DDS texture decoding

Functions
std::vector< uint8_t >	wows_stitch_decode_dds (const uint8_t *d, size_t sz, int *W, int *H)
	Decode a DDS texture buffer to raw RGBA pixels.
std::vector< uint8_t >	wows_stitch_dds_to_png (const std::string &path, int max_sz)
	Load a .dds file from disk and encode it as a PNG byte buffer.
std::vector< uint8_t >	wows_stitch_dds_to_png_from_memory (const uint8_t *data, size_t size, int max_sz)
	Decode a DDS buffer in memory and encode it as a PNG byte buffer.

Detailed Description

Function Documentation

wows_stitch_dds_to_png()

std::vector< uint8_t > wows_stitch_dds_to_png	(	const std::string &	path,
		int	max_sz
	)

Load a .dds file from disk and encode it as a PNG byte buffer.

If either dimension exceeds max_sz the image is downscaled to fit.

Parameters

path	Filesystem path to the .dds file.
max_sz	Maximum allowed width or height; 0 means no limit.

Returns

PNG-encoded bytes, or empty on failure.

wows_stitch_dds_to_png_from_memory()

std::vector< uint8_t > wows_stitch_dds_to_png_from_memory	(	const uint8_t *	data,
		size_t	size,
		int	max_sz
	)

Decode a DDS buffer in memory and encode it as a PNG byte buffer.

Like wows_stitch_dds_to_png but operates on an already-loaded DDS buffer rather than a filesystem path. Used when textures are archive-backed.

Parameters

data	Pointer to DDS file data in memory.
size	Size of the DDS data in bytes.
max_sz	Maximum allowed width or height; 0 means no limit.

Returns

PNG-encoded bytes, or empty on failure.

wows_stitch_decode_dds()

std::vector< uint8_t > wows_stitch_decode_dds	(	const uint8_t *	d,
		size_t	sz,
		int *	W,
		int *	H
	)

Decode a DDS texture buffer to raw RGBA pixels.

Supports the BC1/BC3/BC5/BC7 block-compressed formats used in WoWs.

Parameters

d	Pointer to the DDS file data in memory.
sz	Size of the DDS data in bytes.
W	Output: decoded image width in pixels.
H	Output: decoded image height in pixels.

Returns

RGBA pixel data (W × H × 4 bytes), or empty on failure.