Decoders emit linear images on every platform. image_texture_tile_gx()
rewrites one in place as GX RGBA8 tiles, through the same four-row band,
and the overlay loader calls it when gfx_surface's requirements name
GFX_SURFACE_PIXFMT_GX_RGBA8 - the gx driver points the GPU at overlay
pixels where they lie, and nothing else on the GameCube or Wii wants
tiles. RGUI's wallpaper and thumbnails, the thumbnail downscale and the
image viewer core read rows, and now get rows. A pack loaded for the gx
driver keeps no APNG stream either: nothing can show its frames, so the
file is not read a second time and its bytes do not sit in MEM1.
samples/formats/image_tile_gx checks the helper against the layout's
definition and against the band conversion byte for byte, at every size
up to 70x44, and runs in the formats samples workflow.
libretroadmin
0754faf84d