Macintosh-Tools
/
dingusppc
mirror of https://github.com/dingusdev/dingusppc.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

atirage: Add offset to cursor X position. 

CUR_HORZ_OFF becomes non-zero when the cursor needs to be drawn to the left of the left edge of the frame buffer.

CUR_VERT_OFF is handled differently. When CUR_VERT_OFF is non-zero, CUR_OFFSET is changed to point to the first line of the cursor that will be drawn, so CUR_VERT_OFF is the number of lines to remove from the total height of the cursor.
Alternatively, we could handle CUR_VERT_OFF the same way as CUR_HORZ_OFF by leaving the cursor height constant, drawing the cursor starting from the CUR_VERT_OFF line, and adjusting cursor Y position by negative CUR_VERT_OFF.
This commit is contained in:
joevt 2024-03-20 04:54:03 -07:00 committed by dingusdev
parent ad6d5e9ec9
commit 9d0bae2d03
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
devices/video/atirage.cpp
View File

@ -797,7 +797,8 @@ void ATIRage::draw_hw_cursor(uint8_t *dst_buf, int dst_pitch) {
}
void ATIRage::get_cursor_position(int& x, int& y) {
x = extract_bits<uint32_t>(this->regs[ATI_CUR_HORZ_VERT_POSN], ATI_CUR_HORZ_POSN, ATI_CUR_HORZ_POSN_size);
x = extract_bits<uint32_t>(this->regs[ATI_CUR_HORZ_VERT_POSN], ATI_CUR_HORZ_POSN, ATI_CUR_HORZ_POSN_size) -
extract_bits<uint32_t>(this->regs[ATI_CUR_HORZ_VERT_OFF ], ATI_CUR_HORZ_OFF , ATI_CUR_HORZ_OFF_size );
y = extract_bits<uint32_t>(this->regs[ATI_CUR_HORZ_VERT_POSN], ATI_CUR_VERT_POSN, ATI_CUR_VERT_POSN_size);
}