Lines Matching full:alpha
55 BOOL alpha);
70 BOOL alpha = FALSE;
83 alpha = TRUE;
88 fprintf (stderr, "Error: alpha-channel file %s does not exist\n",
146 if (pnm2png (fp_rd, fp_wr, fp_al, interlace, alpha) == FALSE)
157 /* close alpha file */
158 if (alpha)
182 " -a[lpha] <file>.pgm read PNG alpha channel as pgm-file\n");
191 BOOL alpha)
302 /* read header of PGM file with alpha channel */
304 if (alpha)
349 } /* end if alpha */
351 /* calculate the number of channels and store alpha-presence */
412 if (alpha) /* read alpha-channel from pgm file */
425 } /* if alpha */
