#include <fftwater.hpp>

Public Member Functions
	FFTWater (float amplitude, vec2 wind_velocity, uvec2 resolution, vec2 size, vec2 normalmap_freq_mod)

void	update (float time)

GLuint	get_height_displacement () const

GLuint	get_gradient_jacobian () const

GLuint	get_normal () const

unsigned	get_displacement_downsample () const

Private Member Functions
cfloat	phillips (vec2 k, float max_l)

void	generate_distribution (cfloat *distribution, vec2 size, float amplitude, float max_l)

void	generate_mipmaps ()

void	compute_ifft ()

void	bake_height_gradient ()

void	update_phase (float time)

void	init_gl_fft ()

void	downsample_distribution (cfloat out, const cfloat in, unsigned rate_log2)

void	compute_mipmap (const GLFFT::Program &program, const GLFFT::Texture &texture, GLenum format, unsigned Nx, unsigned Nz, unsigned level)

void	init_texture (GLFFT::Texture &tex, GLenum format, unsigned levels, unsigned width, unsigned height, GLenum mag_filter, GLenum min_filter)

Private Attributes
vec2	wind_velocity

vec2	wind_dir

unsigned	Nx

unsigned	Nz

vec2	size

vec2	size_normal

float	L

std::normal_distribution< float >	normal_dist {0.0f, 1.0f}

std::default_random_engine	engine

std::vector< cfloat >	distribution

std::vector< cfloat >	distribution_displacement

std::vector< cfloat >	distribution_normal

GLFFT::Program	prog_generate_height

GLFFT::Program	prog_generate_normal

GLFFT::Program	prog_generate_displacement

GLFFT::Program	prog_bake_height_gradient

GLFFT::Program	prog_mipmap_height

GLFFT::Program	prog_mipmap_normal

GLFFT::Program	prog_mipmap_gradient_jacobian

GLFFT::Texture	heightmap [2]

GLFFT::Texture	displacementmap [2]

GLFFT::Texture	normalmap [2]

GLFFT::Texture	heightdisplacementmap [2]

GLFFT::Texture	gradientjacobianmap [2]

unsigned	texture_index = 0

unsigned	normal_levels = 0

unsigned	displacement_downsample = 0

GLFFT::Buffer	distribution_buffer

GLFFT::Buffer	distribution_buffer_displacement

GLFFT::Buffer	distribution_buffer_normal

GLFFT::Buffer	freq_height

GLFFT::Buffer	freq_displacement

GLFFT::Buffer	freq_normal

std::unique_ptr< GLFFT::FFT >	fft_height

std::unique_ptr< GLFFT::FFT >	fft_displacement

std::unique_ptr< GLFFT::FFT >	fft_normal

bool	mipmap_fp16

Static Private Attributes
static constexpr float	G = 9.81f

Detailed Description

Definition at line 34 of file fftwater.hpp.

Constructor & Destructor Documentation

FFTWater::FFTWater	(	float	amplitude,
		vec2	wind_velocity,
		uvec2	resolution,
		vec2	size,
		vec2	normalmap_freq_mod
	)

Definition at line 33 of file fftwater.cpp.

Member Function Documentation

void FFTWater::bake_height_gradient ( )

private

Definition at line 235 of file fftwater.cpp.

void FFTWater::compute_ifft ( )

private

Definition at line 176 of file fftwater.cpp.

void FFTWater::compute_mipmap	(	const GLFFT::Program &	program,
		const GLFFT::Texture &	texture,
		GLenum	format,
		unsigned	Nx,
		unsigned	Nz,
		unsigned	level
	)

private

Definition at line 263 of file fftwater.cpp.

void FFTWater::downsample_distribution	(	cfloat *	out,
		const cfloat *	in,
		unsigned	rate_log2
	)

private

Definition at line 76 of file fftwater.cpp.

void FFTWater::generate_distribution	(	cfloat *	distribution,
		vec2	size,
		float	amplitude,
		float	max_l
	)

private

Definition at line 124 of file fftwater.cpp.

void FFTWater::generate_mipmaps ( )

private

Definition at line 187 of file fftwater.cpp.

unsigned FFTWater::get_displacement_downsample ( ) const

inline

Definition at line 109 of file fftwater.hpp.

GLuint FFTWater::get_gradient_jacobian ( ) const

inline

Definition at line 107 of file fftwater.hpp.

GLuint FFTWater::get_height_displacement ( ) const

inline

Definition at line 106 of file fftwater.hpp.

