首先从ttf中读取字体,根据字体生成SDL_surface->opengl纹理.
basedef.h:
#ifndef BASEDEF_H
#define BASEDEF_H
//先区分操作系统
#undef WIN32
#undef LINUX
#ifdef _MSC_VER //desktop or mobile win32 environment
#define WIN32
#else
#define LINUX //Linux environment
#endif
#ifdef WIN32
#include "windows.h"
#include "direct.h" //在win32和linux下所用的头是不同的
#include <time.h>
#else
#include <stdio.h>
#include <unistd.h>
#include <sys/time.h>
#endif
#include <SDL.h> //加入SDL的内容
#include <SDL_image.h>
#include <SDL_opengl.h>
//#include <GL/glext.h>
#define HHM_PI 3.14159
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
//定义行末识别符 win32与linux不同
#ifdef WIN32
#define LINEEND '/0'
#else
#define LINEEND '/r'
#endif
#ifdef WIN32
#define PATHDIV '//'
#else
#define PATHDIV '/'
#endif
#define Min(x,y) ((x < y) ? x : y)
#define Max(x,y) ((x > y) ? x : y)
#define GLMAXTEXSIZE 1024 //根据情况来调整 与游戏无关
//0x0001 0x0002 预留出来 给逻辑控制 与具体游戏无关
#define TODOMULTIPASS 0x0004 //使用MultiPass来实现特效
#define TODOMULTITEXTRUE 0x0008 //使用MultiTexture来实现特效
#define SHOWGRID 0x0010 //显示网格
#define OPENLIGHT 0x0020 //开灯
#define ANTIALIASE 0x0040 //反走样
#define MIRRORCCW 0x0080 //将正面取反（如在绘制镜面时）
#define CARDANTIALIASE 0x0100 //牌反走样
#define USEMIPMAP 0x0200 //运用mipmap
#define USELINEARFILTER 0x0400 //运用线性过滤
#endif
convert-charset..h
#ifndef __header_convert_charset__
#define __header_convert_charset__
#define _UNICODE
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
//先区分操作系统
#undef WIN32
#undef LINUX
#ifdef _MSC_VER //desktop or mobile win32 environment
#define WIN32
#else
#define LINUX //Linux environment
#endif
#ifdef LINUX
#define HAVE_ICONV
#endif
#ifdef HAVE_ICONV
#include <iconv.h>
#endif
#ifdef _WIN32
#include <windows.h>
//#include <WINNLS.H>
#endif
#ifdef __cplusplus
extern "C" {
#endif
bool GB2312_AnsiToUnicode(char *lpszOut, const char* lpszIn,
const char* lpszCurCode = NULL,
const char* lpszOutCode = NULL);
int GB2312_AnsiToUnicode_Size(const char* lpszIn);
#ifdef __cplusplus
}
#endif
#endif // End of __header_convert_charset__
convert-charset.cpp:
#include "convert-charset.h"
//#include <WINNLS.H>
bool GB2312_AnsiToUnicode(char *lpszOut, const char* lpszIn,
const char* lpszCurCode/* = NULL*/,
const char* lpszOutCode/* = NULL*/)
{
#ifdef WIN32 // _WIN32
//Do nothing
int lpszOut_size=GB2312_AnsiToUnicode_Size(lpszIn);
//这函数与操作系统相关，XP下用CP_THREAD_ACP，win2000下用CP_ACP
MultiByteToWideChar(CP_THREAD_ACP, 0,lpszIn,strlen(lpszIn)+1,(unsigned short*)lpszOut,lpszOut_size);
#else // _WIN32
#ifdef HAVE_ICONV
/* Use iconv to convert the message into utf-16.
