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executor/src/xdblt.c

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/* Copyright 1995 by Abacus Research and
* Development, Inc. All rights reserved.
*/
#if !defined (OMIT_RCSID_STRINGS)
char ROMlib_rcsid_xdblt[] =
"$Id: xdblt.c 63 2004-12-24 18:19:43Z ctm $";
#endif
#include "rsys/common.h"
#include "QuickDraw.h"
#include "MemoryMgr.h"
#include "rsys/xdata.h"
#include "rsys/xdblt.h"
#include "rsys/vdriver.h"
#if defined (USE_VGAVDRIVER)
#include "rsys/vgavdriver.h"
#endif
#include "rsys/quick.h"
#include "rsys/cquick.h"
#include "rsys/mman.h"
#include "rsys/dirtyrect.h"
#include "rsys/prefs.h"
#include "rsys/host.h"
#include "rsys/autorefresh.h"
/* Holds the four-byte pattern value, for "short & narrow" patterns. */
uint32 xdblt_pattern_value asm ("_xdblt_pattern_value");
/* Holds the row bytes for the pattern. Always evenly divisible by four. */
uint32 xdblt_log2_pattern_row_bytes asm ("_xdblt_log2_pattern_row_bytes");
/* Holds the row bytes for the pattern. Always evenly divisible by four. */
uint32 xdblt_pattern_height_minus_1 asm ("_xdblt_pattern_height_minus_1");
/* Start and end of the pattern. */
uint32 *xdblt_pattern_baseaddr asm ("_xdblt_pattern_baseaddr");
uint32 *xdblt_pattern_end asm ("_xdblt_pattern_end");
/* Since the pattern may be rotated vertically, we add this to the
* row we would otherwise compute to display on bitmap row #N.
*/
uint32 xdblt_pattern_row_0 asm ("_xdblt_pattern_row_0");
/* Table of functions that describe this transfer mode. */
const void **xdblt_stub_table asm ("_xdblt_stub_table");
/* log base 2 of the bits per pixel of the destination bitmap [0, 5]. */
uint32 xdblt_log2_bpp asm ("_xdblt_log2_bpp");
/* "Special region" data to be transferred. */
const INTEGER *xdblt_rgn_start asm ("_xdblt_rgn_start");
/* Added to the X value grabbed from the region to get the "real" value. */
uint32 xdblt_x_offset asm ("_xdblt_x_offset");
/* Canonicalized base address of the destination bitmap. We offset
* the bitmap's base so that (region_y_val * dst_rowbytes) is the
* offset from the baseaddr to the proper row.
*/
uint32 *xdblt_dst_baseaddr asm ("_xdblt_dst_baseaddr");
/* Bytes per row of the destination bitmap. */
uint32 xdblt_dst_row_bytes asm ("_xdblt_dst_row_bytes");
/* Bit pattern inserted for bit insertion modes. */
uint32 xdblt_insert_bits asm ("_xdblt_insert_bits");
#if defined (VGA_SCREEN_NEEDS_FAR_PTR)
uint16 xdblt_dst_selector asm ("_xdblt_dst_selector");
#endif
#define M(n) CLC (0xFFFFFFFFU >> (n))
const uint32 xdblt_mask_array[32] asm ("_xdblt_mask_array") =
{
M(0), M(1), M(2), M(3), M(4), M(5), M(6), M(7),
M(8), M(9), M(10), M(11), M(12), M(13), M(14), M(15),
M(16), M(17), M(18), M(19), M(20), M(21), M(22), M(23),
M(24), M(25), M(26), M(27), M(28), M(29), M(30), M(31)
};
#undef M
/* Since we map all modes to one of { copy, or, xor, and }, sometimes we
* need to flip the pattern bits. This table tells us when to do that.
*/
static const uint32 flip_mask_for_mode[8] = { 0, 0, 0, ~0, ~0, ~0, ~0, 0 };
/* This macro rotates the specified 32 bit value right by the given
* number of bits and modifies the input value. It can only be called
* if 0 < count < 32; otherwise, the result is undefined.
