EnvMap.cpp File Reference

#include "dxstdafx.h"
#include "resource.h"
#include <time.h>
#include "Cube.h"
#include "Mesh.h"
#include "Parameters.h"
#include "EnvMap.h"

Defines
#define	MESH0   L"Media\\Objects\\room.x"
#define	MESH1   L"Media\\Objects\\sphere.x"
#define	MESH2   L"Media\\Objects\\column.x"
#define	MESH3   L"Media\\Objects\\teapot.x"
#define	MESH4   L"Media\\Objects\\ring.x"
#define	MESH5   L"Media\\Objects\\lamp01.x"
#define	MESH6   L"Media\\Objects\\happy.x"
#define	MESH7   L"Media\\Objects\\dragon.x"
#define	MESH8   L"Media\\Objects\\bunny.x"
#define	MESH9   L"Media\\Objects\\skullocc.x"
#define	TEX0   L"Media\\Maps\\white.png"
#define	TEX1   L"Media\\Maps\\pixel-grid-gy.png"
#define	TEX2   L"Media\\Maps\\fire.jpg"
#define	ROOM_TEXTURE   L"Media\\Maps\\pixel-grid-b.png"
#define	CUBEMAP_SIZE   128
	size of the cube map taken from the reference point of the object
#define	M   10
	Number of samples when precomputing geometric factors.
Functions
float	eval (float cos_theta, float dw)
	Calculates the reflectivity integral for a given texel.
float	evaluate (float dx, float dy)
Variables
int	LR_CUBEMAP_SIZE = 2
	size of the cube map for diffuse/glossy reflections
Parameters	pp
	HELPER CLASS TO MANAGE VARIOUS PARAMETERS.
bool	bPreproc = false

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Define Documentation

#define CUBEMAP_SIZE   128

size of the cube map taken from the reference point of the object

#define M   10

Number of samples when precomputing geometric factors.

#define MESH0   L"Media\\Objects\\room.x"

#define MESH1   L"Media\\Objects\\sphere.x"

#define MESH2   L"Media\\Objects\\column.x"

#define MESH3   L"Media\\Objects\\teapot.x"

#define MESH4   L"Media\\Objects\\ring.x"

#define MESH5   L"Media\\Objects\\lamp01.x"

#define MESH6   L"Media\\Objects\\happy.x"

#define MESH7   L"Media\\Objects\\dragon.x"

#define MESH8   L"Media\\Objects\\bunny.x"

#define MESH9   L"Media\\Objects\\skullocc.x"

#define ROOM_TEXTURE   L"Media\\Maps\\pixel-grid-b.png"

#define TEX0   L"Media\\Maps\\white.png"

#define TEX1   L"Media\\Maps\\pixel-grid-gy.png"

#define TEX2   L"Media\\Maps\\fire.jpg"

---

Function Documentation

float eval (  float  cos_theta, float  dw )

Calculates the reflectivity integral for a given texel. The angle between the surface normal and texel center is described by cos_theta and the solid angle occupied by the texel is denoted by dw. Instead of evaluating the reflectivity integral with only one sample belongig to the texel center (that would give us a result of cos_theta x dw), we use 2 M x 2 M x M regulary spaced samples, and discard those that lie outside the unit hemisphere. The remaining samples are regulary distributed over the hemisphere. For each sample, we check if it lies inside the cone of the specified solid angle. If yes, its contribution is considered.

float evaluate (  float  dx, float  dy )

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Variable Documentation

bool bPreproc = false

int LR_CUBEMAP_SIZE = 2

size of the cube map for diffuse/glossy reflections

Parameters pp

HELPER CLASS TO MANAGE VARIOUS PARAMETERS.

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