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44 lines
1.0 KiB
Plaintext
44 lines
1.0 KiB
Plaintext
2 weeks ago
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/******************************************************************************/
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/*
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Project - MudBun
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Publisher - Long Bunny Labs
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http://LongBunnyLabs.com
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Author - Ming-Lun "Allen" Chou
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http://AllenChou.net
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*/
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/******************************************************************************/
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#ifndef MUDBUN_CUSTOM_RAY_TRACED_VOXELS
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#define MUDBUN_CUSTOM_RAY_TRACED_VOXELS
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#include "../Shader/Math/Geometry.cginc"
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// return true if the ray should hit the voxel
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bool ray_traced_voxels_hit_func
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(
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float3 ro, // ray origin
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float3 rd, // ray direction (normalized)
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float3 c, // center of voxel
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float h, // half size of voxel
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out float3 hitPos, // position of ray hit
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out float3 hitNorm // normal at hit position
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)
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{
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hitPos = 0.0f;
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hitNorm = 0.0f;
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// example: box
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float t = ray_box_intersect(ro, rd, c, h).x;
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if (t >= -1e-3f)
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{
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hitPos = ro + t * rd;
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hitNorm = box_gradient(hitPos, c, h);
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return true;
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}
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return false;
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}
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#endif
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