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struct LightweightVertexOutput |
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{ |
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float4 uv01 : TEXCOORD0; // xy: main UV, zw: lightmap UV (directional / non-directional) |
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float3 posWS : TEXCOORD1; |
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float2 uv : TEXCOORD0; |
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float4 lightmapUVOrVertexSH : TEXCOORD1; // holds either lightmapUV or vertex SH. depending on LIGHTMAP_ON |
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float4 posWS : TEXCOORD2; |
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half3 normal : TEXCOORD3; |
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half3 tangent : TEXCOORD2; |
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half3 binormal : TEXCOORD3; |
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half3 normal : TEXCOORD4; |
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#else |
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half3 normal : TEXCOORD2; |
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half3 tangent : TEXCOORD4; |
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half3 binormal : TEXCOORD5; |
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half3 viewDir : TEXCOORD5; |
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half4 fogFactorAndVertexLight : TEXCOORD6; // x: fogFactor, yzw: vertex light |
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#ifndef LIGHTMAP_ON |
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half4 vertexSH : TEXCOORD7; |
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#endif |
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half3 viewDir : TEXCOORD6; |
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half4 fogFactorAndVertexLight : TEXCOORD7; // x: fogFactor, yzw: vertex light |
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float4 clipPos : SV_POSITION; |
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UNITY_VERTEX_OUTPUT_STEREO |
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UNITY_SETUP_INSTANCE_ID(v); |
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o); |
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o.uv01.xy = TRANSFORM_TEX(v.texcoord, _MainTex); |
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#ifdef LIGHTMAP_ON |
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o.uv01.zw = v.lightmapUV * unity_LightmapST.xy + unity_LightmapST.zw; |
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#endif |
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o.uv = TRANSFORM_TEX(v.texcoord, _MainTex); |
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float4 positionWS = mul(unity_ObjectToWorld, v.vertex); |
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half3 viewDirectionWS = SafeNormalize(_WorldSpaceCameraPos - positionWS.xyz); |
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o.posWS = mul(unity_ObjectToWorld, v.vertex); |
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o.clipPos = mul(UNITY_MATRIX_VP, o.posWS); |
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o.viewDir = SafeNormalize(_WorldSpaceCameraPos - o.posWS.xyz); |
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#if _NORMALMAP |
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OutputTangentToWorld(v.tangent, v.normal, o.tangent, o.binormal, o.normal); |
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#else |
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o.normal = UnityObjectToWorldNormal(v.normal); |
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#endif |
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// initializes o.normal and if _NORMALMAP also o.tangent and o.binormal |
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OUTPUT_NORMAL(v, o); |
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float4 clipPos = mul(UNITY_MATRIX_VP, positionWS); |
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#ifndef LIGHTMAP_ON |
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o.vertexSH = half4(EvaluateSHPerVertex(o.normal), 0.0); |
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#endif |
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// We either sample GI from lightmap or SH. lightmap UV and vertex SH coefficients |
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// are packed in lightmapUVOrVertexSH to save interpolator. |
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// The following funcions initialize |
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OUTPUT_LIGHTMAP_UV(v.lightmapUV, unity_LightmapST, o.lightmapUVOrVertexSH); |
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OUTPUT_SH(o.normal, o.lightmapUVOrVertexSH); |
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o.posWS = positionWS; |
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o.viewDir = viewDirectionWS; |
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o.fogFactorAndVertexLight.yzw = VertexLighting(positionWS.xyz, o.normal); |
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o.fogFactorAndVertexLight.x = ComputeFogFactor(clipPos.z); |
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o.clipPos = clipPos; |
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half3 vertexLight = VertexLighting(o.posWS.xyz, o.normal); |
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half fogFactor = ComputeFogFactor(o.clipPos.z); |
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o.fogFactorAndVertexLight = half4(fogFactor, vertexLight); |
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return o; |
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} |
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{ |
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SurfaceData surfaceData; |
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InitializeStandardLitSurfaceData(IN.uv01.xy, surfaceData); |
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InitializeStandardLitSurfaceData(IN.uv, surfaceData); |
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#if _NORMALMAP |
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half3 normalWS = TangentToWorldNormal(surfaceData.normal, IN.tangent, IN.binormal, IN.normal); |
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#if LIGHTMAP_ON |
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half3 indirectDiffuse = SampleLightmap(IN.uv01.zw, normalWS); |
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#else |
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half3 indirectDiffuse = EvaluateSHPerPixel(normalWS, IN.vertexSH); |
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#endif |
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half3 indirectDiffuse = SampleGI(IN.lightmapUVOrVertexSH, normalWS); |
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float fogFactor = IN.fogFactorAndVertexLight.x; |
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float fogFactor = IN.fogFactorAndVertexLight.x; |
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half4 color = LightweightFragmentPBR(IN.posWS, normalWS, IN.viewDir, indirectDiffuse, IN.fogFactorAndVertexLight.yzw, surfaceData.albedo, surfaceData.metallic, surfaceData.specular, surfaceData.smoothness, surfaceData.occlusion, surfaceData.emission, surfaceData.alpha); |
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// Computes fog factor per-vertex |
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// Used for StandardSimpleLighting shader |
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half4 LitPassFragmentSimple(LightweightVertexOutput IN) : SV_Target |
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{ |
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float2 uv = IN.uv01.xy; |
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float2 lightmapUV = IN.uv01.zw; |
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float2 uv = IN.uv; |
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half4 diffuseAlpha = tex2D(_MainTex, uv); |
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half3 diffuse = LIGHTWEIGHT_GAMMA_TO_LINEAR(diffuseAlpha.rgb) * _Color.rgb; |
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half alpha = diffuseAlpha.a * _Color.a; |
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#endif |
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#ifdef _ALPHATEST_ON |
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clip(alpha - _Cutoff); |
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#endif |
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AlphaDiscard(alpha, _Cutoff); |
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#if _NORMALMAP |
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half3 normalTangent = Normal(uv); |
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half3 viewDirectionWS = SafeNormalize(IN.viewDir.xyz); |
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float3 positionWS = IN.posWS.xyz; |
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#if defined(LIGHTMAP_ON) |
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half3 diffuseGI = SampleLightmap(lightmapUV, normalWS); |
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#else |
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half3 diffuseGI = EvaluateSHPerPixel(normalWS, IN.vertexSH); |
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#endif |
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half3 diffuseGI = SampleGI(IN.lightmapUVOrVertexSH, normalWS); |
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#if _VERTEX_LIGHTS |
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diffuseGI += IN.fogFactorAndVertexLight.yzw; |
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Felipe Lira
7 年前
