void baiscobj::LoadT16(char *filename, GLuint &texture)//调帖图
{ glGenTextures(1, &texture); //获取1个未使用的贴图名称
glBindTexture(GL_TEXTURE_2D, texture); //选择要绑定的贴图(纹理)
BITMAPINFOHEADER bitHeader; //定义位图结构
unsigned char *buffer; //定义位图指针
buffer=LoadBitmapFileWithAlpha(filename,&bitHeader); //调入位图
glTexImage2D(GL_TEXTURE_2D,
0, GL_RGBA,bitHeader.biWidth,bitHeader.biHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,buffer);
//gluBuild2DMipmaps ( GL_TEXTURE_2D, // 创建一个 2D贴图(纹理)
// 4, // 使用3种颜色(RGB)+ 颜色深度
// bitHeader.biWidth, // 图像宽
// bitHeader.biHeight,// 图像高
// GL_RGBA, // 红绿蓝顺序
// GL_UNSIGNED_BYTE, // 图像的数据类型是字节
// buffer // 指定贴图(纹理)数据
// ); // 创建贴图(纹理)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_LINEAR); //缩小采用三线性滤波
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);//放大采用线性滤波
//glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
free(buffer); // 释放位图数据
}
bool LoadBmp(int image_id,char *name,int lim,...)
{
unsigned char r = 0,g = 0,b = 0;
unsigned char *buffer;
BITMAPINFOHEADER bitmapInfoHeader;
glGenTextures(1, &texture[image_id]); // Typical Texture Generation Using Data From The Bitmap
glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
glBindTexture(GL_TEXTURE_2D, texture[image_id]);
if(lim == 0)
{
buffer= LoadBitmapFile(name, &bitmapInfoHeader);
if(buffer == NULL)
return false;
glTexImage2D(GL_TEXTURE_2D, 0, 3, bitmapInfoHeader.biWidth, bitmapInfoHeader.biHeight, 0,
GL_RGB, GL_UNSIGNED_BYTE, buffer);
}
else
{
va_list ap;
va_start(ap, lim);
r =va_arg(ap, unsigned char);
g =va_arg(ap, unsigned char);
b =va_arg(ap, unsigned char);
va_end(ap);
buffer= LoadBitmapFileWithAlpha(name, &bitmapInfoHeader,r,g,b);
if(buffer == NULL)
return false;
glTexImage2D(GL_TEXTURE_2D, 0, 4, bitmapInfoHeader.biWidth, bitmapInfoHeader.biHeight, 0,
GL_RGBA, GL_UNSIGNED_BYTE, buffer);
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
free(buffer);
return true;
}
