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Fix misaligned pointers

This commit is contained in:
James R 2019-11-07 16:29:58 -08:00
parent 7a770fa63c
commit ceb8d298c2
1 changed files with 12 additions and 12 deletions
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24
src/r_data.c
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@ -459,7 +459,7 @@ static UINT8 *R_GenerateTexture(size_t texnum)
int x, x1, x2, i, width, height;
size_t blocksize;
column_t *patchcol;
UINT32 *colofs;
UINT8 *colofs;
UINT16 wadnum;
lumpnum_t lumpnum;
@ -496,10 +496,10 @@ static UINT8 *R_GenerateTexture(size_t texnum)
// Check the patch for holes.
if (texture->width > SHORT(realpatch->width) || texture->height > SHORT(realpatch->height))
holey = true;
colofs = (UINT32 *)realpatch->columnofs;
colofs = (UINT8 *)realpatch->columnofs;
for (x = 0; x < texture->width && !holey; x++)
{
column_t *col = (column_t *)((UINT8 *)realpatch + LONG(colofs[x]));
column_t *col = (column_t *)((UINT8 *)realpatch + LONG(*(UINT32 *)&colofs[x<<2]));
INT32 topdelta, prevdelta = -1, y = 0;
while (col->topdelta != 0xff)
{
@ -528,19 +528,19 @@ static UINT8 *R_GenerateTexture(size_t texnum)
texturememory += blocksize;
// use the patch's column lookup
colofs = (UINT32 *)(void *)(block + 8);
texturecolumnofs[texnum] = colofs;
colofs = (block + 8);
texturecolumnofs[texnum] = (UINT32 *)colofs;
blocktex = block;
if (patch->flip & 1) // flip the patch horizontally
{
UINT32 *realcolofs = (UINT32 *)realpatch->columnofs;
UINT8 *realcolofs = (UINT8 *)realpatch->columnofs;
for (x = 0; x < texture->width; x++)
colofs[x] = realcolofs[texture->width-1-x]; // swap with the offset of the other side of the texture
*(UINT32 *)&colofs[x<<2] = realcolofs[( texture->width-1-x )<<2]; // swap with the offset of the other side of the texture
}
// we can't as easily flip the patch vertically sadly though,
// we have wait until the texture itself is drawn to do that
for (x = 0; x < texture->width; x++)
colofs[x] = LONG(LONG(colofs[x]) + 3);
*(UINT32 *)&colofs[x<<2] = LONG(LONG(*(UINT32 *)&colofs[x<<2]) + 3);
goto done;
}
@ -560,8 +560,8 @@ static UINT8 *R_GenerateTexture(size_t texnum)
memset(block, TRANSPARENTPIXEL, blocksize+1); // Transparency hack
// columns lookup table
colofs = (UINT32 *)(void *)block;
texturecolumnofs[texnum] = colofs;
colofs = block;
texturecolumnofs[texnum] = (UINT32 *)colofs;
// texture data after the lookup table
blocktex = block + (texture->width*4);
@ -616,8 +616,8 @@ static UINT8 *R_GenerateTexture(size_t texnum)
patchcol = (column_t *)((UINT8 *)realpatch + LONG(realpatch->columnofs[x-x1]));
// generate column ofset lookup
colofs[x] = LONG((x * texture->height) + (texture->width*4));
ColumnDrawerPointer(patchcol, block + LONG(colofs[x]), patch, texture->height, height);
*(UINT32 *)&colofs[x<<2] = LONG((x * texture->height) + (texture->width*4));
ColumnDrawerPointer(patchcol, block + LONG(*(UINT32 *)&colofs[x<<2]), patch, texture->height, height);
}
}