70 lines
2.3 KiB
HLSL
70 lines
2.3 KiB
HLSL
// Stylized Water 3 by Staggart Creations (http://staggart.xyz)
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// COPYRIGHT PROTECTED UNDER THE UNITY ASSET STORE EULA (https://unity.com/legal/as-terms)
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// • Copying or referencing source code for the production of new asset store, or public, content is strictly prohibited!
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// • Uploading this file to a public repository will subject it to an automated DMCA takedown request.
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//#include "../Flowmaps/Flowmap.hlsl"
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TEXTURE2D(_BumpMap);
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SAMPLER(sampler_BumpMap);
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TEXTURE2D(_BumpMapLarge);
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TEXTURE2D(_BumpMapSlope);
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float3 BlendTangentNormals(float3 a, float3 b)
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{
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#if _ADVANCED_SHADING
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return BlendNormalRNM(a, b);
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#else
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return BlendNormal(a, b);
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#endif
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}
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float3 SampleNormals(float2 uv, float2 tiling, float subTiling, float3 positionWS, float2 time, float speed, float subSpeed, float slope, int vFace)
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{
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float4 uvs = PackedUV(uv, tiling, time, speed, subTiling, subSpeed);
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float3 n1 = UnpackNormal(SAMPLE_TEXTURE2D(_BumpMap, sampler_BumpMap, uvs.xy));
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float3 n2 = UnpackNormal(SAMPLE_TEXTURE2D(_BumpMap, sampler_BumpMap, uvs.zw));
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float3 blendedNormals = BlendTangentNormals(n1, n2);
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#if _DISTANCE_NORMALS
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float fadeFactor = DistanceFadeMask(positionWS, _DistanceNormalsFadeDist.x, _DistanceNormalsFadeDist.y, vFace);
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float3 largeBlendedNormals;
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half distanceSubSpeed = -0.9;
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#if _RIVER
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distanceSubSpeed = 0.9;
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#endif
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uvs = PackedUV(uv, _DistanceNormalsTiling.xx, time, speed * 2.0, 2.0, distanceSubSpeed);
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float3 n1b = UnpackNormal(SAMPLE_TEXTURE2D(_BumpMapLarge, sampler_BumpMap, uvs.xy));
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#if _ADVANCED_SHADING //Use 2nd texture sample
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float3 n2b = UnpackNormal(SAMPLE_TEXTURE2D(_BumpMapLarge, sampler_BumpMap, uvs.zw));
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largeBlendedNormals = BlendTangentNormals(n1b, n2b);
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#else
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largeBlendedNormals = n1b;
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#endif
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blendedNormals = lerp(largeBlendedNormals, blendedNormals, fadeFactor);
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#endif
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#if _RIVER
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uvs = PackedUV(uv, tiling, time, speed * _SlopeSpeed, subTiling, subSpeed * _SlopeSpeed);
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uvs.xy = uvs.xy * float2(1, 1-_SlopeStretching);
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float3 n3 = UnpackNormal(SAMPLE_TEXTURE2D(_BumpMapSlope, sampler_BumpMap, uvs.xy));
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#if _ADVANCED_SHADING
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n3 = BlendTangentNormals(n3, UnpackNormal(SAMPLE_TEXTURE2D(_BumpMapSlope, sampler_BumpMap, uvs.zw)));
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#endif
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blendedNormals = lerp(blendedNormals, n3, slope);
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#endif
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#if WAVE_SIMULATION
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BlendWaveSimulation(positionWS, blendedNormals);
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#endif
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return blendedNormals;
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} |