* "char" and "" are aliases for the local 8-bit encoding */
iconv_t cd;
// ICONV_CONST char *from_str = message;
char *from_str = (char*)lpszIn;
char *to_str = lpszOut;
size_t from_sz = strlen(lpszIn) + 1;
// size_t to_sz = from_sz*4;
size_t to_sz = GB2312_AnsiToUnicode_Size(lpszIn);
size_t res;
int i;
char lpszCodeName_From[30], lpszCodeName_To[30];
if (lpszCurCode)
strcpy(lpszCodeName_From, lpszCurCode);
else
strcpy(lpszCodeName_From, "gb2312");
if (lpszOutCode)
strcpy(lpszCodeName_To, lpszOutCode);
else
strcpy(lpszCodeName_To, "UTF-16");
#ifdef _DEBUG
fprintf(stdout, "Convert '%s' from %s to %s/n", lpszIn, lpszCodeName_From, lpszCodeName_To);
#endif
// if ((cd = iconv_open("unicode", "gb2312")) == (iconv_t)-1) {
if ((cd = iconv_open(lpszCodeName_To, lpszCodeName_From)) == (iconv_t)-1) {
perror("Couldn't open iconv");
return false;
}
res = iconv(cd, &from_str, &from_sz, &to_str, &to_sz);
if (res == -1) {
perror("Couldn't use iconv");
return false;
}
iconv_close(cd);
#endif
#ifdef _DEBUG
fprintf(stdout, "Convert result: '%s'/n", lpszOut);
#endif
#endif // End of _WIN32
return true;
}
int GB2312_AnsiToUnicode_Size(const char* lpszIn)
{
int iCounter = 0;
for (int index = 0; lpszIn[index]; index++) {
if( (unsigned char)lpszIn[index] > 127 )
{
index++;
}
else
{
;
}
iCounter+=2;
}
iCounter += 4;
#ifdef _DEBUG
fprintf(stdout, "GB2312_AnsiToUnicode_Size() return %d/n", iCounter);
#endif
return iCounter;
// return 48;
}
//字幕纹理对象信息
struct TexInfo
{
GLuint TexId; //字幕纹理号
int w;
int h;
};
font.h内容:
#include <string>
#include "RendText.h"
class CFont :public CRendText
{
public:
CFont();
/* *style: -b(黑体)-i(斜体)-u(下划线)
-s(以指定颜色做文字背景)-S(以图片做文字背景)
*finename: 字库名字不包扩路径
size: 字体大小 */
void T_SetFontStyle(char *style,char *filename,int size);
//文字颜色
bool T_SetFontColor(int r,int g,int b);
//文字背景色
bool T_SetFontBgColor(int r,int g,int b);
//文字坐标和内容
bool T_TextOut(int x,int y,char *message);
SDL_Surface* GL_GenImage(char *message);
/*
如下函数是继承来的 可直接引用
const char* get_FontPath() const; //获得字库的路径
int get_RenderStyle() const; //获得文字的风格信息
int set_RenderStyle(const int newStyle); //设置文字的风格
int get_FontSize() const; //获得文字大小
SDL_Color get_ForeColor() const; //获得文字的颜色
SDL_Color set_ForeColor(const SDL_Color newColor);//设置文字的颜色
SDL_Color get_BackColor() const; //获得文字的背景色
SDL_Color set_BackColor(const SDL_Color newColor);//设置文字的背景色
const TTF_Font * get_Font() const; //获得文字的TTF结构 有字库名和字体大小
// Added by zhanzb, 20041222
const bool get_ReleaseFontAfterUsed() const;
bool set_ReleaseFontAfterUsed(const bool bReleaseFontAfterUsed);
*/
bool initsuccessflag;
virtual ~CFont();
protected:
void draw(SDL_Surface *image, int x, int y);
char name[255];
SDL_Color textcolor;
SDL_Color textbg;
int fontsize;
int rendersolid;
int rendertype;
};
font.cpp:
#include "basedef.h"
#include "Font.h"
#ifdef WIN32
