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//-------------------------------------------------------------------------------------
// Fill SurfaceData/Builtin data function
//-------------------------------------------------------------------------------------
#include "CoreRP/ShaderLibrary/Packing.hlsl"
#include "CoreRP/ShaderLibrary/Sampling/SampleUVMapping.hlsl"
#include "CoreRP/ShaderLibrary/EntityLighting.hlsl"
#include "../MaterialUtilities.hlsl"
#if (SHADERPASS == SHADERPASS_DBUFFER_PROJECTOR)
void GetSurfaceData(float2 texCoordDS, float4x4 normalToWorld, out DecalSurfaceData surfaceData)
#elif (SHADERPASS == SHADERPASS_DBUFFER_MESH)
void GetSurfaceData(FragInputs input, out DecalSurfaceData surfaceData)
#endif
{
surfaceData.baseColor = _BaseColor;
surfaceData.normalWS = float4(0,0,0,0);
surfaceData.mask = float4(0,0,0,0);
surfaceData.HTileMask = 0;
#if (SHADERPASS == SHADERPASS_DBUFFER_PROJECTOR)
float totalBlend = clamp(normalToWorld[0][3], 0.0f, 1.0f);
float2 scale = float2(normalToWorld[3][0], normalToWorld[3][1]);
float2 offset = float2(normalToWorld[3][2], normalToWorld[3][3]);
float2 texCoords = texCoordDS * scale + offset;
#elif (SHADERPASS == SHADERPASS_DBUFFER_MESH)
float totalBlend = _DecalBlend;
float2 texCoords = input.texCoord0;
#endif
#if _COLORMAP
surfaceData.baseColor *= SAMPLE_TEXTURE2D(_BaseColorMap, sampler_BaseColorMap, texCoords);
#endif
surfaceData.baseColor.w *= totalBlend;
totalBlend = surfaceData.baseColor.w; // base alpha affects all other channels;
// outside _COLORMAP because we still have base color
#if _ALBEDOCONTRIBUTION
surfaceData.HTileMask |= DBUFFERHTILEBIT_DIFFUSE;
#else
surfaceData.baseColor.w = 0; // dont blend any albedo
#endif
#if _NORMALMAP
float3 normalTS = UnpackNormalmapRGorAG(SAMPLE_TEXTURE2D(_NormalMap, sampler_NormalMap, texCoords));
#if (SHADERPASS == SHADERPASS_DBUFFER_PROJECTOR)
float3 normalWS = mul((float3x3)normalToWorld, normalTS);
#elif (SHADERPASS == SHADERPASS_DBUFFER_MESH)
float3 normalWS;
GetNormalWS(input, 0, normalTS, normalWS);
#endif
surfaceData.normalWS.xyz = normalWS * 0.5f + 0.5f;
surfaceData.normalWS.w = totalBlend;
surfaceData.HTileMask |= DBUFFERHTILEBIT_NORMAL;
#endif
#if _MASKMAP
surfaceData.mask = SAMPLE_TEXTURE2D(_MaskMap, sampler_MaskMap, texCoords);
surfaceData.mask.z = surfaceData.mask.w;
surfaceData.mask.w = totalBlend;
surfaceData.HTileMask |= DBUFFERHTILEBIT_MASK;
#endif
}