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I'm trying to map textures into my game, but the image isn't precisely mapped. I used a .bmp format picture

here is my code:

GLuint LoadTexture( const char * filename, int width, int height ){
    GLuint texture;
    unsigned char * data;
    FILE * file;

    file = fopen( filename, "rb" );
    if ( file == NULL ) return 0;
    data = (unsigned char *)malloc( width * height * 3 );
    fread( data, width * height * 3, 1, file );
    fclose( file );
  glGenTextures( 1, &texture ); 
    glBindTexture( GL_TEXTURE_2D, texture ); 
    glTexEnvf( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ); 


    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR );
    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR );

    //to the edge of our shape. 
    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT );
    glTexParameterf( GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT );

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
    free( data ); 
    return texture; 
}

here is the images

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1 回答 1

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bmp 文件的“标题”部分总是有 14 个字节大小，因此最好从第 15 个字节开始读取。很多个月前我和你有同样的问题。

所以......在你之前使用这样的函数调用fread：

 fseek ( file, 15, SEEK_SET);
于 2013-11-08T07:32:54.277 回答