*/
#if defined (i386)
#define RORL(count, n) \
asm ("rorl %%cl,%0" : "=g" (n) : "c" (count), "0" (n) : "cc");
#elif defined (mc68000)
#define RORL(count, n) \
asm ("rorl %1,%0" : "=d" (n) : "d" (count), "0" (n) : "cc");
#else /* !i386 && !mc68000 */
#define RORL(count, n) \
do { \
uint32 _tmp_ = (n); \
int _count_ = (count); \
(n) = (_tmp_ >> _count_) | (_tmp_ << (32 - _count_)); \
} while (0)
#endif /* !i386 && !mc68000 */
/* Sometimes we call internal routines but we don't want the mode to
* get touched like it normally does. As a workaround we mark the mode
* as "canonical" by ORing in some magic high bits.
*/
#define MODE_CANON_BITS 0x73A12300
#define MODE_CANON_MASK 0xFFFFFF00
#define MODE_CANON_P(m) (((m) & MODE_CANON_MASK) == MODE_CANON_BITS)
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
static inline boolean_t
hide_cursor_if_necessary (RgnHandle rh, const PixMap *dst, boolean_t *old_vis)
{
int top, left;
RgnPtr rp;
top = CW (dst->bounds.top);
left = CW (dst->bounds.left);
rp = STARH (rh);
*old_vis = host_hide_cursor_if_intersects (CW (rp->rgnBBox.top) - top,
CW (rp->rgnBBox.left) - left,
CW (rp->rgnBBox.bottom) - top,
CW (rp->rgnBBox.right) - left);
return TRUE;
}
#endif /* VDRIVER_SUPPORTS_REAL_SCREEN_BLITS */
static inline int
setup_dst_bitmap (int log2_bpp, PixMap *dst_pixmap)
{
char *dst;
int byte_slop;
int row_bytes;
/* Long-align the bitmap, and set it up so that
* baseaddr + y * row_bytes evaluates to the correct row.
*/
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
if (VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& active_screen_addr_p (dst_pixmap))
{
row_bytes = vdriver_real_screen_row_bytes;
dst = (char *) vdriver_real_screen_baseaddr;
#if defined (VGA_SCREEN_NEEDS_FAR_PTR)
xdblt_dst_selector = vga_screen_selector;
#endif
}
else
#endif /* VDRIVER_SUPPORTS_REAL_SCREEN_BLITS */
{
row_bytes = BITMAP_ROWBYTES (dst_pixmap);
dst = (char *) MR (dst_pixmap->baseAddr);
#if defined (VGA_SCREEN_NEEDS_FAR_PTR)
asm ("movw %%ds,%0" : "=m" (xdblt_dst_selector));
#endif
}
dst -= row_bytes * CW (dst_pixmap->bounds.top);
xdblt_dst_row_bytes = row_bytes;
byte_slop = (unsigned long) dst & 3;
xdblt_dst_baseaddr = (uint32 *) (dst - byte_slop);
xdblt_x_offset = ((byte_slop << 3)
- (CW (dst_pixmap->bounds.left) << log2_bpp));
return xdblt_x_offset << 3;
}
INTEGER phony_special_region[7] =
{ 0, 0, 0, RGNSTOP, 0, RGNSTOP, RGNSTOPX };
/* This is the fastest blitter function. It can be called when the
* xdata is one row tall and 4 bytes wide, the xdata pixels are not
* RGB, and when no different value can be achieved by rotating the
* pattern value by any multiple of the bits per pixel. Some examples
* are 0 or ~0 at any bpp, 0xA1A1A1A1 at 8bpp, 0x55555555 at 2bpp, etc.
*/
boolean_t
xdblt_xdata_norgb_norotate (RgnHandle rh, int mode,
int pat_x_rotate_count, int pat_y_rotate_count,
xdata_t *x, PixMap *dst)
{
RgnPtr r;
int log2_bpp;
boolean_t active_screen_p;
vdriver_accel_result_t accel_result;
boolean_t mode_canon_p;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
boolean_t cursor_maybe_changed_p, cursor_vis_p;
#endif
check_bitmap (dst, CHKR_WO);
mode_canon_p = MODE_CANON_P (mode);
mode &= 7;
active_screen_p = active_screen_addr_p (dst);
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
/* If we can blit directly to the real screen, change the mode
* appropriately.
