sdds.h File Reference

#include "gfxlib_struct.h"

Go to the source code of this file.

Functions
void	ddsDecompress (unsigned char *&input, unsigned char *&output, TEXTUREFORMAT format, int height, int width)

Function Documentation

void ddsDecompress	(	unsigned char *&	input,
		unsigned char *&	output,
		TEXTUREFORMAT	format,
		int	height,
		int	width
	)

Definition at line 111 of file sdds.cpp.

References buffer, decode_color_block(), decode_dxt3_alpha(), decode_dxt5_alpha(), DXT3, DXT5, height, width, x, and y.

Referenced by GFXTransferTexture(), and LoadTex().

{
    unsigned char *pos_out = NULL, *pos_in = NULL;
    int bpp = 4;
    unsigned int   sx, sy;

    sx      = (width < 4) ? width : 4;
    sy      = (height < 4) ? width : 4;
    data    = (unsigned char*) malloc( height*width*bpp );
    pos_out = data;
    pos_in  = buffer;
    for (int y = 0; y < height; y += 4)
        for (int x = 0; x < width; x += 4) {
            pos_out = data+(y*width+x)*bpp;
            if (internformat == DXT3) {
                decode_dxt3_alpha( pos_out+3, pos_in, sx, sy, width*bpp );
                pos_in += 8;
            } else if (internformat == DXT5) {
                decode_dxt5_alpha( pos_out+3, pos_in, sx, sy, bpp, width*bpp );
                pos_in += 8;
            }
            decode_color_block( pos_out, pos_in, sx, sy, width*bpp, internformat );
            pos_in += 8;
        }
}