Turanszki Janos
75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
#pragma once
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#include "CommonInclude.h"
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#include "wiGraphicsDevice.h"
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#include "wiFFTGenerator.h"
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#include "wiScene_Decl.h"
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#include <vector>
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class wiOcean
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{
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public:
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struct OceanParameters
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{
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// Must be power of 2.
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int dmap_dim = 512;
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// Typical value is 1000 ~ 2000
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float patch_length = 50.0f;
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// Adjust the time interval for simulation.
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float time_scale = 0.3f;
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// Amplitude for transverse wave. Around 1.0
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float wave_amplitude = 1000.0f;
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// Wind direction. Normalization not required.
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XMFLOAT2 wind_dir = XMFLOAT2(0.8f, 0.6f);
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// Around 100 ~ 1000
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float wind_speed = 600.0f;
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// This value damps out the waves against the wind direction.
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// Smaller value means higher wind dependency.
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float wind_dependency = 0.07f;
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// The amplitude for longitudinal wave. Must be positive.
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float choppy_scale = 1.3f;
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XMFLOAT4 waterColor = XMFLOAT4(0.0f, 3.0f / 255.0f, 31.0f / 255.0f, 1);
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float waterHeight = 0.0f;
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uint32_t surfaceDetail = 4;
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float surfaceDisplacementTolerance = 2;
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};
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void Create(const OceanParameters& params);
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void UpdateDisplacementMap(const OceanParameters& params, wiGraphics::CommandList cmd) const;
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void Render(const wiScene::CameraComponent& camera, const OceanParameters& params, wiGraphics::CommandList cmd) const;
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const wiGraphics::Texture* getDisplacementMap() const;
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const wiGraphics::Texture* getGradientMap() const;
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static void Initialize();
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bool IsValid() const { return displacementMap.IsValid(); }
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protected:
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wiGraphics::Texture displacementMap; // (RGBA32F)
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wiGraphics::Texture gradientMap; // (RGBA16F)
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void initHeightMap(const OceanParameters& params, XMFLOAT2* out_h0, float* out_omega);
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// Initial height field H(0) generated by Phillips spectrum & Gauss distribution.
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wiGraphics::GPUBuffer buffer_Float2_H0;
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// Angular frequency
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wiGraphics::GPUBuffer buffer_Float_Omega;
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// Height field H(t), choppy field Dx(t) and Dy(t) in frequency domain, updated each frame.
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wiGraphics::GPUBuffer buffer_Float2_Ht;
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// Height & choppy buffer in the space domain, corresponding to H(t), Dx(t) and Dy(t)
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wiGraphics::GPUBuffer buffer_Float_Dxyz;
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wiGraphics::GPUBuffer immutableCB;
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wiGraphics::GPUBuffer perFrameCB;
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};
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