wehub-resource-sync
105 lines
2.7 KiB
HLSL
105 lines
2.7 KiB
HLSL
#include "shared/point.hlsl"
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#include "shared/quat-functions.hlsl"
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static const float4 Factors[] =
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{
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// x y z w
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float4(0, 0, 0, 0), // 0 nothing
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float4(1, 0, 0, 0), // 1 for x
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float4(0, 1, 0, 0), // 2 for y
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float4(0, 0, 1, 0), // 3 for z
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float4(0, 0, 0, 1), // 4 for w
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float4(0, 0, 0, 0), // avoid rotation effects
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};
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cbuffer Transforms : register(b0)
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{
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float4x4 CameraToClipSpace;
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float4x4 ClipSpaceToCamera;
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float4x4 WorldToCamera;
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float4x4 CameraToWorld;
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float4x4 WorldToClipSpace;
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float4x4 ClipSpaceToWorld;
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float4x4 ObjectToWorld;
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float4x4 WorldToObject;
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float4x4 ObjectToCamera;
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float4x4 ObjectToClipSpace;
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};
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cbuffer Params : register(b1)
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{
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float DisplaceAmount;
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float DisplaceOffset;
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float Twist;
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float SampleRadius;
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float3 Center;
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}
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//StructuredBuffer<LegacyPoint> Points : t0;
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RWStructuredBuffer<LegacyPoint> Points : u0; // output
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Texture2D<float4> DisplaceMap : register(t1);
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sampler texSampler : register(s0);
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[numthreads(256,4,1)]
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void main(uint3 i : SV_DispatchThreadID)
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{
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uint index = i.x;
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LegacyPoint P = Points[index];
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float3 pos = P.Position;
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pos -= Center;
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float3 posInObject = mul(float4(pos.xyz,0), WorldToObject).xyz;
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//float3 posInObject = pos.xyz;
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float2 uv = posInObject.xy * float2(1,-1) + float2(0.5, 0.5);
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float4 c = DisplaceMap.SampleLevel(texSampler, uv , 0.0);
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float gray = (c.r + c.g + c.b)/3;
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float displaceMapWidth, displaceMapHeight;
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DisplaceMap.GetDimensions(displaceMapWidth, displaceMapHeight);
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int dSamples=2;
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float radius2 = 2;
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float sx = SampleRadius / displaceMapWidth;
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float sy = SampleRadius / displaceMapHeight;
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// Points[index].position += float3(0, 0, 0.01 * gray);
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// return;
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float padding = 1;
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float2 d = 0;
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float4 cx1= DisplaceMap.SampleLevel(texSampler, float2(uv.x + sx, uv.y), 0) * padding;
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float x1= (cx1.r + cx1.g + cx1.b) / 3;
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float4 cx2= DisplaceMap.SampleLevel(texSampler, float2(uv.x - sx, uv.y), 0) * padding;
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float x2= (cx2.r + cx2.g + cx2.b) / 3;
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float4 cy1= DisplaceMap.SampleLevel(texSampler, float2(uv.x, uv.y + sy), 0)*padding;
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float y1= (cy1.r + cy1.g + cy1.b) / 3;
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float4 cy2= DisplaceMap.SampleLevel(texSampler, float2(uv.x, uv.y - sy), 0)*padding;
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float y2= (cy2.r + cy2.g + cy2.b) / 3;
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d += float2( (x1-x2) , (y1-y2));
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d.y *= -1;
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float a = (d.x == 0 && d.y==0) ? 0 : atan2(d.x, d.y) + Twist / 180 * 3.14158;
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float2 direction = float2( sin(a), cos(a));
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float len = length(d);
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if(len > 0.0001)
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Points[index].Position += float3(direction * DisplaceAmount/100,0);
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} |