#include "direct.h" //在win32和linux下所用的头是不同的 为了getcwd
#else
#include <unistd.h>
#endif
#define ZKPATH "zk"
CFont::CFont()
{
textcolor.r=0xff;
textcolor.g=0xff;
textcolor.b=0xff;
textbg.r=0;
textbg.g=0;
textbg.b=0;
initsuccessflag=false;
}
void CFont::T_SetFontStyle(char *style,char *filename,int size)
{
int i;
rendertype=0;
for ( i=0; style[i]!='/0';i++ )
{
if(style[i]=='-')
{
i++;
if (style[i] == 's' )
{
rendersolid = 1;
}
if(style[i] == 'S')
{
rendersolid =0;
}
if ( style[i] == 'b' )
{
rendertype |= TTF_STYLE_BOLD;
}
if ( style[i] == 'i' )
{
rendertype |= TTF_STYLE_ITALIC;
}
if ( style[i] == 'u')
{
rendertype |= TTF_STYLE_UNDERLINE;
}
}
}
fontsize=size;
name[0]='/0';
#ifdef LINUXSO
char filepname[255];
getcwd( filepname, 255 ); //获得工作目录
sprintf(filepname, "%s%c", filepname, PATHDIV);
sprintf(filepname, "%s%s", filepname, "res"); //res/SuperPokerE/
sprintf(filepname, "%s%c", filepname, PATHDIV);
sprintf(filepname, "%s%s", filepname, "SuperPokerE");
sprintf(filepname, "%s%c", filepname, PATHDIV);
strcpy(name,filepname);
#endif
strcat(name,ZKPATH);
sprintf(name, "%s%c", name, PATHDIV);
strcat(name,filename);
initsuccessflag=true;
}
bool CFont::T_SetFontColor(int r,int g,int b)
{
textcolor.r =r;
textcolor.g =g;
textcolor.b =b;
set_ForeColor(textcolor);
return true;
}
bool CFont::T_SetFontBgColor(int r,int g,int b)
{
textbg.r =r;
textbg.g =g;
textbg.b =b;
set_BackColor(textbg);
return true;
}
bool CFont::T_TextOut(int x,int y,char *message)
{
if (message[0]=='/0')
return false;
SDL_Surface *image
=CRendText::RendText(name,message,rendertype,fontsize,rendersolid,textcolor,textbg);
name[0]='/0';
draw(image,x,y);
SDL_FreeSurface(image);
return true;
}
SDL_Surface* CFont::GL_GenImage(char *message)
{
if (message[0]=='/0')
return NULL;
SDL_Surface *image
=CRendText::RendText(name,message,rendertype,fontsize,rendersolid,textcolor,textbg);
name[0]='/0';
return image;
}
void CFont::draw(SDL_Surface *image, int x, int y)
{
SDL_Rect dest;
dest.x = x;
dest.y = y;
if(image->w>800)
dest.w = 800;
else
dest.w=image->w;
if(image->h>600)
dest.h=600;
else
dest.h = image->h;
SDL_Surface* mainSurface = SDL_GetVideoSurface();
SDL_BlitSurface(image, NULL, mainSurface, &dest);
//SDL_UpdateRect(mainSurface, 0, 0, 0, 0);
}
CFont::~CFont()
{
}
renderText.h
#ifndef __header_RendText__
#define __header_RendText__
#define _UNICODE
#include <stdlib.h>
#include <stdio.h>
#include <string>
#include "SDL.h"
#include "SDL_ttf.h"
#include <stddef.h>
#include "convert-charset.h"
class CRendText
{
public:
CRendText();
~CRendText();
SDL_Surface *RendText(
const char *lpszFontFileName,
const char *lpszText,
const int renderstyle,
const int fontSize,
const int rendersolid,
const SDL_Color fgcol,
const SDL_Color bgcol);
void ReleaseFont();
const char* get_FontPath() const;
int get_RenderStyle() const;
int set_RenderStyle(const int newStyle);
