如何使用opengl绘制cuda中的点数 [英] How can I plot the points in cuda using opengl

问题描述

我有一个带点数的csv文件，我需要在cuda中使用opengl在多维数据集中获取值和ploat。我已经绘制了立方体中的点。但我不知道它如何在cuda实施。我需要帮助。



我尝试过：



#include < cstdlib>

#include< ctime>

#include< cmath>

#include< fstream>

#include< iostream>

#include< iomanip>

#include< GL / glut.h>

#include< string>

#include< sstream>

#include< vector>

#include< string>

使用命名空间std;



void display（）;

double rotate_y = 0;

double rotate_x = 0;

GLfloat xRotated，yRotated，zRotated;

double zoom = 0.5;

< br $>




无效显示（）{



glClear（GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT） ;

glLoadIdentity（）;

glScalef（缩放，缩放，1.0f）;

glTranslatef（0.0,0.0，-10.5）;

glRotatef（xRotated，1.0,0.0,0.0）;

glRotatef（yRotated，0.0,1.0,0.0）;

glRotatef（zRotated，0.0 ，0.0,1.0）;







glColor3f（1,1,1）;

glBegin（GL_LINE_LOOP）;

glVertex3f（0.1，-0.01，-0.01）;

glVertex3f（0.1,0.1，-0.01）;

glVertex3f（-0.01,0.1，-0.01）;

glVertex3f（-0.01，-0.01，-0.01）;

glEnd（）;

glBegin（GL_LINE_LOOP）;

glVertex3f（0.1，-0.01,0.1）;

glVertex3f（0.1,0.1,0.1）;

glVertex3f（-0.01,0.1,0.1）;

glVertex3f（-0.01，-0.01,0.1）;

glEnd（）;

glBegin（GL_LINE_LOOP）;

glVertex3f（0.1，-0.01，-0.01）;

glVertex3f （0.1,0.1，-0.01）;

glVertex3f（0.1,0.1,0.1）;

glVertex3f（0.1，-0.01,0.1）;

glEnd（）;

glBegin（GL_LINE_LOOP）;

glVertex3f（-0.01，-0.01,0.1）;

glVertex3f（-0.01 ，0.1,0.1）;

glVertex3f（-0.01,0.1，-0.01）;

glVertex3f（-0.01，-0.01，-0.01）;

glEnd（）;





浮动f1，f2，f3;



FILE * fp;

fp = fopen（golgi.csv，r）;



while（fscanf （fp，％g，％g，％g \ n，& f1，& f2，& f3）== 3）

{

glPo intSize（7）;

glColor3f（0,0,1）;

glBegin（GL_POINTS）;

glVertex3f（f1，f2，f3 ）;

glEnd（）;

}

fclose（fp）;

glFlush（）;

glutSwapBuffers（）;



}







无效动画（无效）

{



yRotated + = 0.70;

xRotated + = 0.03;

display（）;

}





void reshape（int x，int y）

{

if（y == 0 || x == 0）返回;

glMatrixMode（GL_PROJECTION）;

glLoadIdentity（）;

gluPerspective（3.0，（GLdouble）x /（GLdouble）y，0.8,50.0）;

glMatrixMode（GL_MODELVIEW ）;

glViewport（0,0，x，y）;



}





void mouse（int button，int state， int x，int y）

{

//右箭头 - 将旋转增加5度

if（state == GLUT_DOWN&& ; button == GLUT_RIGHT_BUTTON）

{

zoom - = 2.5;



}

else if（state == GLUT_DOWN&& button == GLUT_LEFT_BUTTON）

{

zoom + = 2.5;

}



glutPostRedisplay（）;



}





int main（int argc，char ** argv）

{

glutInit（& argc，argv）;

glutInitDisplayMode（GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH）;

glutInitWindowSize（1500,1000）;

glutCreateWindow（Awesome Cube）;

glEnable（GL_DEPTH_TEST）;

glutDisplayFunc（显示）;

glutReshapeFunc（重塑）;

glutIdleFunc（动画）;

glutMouseFunc（鼠标）;

glutMainLoop （）;

返回0;



}

解决方案

回答这个问题将远远超出快速回答的意图。



您可以查看与CUDA3D游戏引擎编程的OpenGL互操作性 [ ^ ]：

Quote：

在本文中，我将讨论如何在CUDA内核中使用OpenGL纹理和缓冲区。

i have a csv file with points, and i need to take that values and ploat within a cube using opengl in cuda . i already plot the points in the cube. but i dont no how it implement in cuda. i need help.

