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130 lines
3.3 KiB
130 lines
3.3 KiB
// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
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#ifndef SPEEDTREE_COMMON_INCLUDED
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#define SPEEDTREE_COMMON_INCLUDED
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#include "UnityCG.cginc"
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#define SPEEDTREE_Y_UP
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#ifdef GEOM_TYPE_BRANCH_DETAIL
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#define GEOM_TYPE_BRANCH
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#endif
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#include "SpeedTreeVertexDepth.cginc"
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// Define Input structure
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struct Input
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{
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fixed4 color;
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half3 interpolator1;
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#ifdef GEOM_TYPE_BRANCH_DETAIL
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half3 interpolator2;
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#endif
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UNITY_DITHER_CROSSFADE_COORDS
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half depth;
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half ShadowDepth;
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float4 screenUV;
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};
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// Define uniforms
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float4 _ShadowCameraPosition;
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#define mainTexUV interpolator1.xy
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//sampler2D _MainTex;
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#ifdef GEOM_TYPE_BRANCH_DETAIL
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#define Detail interpolator2
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sampler2D _DetailTex;
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#endif
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//#if defined(GEOM_TYPE_FROND) || defined(GEOM_TYPE_LEAF) || defined(GEOM_TYPE_FACING_LEAF)
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// #define SPEEDTREE_ALPHATEST
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// fixed _Cutoff;
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//#endif
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#ifdef EFFECT_HUE_VARIATION
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#define HueVariationAmount interpolator1.z
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half4 _HueVariation;
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#endif
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#if defined(EFFECT_BUMP) && !defined(LIGHTMAP_ON)
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sampler2D _BumpMap;
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#endif
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//fixed4 _Color;
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// Vertex processing
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void SpeedTreeVert(inout SpeedTreeVB IN, out Input OUT)
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{
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UNITY_INITIALIZE_OUTPUT(Input, OUT);
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OUT.depth = -(UnityObjectToViewPos(IN.vertex).z/* * _ProjectionParams.w*/);
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float4 pos = UnityObjectToClipPos(IN.vertex);
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OUT.screenUV = ComputeScreenPos(pos);
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OUT.ShadowDepth = length(mul(unity_ObjectToWorld, IN.vertex).xyz - _ShadowCameraPosition.xyz);
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OUT.mainTexUV = IN.texcoord.xy;
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//OUT.color = _Color;
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// OUT.color.rgb *= IN.color.r; // ambient occlusion factor
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#ifdef EFFECT_HUE_VARIATION
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float hueVariationAmount = frac(unity_ObjectToWorld[0].w + unity_ObjectToWorld[1].w + unity_ObjectToWorld[2].w);
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hueVariationAmount += frac(IN.vertex.x + IN.normal.y + IN.normal.x) * 0.5 - 0.3;
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OUT.HueVariationAmount = saturate(hueVariationAmount * _HueVariation.a);
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#endif
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#ifdef GEOM_TYPE_BRANCH_DETAIL
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// The two types are always in different sub-range of the mesh so no interpolation (between detail and blend) problem.
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OUT.Detail.xy = IN.texcoord2.xy;
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if (IN.color.a == 0) // Blend
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OUT.Detail.z = IN.texcoord2.z;
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else // Detail texture
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OUT.Detail.z = 2.5f; // stay out of Blend's .z range
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#endif
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OffsetSpeedTreeVertex(IN, unity_LODFade.x);
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UNITY_TRANSFER_DITHER_CROSSFADE(OUT, IN.vertex)
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}
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// Fragment processing
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#if defined(EFFECT_BUMP) && !defined(LIGHTMAP_ON)
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#define SPEEDTREE_DATA_NORMAL fixed3 Normal;
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#define SPEEDTREE_COPY_NORMAL(to, from) to.Normal = from.Normal;
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#else
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#define SPEEDTREE_DATA_NORMAL
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#define SPEEDTREE_COPY_NORMAL(to, from)
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#endif
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#define SPEEDTREE_COPY_FRAG(to, from) \
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to.Alpha = from.Alpha; \
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SPEEDTREE_COPY_NORMAL(to, from)
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struct SpeedTreeFragOut
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{
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// fixed3 Albedo;
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fixed Alpha;
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SPEEDTREE_DATA_NORMAL
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};
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void SpeedTreeFrag(Input IN, out SpeedTreeFragOut OUT)
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{
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half4 diffuseColor = tex2D(_MainTex, IN.mainTexUV);
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OUT.Alpha = diffuseColor.a * _Color.a;
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#ifdef SPEEDTREE_ALPHATEST
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clip(OUT.Alpha - _Cutoff);
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#endif
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// UNITY_APPLY_DITHER_CROSSFADE(IN)
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//OUT.Normal = float3(0, 0, 1);
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// OUT.Albedo = 0;
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}
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#endif // SPEEDTREE_COMMON_INCLUDED
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