*/
if (VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& active_screen_p)
{
cursor_maybe_changed_p = hide_cursor_if_necessary (rh, dst,
&cursor_vis_p);
}
else
cursor_maybe_changed_p = FALSE;
#endif /* VDRIVER_SUPPORTS_REAL_SCREEN_BLITS */
if (!mode_canon_p)
{
xdblt_pattern_value = x->pat_value ^ flip_mask_for_mode[mode];
mode &= 3;
}
if (active_screen_p
&& mode == (patCopy & 3) /* patCopy or notPatCopy */
&& (r = STARH (rh), r->rgnSize == SMALLRGNX))
{
int top, left;
top = CW (dst->bounds.top);
left = CW (dst->bounds.left);
accel_result = vdriver_accel_rect_fill
(CW (r->rgnBBox.top) - top, CW (r->rgnBBox.left) - left,
CW (r->rgnBBox.bottom) - top, CW (r->rgnBBox.right) - left,
xdblt_pattern_value & ROMlib_pixel_size_mask[x->log2_bpp]);
if (accel_result != VDRIVER_ACCEL_NO_UPDATE)
note_executor_changed_screen (CW (r->rgnBBox.top) - top,
CW (r->rgnBBox.bottom) - top);
}
else
accel_result = VDRIVER_ACCEL_NO_UPDATE;
if (accel_result != VDRIVER_ACCEL_FULL_UPDATE)
{
xdblt_log2_pattern_row_bytes = 2;
xdblt_pattern_row_0 = 0;
xdblt_pattern_baseaddr = &xdblt_pattern_value;
xdblt_pattern_end = &xdblt_pattern_value + 1;
xdblt_stub_table = x->stub_table_for_mode[mode];
xdblt_log2_bpp = log2_bpp = x->log2_bpp;
setup_dst_bitmap (log2_bpp, dst);
SETUP_SPECIAL_RGN (rh, xdblt_rgn_start);
/* Make sure we have access to the raw screen bits. */
vdriver_accel_wait ();
/* Actually do the blit. */
xdblt_canon_pattern ();
}
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
if (cursor_maybe_changed_p)
host_set_cursor_visible (cursor_vis_p);
#endif
return (!VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& accel_result == VDRIVER_ACCEL_NO_UPDATE);
}
/* Contrary to my expectation, a small test program shows that RGB
* pattern modes do not seem to get mapped to different low-level
* modes. Exactly the same boolean transfer function happens in 16bpp
* as in 8bpp.
*/
#if defined (RGB_NEEDS_MODE_MAPPING)
/* This table maps normal modes to the mode to use when the transfer
* involves RGB pixels. This is necessary because the 0 bits of
* indirect pixels are white, while the 0 bits of indirect pixels are
* black. Consequently, the transfer modes have different semantics
* when viewed at a raw bit level. */
static const int
ind_mode_to_rgb_mode[8] =
{
patCopy & 7, /* patCopy -> patCopy */
notPatBic & 7, /* patOr -> notPatBic */
patXor & 7, /* patXor -> patXor */
notPatOr & 7, /* patBic -> notPatOr */
notPatCopy & 7, /* notPatCopy -> notPatCopy */
patBic & 7, /* notPatOr -> patBic */
notPatXor & 7, /* notPatXor -> notPatXor */
patOr & 7, /* notPatBic -> patOr */
};
#endif /* RGB_NEEDS_MODE_MAPPING */
boolean_t
xdblt_xdata_short_narrow (RgnHandle rh, int mode,
int pat_x_rotate_count, int pat_y_rotate_count,
xdata_t *x, PixMap *dst)
{
uint32 v, flip;
int rcount, log2_bpp;
boolean_t mode_canon_p;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
boolean_t cursor_maybe_changed_p, cursor_vis_p;
#endif
check_bitmap (dst, CHKR_WO);
mode_canon_p = MODE_CANON_P (mode);
mode &= 7;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
/* If we can blit directly to the real screen, change the mode
* appropriately.
