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Added support for drawing polygon with pattern.

This commit is contained in:
Volker Ruppert 2021-07-06 06:40:53 +00:00
parent 0262b100a5
commit 4bf3b23983
1 changed files with 74 additions and 25 deletions
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99
bochs/iodev/display/banshee.cc
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@ -62,6 +62,7 @@
// - 2D host-to-screen stretching support
// - 2D screen-to-screen pattern stretching support
// - 2D chromaKey support
// - 2D reversible line drawing
// - pixel format conversion not supported in all cases
// - full AGP support
@ -2590,9 +2591,14 @@ void bx_banshee_c::blt_polygon_fill(bool force)
Bit32u dpitch = BLT.dst_pitch;
Bit8u dpxsize = (BLT.dst_fmt > 1) ? (BLT.dst_fmt - 1) : 1;
Bit8u *dst_ptr = &v->fbi.ram[BLT.dst_base];
Bit8u *dst_ptr1;
Bit8u *pat_ptr = &BLT.cpat[0][0];
Bit8u *dst_ptr1, *pat_ptr1 = NULL;
bool patmono = (BLT.reg[blt_command] >> 13) & 1;
bool patrow0 = (BLT.reg[blt_commandExtra] & 0x08) > 0;
bool set;
Bit8u colorkey_en = BLT.reg[blt_commandExtra] & 3;
Bit8u rop = 0;
Bit8u rop = 0, mask, patline;
Bit8u *color;
Bit16u x, y, x0, x1, y0, y1;
if (force) {
@ -2615,39 +2621,82 @@ void bx_banshee_c::blt_polygon_fill(bool force)
} else {
y1 = BLT.pgn_r1y;
}
if (BLT.pattern_blt) {
BX_ERROR(("Polygon fill with pattern not supported yet"));
}
// } else {
for (y = y0; y < y1; y++) {
x0 = calc_line_xpos(BLT.pgn_l0x, BLT.pgn_l0y, BLT.pgn_l1x, BLT.pgn_l1y, y, 0);
if (y <= BLT.pgn_r0y) {
x1 = calc_line_xpos(BLT.pgn_l0x, BLT.pgn_l0y, BLT.pgn_r0x, BLT.pgn_r0y, y, 1);
for (y = y0; y < y1; y++) {
x0 = calc_line_xpos(BLT.pgn_l0x, BLT.pgn_l0y, BLT.pgn_l1x, BLT.pgn_l1y, y, 0);
if (y <= BLT.pgn_r0y) {
x1 = calc_line_xpos(BLT.pgn_l0x, BLT.pgn_l0y, BLT.pgn_r0x, BLT.pgn_r0y, y, 1);
} else {
x1 = calc_line_xpos(BLT.pgn_r0x, BLT.pgn_r0y, BLT.pgn_r1x, BLT.pgn_r1y, y, 1);
}
if (BLT.pattern_blt) {
if (!patrow0) {
patline = (y + BLT.patsy) & 7;
if (patmono) {
pat_ptr1 = pat_ptr + patline;
} else {
pat_ptr1 = pat_ptr + patline * dpxsize * 8;
}
} else {
x1 = calc_line_xpos(BLT.pgn_r0x, BLT.pgn_r0y, BLT.pgn_r1x, BLT.pgn_r1y, y, 1);
pat_ptr1 = pat_ptr;
}
dst_ptr1 = dst_ptr + y * dpitch + x0 * dpxsize;
if (blt_clip_check(x0, y)) {
}
dst_ptr1 = dst_ptr + y * dpitch + x0 * dpxsize;
if (blt_clip_check(x0, y)) {
if (colorkey_en & 2) {
rop = blt_colorkey_check(dst_ptr1, dpxsize, 1);
}
if (BLT.pattern_blt) {
if (patmono) {
mask = 0x80 >> ((x0 + BLT.patsx) & 7);
set = (*pat_ptr1 & mask) > 0;
if (set) {
color = &BLT.fgcolor[0];
} else {
color = &BLT.bgcolor[0];
}
if ((set) || !BLT.transp) {
BLT.rop_fn[rop](dst_ptr1, color, dpitch, dpxsize, dpxsize, 1);
}
} else {
color = (pat_ptr1 + ((x0 + BLT.patsx) & 7) * dpxsize);
BLT.rop_fn[rop](dst_ptr1, color, dpitch, dpxsize, dpxsize, 1);
}
} else {
BLT.rop_fn[rop](dst_ptr1, BLT.fgcolor, dpitch, dpxsize, dpxsize, 1);
}
}
dst_ptr1 += dpxsize;
for (x = x0 + 1; x < x1; x++) {
if (blt_clip_check(x, y)) {
if (colorkey_en & 2) {
rop = blt_colorkey_check(dst_ptr1, dpxsize, 1);
}
BLT.rop_fn[rop](dst_ptr1, BLT.fgcolor, dpitch, dpxsize, dpxsize, 1);
}
dst_ptr1 += dpxsize;
for (x = x0 + 1; x < x1; x++) {
if (blt_clip_check(x, y)) {
if (colorkey_en & 2) {
rop = blt_colorkey_check(dst_ptr1, dpxsize, 1);
if (BLT.pattern_blt) {
if (patmono) {
mask = 0x80 >> ((x + BLT.patsx) & 7);
set = (*pat_ptr1 & mask) > 0;
if (set) {
color = &BLT.fgcolor[0];
} else {
color = &BLT.bgcolor[0];
}
if ((set) || !BLT.transp) {
BLT.rop_fn[rop](dst_ptr1, color, dpitch, dpxsize, dpxsize, 1);
}
} else {
color = (pat_ptr1 + ((x + BLT.patsx) & 7) * dpxsize);
BLT.rop_fn[rop](dst_ptr1, color, dpitch, dpxsize, dpxsize, 1);
}
} else {
BLT.rop_fn[rop](dst_ptr1, BLT.fgcolor, dpitch, dpxsize, dpxsize, 1);
}
dst_ptr1 += dpxsize;
}
dst_ptr1 += dpxsize;
}
BX_DEBUG(("Polygon fill: L0=(%d,%d) L1=(%d,%d) R0=(%d,%d) R1=(%d,%d) ROP0 %02X",
BLT.pgn_l0x, BLT.pgn_l0y, BLT.pgn_l1x, BLT.pgn_l1y,
BLT.pgn_r0x, BLT.pgn_r0y, BLT.pgn_r1x, BLT.pgn_r1y, BLT.rop[0]));
// }
}
BX_DEBUG(("Polygon fill: L0=(%d,%d) L1=(%d,%d) R0=(%d,%d) R1=(%d,%d) ROP0 %02X",
BLT.pgn_l0x, BLT.pgn_l0y, BLT.pgn_l1x, BLT.pgn_l1y,
BLT.pgn_r0x, BLT.pgn_r0y, BLT.pgn_r1x, BLT.pgn_r1y, BLT.rop[0]));
if (y1 == BLT.pgn_l1y) {
BLT.pgn_l0x = BLT.pgn_l1x;
BLT.pgn_l0y = BLT.pgn_l1y;