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Fixed backward screen-to-screen copy operation for > 8 bpp modes.

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This commit is contained in:
Volker Ruppert 2023-12-21 10:53:13 +01:00
parent 75ea1c2222
commit b63b1225a8
1 changed files with 6 additions and 4 deletions
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10
bochs/iodev/display/banshee.cc
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@ -2,7 +2,7 @@
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2017-2021 The Bochs Project
// Copyright (C) 2017-2023 The Bochs Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
@ -1885,6 +1885,7 @@ void bx_banshee_c::blt_screen_to_screen()
Bit8u colorkey_en = BLT.reg[blt_commandExtra] & 3;
int spitch;
int dpitch = BLT.dst_pitch;
int bkw_adj = 0;
int ncols, nrows, dx, dy, sx, sy, w, h;
Bit8u smask, rop = 0;
bool set;
@ -1911,6 +1912,7 @@ void bx_banshee_c::blt_screen_to_screen()
}
dst_ptr = &v->fbi.ram[BLT.dst_base + dy * dpitch + dx * dpxsize];
if (BLT.x_dir) {
bkw_adj = dpxsize - 1;
dpxsize *= -1;
}
if (BLT.y_dir) {
@ -1962,7 +1964,7 @@ void bx_banshee_c::blt_screen_to_screen()
if (colorkey_en & 2) {
rop |= blt_colorkey_check(dst_ptr1, abs(dpxsize), 1);
}
BLT.rop_fn[rop](dst_ptr1, src_ptr1, dpitch, spitch, abs(dpxsize), 1);
BLT.rop_fn[rop](dst_ptr1 + bkw_adj, src_ptr1 + bkw_adj, dpitch, spitch, abs(dpxsize), 1);
src_ptr1 += dpxsize;
dst_ptr1 += dpxsize;
} while (--ncols);
@ -1970,8 +1972,8 @@ void bx_banshee_c::blt_screen_to_screen()
dst_ptr += dpitch;
} while (--nrows);
} else {
src_ptr += (sy * abs(spitch) + sx * abs(dpxsize));
BLT.rop_fn[0](dst_ptr, src_ptr, dpitch, spitch, w * abs(dpxsize), h);
src_ptr += (sy * abs(spitch) + sx * abs(dpxsize) + bkw_adj);
BLT.rop_fn[0](dst_ptr + bkw_adj, src_ptr, dpitch, spitch, w * abs(dpxsize), h);
}
blt_complete();
BX_UNLOCK(render_mutex);