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Fill mode always runs right to left.

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Thomas Harte 2021-12-19 16:43:18 -05:00
parent ad602a4722
commit d2ad149e56
1 changed files with 3 additions and 8 deletions
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11
Machines/Amiga/Blitter.cpp
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@ -274,7 +274,7 @@ bool Blitter::advance_dma() {
// does-it-pass-the-tests? version. // does-it-pass-the-tests? version.
if(exclusive_fill_ || inclusive_fill_) { if(exclusive_fill_ || inclusive_fill_) {
uint16_t fill_output = 0; uint16_t fill_output = 0;
uint16_t bit = one_dot_ ? 0x0001 : 0x8000; uint16_t bit = 0x0001;
uint16_t flag = fill_carry ? bit : 0x0000; uint16_t flag = fill_carry ? bit : 0x0000;
while(bit) { while(bit) {
uint16_t pre_toggle = output & bit, post_toggle = pre_toggle; uint16_t pre_toggle = output & bit, post_toggle = pre_toggle;
@ -290,13 +290,8 @@ bool Blitter::advance_dma() {
flag ^= post_toggle; flag ^= post_toggle;
fill_carry = flag; fill_carry = flag;
if(one_dot_) { bit <<= 1;
bit <<= 1; flag <<= 1;
flag <<= 1;
} else {
bit >>= 1;
flag >>= 1;
}
} }
output = fill_output; output = fill_output;