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42 lines
1.7 KiB
42 lines
1.7 KiB
#pragma kernel FindVerticalDisplacements
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#pragma only_renderers d3d11 playstation xboxone xboxseries vulkan metal switch switch2
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// #pragma enable_d3d11_debug_symbols
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// Required for finding the vertical displacements
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#pragma multi_compile WATER_DECAL_PARTIAL WATER_DECAL_COMPLETE
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#pragma multi_compile WATER_ONE_BAND WATER_TWO_BANDS WATER_THREE_BANDS
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#pragma multi_compile _ WATER_LOCAL_CURRENT
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// Required to be defined for some includes
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#define WATER_SIMULATION
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// SRP generic includes
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/Water/Shaders/SampleWaterSurface.hlsl"
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// The set of input position we need to process
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RWStructuredBuffer<float> _WaterCameraHeightBufferRW;
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// We allow up to 10 steps to figure out the height of the point
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#define SEARCH_ITERATION_COUNT 8
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// We consider that we found the point if we were able to
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#define SEARCH_DISTANCE_THRESHOLD 0.001
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[numthreads(1, 1, 1)]
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void FindVerticalDisplacements(uint3 currentThread : SV_DispatchThreadID)
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{
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UNITY_XR_ASSIGN_VIEW_INDEX(currentThread.z);
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int stepCount;
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float currentError;
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float height = FindVerticalDisplacement(_WorldSpaceCameraPos.xyz, SEARCH_ITERATION_COUNT, SEARCH_DISTANCE_THRESHOLD, stepCount, currentError);
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_WaterCameraHeightBufferRW[4 * unity_StereoEyeIndex + 0] = height;
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_WaterCameraHeightBufferRW[4 * unity_StereoEyeIndex + 1] = currentError;
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_WaterCameraHeightBufferRW[4 * unity_StereoEyeIndex + 2] = stepCount;
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_WaterCameraHeightBufferRW[4 * unity_StereoEyeIndex + 3] = 0.0;
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}
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