yum-archive/2ner

A toon shader for Unity's BIRP.

git clone https://git.yummers.dev/yum-archive/2ner

yumMore ssao and c30 cleanups50b0b6c

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1#ifndef __CNLOHR_INC
2#define __CNLOHR_INC
3
4#include "globals.cginc"
5#include "interpolators.cginc"
6
7/*
8 * MIT License
9 *
10 * NOTE: Much content here is originally from others.  Content in third party
11 * folder may not be fully MIT-licensable. 
12 *
13 * Copyright (c) 2021 cnlohr, et. al.
14 *
15 * All other content in this repository falls under the following terms:
16 *
17 * Permission is hereby granted, free of charge, to any person obtaining a copy
18 * of this software and associated documentation files (the "Software"), to
19 * deal
20 * in the Software without restriction, including without limitation the rights
21 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
22 * copies of the Software, and to permit persons to whom the Software is
23 * furnished to do so, subject to the following conditions:
24 *
25 * The above copyright notice and this permission notice shall be included in
26 * all
27 * copies or substantial portions of the Software.
28 *
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
30 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
32 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
33 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
34 * FROM,
35 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
36 * THE
37 * SOFTWARE.
38 */
39
40// Source:
41// https://github.com/cnlohr/shadertrixx?tab=readme-ov-file#eye-center-position
42bool isMirror() { return _VRChatMirrorMode != 0; }
43
44// Source:
45// https://github.com/cnlohr/shadertrixx?tab=readme-ov-file#eye-center-position
46float3 getCenterCamPos() {
47#if defined(USING_STEREO_MATRICES) || defined(UNITY_SINGLE_PASS_STEREO)
48  return (unity_StereoWorldSpaceCameraPos[0] + unity_StereoWorldSpaceCameraPos[1]) * 0.5;
49#else
50  return isMirror() ? _VRChatMirrorCameraPos : _WorldSpaceCameraPos.xyz;
51#endif
52}
53
54bool isVR() {
55#if defined(USING_STEREO_MATRICES)
56  return true;
57#else
58  return false;
59#endif
60}
61
62float GetLinearZFromZDepth_WorksWithMirrors(float zDepthFromMap, float2 screenUV)
63{
64	#if defined(UNITY_REVERSED_Z)
65		zDepthFromMap = 1 - zDepthFromMap;
66
67		// When using a mirror, the far plane is whack.  This just checks for it and aborts.
68		if( zDepthFromMap >= 1.0 ) return _ProjectionParams.z;
69	#endif
70
71	float4 clipPos = float4(screenUV.xy, zDepthFromMap, 1.0);
72	clipPos.xyz = 2.0f * clipPos.xyz - 1.0f;
73	float4 camPos = mul(unity_CameraInvProjection, clipPos);
74	return -camPos.z / camPos.w;
75}
76
77void GetScreenUVAndPerspectiveFactor(float3 worldPos, float4 clipPos, out float2 screen_uv, out float perspective_factor) {
78    float3 full_vec_eye_to_geometry = worldPos - _WorldSpaceCameraPos;
79    float perspective_divide = 1.0f / clipPos.w;
80    perspective_factor = length(full_vec_eye_to_geometry * perspective_divide);
81    screen_uv = ComputeScreenPos(clipPos).xy;
82}
83
84#if defined(_SSAO)
85float GetDepthOfWorldPos(float3 worldPos, out float2 debug)
86{
87  float3 objPos = mul(unity_WorldToObject, float4(worldPos, 1));
88  float4 clipPos = UnityObjectToClipPos(objPos);
89  float4 screenPos = ComputeScreenPos(clipPos);
90  const float2 screen_uv = screenPos.xy / screenPos.w;
91
92  float zDepthFromMap = SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, screen_uv);
93  float linearZ =
94    GetLinearZFromZDepth_WorksWithMirrors(zDepthFromMap, screen_uv);
95  linearZ = min(1E3, linearZ);
96
97	debug = screen_uv;
98  return linearZ;
99}
100#endif
101
102#endif  // __CNLOHR_INC