[PATCH v4 3/3] windowscodecs: Add support for decoding uncompressed DDS image.

[Ziqing Hui]

For uncompressed DDS image, "a block" means a pixel.

Signed-off-by: Ziqing Hui 
---
 dlls/windowscodecs/ddsformat.c       | 75 +++++++++++++++++-----------
 dlls/windowscodecs/tests/ddsformat.c | 10 ----
 2 files changed, 47 insertions(+), 38 deletions(-)