,f+=f<<3,f^=f>>11,f+=f<<15,f;}float l(){return asfloat((i=l(i)&8388607)|1065353216)-1;}float l(float f,float t,float i){return i=saturate((i-f)/(t-f)),i*i*i*(i*(i*6-15)+10);}float l(float3 f,float3 i){float3 n=abs(f)-i;return max(max(n.x,n.y),n.z);}float c(float3 f){f=abs(f);if(f.x<max(f.y,f.z))f=f.yzx;if(f.x<max(f.y,f.z))f=f.yzx;float i=max(max(max(dot(f,normalize(float3(1,1,1))),dot(f.xz,normalize(float2(y+1,1)))),dot(f.yx,normalize(float2(1,y)))),dot(f.xz,normalize(float2(1,y)))),n=length(f);return n-1.6125+.25*l(0.,.343,sin(acos(i/n-.0075)));}float c(float3 f,int i){return min(c(f),-l(f,float3(10,10,10)));}float p(float3 f){return c(f,1);}float b(float3 f){return c(f,0);}float3 b(float3 f,float i){return float3(b(f+float3(i,0,0)),b(f+float3(0,i,0)),b(f+float3(0,0,i)))-float3(b(f-float3(i,0,0)),b(f-float3(0,i,0)),b(f-float3(0,0,i)));}float2 p(float3 f,float3 i){float t=.0001,n=30,s=b(f)<0?-1:1;float2 u={0,d};for(int R=0;R<80;++R){float z=s*b(i*t+f),a=abs(z),y=a/t;if(y<u.y)u=float2(t,y);if(y<m||t>n)break;t+=z;}return float2(u.x,s*max(u.x*u.y,.004));}void R(int f,int z){r[++i]=int4((80+f-1)/f,(45+f-1)/f,1,1)*z;}[numthreads(16,16,1)]void _0(uint3 m:SV_DispatchThreadID){float2 y,d;e.GetDimensions(y.x,y.y);a[0].GetDimensions(d.x,d.y);float2 s=(m.xy+.5)/y,x=(s*2-1)*float2(y.x/y.y,-1);float3 c=-float3(0,0,-1),D=float3(0,1,0),r=cross(D,c),o=float3(0,0,3),S=normalize(mul(transpose(float3x3(r,D,c)),float3(x/2,-.5/tan(1.57075*60/180.))));float4 T=1;if(f==0){R(1,n==0?1:0);R(1,n==1?1:0);R(1,n==2?1:0);R(1,n==3?1:0);R(1,n==4?1:0);R(4,1);R(1,1);R(1,1);R(8,1);R(8,1);R(32,1);R(32,1);R(1,1);return;}else if(f>0&&f<4){float k=160,v=k/3.5,L=2*v*v;float2 g=(f>1?float2(1,0):float2(0,1))/y;for(float h=-k;h<=k;++h)T+=a[0].SampleLevel(t,h*g+s,0)*(f>2?1.5*(k-abs(h))*(k-abs(h))/(k*k*k):exp(-h*h/L)/sqrt(L*z));}else if(f==4)i=m.y,T=a[0].SampleLevel(t,s,0)+a[1].SampleLevel(t,s,0)*.025+a[2].SampleLevel(t,s,0)*.025+a[3].SampleLevel(t,s,0)*.025+a[4].SampleLevel(t,s,0)*lerp(1,l(),.125)*.25,T=max(0,T*.5),T=max(0,T*(T*1.28713+.153229)/(T*(T+3.33333)+.4)),T=pow(T,1/2.2);else if(f==5)T=frac(u)*float4(1.,.111111,0.,0.)+.5;else if(f==6){o.z+=sin(u);float2 k=p(o,S);T.xyz=normalize(b(S*k.x+o,.1))*.5+.5;if(isnan(dot(T.xyz,T.xyz)))T.xyz=float3(1000,0,0);}else if(f==7);else if(f==8);else if(f==9);e[m.xy]=T;}
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