int get_FontSize() const;
SDL_Color get_ForeColor() const;
SDL_Color set_ForeColor(const SDL_Color newColor);
SDL_Color get_BackColor() const;
SDL_Color set_BackColor(const SDL_Color newColor);
const TTF_Font * get_Font() const;
// Added by zhanzb, 20041222
const bool get_ReleaseFontAfterUsed() const;
bool set_ReleaseFontAfterUsed(const bool bReleaseFontAfterUsed);
private:
void Init();
char m_lpszFontPath[260];
int m_RenderStyle;
int m_fontSize;
int m_rendersolid;
SDL_Color m_fgcol,m_bgcol;
TTF_Font *m_Font;
// Added by zhanzb, 20041222
bool m_bReleaseFontAfterUsed;
};
#endif // End of __header_RendText__
renderText.cpp:
#define _UNICODE
#include "RendText.h"
CRendText::CRendText()
{
if ( TTF_Init() < 0 ) {
fprintf(stderr, "Couldn't initialize TTF: %s/n",SDL_GetError());
//exit(2);
}
Init();
}
void CRendText::Init()
{
m_lpszFontPath[0] = 0;
m_RenderStyle = TTF_STYLE_NORMAL;
m_fontSize = 12;
m_rendersolid=0;
m_Font = NULL;
m_bReleaseFontAfterUsed = false;
}
CRendText::~CRendText()
{
ReleaseFont();
}
void CRendText::ReleaseFont()
{
#ifdef _DEBUG
fprintf(stdout, "Release font '%s', m_Font(%d)/n", m_lpszFontPath, (long)m_Font);
#endif
if (m_Font) TTF_CloseFont(m_Font);
Init();
}
SDL_Surface *CRendText::RendText(
const char *lpszFontFileName,
const char *lpszText,
const int renderstyle,
const int fontSize,
const int rendersolid,
const SDL_Color fgcol,
const SDL_Color bgcol)
{
#ifdef _DEBUG
fprintf(stdout, "/n/nFontFileName: %s, %s/n", lpszFontFileName, m_lpszFontPath);
fprintf(stdout, "renderstyle: %d, %d/n", renderstyle, m_RenderStyle);
fprintf(stdout, "fontSize: %d, %d/n", fontSize, m_fontSize);
#endif
SDL_Surface *text = NULL;
if (
(lpszFontFileName[0] != 0 && // 使用新字型
strcmp(lpszFontFileName, m_lpszFontPath) != 0) ||
m_fontSize != fontSize) // 或者字体大小改变了
{
TTF_Font *newFont = NULL;
newFont = TTF_OpenFont(lpszFontFileName, fontSize);
if ( NULL == m_Font && NULL == newFont )
{
fprintf(stderr, "huang Couldn't load %d pt font from %s: %s/n", fontSize, lpszFontFileName, SDL_GetError());
return NULL;
}
else if (NULL != m_Font && NULL == newFont )
{
fprintf(stderr, "Couldn't load %d pt font from %s: %s, use old font/n", fontSize, lpszFontFileName, SDL_GetError());
}
else if (NULL != newFont )
{
#ifdef _DEBUG
fprintf(stdout, "Load %d pt font from '%s' succeed!/n", fontSize, lpszFontFileName);
#endif
ReleaseFont();
strcpy(m_lpszFontPath, lpszFontFileName);
m_Font = newFont;
m_fontSize = fontSize;
}
}
else
{
if(!m_Font) return NULL;
#ifdef _DEBUG
fprintf(stdout, "Reuse old font: %d pt font from '%s' succeed!/n", fontSize, lpszFontFileName);
#endif
}
m_RenderStyle = renderstyle;
TTF_SetFontStyle(m_Font, renderstyle);
unsigned int iCount = GB2312_AnsiToUnicode_Size(lpszText);
if (0 == iCount)
return NULL;
// else
// iCount += 2;
char *unicode_text = new char[iCount];
