wehub-resource-sync
99 lines
2.9 KiB
HLSL
99 lines
2.9 KiB
HLSL
#include "shared/hash-functions.hlsl"
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#include "shared/noise-functions.hlsl"
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#include "shared/point.hlsl"
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#include "shared/quat-functions.hlsl"
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#include "shared/pbr.hlsl"
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cbuffer Params : register(b0)
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{
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float UseWAsWidth;
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float UseStretch;
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float Width;
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}
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StructuredBuffer<LegacyPoint> RailPoints : t0;
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StructuredBuffer<LegacyPoint> ShapePoints : t1;
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RWStructuredBuffer<PbrVertex> Vertices : u0;
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RWStructuredBuffer<int3> TriangleIndices : u1;
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[numthreads(64,1,1)]
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void main(uint3 i : SV_DispatchThreadID)
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{
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uint triangleCount, stride;
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TriangleIndices.GetDimensions(triangleCount, stride);
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uint vertexCount;
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Vertices.GetDimensions(vertexCount, stride);
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if(i.x >= vertexCount) {
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return;
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}
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uint rows;
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ShapePoints.GetDimensions(rows, stride);
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uint columns;
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RailPoints.GetDimensions(columns, stride);
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uint vertexIndex = i.x;
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uint rowIndex = vertexIndex % rows;
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uint columnIndex = vertexIndex / rows;
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PbrVertex v;
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LegacyPoint railPoint = RailPoints[columnIndex];
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LegacyPoint shapePoint = ShapePoints[rowIndex];
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float3 scaleFactor = (UseStretch ? railPoint.Stretch : 1)
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* (UseWAsWidth ? railPoint.W : 1) * Width;;
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float4 rotation = normalize(qMul( railPoint.Rotation ,shapePoint.Rotation ));
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float3 position = qRotateVec3(shapePoint.Position * scaleFactor, railPoint.Rotation) + railPoint.Position;
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//float3 normal =
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v.Position = position;
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v.Normal = qRotateVec3(float3(0,0,1), rotation);
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v.Tangent = qRotateVec3(float3(0,1,0), rotation);
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v.Bitangent = qRotateVec3(float3(1,0,0), rotation);
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v.TexCoord = float2((float)columnIndex/(columns-1),(float)rowIndex/(rows-1));
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v.Selected = 1;
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v.__padding =0;
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Vertices[vertexIndex] = v;
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if(isnan(railPoint.W ) || isnan(shapePoint.W) )
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Vertices[vertexIndex].Position = float3(0,0,0);
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// Write face indices
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if (columnIndex < columns - 1 && rowIndex < rows - 1)
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{
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int faceIndex = 2 * (rowIndex + columnIndex * (rows-1));
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if(
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isnan(railPoint.W)
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|| isnan(RailPoints[columnIndex+1].W)
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|| isnan(shapePoint.W)
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|| isnan(ShapePoints[rowIndex+1].W)
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)
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{
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if (columnIndex < columns - 1 && rowIndex < rows - 1)
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{
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TriangleIndices[faceIndex + 0] = int4(0, 0, 0, 0);
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TriangleIndices[faceIndex + 1] = int4(0, 0, 0, 0);
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//TriangleIndices[faceIndex + 1] = int4(0, 0, 0, 0); //commented duplicate line
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}
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if(isnan(railPoint.W ) || isnan(shapePoint.W) )
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Vertices[vertexIndex].Position = float3(0,0,0);
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return;
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}
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TriangleIndices[faceIndex + 0] = int4(vertexIndex + 1, vertexIndex + rows, vertexIndex, 0);
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TriangleIndices[faceIndex + 1] = int4(vertexIndex + 1, vertexIndex + rows + 1, vertexIndex + rows, 0);
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}
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}
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