Shader教程：ShaderToy通用模板
发表于2018-04-02
ShaderToy是可以通过WebGL创建分享shader程序的工具，而本篇文章要和大家分享的是ShaderToy通用模板，并将核心代码分享给大家，其中代码部分有参考别人的部分。
代码如下：
Shader "Shadertoy/Template" ｛
Properties｛
iMouse ("Mouse Pos", Vector) = (100, 100, 0, 0)
iChannel0("iChannel0", 2D) = "white" ｛｝
iChannelResolution0 ("iChannelResolution0", Vector) = (100, 100, 0, 0)
｝
CGINCLUDE
#include "UnityCG.cginc"
#pragma target 3.0
#define vec2 float2
#define vec3 float3
#define vec4 float4
#define mat2 float2x2
#define mat3 float3x3
#define mat4 float4x4
#define iGlobalTime _Time.y
#define mod fmod
#define mix lerp
#define fract frac
#define texture2D tex2D
#define iResolution _ScreenParams
#define gl_FragCoord ((_iParam.scrPos.xy/_iParam.scrPos.w) * _ScreenParams.xy)
#define PI2 6.28318530718
#define pi 3.14159265358979
#define halfpi (pi * 0.5)
#define oneoverpi (1.0 / pi)
fixed4 iMouse;
sampler2D iChannel0;
fixed4 iChannelResolution0;
struct v2f ｛
float4 pos : SV_POSITION;
float4 scrPos : TEXCOORD0;
｝;
v2f vert(appdata_base v) ｛
v2f o;
o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
o.scrPos = ComputeScreenPos(o.pos);
return o;
｝
vec4 main(vec2 fragCoord);
fixed4 frag(v2f _iParam) : COLOR0 ｛
vec2 fragCoord = gl_FragCoord;
return main(gl_FragCoord);
｝
vec4 main(vec2 fragCoord) ｛
return vec4(1, 1, 1, 1);
｝
ENDCG
SubShader ｛
Pass ｛
CGPROGRAM
#pragma vertex vert
#pragma fragment frag
#pragma fragmentoption ARB_precision_hint_fastest
ENDCG
｝
｝
FallBack Off
｝
链接参考：https://blog.csdn.net/candycat1992/article/details/44039077