117 lines
3.6 KiB
Plaintext
117 lines
3.6 KiB
Plaintext
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/*===============================================================================
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Copyright 2017-2018 PTC Inc.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not
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use this file except in compliance with the License. You may obtain a copy of
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the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed
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under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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===============================================================================*/
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Shader "Custom/VideoBackground" {
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// Used to render the Vuforia Video Background
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Properties
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{
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[NoScaleOffset] _MainTex("Texture", 2D) = "white" {}
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[NoScaleOffset] _UVTex("UV Texture", 2D) = "white" {}
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}
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SubShader
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{
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Tags {"Queue" = "geometry-11" "RenderType" = "opaque" }
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Pass {
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ZWrite Off
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Cull Off
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Lighting Off
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CGPROGRAM
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#pragma multi_compile VUFORIA_RGB VUFORIA_YUVNV12 VUFORIA_YUVNV21
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#pragma vertex vert
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#pragma fragment frag
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#include "UnityCG.cginc"
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sampler2D _MainTex;
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float4 _MainTex_ST;
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#if (VUFORIA_YUVNV12 || VUFORIA_YUVNV21)
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sampler2D _UVTex;
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float4 _UVTex_ST;
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#endif
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struct v2f {
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float4 pos : SV_POSITION;
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float2 uv : TEXCOORD0;
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#if (VUFORIA_YUVNV12 || VUFORIA_YUVNV21)
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float2 uv2 : TEXCOORD1;
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#endif
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};
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v2f vert(appdata_base v)
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{
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v2f o;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
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#if (VUFORIA_YUVNV12 || VUFORIA_YUVNV21)
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o.uv2 = TRANSFORM_TEX(v.texcoord, _UVTex);
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#endif
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return o;
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}
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#if (VUFORIA_YUVNV12 || VUFORIA_YUVNV21)
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half4 frag(v2f i) : COLOR
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{
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half4 c;
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half2 uv = tex2D(_UVTex, i.uv2).rg;
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float y = tex2D(_MainTex, i.uv).r;
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#if VUFORIA_YUVNV12
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half4 v4yuv1 = half4(y, uv, 1.0);
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c.r = dot(half4(1.1640625, 0.000000000, 1.5957031250, -0.87060546875), v4yuv1);
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c.g = dot(half4(1.1640625, -0.390625000, -0.8134765625, 0.52929687500), v4yuv1);
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c.b = dot(half4(1.1640625, 2.017578125, 0.0000000000, -1.08154296875), v4yuv1);
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c.a = 1.0;
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#else
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half4 v4yuv1 = half4(y, uv, 1.0);
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c.r = dot(half4(1.1640625, 1.5957031250, 0.000000000, -0.87060546875), v4yuv1);
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c.g = dot(half4(1.1640625, -0.8134765625, -0.390625000, 0.52929687500), v4yuv1);
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c.b = dot(half4(1.1640625, 0.0000000000, 2.017578125, -1.08154296875), v4yuv1);
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c.a = 1.0;
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#endif
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#ifdef UNITY_COLORSPACE_GAMMA
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return c;
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#else
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return fixed4(GammaToLinearSpace(c.rgb), c.a);
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#endif
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}
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#else
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half4 frag(v2f i) : COLOR
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{
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half4 c = tex2D(_MainTex, i.uv);
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c.rgb = c.rgb;
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c.a = 1.0;
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#ifdef UNITY_COLORSPACE_GAMMA
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return c;
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#else
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return fixed4(GammaToLinearSpace(c.rgb), c.a);
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#endif
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}
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#endif
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ENDCG
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}
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}
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Fallback "Legacy Shaders/Diffuse"
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}
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