if( !GB2312_AnsiToUnicode(unicode_text, lpszText, "GB2312", "UTF-16"))
{
delete unicode_text;
return NULL;
}
#ifdef _DEBUG
fprintf(stdout, "fgcol: %d,%d,%d/n", fgcol.r, fgcol.g, fgcol.b);
fprintf(stdout, "bgcol: %d,%d,%d/n", bgcol.r, bgcol.g, bgcol.b);
#endif
if (memcmp(&m_fgcol, &fgcol, sizeof(m_fgcol)) != 0)
memcpy(&m_fgcol, &fgcol, sizeof(m_fgcol));
if (memcmp(&m_bgcol, &bgcol, sizeof(m_fgcol)) != 0)
memcpy(&m_bgcol, &bgcol, sizeof(m_fgcol));
#ifdef _DEBUG
fprintf(stdout, "m_fgcol: %d,%d,%d/n", m_fgcol.r, m_fgcol.g, m_fgcol.b);
fprintf(stdout, "m_bgcol: %d,%d,%d/n", m_bgcol.r, m_bgcol.g, m_bgcol.b);
fprintf(stdout, "rendersolid: %d/n",rendersolid);
#endif
m_rendersolid=rendersolid;
if(m_rendersolid==0)
text = TTF_RenderUNICODE_Solid(m_Font, (Uint16*)unicode_text, m_fgcol);
else
text = TTF_RenderUNICODE_Shaded(m_Font, (Uint16*)unicode_text, m_fgcol, m_bgcol);
delete unicode_text;
if ( text == NULL ) {
fprintf(stderr, "Couldn't render text: %s/n", SDL_GetError());
TTF_CloseFont(m_Font);
return NULL;
}
#ifdef _DEBUG
else
SDL_SaveBMP( text, "hello.bmp" );
#endif
// TTF_CloseFont(m_Font);
if (m_bReleaseFontAfterUsed)
ReleaseFont();
return text;
};
const char* CRendText::get_FontPath() const
{
return m_lpszFontPath;
}
int CRendText::get_RenderStyle() const
{
return m_RenderStyle;
}
int CRendText::set_RenderStyle(const int newStyle)
{
int old = m_RenderStyle;
m_RenderStyle = newStyle;
return old;
}
int CRendText::get_FontSize() const
{
return m_fontSize;
}
SDL_Color CRendText::get_ForeColor() const
{
return m_fgcol;
}
SDL_Color CRendText::set_ForeColor(const SDL_Color newColor)
{
SDL_Color old = m_fgcol;
m_fgcol = newColor;
return old;
}
SDL_Color CRendText::get_BackColor() const
{
return m_bgcol;
}
SDL_Color CRendText::set_BackColor(const SDL_Color newColor)
{
SDL_Color old = m_bgcol;
m_bgcol = newColor;
return old;
}
const TTF_Font * CRendText::get_Font() const
{
return m_Font;
}
const bool CRendText::get_ReleaseFontAfterUsed() const
{
return m_bReleaseFontAfterUsed;
}
bool CRendText::set_ReleaseFontAfterUsed(const bool bReleaseFontAfterUsed)
{
bool old = m_bReleaseFontAfterUsed;
m_bReleaseFontAfterUsed = bReleaseFontAfterUsed;
return old;
}
main函数:
#include <gl/glut.h>
#include <gl/gl.h> // Header File For The OpenGL32 Library
#include <gl/glu.h> // Header File For The GLu32 Library
//#include <gl/glaux.h>
#include <stdio.h>
#include <stdlib.h>
#include "font.h"
GLfloat LightAmbient[]= { 0.01f, 0.01f, 0.01f, 1.0f };
GLfloat LightDiffuse[]= { 0.033f, 0.033f, 0.033f, 1.0f };
GLfloat LightPosition[]= { 0.0f, 0.0f, 1.0f, 1.0f };
void init(void); //初始化
void display(void); //显示
void reshape(int w,int h); //窗口变化
void mouse(int button,int state,int x, int y); //鼠标操作
const GLfloat X = 2; //房间大小
TexInfo getTexInfo(char *message); //获得字符纹理
int ConvertToPowerOfTwo(int input) ;
GLfloat i=2; //字符纹理
