HoloLens x Graphics

HoloLens Graphics Tokyo HoloLens Meetup vol.2 - 2017/03/15hecomi

HoloLens https://github.com/hecomi/HoloLensPlayground

hecomi

@hecomihttp://tips.hecomi.com

HoloLens

HoloLens VR

Unlit/Color (0, 0, 0, 1) Holograms 101HoloLens

// a = ( (1 - a)) + a( +

https://developer.microsoft.com/ja-jp/windows/holographic/case_study_-_looking_through_holes_in_your_reality

Shader "HoloLens/Occlusion"{SubShader{Pass{ ColorMask 0 ZWrite On

CGPROGRAM #pragma vertex vert #pragma fragment frag ENDCG}}}

ColorMask 0

HoloToolkit-Unity Occlusion =

http://tips.hecomi.com/entry/2017/02/18/190949

OROR

Stencil { Ref [_Mask] Comp Equal}Stencil { Ref [_Mask] Comp NotEqual}Stencil { Ref [_Mask] Comp Always Pass Replace}

OK

HoloToolkit-Unity

HoloLens 5.0

struct v2f{ float3 worldPos : TEXCOORD0; ...};

v2f vert(appdata_base v){ ... o.worldPos = mul(unity_ObjectToWorld, v.vertex); ...}inline float toIntensity(float3 pos){ return frac(length(pos) - _Time.y);}

fixed4 frag(v2f i) : SV_Target{ float3 worldIndex = floor(i.worldPos.xyz * _TilesPerMeter); float3 boxelCenter = worldIndex / _TilesPerMeter; float intensity = toIntensity(boxelCenter); return _Color * intensity;}

Physics.Raycastr = speed * timecenter

https://developer.microsoft.com/en-us/windows/holographic/Hologram_stability.html HoloLens 0.85 m

https://developer.microsoft.com/en-us/windows/holographic/Hologram_stability.html

HoloLens 0.85 m

Fragments

float4 worldPos = mul(unity_ObjectToWorld, v.vertex);float3 dist = length(_WorldSpaceCameraPos - worldPos);fixed darkness = clamp((_Start - dist) / (_Start - _End), 0.0, 1.0);o.color *= darkness;

[maxvertexcount(3)]void geom(triangle appdata_t input[3], inout TriangleStream stream){ for (int i = 0; i < 3; ++i) { ... float4 worldPos = mul(unity_ObjectToWorld, v.vertex); float3 dist = length(_WorldSpaceCameraPos - worldPos); fixed destruction = clamp((_Start - dist) / (_Start - _End), 0.0, 1.0); ... v.vertex.xyz = (v.vertex.xyz - center) * (1.0 - destruction * _Scale) + center; v.vertex.xyz = rotate(v.vertex.xyz - center, random * destruction * _Rotation) + center; v.vertex.xyz += v.normal.xyz * destruction * _Position * random; o.vertex = UnityObjectToClipPos(v.vertex); ... stream.Append(o); } stream.RestartStrip();}

HoloLens https://github.com/hecomi/HoloLensPlayground