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Cleanup FreeMipmapColormap

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This commit is contained in:
Jaime Passos 2019-12-07 23:46:05 -03:00
parent 5ba363fda6
commit e9e0683d5e
1 changed files with 23 additions and 9 deletions
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32
src/hardware/hw_cache.c
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@ -776,22 +776,36 @@ static void FreeMipmapColormap(INT32 patchnum, void *patch)
{
GLPatch_t* const pat = patch;
(void)patchnum; //unused
while (pat->mipmap && pat->mipmap->nextcolormap) // The mipmap must be valid, obviously
// The patch must be valid, obviously
if (!pat)
return;
// The mipmap must be valid, obviously
while (pat->mipmap)
{
// Confusing at first, but pat->mipmap->nextcolormap
// at the beginning of the loop is the first colormap
// from the linked list of colormaps
GLMipmap_t *next = pat->mipmap;
if (!next) // No mipmap in this patch, break out of loop.
// from the linked list of colormaps.
GLMipmap_t *next = NULL;
// No mipmap in this patch, break out of the loop.
if (!pat->mipmap)
break;
// Set the first colormap
// to the one that comes after it
next = next->nextcolormap;
// No colormap mipmap either.
if (!pat->mipmap->nextcolormap)
break;
// Set the first colormap to the one that comes after it.
next = pat->mipmap->nextcolormap;
pat->mipmap->nextcolormap = next->nextcolormap;
// Free image data from memory
// Free image data from memory.
if (next->grInfo.data)
Z_Free(next->grInfo.data);
// Free the old colormap from memory
// Free the old colormap from memory.
free(next);
}
}