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BobSong
2025-06-21 21:58:06 +08:00
parent d61516a576
commit e9f76d0f11
1566 changed files with 9218 additions and 300913 deletions
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128
Packages/com.waveharmonic.crest/Runtime/Shaders/Data/Input/Hidden/DepthProbe.compute
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// Crest Water System
// Copyright © 2024 Wave Harmonic. All rights reserved.
// Copies the depth buffer into the cache as object-space height. Object-space is
// used instead of world-space to allow relative movement of baked depth caches
// afterwards. It is converted to world-space in another shader before writing into
// the LOD data.
#pragma kernel CrestCopy
#pragma kernel CrestFill
#pragma multi_compile_local __ d_Crest_BackFaceInclusion
#include "HLSLSupport.cginc"
#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Constants.hlsl"
#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Macros.hlsl"
#include "Packages/com.waveharmonic.crest/Runtime/Shaders/Library/Globals.hlsl"
Texture2D<float> _CamDepthBuffer;
RWTexture2D<float2> _Crest_Target;
#if d_Crest_BackFaceInclusion
Texture2D<float> _Crest_CameraDepthBufferBackfaces;
#endif
CBUFFER_START(CrestPerMaterial)
float4 _HeightNearHeightFar;
float4 _CustomZBufferParams;
float _HeightOffset;
float _Crest_PreviousPlane;
CBUFFER_END
m_CrestNameSpace
float CustomLinear01Depth(const float z)
{
return (1.0 - z * _CustomZBufferParams.x) / _CustomZBufferParams.y;
}
void Copy(const uint3 id)
{
const float deviceDepth = _CamDepthBuffer[id.xy].x;
// If geometry has been clipped by far plane, set the maximum depth.
if (deviceDepth <= 0.0)
{
_Crest_Target[id.xy] = -CREST_WATER_DEPTH_BASELINE;
return;
}
const float linear01Z = CustomLinear01Depth(deviceDepth);
const float altitude =
#if UNITY_REVERSED_Z
lerp(_HeightNearHeightFar.y, _HeightNearHeightFar.x, linear01Z);
#else
lerp(_HeightNearHeightFar.x, _HeightNearHeightFar.y, linear01Z);
#endif
_Crest_Target[id.xy] = altitude - _HeightOffset;
}
void Fill(const uint3 id)
{
const float deviceDepth = _CamDepthBuffer[id.xy].x;
#if d_Crest_BackFaceInclusion
const float deviceBackFaceDepth = _Crest_CameraDepthBufferBackfaces[id.xy].x;
#endif
// If geometry has been clipped by far plane, set the maximum depth.
if (deviceDepth <= 0.0)
{
#if d_Crest_BackFaceInclusion
if (deviceBackFaceDepth <= 0.0)
#endif
{
return;
}
}
// If not a hole, do not proceed.
// We must be limiteed by precision on trying to represent depth baseline
if (_Crest_Target[id.xy].x > -CREST_WATER_DEPTH_BASELINE)
{
#if d_Crest_BackFaceInclusion
if (deviceBackFaceDepth <= 0.0)
#endif
{
return;
}
}
const float linear01Z = CustomLinear01Depth(deviceDepth);
const float altitude =
#if UNITY_REVERSED_Z
lerp(_HeightNearHeightFar.y, _HeightNearHeightFar.x, linear01Z);
#else
lerp(_HeightNearHeightFar.x, _HeightNearHeightFar.y, linear01Z);
#endif
#if d_Crest_BackFaceInclusion
{
const float linear01Z = CustomLinear01Depth(deviceBackFaceDepth);
const float altitude =
#if UNITY_REVERSED_Z
lerp(_HeightNearHeightFar.y, _HeightNearHeightFar.x, linear01Z);
#else
lerp(_HeightNearHeightFar.x, _HeightNearHeightFar.y, linear01Z);
#endif
// Check backfaces.
if (altitude > (_Crest_PreviousPlane + 0.00001))
{
return;
}
}
#endif
_Crest_Target[id.xy] = altitude - _HeightOffset;
}
m_CrestNameSpaceEnd
m_CrestKernelDefault(Copy)
m_CrestKernelDefault(Fill)