UnityGame/Library/PackageCache/com.unity.render-pipelines.universal/Editor/ShaderGraph/Includes/SixWayForwardPass.hlsl
2024-10-27 10:53:47 +03:00

123 lines
4.2 KiB
HLSL

void InitializeInputData(Varyings input, bool frontFace, out InputData inputData)
{
inputData = (InputData)0;
inputData.positionWS = input.positionWS;
float signNormal = frontFace ? 1.0f : -1.0f;
inputData.normalWS = signNormal * input.normalWS;
inputData.normalWS = NormalizeNormalPerPixel(inputData.normalWS);
float crossSign = (input.tangentWS.w > 0.0 ? 1.0 : -1.0) * GetOddNegativeScale();
float3 bitangent = crossSign * cross(input.normalWS.xyz, input.tangentWS.xyz);
inputData.tangentToWorld = half3x3(input.tangentWS.xyz, bitangent.xyz, signNormal * input.normalWS);
inputData.viewDirectionWS = GetWorldSpaceNormalizeViewDir(input.positionWS);
#if defined(REQUIRES_VERTEX_SHADOW_COORD_INTERPOLATOR)
inputData.shadowCoord = input.shadowCoord;
#elif defined(MAIN_LIGHT_CALCULATE_SHADOWS)
inputData.shadowCoord = TransformWorldToShadowCoord(inputData.positionWS);
#else
inputData.shadowCoord = float4(0, 0, 0, 0);
#endif
inputData.fogCoord = InitializeInputDataFog(float4(input.positionWS, 1.0), input.fogFactorAndVertexLight.x);
inputData.vertexLighting = input.fogFactorAndVertexLight.yzw;
inputData.normalizedScreenSpaceUV = GetNormalizedScreenSpaceUV(input.positionCS);
inputData.shadowMask = SAMPLE_SHADOWMASK(input.staticLightmapUV);
#if defined(DEBUG_DISPLAY)
#if defined(DYNAMICLIGHTMAP_ON)
inputData.dynamicLightmapUV = input.dynamicLightmapUV.xy;
#endif
#if defined(LIGHTMAP_ON)
inputData.staticLightmapUV = input.staticLightmapUV;
#else
inputData.vertexSH = input.sh;
#endif
#if defined(USE_APV_PROBE_OCCLUSION)
inputData.probeOcclusion = input.probeOcclusion;
#endif
inputData.positionCS = input.positionCS;
#endif
}
PackedVaryings vert(Attributes input)
{
Varyings output = (Varyings)0;
output = BuildVaryings(input);
PackedVaryings packedOutput = (PackedVaryings)0;
packedOutput = PackVaryings(output);
return packedOutput;
}
void frag(
PackedVaryings packedInput
, out half4 outColor : SV_Target0
, bool frontFace : FRONT_FACE_SEMANTIC
#ifdef _WRITE_RENDERING_LAYERS
, out float4 outRenderingLayers : SV_Target1
#endif
)
{
Varyings unpacked = UnpackVaryings(packedInput);
UNITY_SETUP_INSTANCE_ID(unpacked);
UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(unpacked);
SurfaceDescription surfaceDescription = BuildSurfaceDescription(unpacked);
#if defined(_SURFACE_TYPE_TRANSPARENT)
bool isTransparent = true;
#else
bool isTransparent = false;
#endif
#if defined(_ALPHATEST_ON)
half alpha = AlphaDiscard(surfaceDescription.Alpha, surfaceDescription.AlphaClipThreshold);
#elif defined(_SURFACE_TYPE_TRANSPARENT)
half alpha = surfaceDescription.Alpha;
#else
half alpha = half(1.0);
#endif
#if defined(LOD_FADE_CROSSFADE) && USE_UNITY_CROSSFADE
LODFadeCrossFade(unpacked.positionCS);
#endif
InputData inputData;
InitializeInputData(unpacked, frontFace, inputData);
#ifdef VARYINGS_NEED_TEXCOORD0
SETUP_DEBUG_TEXTURE_DATA(inputData, unpacked.texCoord0);
#else
SETUP_DEBUG_TEXTURE_DATA_NO_UV(inputData);
#endif
SixWaySurfaceData surfaceData;
surfaceData.rightTopBack = surfaceDescription.RightTopBack * INV_PI;
surfaceData.leftBottomFront = surfaceDescription.LeftBottomFront * INV_PI;
surfaceData.emission = surfaceDescription.Emission;
surfaceData.baseColor = surfaceDescription.BaseColor;
surfaceData.occlusion = surfaceDescription.Occlusion;
surfaceData.alpha = saturate(alpha);
surfaceData.diffuseGIData0 = unpacked.diffuseGIData0;
surfaceData.diffuseGIData1 = unpacked.diffuseGIData1;
surfaceData.diffuseGIData2 = unpacked.diffuseGIData2;
#if defined(_SIX_WAY_COLOR_ABSORPTION)
surfaceData.absorptionRange = INV_PI + saturate(surfaceDescription.AbsorptionStrength) * (1 - INV_PI);
#endif
half4 color = UniversalFragmentSixWay(inputData, surfaceData);
color.rgb = MixFog(color.rgb, inputData.fogCoord);
color.a = OutputAlpha(color.a, isTransparent);
outColor = color;
#ifdef _WRITE_RENDERING_LAYERS
uint renderingLayers = GetMeshRenderingLayer();
outRenderingLayers = float4(EncodeMeshRenderingLayer(renderingLayers), 0, 0, 0);
#endif
}