yum-archive/SoggyShaders

Old Unity shaders.

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

yumAdd grass shader03368f2

master
branchesmasterall refs →
2.4 KiB93 linesraw
1#ifndef __PBR_INC
2#define __PBR_INC
3
4#include "UnityPBSLighting.cginc"
5
6UNITY_DECLARE_TEXCUBE(_Cubemap);
7
8struct v2f
9{
10  float4 clipPos : SV_POSITION;
11  float2 uv : TEXCOORD0;
12  float3 normal : TEXCOORD1;
13  float3 worldPos : TEXCOORD2;
14
15  float3 objPos : TEXCOORD3;
16
17  #if defined(VERTEXLIGHT_ON)
18  float3 vertexLightColor : TEXCOORD3;
19  #endif
20};
21
22UnityLight GetLight(v2f i, float3 worldPos, float3 normal)
23{
24  UNITY_LIGHT_ATTENUATION(attenuation, 0, worldPos);
25  float3 light_color = _LightColor0.rgb * attenuation;
26
27  UnityLight light;
28  light.color = light_color;
29  #if defined(POINT) || defined(POINT_COOKIE) || defined(SPOT)
30  light.dir = normalize(_WorldSpaceLightPos0.xyz - worldPos);
31  #else
32  light.dir = _WorldSpaceLightPos0.xyz;
33  #endif
34  light.ndotl = DotClamped(normal, light.dir);
35
36  return light;
37}
38
39UnityIndirect GetIndirect(v2f i, float3 view_dir, float3 normal,
40    float smoothness, bool custom_cubemap) {
41  UnityIndirect indirect;
42  indirect.diffuse = 0;
43  indirect.specular = 0;
44
45  #if defined(VERTEXLIGHT_ON)
46  indirect.diffuse = i.vertexLightColor;
47  #endif
48
49  #if defined(FORWARD_BASE_PASS)
50  indirect.diffuse += max(0, ShadeSH9(float4(normal, 1)));
51  float3 reflect_dir = reflect(-view_dir, normal);
52  // There's a nonlinear relationship between mipmap level and roughness.
53  float roughness = 1 - smoothness;
54  roughness *= 1.7 - .7 * roughness;
55  if (custom_cubemap) {
56    float3 env_sample = UNITY_SAMPLE_TEXCUBE_LOD(
57        _Cubemap,
58        reflect_dir,
59        roughness * UNITY_SPECCUBE_LOD_STEPS);
60    indirect.specular = env_sample;
61  } else {
62    float3 env_sample = UNITY_SAMPLE_TEXCUBE_LOD(
63        unity_SpecCube0,
64        reflect_dir,
65        roughness * UNITY_SPECCUBE_LOD_STEPS);
66    indirect.specular = env_sample;
67  }
68  #endif
69
70  return indirect;
71}
72
73float4 getLitColor(v2f i, float4 albedo, float3 worldPos, float3 normal,
74    float metallic, float smoothness,
75    bool custom_cubemap)
76{
77  float3 specular_tint;
78  float one_minus_reflectivity;
79  albedo.rgb = DiffuseAndSpecularFromMetallic(
80    albedo, metallic, specular_tint, one_minus_reflectivity);
81
82  float3 view_dir = normalize(_WorldSpaceCameraPos - i.worldPos);
83
84  float3 pbr = UNITY_BRDF_PBS(albedo, specular_tint,
85      one_minus_reflectivity, smoothness,
86      view_dir, normal,
87      GetLight(i, worldPos, normal),
88      GetIndirect(i, view_dir, normal, smoothness, custom_cubemap)).rgb;
89
90  return float4(saturate(pbr), albedo.a);
91}
92
93#endif  // __PBR_INC