ShaderToy对照UnityShader

• • 对照调整部分:
  • 一个完整例子:
  • 效果展示:
  • 其他例子:

对照调整部分:

语法相同不再列举,
只列举需要改变语法的部分...

ShaderToy	UnityShaderLab
fragCoord	position[SV_POSITION]
iResolution	_ScreenParams
vec3	float3
vec2	float2
mod	fmod
mix	lerp
texture	tex2D
iTime	_Time

…未完待续…

一个完整例子:

ShaderToy(默认新建):

    void mainImage( out vec4 fragColor, in vec2 fragCoord )
    {
        // Normalized pixel coordinates (from 0 to 1)
        vec2 uv = fragCoord/iResolution.xy;

        // Time varying pixel color
        vec3 col = 0.5 + 0.5*cos(iTime+uv.xyx+vec3(0,2,4));

        // Output to screen
        fragColor = vec4(col,1.0);
    }

UnityShader(对照调整后):

Shader "Custom/Colorful"
{	
	// 属性块 speed调整颜色变换速度
	Properties{
		_Speed("Float",Float) = 30
	}
    SubShader
    {
        Pass
        {
            CGPROGRAM

            #pragma vertex vert
            #pragma fragment frag

			// 只有在CGPROGRAM内再次定义一个与属性块内名字与类型相同的变量,属性块对应的变量才能生效
			Float _Speed;

			struct v2f{
                float4 position : SV_POSITION;
            };

			v2f vert(float4 v:POSITION) : SV_POSITION {
                v2f o;
                o.position = UnityObjectToClipPos(v);
                return o;
            }

			fixed4 frag(v2f i) : SV_Target {
            
				// Normalized pixel coordinates (from 0 to 1)
                float2 uv = i.position.xy/ _ScreenParams.xy;

				// Time varying pixel color
				float3 col = 0.5 +0.5*cos(uv.xyx+float3(_Time.x*_Speed+0,_Time.x*30+2,_Time.x*_Speed+4));

                // Output to screen
				fixed4 fragColor = fixed4(col,1.0);

                return fragColor;
            }
            ENDCG
        }
    }
}

效果展示:

其他例子:

https://github.com/zld126126/MyUnity/tree/main/MyShaderToy/Assets/MyShaderToyExamples