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fix shift direction and cleanup comments

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This commit is contained in:
Dobrica Pavlinusic
2012-04-09 20:25:40 +02:00
parent 752da5ca3f
commit 75bed710f7
1 changed files with 3 additions and 3 deletions
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6
blitbuffer.c
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@@ -443,7 +443,7 @@ static int dimRect(lua_State *L) {
}
if(x & 1) {
/* This will invert the leftmost column
/* This will dimm the leftmost column
* in the case when x is odd. After this,
* x will become even. */
dstptr = (uint8_t*)(dst->data +
@@ -451,7 +451,7 @@ static int dimRect(lua_State *L) {
x / 2);
for(cy = 0; cy < h; cy++) {
int px = *dstptr & 0x0F;
*dstptr &= 0xF0 | px << 1;
*dstptr &= 0xF0 | px >> 1;
dstptr += dst->pitch;
}
x++;
@@ -469,7 +469,7 @@ static int dimRect(lua_State *L) {
dstptr += dst->pitch;
}
if(w & 1) {
/* This will invert the rightmost column
/* This will dimm the rightmost column
* in the case when (w & 1) && !(x & 1) or
* !(w & 1) && (x & 1). */
dstptr = (uint8_t*)(dst->data +