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improve 24-bit Z to 32-bit Z conversion

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This commit is contained in:
Brian 2007-11-26 09:35:39 -07:00
parent 46e03d584a
commit 74cd0b459f
1 changed files with 3 additions and 2 deletions
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5
src/mesa/swrast/s_readpix.c
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@ -1,6 +1,6 @@
/*
* Mesa 3-D graphics library
* Version: 6.5.3
* Version: 7.0.3
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
@ -129,7 +129,8 @@ read_depth_pixels( GLcontext *ctx,
rb->GetRow(ctx, rb, width, x, y, dest);
/* convert range from 24-bit to 32-bit */
for (k = 0; k < width; k++) {
dest[k] = (dest[k] << 8) | (dest[k] >> 24);
/* Note: put MSByte of 24-bit value into LSByte */
dest[k] = (dest[k] << 8) | ((dest[k] >> 16) & 0xff);
}
}
}