GLfloat V[8][3]={{X,X,X},{X,X,-X},{-X,X,-X},{-X,X,X},
{-X,-X,X},{X,-X,X},{X,-X,-X},{-X,-X,-X}};
void displayMenu(); //显示菜单
bool isShow; //是否显示
int xPos,yPos;
int main(int argc,char** argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB);
glutInitWindowSize(800,600);
glutInitWindowPosition(100,100);
glutCreateWindow(argv[0]);
init();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMouseFunc(mouse);
glutMainLoop();
return 0;
}
void init(void)
{
isShow = true;
glClearColor(0.0,0.0,0.0,0.0);
glShadeModel(GL_FLAT); // Enable Smooth Shading
}
void display(void)
{
TexInfo texInfo;
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0,1.0,1.0);
glEnable(GL_TEXTURE_2D);
char *message = "所在目录：";
texInfo=getTexInfo(message);
glBindTexture(GL_TEXTURE_2D, texInfo.TexId);
//压崭
glPushMatrix();
glColor3f(1.0,0.0,0.0);
glBegin(GL_QUADS); //绘制立方体top
glTexCoord2f(1.0f, 0.0f);glVertex3fv(V[0]);
glTexCoord2f(0.0f, 0.0f);glVertex3fv(V[1]);
glTexCoord2f(0.0f, 1.0f);glVertex3fv(V[2]);
glTexCoord2f(1.0f, 1.0f);glVertex3fv(V[3]);
glEnd();
glColor3f(0.0,0.0,1.0);
glBegin(GL_QUADS); //绘制立方体right
glTexCoord2f(1.0f, 0.0f);glVertex3fv(V[3]);
glTexCoord2f(1.0f, 1.0f);glVertex3fv(V[2]);
glTexCoord2f(0.0f, 1.0f);glVertex3fv(V[7]);
glTexCoord2f(0.0f, 0.0f);glVertex3fv(V[4]);
glEnd();
glBegin(GL_QUADS); //绘制立方体left
glTexCoord2f(1.0f, 0.0f);glVertex3fv(V[0]);
glTexCoord2f(0.0f, 0.0f);glVertex3fv(V[1]);
glTexCoord2f(0.0f, 1.0f);glVertex3fv(V[6]);
glTexCoord2f(1.0f, 1.0f);glVertex3fv(V[5]);
glEnd();
glColor3f(0.0,1.0,1.0);
glBegin(GL_QUADS); //绘制立方体bottom
glTexCoord2f(1.0f, 0.0f);glVertex3fv(V[7]);
glTexCoord2f(0.0f, 0.0f);glVertex3fv(V[6]);
glTexCoord2f(0.0f, 1.0f);glVertex3fv(V[5]);
glTexCoord2f(1.0f, 1.0f);glVertex3fv(V[4]);
glEnd();
glColor3f(1.0,0.0,0.0);
glBegin(GL_QUADS); //绘制立方体front
glTexCoord2f(0.0f, 0.0f);glVertex3fv(V[0]);
glTexCoord2f(0.0f, 1.0f);glVertex3fv(V[3]);
glTexCoord2f(1.0f, 1.0f);glVertex3fv(V[4]);
glTexCoord2f(1.0f, 0.0f);glVertex3fv(V[5]);
glEnd();
glColor3f(1.0,1.0,0.0);
glBegin(GL_QUADS); //绘制立方体back
glTexCoord2f(1.0f, 0.0f);glVertex3fv(V[1]);
glTexCoord2f(1.0f, 1.0f);glVertex3fv(V[6]);
glTexCoord2f(0.0f, 1.0f);glVertex3fv(V[7]);
glTexCoord2f(0.0f, 0.0f);glVertex3fv(V[2]);
glEnd();
glPopMatrix();
if(isShow)
{
displayMenu();
}
glutSwapBuffers();
glFlush();
}
void reshape(int w,int h)
{
glViewport(0,0,(GLsizei)w,(GLsizei)h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-1.0,1.0,-1.0,1.0,1.5,20.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0.0,0.0,3.0,0.0,0.0,0.0,0.0,1.0,0.0);
}
void mouse(int button,int state,int x, int y)
{
printf("The mouse state is %d , %d/n",state,button);
switch(button)
{
case GLUT_LEFT_BUTTON:
{
xPos=x;
yPos=y;
isShow=true;
printf("GLUT_LEFT_BUTTON/n");
glutPostRedisplay();
}
break;
case GLUT_RIGHT_BUTTON:
{
isShow=false;
printf("GLUT_RIGHT_BUTTON/n");