What I have tried:

# include <cstdlib>
# include <ctime>
# include <cmath>
# include <fstream>
# include <iostream>
# include <iomanip>
# include <GL/glut.h>
# include <string>
# include <sstream>
# include <vector>
# include <string>
using namespace std;

void display();
double rotate_y=0;
double rotate_x=0;
GLfloat xRotated, yRotated, zRotated;
double zoom=0.5;



void display(){

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glScalef(zoom, zoom, 1.0f);
glTranslatef(0.0,0.0,-10.5);
glRotatef(xRotated,1.0,0.0,0.0);
glRotatef(yRotated,0.0,1.0,0.0);
glRotatef(zRotated,0.0,0.0,1.0);



glColor3f( 1, 1, 1 );
glBegin(GL_LINE_LOOP);
glVertex3f( 0.1, -0.01, -0.01 );
glVertex3f( 0.1, 0.1, -0.01 );
glVertex3f( -0.01, 0.1, -0.01 );
glVertex3f( -0.01, -0.01, -0.01 );
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f( 0.1, -0.01, 0.1 );
glVertex3f( 0.1, 0.1, 0.1 );
glVertex3f( -0.01, 0.1, 0.1 );
glVertex3f( -0.01, -0.01, 0.1 );
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f( 0.1, -0.01, -0.01 );
glVertex3f( 0.1, 0.1, -0.01 );
glVertex3f( 0.1, 0.1, 0.1 );
glVertex3f( 0.1, -0.01, 0.1 );
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f( -0.01, -0.01, 0.1 );
glVertex3f( -0.01, 0.1, 0.1 );
glVertex3f( -0.01, 0.1, -0.01 );
glVertex3f( -0.01, -0.01, -0.01 );
glEnd();


float f1, f2, f3;

FILE *fp;
fp = fopen("golgi.csv", "r");

while (fscanf(fp, "%g,%g,%g\n", &f1, &f2, &f3) == 3)
{
glPointSize(7);
glColor3f( 0, 0, 1 );
glBegin(GL_POINTS);
glVertex3f( f1, f2, f3 );
glEnd();
}
fclose(fp);
glFlush();
glutSwapBuffers();

}



void animation(void)
{

yRotated += 0.70;
xRotated += 0.03;
display();
}


void reshape(int x, int y)
{
if (y == 0 || x == 0) return;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(3.0,(GLdouble)x/(GLdouble)y,0.8,50.0);
glMatrixMode(GL_MODELVIEW);
glViewport(0,0,x,y);

}


void mouse( int button, int state, int x, int y)
{
//Right arrow - increase rotation by 5 degree
if(state == GLUT_DOWN && button == GLUT_RIGHT_BUTTON)
{
zoom -= 2.5;

}
else if(state == GLUT_DOWN && button == GLUT_LEFT_BUTTON)
{
zoom += 2.5;
}

glutPostRedisplay();

}


int main(int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(1500 , 1000);
glutCreateWindow("Awesome Cube");
glEnable(GL_DEPTH_TEST);
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutIdleFunc(animation);
glutMouseFunc(mouse);
glutMainLoop();
return 0;

}

解决方案

Answering this would be far beyond the intention of "Quick Answer".

You may have a look at OpenGL Interoperability with CUDA3D Game Engine Programming[^]:

Quote:

In this article I will discuss how you can use OpenGL textures and buffers in a CUDA kernel.

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