*/
if (VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& active_screen_addr_p (dst))
{
cursor_maybe_changed_p = hide_cursor_if_necessary (rh, dst,
&cursor_vis_p);
}
else
cursor_maybe_changed_p = FALSE;
#endif /* VDRIVER_SUPPORTS_REAL_SCREEN_BLITS */
#if defined (RGB_NEEDS_MODE_MAPPING)
if (x->rgb_spec && !mode_canon_p)
mode = ind_mode_to_rgb_mode[mode];
#endif
if (!mode_canon_p)
xdblt_stub_table = x->stub_table_for_mode[mode & 3];
else
xdblt_stub_table = x->stub_table_for_mode[mode];
if (xdblt_stub_table == xdblt_nop_table)
return FALSE;
xdblt_log2_bpp = log2_bpp = x->log2_bpp;
pat_x_rotate_count <<= log2_bpp;
pat_x_rotate_count += setup_dst_bitmap (log2_bpp, dst);
SETUP_SPECIAL_RGN (rh, xdblt_rgn_start);
if (mode_canon_p)
flip = 0;
else
flip = flip_mask_for_mode[mode];
if (x->rgb_spec)
flip &= x->rgb_spec->pixel_bits_mask;
v = x->pat_value ^ flip;
rcount = pat_x_rotate_count & 31;
if (rcount)
RORL (rcount, v);
xdblt_pattern_value = v;
xdblt_log2_pattern_row_bytes = 2;
xdblt_pattern_row_0 = 0;
xdblt_pattern_baseaddr = &xdblt_pattern_value;
xdblt_pattern_end = &xdblt_pattern_value + 1;
/* Make sure we have access to the raw screen bits. */
vdriver_accel_wait ();
/* Actually do the blit. */
xdblt_canon_pattern ();
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
if (cursor_maybe_changed_p)
host_set_cursor_visible (cursor_vis_p);
#endif
return !VDRIVER_BYPASS_INTERNAL_FBUF_P ();
}
/* This function XORs FLIP_MASK with all of the longs in the xdata,
* and then rotates the given xdata by XROT bits.
*/
static inline void
rotate_and_flip_xdata (xdata_t *x, int xrot, uint32 flip_mask)
{
/* First flip all bits appropriately. */
if (flip_mask != 0)
{
uint32 *p, *e;
e = xdblt_pattern_end;
for (p = xdblt_pattern_baseaddr; p != e; p++)
*p ^= flip_mask;
}
/* Now rotate them appropriately. */
if (xrot != 0)
{
int row_bytes = (1 << x->log2_row_bytes);
if (row_bytes == 4)
{
uint32 *p, *e;
e = xdblt_pattern_end;
for (p = xdblt_pattern_baseaddr; p != e; p++)
RORL (xrot, *p);
}
else
{
uint8 *scratch, *s, *p, *e;
int rs, bs;
/* The following code rotates the pattern array right by
* XROT bits, assuming the bits are stored in bits-big-endian
* byte order.
*/
scratch = alloca (x->byte_size);
e = (uint8 *) xdblt_pattern_end;
bs = xrot >> 3;
rs = xrot & 7;
if (rs != 0)
{
int ls;
unsigned xmask;
xmask = row_bytes - 1;
ls = 8 - rs;
/* This is the tricky case, where we aren't
* rotating by an integral number of bytes.
*/
for (p = (uint8 *) xdblt_pattern_baseaddr, s = scratch;
p != e;
p += row_bytes, s += row_bytes)
{
uint8 next;
int i;
next = p[0];
for (i = xmask; i >= 0; i--)
{
uint8 v = p[i];
s[(i + bs) & xmask] = ((v >> rs) | (next << ls));
next = v;
}
}
memcpy (xdblt_pattern_baseaddr, scratch, x->byte_size);
}
else
{
/* Special case for when we are rotating an integral number
* of bytes.
*/
p = (uint8 *) xdblt_pattern_baseaddr;
memcpy (scratch, p, x->byte_size);
for (s = scratch; p != e; p += row_bytes, s += row_bytes)
{
memcpy (p, s + row_bytes - bs, bs);
memcpy (p + bs, s, row_bytes - bs);
}
}
}
}
}
boolean_t
xdblt_xdata_complex (RgnHandle rh, int mode,
int pat_x_rotate_count, int pat_y_rotate_count,
xdata_t *x, PixMap *dst)
{
const char *base;
uint32 flip_mask;
boolean_t mode_canon_p;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
boolean_t cursor_maybe_changed_p, cursor_vis_p;
#endif
check_bitmap (dst, CHKR_WO);
mode_canon_p = MODE_CANON_P (mode);
mode &= 7;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
/* If we can blit directly to the real screen, change the mode
* appropriately.