glutPostRedisplay();
}
break;
default:
break;
}
}
TexInfo getTexInfo( char *message)
{
TexInfo texInfo;
CFont myFont;
myFont.T_SetFontColor(255,0,255);
myFont.T_SetFontBgColor(200,200,200);
myFont.T_SetFontStyle("-s","STKAITI.TTF",40);
SDL_Surface *fontSurface = NULL;
SDL_Surface *tmp = NULL;
fontSurface = myFont.GL_GenImage(message);
texInfo.w = fontSurface->w;
texInfo.h = fontSurface->h;
printf("texInfo is %d and %d/n",texInfo.w,texInfo.h);
texInfo.w = ConvertToPowerOfTwo(texInfo.w);
texInfo.h = ConvertToPowerOfTwo(texInfo.h);
printf("texInfo is %d and %d/n",texInfo.w,texInfo.h);
tmp = SDL_CreateRGBSurface(SDL_SWSURFACE, texInfo.w, texInfo.h, 32, 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000);
if (!tmp)
{
SDL_FreeSurface(fontSurface);
return texInfo;
}
if (SDL_BlitSurface(fontSurface, NULL, tmp, NULL))
{
SDL_FreeSurface(tmp);
SDL_FreeSurface(fontSurface);
return texInfo;
}
glGenTextures(1, &texInfo.TexId);
glBindTexture(GL_TEXTURE_2D, texInfo.TexId);
glTexImage2D(GL_TEXTURE_2D, 0, 4, texInfo.w, texInfo.h, 0, GL_RGBA, GL_UNSIGNED_BYTE, tmp->pixels);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
SDL_FreeSurface(tmp);
SDL_FreeSurface(fontSurface);
glBindTexture(GL_TEXTURE_2D, 0);
return texInfo;
}
//调整为规则尺寸2的幂
int ConvertToPowerOfTwo(int input)
{
int value = 1;
while ( value < input )
value <<= 1;
return value;
}
void displayMenu()
{
TexInfo texInfo[4];
char *message = "所在目录：";
texInfo[0]=getTexInfo(message);
message = "修改时间：";
texInfo[1]=getTexInfo(message);
message = "创建时间：";
texInfo[2]=getTexInfo(message);
message = "文件大小：";
texInfo[3]=getTexInfo(message);
glPushMatrix();
glTranslatef(-1.0,0.0,-1.0);
glScalef(1.0,1.2,1.0);
glColor3f(0.0,1.0,1.0);
glBindTexture(GL_TEXTURE_2D, texInfo[0].TexId);
glBegin(GL_QUADS);
glTexCoord2f(0.8f, 0.0f);glVertex3f(1.0,0.5,0.0);
glTexCoord2f(0.0f, 0.0f);glVertex3f(0.0,0.5,0.0);
glTexCoord2f(0.0f, 0.8f);glVertex3f(0.0,0.0,0.0);
glTexCoord2f(0.8f, 0.8f);glVertex3f(1.0,0.0,0.0);
glEnd();
glBindTexture(GL_TEXTURE_2D, texInfo[1].TexId);
glBegin(GL_QUADS);
glTexCoord2f(0.8f, 0.0f);glVertex3f(1.0,1.0,0.0);
glTexCoord2f(0.0f, 0.0f);glVertex3f(0.0,1.0,0.0);
glTexCoord2f(0.0f, 0.8f);glVertex3f(0.0,0.5,0.0);
glTexCoord2f(0.8f, 0.8f);glVertex3f(1.0,0.5,0.0);
glEnd();
glBindTexture(GL_TEXTURE_2D, texInfo[2].TexId);
glBegin(GL_QUADS);
glTexCoord2f(0.8f, 0.0f);glVertex3f(1.0,1.5,0.0);
glTexCoord2f(0.0f, 0.0f);glVertex3f(0.0,1.5,0.0);
glTexCoord2f(0.0f, 0.8f);glVertex3f(0.0,1.0,0.0);
glTexCoord2f(0.8f, 0.8f);glVertex3f(1.0,1.0,0.0);
glEnd();
glBindTexture(GL_TEXTURE_2D, texInfo[3].TexId);
glBegin(GL_QUADS);
glTexCoord2f(0.8f, 0.0f);glVertex3f(1.0,2.0,0.0);
glTexCoord2f(0.0f, 0.0f);glVertex3f(0.0,2.0,0.0);
glTexCoord2f(0.0f, 0.8f);glVertex3f(0.0,1.5,0.0);
glTexCoord2f(0.8f, 0.8f);glVertex3f(1.0,1.5,0.0);
glEnd();
glPopMatrix();
}