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121 行
4.1 KiB
121 行
4.1 KiB
#if defined(SHADERPASS_SHADOWCASTER)
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float3 _LightDirection;
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#endif
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Varyings BuildVaryings(Attributes input)
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{
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Varyings output = (Varyings)0;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_TRANSFER_INSTANCE_ID(input, output);
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#if defined(FEATURES_GRAPH_VERTEX)
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// Evaluate Vertex Graph
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VertexDescriptionInputs vertexDescriptionInputs = BuildVertexDescriptionInputs(input);
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VertexDescription vertexDescription = VertexDescriptionFunction(vertexDescriptionInputs);
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// Assign modified vertex attributes
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input.positionOS = vertexDescription.VertexPosition;
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#if defined(VARYINGS_NEED_NORMAL_WS)
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input.normalOS = vertexDescription.VertexNormal;
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#endif //FEATURES_GRAPH_NORMAL
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#if defined(VARYINGS_NEED_TANGENT_WS)
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input.tangentOS.xyz = vertexDescription.VertexTangent.xyz;
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#endif //FEATURES GRAPH TANGENT
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#endif //FEATURES_GRAPH_VERTEX
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// TODO: Avoid path via VertexPositionInputs (Universal)
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VertexPositionInputs vertexInput = GetVertexPositionInputs(input.positionOS.xyz);
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// Returns the camera relative position (if enabled)
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float3 positionWS = TransformObjectToWorld(input.positionOS);
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#ifdef ATTRIBUTES_NEED_NORMAL
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float3 normalWS = TransformObjectToWorldNormal(input.normalOS);
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#else
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// Required to compile ApplyVertexModification that doesn't use normal.
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float3 normalWS = float3(0.0, 0.0, 0.0);
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#endif
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#ifdef ATTRIBUTES_NEED_TANGENT
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float4 tangentWS = float4(TransformObjectToWorldDir(input.tangentOS.xyz), input.tangentOS.w);
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#endif
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// TODO: Change to inline ifdef
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// Do vertex modification in camera relative space (if enabled)
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#if defined(HAVE_VERTEX_MODIFICATION)
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ApplyVertexModification(input, normalWS, positionWS, _TimeParameters.xyz);
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#endif
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#ifdef VARYINGS_NEED_POSITION_WS
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output.positionWS = positionWS;
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#endif
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#ifdef VARYINGS_NEED_NORMAL_WS
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output.normalWS = NormalizeNormalPerVertex(normalWS);
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#endif
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#ifdef VARYINGS_NEED_TANGENT_WS
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output.tangentWS = normalize(tangentWS);
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#endif
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#if defined(SHADERPASS_SHADOWCASTER)
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// Define shadow pass specific clip position for Universal
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output.positionCS = TransformWorldToHClip(ApplyShadowBias(positionWS, normalWS, _LightDirection));
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#if UNITY_REVERSED_Z
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output.positionCS.z = min(output.positionCS.z, output.positionCS.w * UNITY_NEAR_CLIP_VALUE);
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#else
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output.positionCS.z = max(output.positionCS.z, output.positionCS.w * UNITY_NEAR_CLIP_VALUE);
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#endif
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#elif defined(SHADERPASS_META)
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output.positionCS = MetaVertexPosition(float4(input.positionOS, 0), input.uv1, input.uv2, unity_LightmapST, unity_DynamicLightmapST);
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#else
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output.positionCS = TransformWorldToHClip(positionWS);
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#endif
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#if defined(VARYINGS_NEED_TEXCOORD0) || defined(VARYINGS_DS_NEED_TEXCOORD0)
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output.texCoord0 = input.uv0;
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#endif
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#if defined(VARYINGS_NEED_TEXCOORD1) || defined(VARYINGS_DS_NEED_TEXCOORD1)
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output.texCoord1 = input.uv1;
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#endif
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#if defined(VARYINGS_NEED_TEXCOORD2) || defined(VARYINGS_DS_NEED_TEXCOORD2)
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output.texCoord2 = input.uv2;
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#endif
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#if defined(VARYINGS_NEED_TEXCOORD3) || defined(VARYINGS_DS_NEED_TEXCOORD3)
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output.texCoord3 = input.uv3;
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#endif
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#if defined(VARYINGS_NEED_COLOR) || defined(VARYINGS_DS_NEED_COLOR)
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output.color = input.color;
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#endif
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#ifdef VARYINGS_NEED_VIEWDIRECTION_WS
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output.viewDirectionWS = _WorldSpaceCameraPos.xyz - positionWS;
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#endif
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#ifdef VARYINGS_NEED_BITANGENT_WS
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output.bitangentWS = cross(normalWS, tangentWS.xyz) * tangentWS.w;
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#endif
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#ifdef VARYINGS_NEED_SCREENPOSITION
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output.screenPosition = ComputeScreenPos(output.positionCS, _ProjectionParams.x);
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#endif
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#if defined(SHADERPASS_FORWARD)
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OUTPUT_LIGHTMAP_UV(input.uv1, unity_LightmapST, output.lightmapUV);
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OUTPUT_SH(normalWS, output.sh);
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#endif
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#ifdef VARYINGS_NEED_FOG_AND_VERTEX_LIGHT
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half3 vertexLight = VertexLighting(positionWS, normalWS);
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half fogFactor = ComputeFogFactor(output.positionCS.z);
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output.fogFactorAndVertexLight = half4(fogFactor, vertexLight);
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#endif
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#ifdef _MAIN_LIGHT_SHADOWS
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output.shadowCoord = GetShadowCoord(vertexInput);
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#endif
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return output;
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}
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