yum-archive/Tooner

A toon shader for Unity's BIRP.

git clone https://git.yummers.dev/yum-archive/Tooner

yumAdd some options to ds2_11 (terrain gimmick)358c53e

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1#include "globals.cginc"
2
3#ifndef __CNLOHR_INC
4#define __CNLOHR_INC
5
6/*
7 * MIT License
8 *
9 * NOTE: Much content here is originally from others.  Content in third party
10 * folder may not be fully MIT-licensable. 
11 *
12 * Copyright (c) 2021 cnlohr, et. al.
13 *
14 * All other content in this repository falls under the following terms:
15 *
16 * Permission is hereby granted, free of charge, to any person obtaining a copy
17 * of this software and associated documentation files (the "Software"), to
18 * deal
19 * in the Software without restriction, including without limitation the rights
20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
21 * copies of the Software, and to permit persons to whom the Software is
22 * furnished to do so, subject to the following conditions:
23 *
24 * The above copyright notice and this permission notice shall be included in
25 * all
26 * copies or substantial portions of the Software.
27 *
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
29 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
30 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
31 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
32 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
33 * FROM,
34 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
35 * THE
36 * SOFTWARE.
37 */
38
39// Source:
40// https://github.com/cnlohr/shadertrixx?tab=readme-ov-file#eye-center-position
41bool isMirror() { return _VRChatMirrorMode != 0; }
42
43// Source:
44// https://github.com/cnlohr/shadertrixx?tab=readme-ov-file#eye-center-position
45float3 getCenterCamPos() {
46#if defined(USING_STEREO_MATRICES) || defined(UNITY_SINGLE_PASS_STEREO)
47  return (unity_StereoWorldSpaceCameraPos[0] + unity_StereoWorldSpaceCameraPos[1]) / 2;
48#else
49  return isMirror() ? _VRChatMirrorCameraPos : _WorldSpaceCameraPos.xyz;
50#endif
51}
52
53float GetLinearZFromZDepth_WorksWithMirrors(float zDepthFromMap, float2 screenUV)
54{
55	#if defined(UNITY_REVERSED_Z)
56		zDepthFromMap = 1 - zDepthFromMap;
57
58		// When using a mirror, the far plane is whack.  This just checks for it and aborts.
59		if( zDepthFromMap >= 1.0 ) return _ProjectionParams.z;
60	#endif
61
62	float4 clipPos = float4(screenUV.xy, zDepthFromMap, 1.0);
63	clipPos.xyz = 2.0f * clipPos.xyz - 1.0f;
64	float4 camPos = mul(unity_CameraInvProjection, clipPos);
65	return -camPos.z / camPos.w;
66}
67
68float GetDepthOfWorldPos(float3 worldPos)
69{
70  float3 full_vec_eye_to_geometry = worldPos - _WorldSpaceCameraPos;
71  float4 objPos = mul(unity_WorldToObject, float4(worldPos, 1));
72  float4 clipPos = UnityObjectToClipPos(objPos);
73
74	float2 suv = clipPos * float2(0.5, 0.5 * _ProjectionParams.x);
75  float2 screenPos = TransformStereoScreenSpaceTex(suv + 0.5 * clipPos.w, clipPos.w);
76
77  float perspective_divide = rcp(clipPos.w);
78  float perspective_factor = length(full_vec_eye_to_geometry * perspective_divide);
79  float2 screen_uv = screenPos.xy * perspective_divide;
80  float eye_depth_world =
81    GetLinearZFromZDepth_WorksWithMirrors(
82        SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, screen_uv),
83        screen_uv) * perspective_factor;
84  return eye_depth_world;
85}
86
87float GetDepthOfWorldPos(
88    float3 full_vec_eye_to_geometry,
89    float3 worldPos)
90{
91  float4 objPos = mul(unity_WorldToObject, float4(worldPos, 1));
92  float4 clipPos = UnityObjectToClipPos(objPos);
93
94	float2 suv = clipPos * float2(0.5, 0.5 * _ProjectionParams.x);
95  bool suv_in_range =
96    (suv.x >= 0) * (suv.x <= 1) *
97    (suv.y >= 0) * (suv.y <= 1);
98  float2 screenPos = TransformStereoScreenSpaceTex(suv + 0.5 * clipPos.w, clipPos.w);
99
100  float perspective_divide = rcp(clipPos.w);
101  float perspective_factor = length(full_vec_eye_to_geometry * perspective_divide);
102  float2 screen_uv = screenPos.xy * perspective_divide;
103  float eye_depth_world =
104    GetLinearZFromZDepth_WorksWithMirrors(
105        SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, screen_uv),
106        screen_uv) * perspective_factor;
107  return suv_in_range ? eye_depth_world : -1E6;
108}
109
110#endif  // __CNLOHR_INC