C++ 为什么你不在这里工作?
这是密码。输出是一个灰色的正方形-所有的时间,无论输入是什么,它显然是错误的。我的目标是能够将所有像素存储在某个地方并显示出来,这样我就可以继续使用一个简单的光线跟踪器,而我似乎无法解决这个问题C++ 为什么你不在这里工作?,c++,opengl,pixels,trace,gldrawpixels,C++,Opengl,Pixels,Trace,Gldrawpixels,这是密码。输出是一个灰色的正方形-所有的时间,无论输入是什么,它显然是错误的。我的目标是能够将所有像素存储在某个地方并显示出来,这样我就可以继续使用一个简单的光线跟踪器,而我似乎无法解决这个问题 #include <stdlib.h> #include <GL/glut.h > using namespace std; struct RGBType { float r; float g; float b; //float a; };
#include <stdlib.h>
#include <GL/glut.h >
using namespace std;
struct RGBType {
float r;
float g;
float b;
//float a;
};
void display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
RGBType *pixels = new RGBType[250*250];
for (int x = 0; x < 250; x++) {
for (int y = 0; y < 250; y++) {
pixels->r = 0;
pixels->g = 1;
pixels->b = 1;
//pixels->a = 200;
}
}
glTexSubImage2D(GL_TEXTURE_2D,0,0,0,250,250,GL_RGB,GL_UNSIGNED_BYTE,pixels);
//glColor3f(1.0,1.0,1.0);
glBegin(GL_POLYGON);
glVertex3f(0.0, 0.0, 0.0);
glVertex3f(1.0, 0.0, 0.0);
glVertex3f(1.0, 1.0, 0.0);
glVertex3f(0.0, 1.0, 0.0);
glEnd();
glutSwapBuffers();
}
void init(void)
{
//select clearing (background) color
glClearColor(0.0, 0.0, 0.0, 0.0);
//initialize viewing values
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
}
int main(int argc, char** argv)
{
//Initialise GLUT with command-line parameters.
glutInit(&argc, argv);
//Set Display Mode
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
//Set the window size
glutInitWindowSize(250,250);
//Set the window position
glutInitWindowPosition(100,100);
//Create the window
glutCreateWindow("Ray Tracer");
//Call init (initialise GLUT
init();
//Call "display" function
glutDisplayFunc(display);
//Enter the GLUT event loop
glutMainLoop();
return 0;
}
#包括
#包括
使用名称空间std;
结构RGBType{
浮子r;
浮球g;
浮球b;
//浮动a;
};
作废显示(作废)
{
glClear(GL_颜色_缓冲_位| GL_深度_缓冲_位);
RGB类型*像素=新RGB类型[250*250];
对于(int x=0;x<250;x++){
对于(int y=0;y<250;y++){
像素->r=0;
像素->g=1;
像素->b=1;
//像素->a=200;
}
}
glTexSubImage2D(GL_纹理_2D,0,0,025050,GL_RGB,GL_无符号_字节,像素);
//GL3F(1.0,1.0,1.0);
glBegin(GL_多边形);
glVertex3f(0.0,0.0,0.0);
glVertex3f(1.0,0.0,0.0);
glVertex3f(1.0,1.0,0.0);
glVertex3f(0.0,1.0,0.0);
格伦德();
glutSwapBuffers();
}
void init(void)
{
//选择清除(背景)颜色
glClearColor(0.0,0.0,0.0,0.0);
//初始化查看值
glMatrixMode(GL_投影);
glLoadIdentity();
格洛托(0.0,1.0,0.0,1.0,-1.0,1.0);
}
int main(int argc,字符**argv)
{
//使用命令行参数初始化GLUT。
glutInit(&argc,argv);
//设置显示模式
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_深度);
//设置窗口大小
glutInitWindowSize(250250);
//设置窗口位置
位置(100100);
//创建窗口
创建窗口(“光线跟踪器”);
//调用init(初始化GLUT
init();
//调用“显示”功能
glutDisplayFunc(显示器);
//进入GLUT事件循环
glutMainLoop();
返回0;
}
您告诉OpenGL将像素
解释为无符号字符
的数组,按组读取它们,并将每四个像素的前三个字节用作RGB通道
不要对OpenGL撒谎。最终很少对你有用
尝试使用GL\u FLOAT
然后首先创建一个实际的纹理对象
并绑定该纹理对象,然后再尝试向其上载数据
并为多边形指定一些纹理坐标
并在绘制多边形之前启用纹理
大概是这样的:
#include <GL/glut.h>
struct RGBType
{
float r;
float g;
float b;
};
GLuint tex = 0;
void init()
{
RGBType pixels[ 250*250 ];
RGBType* temp = pixels;
for (int x = 0; x < 250; x++)
{
for (int y = 0; y < 250; y++)
{
temp->r = 0;
temp->g = 1;
temp->b = 1;
temp++;
}
}
glGenTextures( 1, &tex );
glBindTexture( GL_TEXTURE_2D, tex );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, 250, 250, 0, GL_RGB, GL_FLOAT, NULL );
glTexSubImage2D(GL_TEXTURE_2D,0,0,0,250,250,GL_RGB,GL_FLOAT,pixels);
}
void display(void)
{
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-2, 2, -2, 2, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glColor3ub( 255, 255, 255 );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, tex );
glBegin(GL_QUADS);
glTexCoord2i( 0, 0 );