GLuint FFTWater::get_normal ( ) const

inline

Definition at line 108 of file fftwater.hpp.

void FFTWater::init_gl_fft ( )

private

Definition at line 294 of file fftwater.cpp.

void FFTWater::init_texture	(	GLFFT::Texture &	tex,
		GLenum	format,
		unsigned	levels,
		unsigned	width,
		unsigned	height,
		GLenum	mag_filter,
		GLenum	min_filter
	)

private

Definition at line 288 of file fftwater.cpp.

cfloat FFTWater::phillips	(	vec2	k,
		float	max_l
	)

private

Definition at line 104 of file fftwater.cpp.

void FFTWater::update ( float time )

Definition at line 226 of file fftwater.cpp.

void FFTWater::update_phase ( float time )

private

Definition at line 143 of file fftwater.cpp.

Member Data Documentation

unsigned FFTWater::displacement_downsample = 0

private

Definition at line 78 of file fftwater.hpp.

GLFFT::Texture FFTWater::displacementmap[2]

private

Definition at line 70 of file fftwater.hpp.

std::vector<cfloat> FFTWater::distribution

private

Definition at line 56 of file fftwater.hpp.

GLFFT::Buffer FFTWater::distribution_buffer

private

Definition at line 80 of file fftwater.hpp.

GLFFT::Buffer FFTWater::distribution_buffer_displacement

private

Definition at line 81 of file fftwater.hpp.

GLFFT::Buffer FFTWater::distribution_buffer_normal

private

Definition at line 82 of file fftwater.hpp.

std::vector<cfloat> FFTWater::distribution_displacement

private

Definition at line 57 of file fftwater.hpp.

std::vector<cfloat> FFTWater::distribution_normal

private

Definition at line 58 of file fftwater.hpp.

std::default_random_engine FFTWater::engine

private

Definition at line 53 of file fftwater.hpp.

std::unique_ptr<GLFFT::FFT> FFTWater::fft_displacement

private

Definition at line 87 of file fftwater.hpp.

std::unique_ptr<GLFFT::FFT> FFTWater::fft_height

private

Definition at line 86 of file fftwater.hpp.

std::unique_ptr<GLFFT::FFT> FFTWater::fft_normal

private

Definition at line 88 of file fftwater.hpp.

GLFFT::Buffer FFTWater::freq_displacement

private

Definition at line 84 of file fftwater.hpp.

GLFFT::Buffer FFTWater::freq_height

private

Definition at line 83 of file fftwater.hpp.

GLFFT::Buffer FFTWater::freq_normal

private

Definition at line 85 of file fftwater.hpp.

constexpr float FFTWater::G = 9.81f

staticprivate

Definition at line 54 of file fftwater.hpp.

GLFFT::Texture FFTWater::gradientjacobianmap[2]

private

Definition at line 74 of file fftwater.hpp.

GLFFT::Texture FFTWater::heightdisplacementmap[2]

private

Definition at line 73 of file fftwater.hpp.

GLFFT::Texture FFTWater::heightmap[2]

private

Definition at line 69 of file fftwater.hpp.

float FFTWater::L

private

Definition at line 43 of file fftwater.hpp.

bool FFTWater::mipmap_fp16

private

Definition at line 94 of file fftwater.hpp.

std::normal_distribution<float> FFTWater::normal_dist {0.0f, 1.0f}

private

Definition at line 52 of file fftwater.hpp.

unsigned FFTWater::normal_levels = 0

private

Definition at line 77 of file fftwater.hpp.

GLFFT::Texture FFTWater::normalmap[2]

private

Definition at line 71 of file fftwater.hpp.

unsigned FFTWater::Nx

private

Definition at line 41 of file fftwater.hpp.

unsigned FFTWater::Nz

private

Definition at line 41 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_bake_height_gradient

private

Definition at line 64 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_generate_displacement

private

Definition at line 62 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_generate_height

private

Definition at line 60 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_generate_normal

private

Definition at line 61 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_mipmap_gradient_jacobian

private

Definition at line 67 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_mipmap_height

private

Definition at line 65 of file fftwater.hpp.

GLFFT::Program FFTWater::prog_mipmap_normal

private

Definition at line 66 of file fftwater.hpp.

vec2 FFTWater::size

private

Definition at line 42 of file fftwater.hpp.

vec2 FFTWater::size_normal

private

Definition at line 42 of file fftwater.hpp.

unsigned FFTWater::texture_index = 0

private

Definition at line 76 of file fftwater.hpp.

vec2 FFTWater::wind_dir

private

Definition at line 40 of file fftwater.hpp.

vec2 FFTWater::wind_velocity

private

Definition at line 39 of file fftwater.hpp.

The documentation for this class was generated from the following files:

/mnt/d/working/gitlab/opengles-sdk-android/samples/advanced_samples/FFTOceanWater/jni/fftwater.hpp
/mnt/d/working/gitlab/opengles-sdk-android/samples/advanced_samples/FFTOceanWater/jni/fftwater.cpp

Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation