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4.4 KiB

Pass
{
Tags{"LightMode" = "LightweightForward"}
${Tags}
${Blending}
${Culling}
${ZTest}
${ZWrite}
HLSLPROGRAM
// Required to compile gles 2.0 with standard srp library
#pragma prefer_hlslcc gles
#pragma exclude_renderers d3d11_9x
#pragma target 2.0
// -------------------------------------
// Lightweight Pipeline keywords
#pragma multi_compile _ _ADDITIONAL_LIGHTS
#pragma multi_compile _ _VERTEX_LIGHTS
#pragma multi_compile _ _MIXED_LIGHTING_SUBTRACTIVE
#pragma multi_compile _ _SHADOWS_ENABLED
// -------------------------------------
// Unity defined keywords
#pragma multi_compile _ DIRLIGHTMAP_COMBINED
#pragma multi_compile _ LIGHTMAP_ON
#pragma multi_compile_fog
//--------------------------------------
// GPU Instancing
#pragma multi_compile_instancing
#pragma vertex vert
#pragma fragment frag
${Defines}
#include "LWRP/ShaderLibrary/Core.hlsl"
#include "LWRP/ShaderLibrary/Lighting.hlsl"
#include "CoreRP/ShaderLibrary/Color.hlsl"
#include "CoreRP/ShaderLibrary/UnityInstancing.hlsl"
#include "ShaderGraphLibrary/Functions.hlsl"
${Graph}
struct GraphVertexOutput
{
float4 clipPos : SV_POSITION;
DECLARE_LIGHTMAP_OR_SH(lightmapUV, vertexSH, 0);
half4 fogFactorAndVertexLight : TEXCOORD1; // x: fogFactor, yzw: vertex light
float4 shadowCoord : TEXCOORD2;
${Interpolators}
UNITY_VERTEX_INPUT_INSTANCE_ID
};
GraphVertexOutput vert (GraphVertexInput v)
{
v = PopulateVertexData(v);
GraphVertexOutput o = (GraphVertexOutput)0;
UNITY_SETUP_INSTANCE_ID(v);
UNITY_TRANSFER_INSTANCE_ID(v, o);
${VertexShader}
float3 lwWNormal = TransformObjectToWorldNormal(v.normal);
float3 lwWorldPos = TransformObjectToWorld(v.vertex.xyz);
float4 clipPos = TransformWorldToHClip(lwWorldPos);
// We either sample GI from lightmap or SH.
// Lightmap UV and vertex SH coefficients use the same interpolator ("float2 lightmapUV" for lightmap or "half3 vertexSH" for SH)
// see DECLARE_LIGHTMAP_OR_SH macro.
// The following funcions initialize the correct variable with correct data
OUTPUT_LIGHTMAP_UV(v.texcoord1, unity_LightmapST, o.lightmapUV);
OUTPUT_SH(lwWNormal, o.vertexSH);
half3 vertexLight = VertexLighting(lwWorldPos, lwWNormal);
half fogFactor = ComputeFogFactor(clipPos.z);
o.fogFactorAndVertexLight = half4(fogFactor, vertexLight);
o.clipPos = clipPos;
#ifdef _SHADOWS_ENABLED
#if SHADOWS_SCREEN
o.shadowCoord = ComputeShadowCoord(clipPos);
#else
o.shadowCoord = TransformWorldToShadowCoord(lwWorldPos);
#endif
#endif
return o;
}
half4 frag (GraphVertexOutput IN) : SV_Target
{
UNITY_SETUP_INSTANCE_ID(IN);
${LocalPixelShader}
SurfaceInputs surfaceInput = (SurfaceInputs)0;
${SurfaceInputs}
SurfaceDescription surf = PopulateSurfaceData(surfaceInput);
float3 Albedo = float3(0.5, 0.5, 0.5);
float3 Specular = float3(0, 0, 0);
float Metallic = 1;
float3 Normal = float3(0, 0, 1);
float3 Emission = 0;
float Smoothness = 0.5;
float Occlusion = 1;
float Alpha = 1;
float AlphaClipThreshold = 0;
${SurfaceOutputRemap}
InputData inputData;
inputData.positionWS = WorldSpacePosition;
#ifdef _NORMALMAP
inputData.normalWS = TangentToWorldNormal(Normal, WorldSpaceTangent, WorldSpaceBiTangent, WorldSpaceNormal);
#else
#if !SHADER_HINT_NICE_QUALITY
inputData.normalWS = WorldSpaceNormal;
#else
inputData.normalWS = normalize(WorldSpaceNormal);
#endif
#endif
#if !SHADER_HINT_NICE_QUALITY
// viewDirection should be normalized here, but we avoid doing it as it's close enough and we save some ALU.
inputData.viewDirectionWS = WorldSpaceViewDirection;
#else
inputData.viewDirectionWS = normalize(WorldSpaceViewDirection);
#endif
inputData.shadowCoord = IN.shadowCoord;
inputData.fogCoord = IN.fogFactorAndVertexLight.x;
inputData.vertexLighting = IN.fogFactorAndVertexLight.yzw;
inputData.bakedGI = SAMPLE_GI(IN.lightmapUV, IN.vertexSH, inputData.normalWS);
half4 color = LightweightFragmentPBR(
inputData,
Albedo,
Metallic,
Specular,
Smoothness,
Occlusion,
Emission,
Alpha);
// Computes fog factor per-vertex
ApplyFog(color.rgb, IN.fogFactorAndVertexLight.x);
#if _AlphaClip
clip(Alpha - AlphaClipThreshold);
#endif
return color;
}
ENDHLSL
}