Updating help text for BMP support
diff --git a/basisu_tool.cpp b/basisu_tool.cpp
index 3fbc56a..44eb154 100644
--- a/basisu_tool.cpp
+++ b/basisu_tool.cpp
@@ -52,11 +52,11 @@
printf("\nUsage: basisu filename [filename ...] <options>\n");
puts("\n"
- "The default mode is compression of one or more PNG files to a .basis file. Alternate modes:\n"
+ "The default mode is compression of one or more PNG/BMP files to a .basis file. Alternate modes:\n"
" -unpack: Use transcoder to unpack .basis file to one or more .ktx/.png files\n"
" -validate: Validate and display information about a .basis file\n"
" -info: Display high-level information about a .basis file\n"
- " -compare: Compare two PNG images specified with -file, output PSNR and SSIM statistics and RGB/A delta images\n"
+ " -compare: Compare two PNG/BMP images specified with -file, output PSNR and SSIM statistics and RGB/A delta images\n"
" -version: Print basisu version and exit\n"
"Unless an explicit mode is specified, if one or more files have the .basis extension this tool defaults to unpack mode.\n"
"\n"
@@ -66,8 +66,8 @@
"Filenames prefixed with a @ symbol are read as filename listing files. Listing text files specify which actual filenames to process (one filename per line).\n"
"\n"
"Options:\n"
- " -file filename.png: Input image filename, multiple images are OK, use -file X for each input filename (prefixing input filenames with -file is optional)\n"
- " -alpha_file filename.png: Input alpha image filename, multiple images are OK, use -file X for each input filename (must be paired with -file), images converted to REC709 grayscale and used as input alpha\n"
+ " -file filename.png/bmp: Input image filename, multiple images are OK, use -file X for each input filename (prefixing input filenames with -file is optional)\n"
+ " -alpha_file filename.png/bmp: Input alpha image filename, multiple images are OK, use -file X for each input filename (must be paired with -file), images converted to REC709 grayscale and used as input alpha\n"
" -multifile_printf: printf() format strint to use to compose multiple filenames\n"
" -multifile_first: The index of the first file to process, default is 0 (must specify -multifile_printf and -multifile_num)\n"
" -multifile_num: The total number of files to process.\n"
