本文实例为大家分享了opengl shader实例,等待标识,不过效率估计不是很高。结果如下:
代码:
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shader "stalendp/waiticons" { cginclude #include "unitycg.cginc" #pragma target 3.0 struct v2f { float4 pos:sv_position; float2 uv : texcoord0; }; v2f vert(appdata_base v) { v2f o; o.pos = mul (unity_matrix_mvp, v.vertex); o.uv = v.texcoord.xy; return o; } fixed calcdot(fixed a, fixed ca, fixed2 uv) { a /= 57.295779513 ; ca /= 57.295779513 ; fixed tt = 180 / 57.295779513 ; uv = (fixed2(cos(a), sin(a)) * 0.2 + uv)* 10 ; fixed adit = tt* 2 *step(tt, a-ca); fixed r = 1 -step(ca + adit, a); r *= lerp( 0.2 , - 1 , saturate((ca-a+adit)/ 25 ))* 2 ; return smoothstep(r- 0.2 , r, length(uv.xy)); } fixed4 frag(v2f input) : color0 { float2 uv = input.uv.xy - float2( 0.5 ); float rx = fmod(uv.x, 0.4 ); float ry = fmod(uv.y, 0.4 ); float mx = step( 0.4 , abs(uv.x)); float my = step( 0.4 , abs(uv.y)); float alpha = 1 - mx*my*step( 0.1 , length(half2(rx,ry))); alpha*= 0.9 ; fixed4 forecolor = fixed4( 1 ); fixed4 bgcolor = fixed4(fixed3( 0.4 ),alpha); fixed4 result = bgcolor; fixed ca = fmod(_time.y, 2 )* 180 ; bgcolor = lerp(forecolor, bgcolor, calcdot( 0 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 30 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 60 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 90 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 120 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 150 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 180 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 210 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 240 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 270 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 300 , ca, uv)); bgcolor = lerp(forecolor, bgcolor, calcdot( 330 , ca, uv)); return bgcolor; } endcg subshader { lod 200 tags { "queue" = "transparent" } zwrite off blend srcalpha oneminussrcalpha pass { cgprogram #pragma vertex vert #pragma fragment frag #pragma fragmentoption arb_precision_hint_fastest endcg } } fallback off } |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://blog.csdn.net/stalendp/article/details/22687059