Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>I have some code somewhere, but it's just 20 lines or less. The BMP format is pretty simple, just read the header, then read every color, which serves as an index in the palette array. And keep in mind that BMPs are upside down:</p> <pre><code>//load a bmp texture, with the specified global alpha GLuint load_bmp8_fixed_alpha(char * FileName, Uint8 a) { int x,y,x_padding,x_size,y_size,colors_no,r,g,b,current_pallete_entry; //i unused? Uint8 * file_mem; Uint8 * file_mem_start; Uint8 * texture_mem; Uint8 * read_buffer; Uint8 * color_pallete; FILE *f = NULL; GLuint texture; f = fopen (FileName, "rb"); if (!f) return 0; file_mem = (Uint8 *) calloc ( 20000, sizeof(Uint8)); file_mem_start=file_mem; fread (file_mem, 1, 50, f);//header only //now, check to see if our bmp file is indeed a bmp file, and if it is 8 bits, uncompressed if(*((short *) file_mem)!=19778)//BM (the identifier) { free(file_mem_start); fclose (f); return 0; } file_mem+=18; x_size=*((int *) file_mem); file_mem+=4; y_size=*((int *) file_mem); file_mem+=6; if(*((short *)file_mem)!=8)//8 bit/pixel? { free(file_mem_start); fclose (f); return 0; } file_mem+=2; if(*((int *)file_mem)!=0)//any compression? { free(file_mem_start); fclose (f); return 0; } file_mem+=16; colors_no=*((int *)file_mem); if(!colors_no)colors_no=256; file_mem+=8;//here comes the pallete color_pallete=file_mem+4; fread (file_mem, 1, colors_no*4+4, f);//header only file_mem+=colors_no*4; x_padding=x_size%4; if(x_padding)x_padding=4-x_padding; //now, allocate the memory for the file texture_mem = (Uint8 *) calloc ( x_size*y_size*4, sizeof(Uint8)); read_buffer = (Uint8 *) calloc ( 2000, sizeof(Uint8)); for(y=0;y&lt;y_size;y++) { //fread (texture_mem+y*x_size, 1, x_size-x_padding, f); fread (read_buffer, 1, x_size-x_padding, f); for(x=0;x&lt;x_size;x++) { current_pallete_entry=*(read_buffer+x); b=*(color_pallete+current_pallete_entry*4); g=*(color_pallete+current_pallete_entry*4+1); r=*(color_pallete+current_pallete_entry*4+2); *(texture_mem+(y*x_size+x)*4)=r; *(texture_mem+(y*x_size+x)*4+1)=g; *(texture_mem+(y*x_size+x)*4+2)=b; *(texture_mem+(y*x_size+x)*4+3)=a; } } free(file_mem_start); free(read_buffer); fclose (f); //ok, now, hopefully, the file is loaded and converted... //so, assign the texture, and such glGenTextures(1, &amp;texture); glBindTexture(GL_TEXTURE_2D, texture); //failsafe bind_texture_id(texture); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); if(poor_man) { glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); } else if(use_mipmaps) { glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP_SGIS, GL_TRUE); } else { glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); } if(have_arb_compression) { if(have_s3_compression) glTexImage2D(GL_TEXTURE_2D,0,COMPRESSED_RGBA_S3TC_DXT5_EXT,x_size, y_size,0,GL_RGBA,GL_UNSIGNED_BYTE,texture_mem); else glTexImage2D(GL_TEXTURE_2D,0,COMPRESSED_RGBA_ARB,x_size, y_size,0,GL_RGBA,GL_UNSIGNED_BYTE,texture_mem); } else glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA,x_size, y_size,0,GL_RGBA,GL_UNSIGNED_BYTE,texture_mem); check_gl_errors(); free(texture_mem); return texture; } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POConverting 256 color bitmap to RGBA bitmap
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USgenpfault
    1. USRadu
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POConverting 256 color bitmap to RGBA bitmap
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COthose 20 lines would be very useful about now. Just looking for an idea about how to do it and how the 256 color bitmaps differ.
      singulars
      1. PO
      1. USPladnius Brooks
    2. COGive me your e-mail, I will send it to you.
      singulars
      1. PO
      1. USRadu
    3. COMy e-mail is redpixelengineer@gmail.com
      singulars
      1. PO
      1. USPladnius Brooks
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload