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comparison Orchestland/Assets/LeapMotion/Resources/LeapCG.cginc @ 1:f7675884f2a1

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Add Orchestland project
author Daiki OYAKAWA <e135764@ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2015 23:09:20 +0900
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0:347d21cdfc22 1:f7675884f2a1
1 #include "UnityCG.cginc"
2
3 /////////////// Constants for Dragonfly Color Correction ///////////////
4 #define CAMERA_WIDTH 608.0
5 #define CAMERA_HEIGHT 540.0
6 #define CAMERA_DELTA float2(1.0 / CAMERA_WIDTH, 1.0 / CAMERA_HEIGHT)
7
8 #define RGB_SCALE 1.5 * float3(1.5, 1.0, 0.5)
9
10 #define R_OFFSET CAMERA_DELTA * float2(-0.5, 0.0)
11 #define G_OFFSET CAMERA_DELTA * float2(-0.5, 0.5)
12 #define B_OFFSET CAMERA_DELTA * float2( 0.0, 0.5)
13
14 #define TRANSFORMATION transpose(float4x4(5.0670, -1.2312, 0.8625, -0.0507, -1.5210, 3.1104, -2.0194, 0.0017, -0.8310, -0.3000, 13.1744, -0.1052, -2.4540, -1.3848, -10.9618, 1.0000))
15 #define CONSERVATIVE transpose(float4x4(5.0670, 0.0000, 0.8625, 0.0000, 0.0000, 3.1104, 0.0000, 0.0017, 0.0000, 0.0000, 13.1744, 0.0000, 0.0000, 0.0000, 0.0000, 1.0000))
16
17 #define FUDGE_THRESHOLD 0.5
18 #define FUDGE_CONSTANT (1 / (1 - FUDGE_THRESHOLD))
19 ////////////////////////////////////////////////////////////////////////
20
21 sampler2D _LeapTexture;
22 sampler2D _LeapDistortion;
23
24 float4 _LeapProjection;
25 float _LeapGammaCorrectionExponent;
26
27 float2 LeapGetUndistortedUV(float4 screenPos){
28 float2 uv = (screenPos.xy / screenPos.w) * 2 - float2(1,1);
29 float2 tangent = (uv + _LeapProjection.xy) / _LeapProjection.zw;
30 float2 distortionUV = 0.125 * tangent + float2(0.5, 0.5);
31
32 float4 distortionAmount = tex2D(_LeapDistortion, distortionUV);
33 return float2(DecodeFloatRG(distortionAmount.xy), DecodeFloatRG(distortionAmount.zw)) * 2.3 - float2(0.6, 0.6);
34 }
35
36 float LeapRawBrightnessUV(float2 uv){
37 #if LEAP_FORMAT_IR
38 return tex2D(_LeapTexture, uv).a;
39 #else
40 return pow(dot(tex2D(_LeapTexture, uv), float4(1, -0.105, -0.05, -0.001)), 0.5);
41 #endif
42 }
43
44 float3 LeapRawColorUV(float2 uv){
45 #if LEAP_FORMAT_IR
46 float brightness = LeapRawBrightnessUV(uv);
47 return float3(brightness, brightness, brightness);
48 #else
49 float4 input_lf;
50
51 input_lf.a = tex2D(_LeapTexture, uv).a;
52 input_lf.r = tex2D(_LeapTexture, uv + R_OFFSET).b;
53 input_lf.g = tex2D(_LeapTexture, uv + G_OFFSET).r;
54 input_lf.b = tex2D(_LeapTexture, uv + B_OFFSET).g;
55
56 float4 output_lf = mul(TRANSFORMATION, input_lf);
57 float4 output_lf_fudge = mul(CONSERVATIVE, input_lf);
58
59 float3 fudgeMult = input_lf.rgb * FUDGE_CONSTANT - FUDGE_CONSTANT * FUDGE_THRESHOLD;
60 float3 fudge = step(FUDGE_THRESHOLD, input_lf.rgb) * fudgeMult;
61
62 float3 color = (output_lf_fudge.rgb - output_lf.rgb) * fudge * fudge + output_lf.rgb;
63
64 return saturate(color * RGB_SCALE);
65 #endif
66 }
67
68 float4 LeapRawColorBrightnessUV(float2 uv){
69 #if LEAP_FORMAT_IR
70 float brightness = LeapRawBrightnessUV(uv);
71 return float4(brightness, brightness, brightness, brightness);
72 #else
73 float4 input_lf;
74
75 input_lf.a = tex2D(_LeapTexture, uv).a;
76 input_lf.r = tex2D(_LeapTexture, uv + R_OFFSET).b;
77 input_lf.g = tex2D(_LeapTexture, uv + G_OFFSET).r;
78 input_lf.b = tex2D(_LeapTexture, uv + B_OFFSET).g;
79
80 float4 output_lf = mul(TRANSFORMATION, input_lf);
81 float4 output_lf_fudge = mul(CONSERVATIVE, input_lf);
82
83 float3 fudgeMult = input_lf.rgb * FUDGE_CONSTANT - FUDGE_CONSTANT * FUDGE_THRESHOLD;
84 float3 fudge = step(FUDGE_THRESHOLD, input_lf.rgb) * fudgeMult;
85
86 float3 color = (output_lf_fudge.rgb - output_lf.rgb) * fudge * fudge + output_lf.rgb;
87
88 return saturate(float4(color * RGB_SCALE, pow(dot(input_lf, float4(-0.051, -0.001, -0.105, 1)), 0.5)));
89 #endif
90 }
91
92 float LeapRawBrightness(float4 screenPos){
93 return LeapRawBrightnessUV(LeapGetUndistortedUV(screenPos));
94 }
95
96 float3 LeapRawColor(float4 screenPos){
97 return LeapRawColorUV(LeapGetUndistortedUV(screenPos));
98 }
99
100 float4 LeapRawColorBrightness(float4 screenPos){
101 return LeapRawColorBrightnessUV(LeapGetUndistortedUV(screenPos));
102 }
103
104 float LeapBrightnessUV(float2 uv){
105 return pow(LeapRawBrightnessUV(uv), _LeapGammaCorrectionExponent);
106 }
107
108 float3 LeapColorUV(float2 uv){
109 return pow(LeapRawColorUV(uv), _LeapGammaCorrectionExponent);
110 }
111
112 float4 LeapColorBrightnessUV(float2 uv){
113 return pow(LeapRawColorBrightnessUV(uv), _LeapGammaCorrectionExponent);
114 }
115
116 float LeapBrightness(float4 screenPos){
117 return pow(LeapRawBrightness(screenPos), _LeapGammaCorrectionExponent);
118 }
119
120 float3 LeapColor(float4 screenPos){
121 return pow(LeapRawColor(screenPos), _LeapGammaCorrectionExponent);
122 }
123
124 float4 LeapColorBrightness(float4 screenPos){
125 return pow(LeapRawColorBrightness(screenPos), _LeapGammaCorrectionExponent);
126 }