glVertex2i( 0, 0 );
glTexCoord2i( 1, 0 );
glVertex2i( 1, 0 );
glTexCoord2i( 1, 1 );
glVertex2i( 1, 1 );
glTexCoord2i( 0, 1 );
glVertex2i( 0, 1 );
glEnd();
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowSize(250,250);
glutCreateWindow("Ray Tracer");
init();
glutDisplayFunc(display);
glutMainLoop();
return 0;
}
#包括
结构RGBType
{
浮子r;
浮球g;
浮球b;
};
GLuint-tex=0;
void init()
{
RGB型像素[250*250];
RGB类型*温度=像素;
对于(int x=0;x<250;x++)
{
对于(int y=0;y<250;y++)
{
温度->r=0;
温度->g=1;
温度->b=1;
temp++;
}
}
glGenTextures(1和tex);
glBindTexture(GL_TEXTURE_2D,tex);
glTexParameteri(GL_纹理2D、GL_纹理MAG_过滤器、GL_线性);
glTexParameteri(GL_纹理2D、GL_纹理最小过滤器、GL_线性);
GLTEXAGE2D(GL_纹理_2D,0,GL_RGB,250,250,0,GL_RGB,GL_浮点,NULL);
glTexSubImage2D(GL_纹理_2D,0,0,025025050,GL_RGB,GL_浮点,像素);
}
作废显示(作废)
{
glClearColor(0,0,0,1);
glClear(GLU颜色缓冲位);
glMatrixMode(GL_投影);
glLoadIdentity();
格洛托(-2,2,-2,2,-1,1);
glMatrixMode(GLU模型视图);
glLoadIdentity();
glColor3ub(255、255、255);
glEnable(GL_纹理_2D);
glBindTexture(GL_TEXTURE_2D,tex);
glBegin(GL_QUADS);
glTexCoord2i(0,0);
glVertex2i(0,0);
glTexCoord2i(1,0);
glVertex2i(1,0);
glTexCoord2i(1,1);
glVertex2i(1,1);
glTexCoord2i(0,1);
glVertex2i(0,1);
格伦德();
glutSwapBuffers();
}
int main(int argc,字符**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowSize(250250);
创建窗口(“光线跟踪器”);
init();
glutDisplayFunc(显示器);
glutMainLoop();
返回0;
}
您告诉OpenGL将像素
解释为无符号字符
的数组,按组读取它们,并将每四个像素的前三个字节用作RGB通道
不要对OpenGL撒谎。最终很少对你有用
尝试使用GL\u FLOAT
然后首先创建一个实际的纹理对象
并绑定该纹理对象,然后再尝试向其上载数据
并为多边形指定一些纹理坐标
并在绘制多边形之前启用纹理
大概是这样的:
#include <GL/glut.h>
struct RGBType
{
float r;
float g;
float b;
};
GLuint tex = 0;
void init()
{
RGBType pixels[ 250*250 ];
RGBType* temp = pixels;
for (int x = 0; x < 250; x++)
{
for (int y = 0; y < 250; y++)
{
temp->r = 0;
temp->g = 1;
temp->b = 1;
temp++;
}
}
glGenTextures( 1, &tex );
glBindTexture( GL_TEXTURE_2D, tex );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );
glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGB, 250, 250, 0, GL_RGB, GL_FLOAT, NULL );
glTexSubImage2D(GL_TEXTURE_2D,0,0,0,250,250,GL_RGB,GL_FLOAT,pixels);
}
void display(void)
{
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-2, 2, -2, 2, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glColor3ub( 255, 255, 255 );
glEnable( GL_TEXTURE_2D );
glBindTexture( GL_TEXTURE_2D, tex );
glBegin(GL_QUADS);
glTexCoord2i( 0, 0 );
glVertex2i( 0, 0 );
glTexCoord2i( 1, 0 );
glVertex2i( 1, 0 );
glTexCoord2i( 1, 1 );
glVertex2i( 1, 1 );
glTexCoord2i( 0, 1 );
glVertex2i( 0, 1 );
glEnd();
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowSize(250,250);
glutCreateWindow("Ray Tracer");
init();
glutDisplayFunc(display);
glutMainLoop();
return 0;
}
#包括
结构RGBType
{
浮子r;
浮球g;
浮球b;
};
GLuint-tex=0;
void init()
{
RGB型像素[250*250];
RGB类型*温度=像素;
对于(int x=0;x<250;x++)
{
对于(int y=0;y<250;y++)
{
温度->r=0;
温度->g=1;
温度->b=1;
temp++;
}
}
glGenTextures(1和tex);
glBindTexture(GL_TEXTURE_2D,tex);
glTexParameteri(GL_纹理2D、GL_纹理MAG_过滤器、GL_线性);
glTexParameteri(GL_纹理2D、GL_纹理最小过滤器、GL_线性);
GLTEXAGE2D(GL_纹理_2D,0,GL_RGB,250,250,0,GL_RGB,GL_浮点,NULL);
glTexSubImage2D(GL_纹理_2D,0,0,025025050,GL_RGB,GL_浮点,像素);
}
作废显示(作废)
{
glClearColor(0,0,0,1);
glClear(GLU颜色缓冲位);
glMatrixMode(GL_投影);
glLoadIdentity();
格洛托(-2,2,-2,2,-1,1);
glMatrixMode(GLU模型视图);
glLoadIdentity();
glColor3ub(255、255、255);
glEnable(GL_纹理_2D);
glBindTexture(GL_TEXTURE_2D,tex);
glBegin(GL_QUADS);
glTexCoord2i(0,0);
glVertex2i(0,0);
glTexCoord2i(1,0);
glVertex2i(1,0);
glTexCoord2i(1,1);
glVertex2i(1,1);
glTexCoord2i(0,1);
glVertex2i(0,1);
格伦德();
glutSwapBuffers();
}
内部主(内部)