अपनी आंखों के सामने एक गेम बनाना - भाग 4: पैलेट में फीका करने के लिए शेडर (एक ला एनईएस)

Shader "Custom/Palette Shader" { Properties { _MainTex ("Base (RGB)", 2D) = "white" {} } SubShader { Pass { ZTest Always Cull Off ZWrite Off Fog { Mode off } CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma fragmentoption ARB_precision_hint_fastest #include "UnityCG.cginc" #pragma target 3.0 struct v2f { float4 pos : POSITION; float2 uv : TEXCOORD0; }; uniform sampler2D _MainTex; v2f vert(appdata_img v) { v2f o; o.pos = mul(UNITY_MATRIX_MVP, v.vertex); o.uv = MultiplyUV(UNITY_MATRIX_TEXTURE0, v.texcoord); return o; } half4 frag(v2f i): COLOR { half4 color = tex2D(_MainTex, i.uv); //   ,   half4 rc = color; return rc; } ENDCG } } FallBack "Diffuse" } 

 using UnityEngine; [ExecuteInEditMode] [RequireComponent(typeof(Camera))] public class PaletteShader : MonoBehaviour { public Shader shader; private Material _material; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// protected Material material { get { if (_material == null) { _material = new Material(shader); _material.hideFlags = HideFlags.HideAndDontSave; } return _material; } } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// private void OnRenderImage(RenderTexture source, RenderTexture destination) { if (shader == null) return; Material mat = material; Graphics.Blit(source, destination, mat); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void OnDisable() { if (_material) DestroyImmediate(_material); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// } 

 Shader "Custom/Palette Shader" { Properties { _MainTex ("Base (RGB)", 2D) = "white" {} _Br("Brightness", Float) = 0 _PaletteTex ("Pelette texture", 3D) = "white" {} } SubShader { Pass { ZTest Always Cull Off ZWrite Off Fog { Mode off } CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma fragmentoption ARB_precision_hint_fastest #include "UnityCG.cginc" #pragma target 3.0 struct v2f { float4 pos : POSITION; float2 uv : TEXCOORD0; }; uniform sampler2D _MainTex; uniform sampler3D _PaletteTex; uniform float _Br; v2f vert(appdata_img v) { v2f o; o.pos = mul(UNITY_MATRIX_MVP, v.vertex); o.uv = MultiplyUV(UNITY_MATRIX_TEXTURE0, v.texcoord); return o; } half4 frag(v2f i): COLOR { half4 color = tex2D(_MainTex, i.uv); half4 rc = tex3D(_PaletteTex, color.rgb * _Br); float d = abs(Luminance(color) - Luminance(rc)); if ((d < 0.15) || (_Br == 1)) rc = color; return rc; } ENDCG } } FallBack "Diffuse" } 

 using UnityEngine; [ExecuteInEditMode] [RequireComponent(typeof(Camera))] public class PaletteShader : MonoBehaviour { public Shader shader; private Material _material; [Range(0, 1)] public float brightness = 0.0f; [Range(0, 1)] public float random = 1f; private float _r = 0f; private Texture3D _tex; //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// protected Material material { get { if (_material == null) { _material = new Material(shader); _material.hideFlags = HideFlags.HideAndDontSave; } return _material; } } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// private Texture3D GeneratePaletteTexture() { const int dim = 16; // -      const int depth = 3; // -      const float f_dim = 1.0f / (1.0f * dim - 1.0f); const float f_depth = 1.0f / (1.0f * depth - 1.0f); Texture3D tex = new Texture3D(dim, dim, dim, TextureFormat.RGB565, false); tex.filterMode = FilterMode.Point; tex.wrapMode = TextureWrapMode.Clamp; Color[] palette = new Color[depth*depth*depth]; float[] palette_grey = new float[depth*depth*depth]; //     for (int r = 0; r < depth; r++) { for (int g = 0; g < depth; g++) { for (int b = 0; b < depth; b++) { Color c = new Color(r * f_depth / 2, g * f_depth, b * f_depth, 1); int n = r*depth*depth + g*depth + b; palette[n] = c; palette_grey[n] = cr*0.21f + cg*0.72f + cb*0.07f; } } } Color[] t = new Color[dim*dim*dim]; //    for (int r = 0; r < dim; r++) { for (int g = 0; g < dim; g++) { for (int b = 0; b < dim; b++) { float grey = (r * 0.21f + g * 0.72f + b * 0.07f) * f_dim; //         int idx = 0; float min_d = grey; for (int i = 1; i < palette_grey.Length; i++) { float d = Mathf.Abs(palette_grey[i] - grey); if (d < min_d) { min_d = d; idx = i; } } t[r * dim * dim + g * dim + b] = palette[idx]; //    } } } tex.SetPixels(t); tex.Apply(); return tex; } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// private void OnRenderImage(RenderTexture source, RenderTexture destination) { if (shader == null) return; Material mat = material; mat.SetFloat("_Br", brightness); if (_tex == null) _tex = GeneratePaletteTexture(); if (random != _r) { _r = random; _tex = GeneratePaletteTexture(); } mat.SetTexture("_PaletteTex", _tex); Graphics.Blit(source, destination, mat); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void OnDisable() { if (_material) DestroyImmediate(_material); } //////////////////////////////////////////////////////////////////////////////////////////////////////////////////// }