Commits on Jul 24, 2024

1. stb_image: support horizontally flipped TGA images …

   The TGA format is a bottom-left format by default: the first byte
   of the first column is expected to be displayed at the bottom-left
   of the screen, this behavior is inherited from devices painting the
   screen from the bottom left to the top right.
   
   The TGA format provides two bits in the image descriptor byte to paint
   the data from other sides. The 4th bit tells the device to paint the
   screen from right-to left and the 5th bit tells the device to paint
   the screen from top to bottom.
   
   So basically:
   
   - 00: from bottom-left to top-right
   - 01: from top-left to bottom-right
   - 10: from bottom-right to top-left
   - 11: from top-right to bottom-left
   
   Previously stb_image only read the 5th bit and then only supported the
   loading of vertically flipped images, stb_image was ignoring the 4th bit
   coding the horizontal flip. Now both flipping directions are supported
   for both raw and RLE storage.

   

   illwieckz committed Jul 24, 2024
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