148 lines
4.9 KiB
HLSL
148 lines
4.9 KiB
HLSL
// Upgrade NOTE: upgraded instancing buffer 'Props' to new syntax.
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// material
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sampler2D _MainTex;
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fixed4 _Color;
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fixed4 _ColorB;
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fixed _RandomDarkening;
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fixed _RootAmbient;
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fixed _Speed;
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fixed _WavesSpeed;
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float _Wetness;
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//#ifdef FAR_CULL_ON
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//fixed _CullFarStart;
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//fixed _CullFarDistance;
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//#endif
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fixed _WindAffectDistance;
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// color areas
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sampler2D _AG_ColorNoiseTex;
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float4 _AG_ColorNoiseArea;
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// wind uniforms
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sampler2D _AW_WavesTex;
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float4 _AW_DIR;
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// touch react
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#ifdef TOUCH_BEND_ON
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sampler2D _TouchReact_Buffer;
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float4 _TouchReact_Pos;
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#endif
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struct Input
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{
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float2 uv_MainTex;
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float3 worldPos;
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float3 color : COLOR;
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float4 modifiedColor;
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};
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UNITY_INSTANCING_BUFFER_START(Props)
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// put more per-instance properties here
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UNITY_INSTANCING_BUFFER_END(Props)
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inline fixed rand(float2 co)
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{
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return frac(sin(dot(co ,half2(12.9898, 78.233))) * 43758.5453);
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}
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void vert (inout appdata_full v, out Input o)
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{
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UNITY_INITIALIZE_OUTPUT(Input,o);
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float3 transformPosition = mul(unity_ObjectToWorld, float4(0,0,0,1));
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float distanceToCamera = length(transformPosition - _WorldSpaceCameraPos.xyz);
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//#ifdef FAR_CULL_ON_SIMPLE
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//float cull = 1.0 - saturate((distanceToCamera - _CullFarStart)/ _CullFarDistance);
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//if(cull > 0)
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//{
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//#endif
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float3 pos = mul(unity_ObjectToWorld, v.vertex);
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float3 result = pos;
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#ifdef TOUCH_BEND_ON
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float2 tbPos = saturate((float2(pos.x,-pos.z) - _TouchReact_Pos.xz)/_TouchReact_Pos.w);
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float2 touchBend = tex2Dlod(_TouchReact_Buffer, float4(tbPos,0,0));
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touchBend.y *= 1.0 - length(tbPos - 0.5) * 2; // clip texture "clamp" bugs
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if(touchBend.y > 0.01)
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result.y = min(result.y, touchBend.x * 10000);
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#endif
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UNITY_BRANCH
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if(distanceToCamera < _WindAffectDistance)
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{
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#define FORCE _AW_DIR.y
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#define AW_WavesSize _AW_DIR.w
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#define AW_wavesPos (pos.xz - _AW_DIR.xz * _Time.y * FORCE * _WavesSpeed)
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#define AW_windWave (tex2Dlod(_AW_WavesTex, float4(AW_wavesPos/AW_WavesSize,0,0)).r)
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float force = FORCE * AW_windWave;
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float time = _Time.y * FORCE * _Speed;
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float baseBendSin = sin(time + AG_PHASE_SHIFT * 6.28319);
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// main bend calculation
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#define AG_BaseBend (saturate(force) * AG_GRASS_MAXIMUM_WIND_WAVE_BEND + baseBendSin * AG_GRASS_SIN_NOISE_BEND)
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#define AG_BigBend (AG_BaseBend * AG_BEND_FORCE)
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//#define AG_objSpaceWindDir (mul(unity_WorldToObject, float4(_AW_DIR.x, 0, _AW_DIR.z, 0)).xz)
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//v.vertex.xz += AG_objSpaceWindDir * AG_BigBend;
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result.xz += _AW_DIR.xz * AG_BigBend;
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}
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// AO + brightness randomizer
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o.modifiedColor.a = saturate(rand(pos.xz)+_RandomDarkening) * saturate(_RootAmbient + AG_AO_MULTIPLIER);
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// read color areas from texture and lerp colors
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#define AG_ColorNoise_R tex2Dlod (_AG_ColorNoiseTex, float4((pos.xz - _AG_ColorNoiseArea.xz)/_AG_ColorNoiseArea.y,0,0)).r
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o.modifiedColor.rgb = lerp(_Color.rgb, _ColorB.rgb, AG_ColorNoise_R) * o.modifiedColor.a;
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//v.normal = mul(unity_WorldToObject, float4(0, 1, 0, 0));
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v.normal = float3(0,1,0);
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v.tangent.xyz = cross(v.normal,float3(0,0,1));
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// ----
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v.vertex.xyz = mul(unity_WorldToObject, float4(result,1)).xyz;
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//#ifdef FAR_CULL_ON_SIMPLE
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//}
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//v.vertex.xyz *= cull;
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//#endif
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}
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void WaterBRDF(inout half3 Albedo, inout half Smoothness, half wetFactor, half surfPorosity)
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{
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half porosity = saturate((((1 - Smoothness) - 0.5)) / max(surfPorosity, 0.001));
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half factor = lerp(1, 0.2, porosity);
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Albedo *= lerp(1.0, factor, wetFactor);
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Smoothness = lerp(1.0, Smoothness, lerp(1.0, factor, wetFactor));
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}
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void surf(Input IN, inout SurfaceOutput o)
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//void surf(Input IN, inout SurfaceOutputStandard o) //SurfaceOutputStandard
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{
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fixed4 c = tex2D (_MainTex, IN.uv_MainTex);
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o.Albedo = c.rgb * IN.modifiedColor.rgb;
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//o.Smoothness = Luminance(o.Albedo);
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//WaterBRDF(o.Albedo, o.Smoothness, _Wetness, 0.4);
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o.Alpha = c.a;
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}
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