utility.hpp File Reference

#include <fstream>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <glm/gtx/transform.hpp>
#include <assimp.hpp>
#include <aiScene.h>
#include <aiPostProcess.h>
#include "common.hpp"

Go to the source code of this file.

Functions
bool	initFbo (GLuint &fboId, GLuint &imgId, int width, int height)
	Initializes the FBO, which is used as PickBuffer (render objectIds for object picking). More...
int *	readPixels (unsigned int xFrom, unsigned int yFrom, unsigned int width, unsigned int height, GLuint fboId, GLuint imgId)
	Reads pixels from the GPU in a rectangular form. More...

Function Documentation

bool initFbo	(	GLuint &	fboId,
		GLuint &	imgId,
		int	width,
		int	height
	)

Initializes the FBO, which is used as PickBuffer (render objectIds for object picking).

Parameters

fboId	is used to store the handle the FBO has got
imgId	is used to store the texture handle
width	determines the width of the FBO
height	determines the height of the FBO

Returns

if the FBO could be created successful

int* readPixels	(	unsigned int	xFrom,
		unsigned int	yFrom,
		unsigned int	width,
		unsigned int	height,
		GLuint	fboId,
		GLuint	imgId
	)

Reads pixels from the GPU in a rectangular form.

Parameters

xFrom	Left start value of the rectangle
yFrom	Bottom start value of the rectangle
width	Width of the rectangle
height	Height of the rectangle
fboId	is used to identify the FBO
imgId	is used to identify the texture

Returns

the read values as integer array