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png2rle: handle 4-bit depth png files

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should make a warning I suppose
This commit is contained in:
Vince Weaver 2019-07-11 13:55:15 -04:00
parent 5af4f268d0
commit 44f183b72a
3 changed files with 29 additions and 10 deletions
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37
gr-utils/loadpng.c
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@ -166,20 +166,39 @@ int loadpng(char *filename, unsigned char **image_ptr, int *xsize, int *ysize) {
for(y=0;y<height;y+=2) { for(y=0;y<height;y+=2) {
for(x=0;x<width/2;x++) { for(x=0;x<width/2;x++) {
/* top color */ if (bit_depth==8) {
a2_color=row_pointers[y][x*2]; /* top color */
a2_color=row_pointers[y][x*2];
/* bottom color */ /* bottom color */
color=row_pointers[y+1][x*2]; color=row_pointers[y+1][x*2];
a2_color|=(color<<4); a2_color|=(color<<4);
if (debug) { if (debug) {
printf("%x ",a2_color); printf("%x ",a2_color);
}
*out_ptr=a2_color;
out_ptr++;
} }
else if (bit_depth==4) {
/* top color */
a2_color=row_pointers[y][x];
*out_ptr=a2_color; /* bottom color */
out_ptr++; color=row_pointers[y+1][x];
a2_color|=(color<<4);
if (debug) {
printf("%x ",a2_color);
}
*out_ptr=a2_color;
out_ptr++;
}
} }
if (debug) printf("\n"); if (debug) printf("\n");
} }

2
gr-utils/png2rle.c
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@ -154,7 +154,7 @@ int rle_smaller(int out_type, char *varname,
fprintf(stdout,"%c",xsize); fprintf(stdout,"%c",xsize);
} }
size+=2; size+=1;
/* Get first top/bottom color pair */ /* Get first top/bottom color pair */
last=image[x]; last=image[x];

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ootw/ootw_graphics/l2jail/dome.png Normal file
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