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Split Standard PBS and Simple lighting vertex shaders as shininess was being used in PBS.

/lw-shader-optimization
Felipe Lira 7 年前
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5c358cc9
共有 2 个文件被更改,包括 56 次插入4 次删除
  1. 58
      ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/LightweightPassLit.hlsl
  2. 2
      ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightStandardSimpleLighting.shader

58
ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/LightweightPassLit.hlsl


// Vertex and Fragment functions //
///////////////////////////////////////////////////////////////////////////////
// Vertex: Used for Standard and StandardSimpleLighting shaders
// Used in Standard (Physically Based) shader
LightweightVertexOutput LitPassVertex(LightweightVertexInput v)
{
LightweightVertexOutput o = (LightweightVertexOutput)0;

o.uv = TransformMainTextureCoord(v.texcoord);
o.posWSShininess.xyz = TransformObjectToWorld(v.vertex.xyz);
o.posWSShininess.w = _Shininess * 128.0;
o.clipPos = TransformWorldToHClip(o.posWSShininess.xyz);
half3 viewDir = VertexViewDirWS(GetCameraPositionWS() - o.posWSShininess.xyz);

return o;
}
// Used for Standard shader
// Used in Standard (Physically Based) shader
half4 LitPassFragment(LightweightVertexOutput IN) : SV_Target
{
UNITY_SETUP_INSTANCE_ID(IN);

ApplyFog(color.rgb, inputData.fogCoord);
return color;
}
// Used in Standard (Simple Lighting) shader
// TODO: we only need to specialise this because of _Shininess prop
// Once we refactor SimpleLighting shader we will be able to share vertex
// between PBS and Simple
LightweightVertexOutput LitPassVertexSimple(LightweightVertexInput v)
{
LightweightVertexOutput o = (LightweightVertexOutput)0;
UNITY_SETUP_INSTANCE_ID(v);
UNITY_TRANSFER_INSTANCE_ID(v, o);
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
o.uv = TransformMainTextureCoord(v.texcoord);
o.posWSShininess.xyz = TransformObjectToWorld(v.vertex.xyz);
o.posWSShininess.w = _Shininess * 128.0;
o.clipPos = TransformWorldToHClip(o.posWSShininess.xyz);
half3 viewDir = VertexViewDirWS(GetCameraPositionWS() - o.posWSShininess.xyz);
#ifdef _NORMALMAP
o.normal.w = viewDir.x;
o.tangent.w = viewDir.y;
o.binormal.w = viewDir.z;
#else
o.viewDir = viewDir;
#endif
// initializes o.normal and if _NORMALMAP also o.tangent and o.binormal
OUTPUT_NORMAL(v, o);
// 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.lightmapUV, unity_LightmapST, o.lightmapUV);
OUTPUT_SH(o.normal.xyz, o.vertexSH);
half3 vertexLight = VertexLighting(o.posWSShininess.xyz, o.normal.xyz);
half fogFactor = ComputeFogFactor(o.clipPos.z);
o.fogFactorAndVertexLight = half4(fogFactor, vertexLight);
#ifdef _SHADOWS_ENABLED
#if SHADOWS_SCREEN
o.shadowCoord = ComputeShadowCoord(o.clipPos);
#else
o.shadowCoord = TransformWorldToShadowCoord(o.posWSShininess.xyz);
#endif
#endif
return o;
}
// Used for StandardSimpleLighting shader

2
ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightStandardSimpleLighting.shader


// GPU Instancing
#pragma multi_compile_instancing
#pragma vertex LitPassVertex
#pragma vertex LitPassVertexSimple
#pragma fragment LitPassFragmentSimple
#define BUMP_SCALE_NOT_SUPPORTED 1
#include "LWRP/ShaderLibrary/LightweightPassLit.hlsl"

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