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Corrected row_pointers passed to libpng for SPR# images; they're top-down, not bottom up.

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This commit is contained in:
Fatbag 2012-05-31 06:49:02 -05:00
parent 1a9433163b
commit 31282d91f2
1 changed files with 2 additions and 10 deletions
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12
Tools/iff2html/image.c
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@ -53,20 +53,12 @@ int WritePNG(const char * OutName, const IFFChunk * ChunkData, const IFFSprite *
Image.Width = BMPHeader.biWidth;
Image.Height = BMPHeader.biHeight;
row_pointers = malloc(Image.Height * sizeof(png_bytep));
if(row_pointers == NULL){
free(Image.Data);
return 0;
}
for(i=0; i<Image.Height; i++)
row_pointers[i] = Image.Data + (Image.Height-i-1)*Image.Width*3;
}else{
/* SPR# or SPR2 sprite */
Image.Width = Sprite->Width;
Image.Height = Sprite->Height;
Image.Data = Sprite->BGRA32Data;
/* Swap from BGR to RGB; this cannot be done with libpng when you use opng_reduce_image
** due to the state that it leaves png_ptr in */
for(i=0; i<Image.Width*Image.Height; i++){
@ -82,7 +74,7 @@ int WritePNG(const char * OutName, const IFFChunk * ChunkData, const IFFSprite *
return 0;
}
for(i=0; i<Image.Height; i++)
row_pointers[i] = Image.Data + (Image.Height-i-1)*Image.Width*((ChunkData)?3:4);
row_pointers[i] = Image.Data + Image.Width*((ChunkData) ? 3*(Image.Height-i-1) : 4*i);
/****
** PNG handling