*/
if (VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& active_screen_addr_p (dst))
{
cursor_maybe_changed_p = hide_cursor_if_necessary (rh, dst,
&cursor_vis_p);
}
else
cursor_maybe_changed_p = FALSE;
#endif /* VDRIVER_SUPPORTS_REAL_SCREEN_BLITS */
#if defined (RGB_NEEDS_MODE_MAPPING)
if (x->rgb_spec && !mode_canon_p)
mode = ind_mode_to_rgb_mode[mode];
#endif
base = (const char *) x->pat_bits;
xdblt_pattern_baseaddr = (uint32 *) base;
xdblt_pattern_end = (uint32 *) (&base[x->byte_size]);
pat_x_rotate_count <<= x->log2_bpp;
pat_x_rotate_count += setup_dst_bitmap (x->log2_bpp, dst);
if (mode_canon_p)
flip_mask = 0;
else
flip_mask = flip_mask_for_mode[mode];
rotate_and_flip_xdata (x, ((pat_x_rotate_count - x->pat_x_rot)
& x->row_bits_minus_1),
flip_mask ^ x->pat_flip_mask);
x->pat_flip_mask = flip_mask;
x->pat_x_rot = pat_x_rotate_count;
xdblt_log2_pattern_row_bytes = x->log2_row_bytes;
xdblt_log2_bpp = x->log2_bpp;
if (mode_canon_p)
xdblt_stub_table = x->stub_table_for_mode[mode];
else
xdblt_stub_table = x->stub_table_for_mode[mode & 3];
xdblt_pattern_row_0 = (-pat_y_rotate_count) & x->height_minus_1;
xdblt_pattern_height_minus_1 = x->height_minus_1;
SETUP_SPECIAL_RGN (rh, xdblt_rgn_start);
/* Make sure we have access to the raw screen bits. */
vdriver_accel_wait ();
xdblt_canon_pattern ();
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
if (cursor_maybe_changed_p)
host_set_cursor_visible (cursor_vis_p);
#endif
return !VDRIVER_BYPASS_INTERNAL_FBUF_P ();
}
static boolean_t
do_short_narrow_pattern (RgnHandle rh, int mode, uint32 v, PixMap *dst,
uint32 fg_color, uint32 bk_color, int log2_bpp,
const rgb_spec_t *rgb_spec, int pat_x_rotate_count)
{
int extra_rot, raw_mode;
uint32 tv, op_color;
RgnPtr r;
vdriver_accel_result_t accel_result;
check_bitmap (dst, CHKR_WO);
extra_rot = setup_dst_bitmap (log2_bpp, dst);
/* Flip the bits if it's a "not" mode. */
if (mode & (patCopy ^ notPatCopy))
v ^= ~0;
/* Set up the xdblt mode for the given QuickDraw mode. */
switch (mode & 3)
{
case (patCopy & 3):
default: /* Not possible to hit default case w/2 bit switch. */
v = (v & fg_color) | ((~v) & bk_color);
if (rgb_spec)
v = (v & rgb_spec->pixel_bits_mask) ^ rgb_spec->xor_mask;
raw_mode = XDBLT_COPY;
break;
case (patXor & 3):
if (rgb_spec)
v &= rgb_spec->pixel_bits_mask;
raw_mode = XDBLT_XOR;
break;
case (patOr & 3):
case (patBic & 3):
if (v == 0 || (rgb_spec && (v & rgb_spec->pixel_bits_mask) == 0))
return FALSE;
op_color = ((mode & 3) == (patOr & 3)) ? fg_color : bk_color;
if (v == (uint32) ~0 || (rgb_spec && v == rgb_spec->white_pixel))
{
/* Just a copy. */
v = op_color;
if (rgb_spec)
v = (v & rgb_spec->pixel_bits_mask) ^ rgb_spec->xor_mask;
raw_mode = XDBLT_COPY;
}
else if ((op_color & v) == v
|| (rgb_spec && op_color == rgb_spec->white_pixel))
{
/* Just an or. */
if (rgb_spec)
v &= rgb_spec->pixel_bits_mask;
raw_mode = XDBLT_OR;
}
else if ((op_color & v) == 0
|| (rgb_spec && op_color == rgb_spec->black_pixel))
{
/* Just an and. */
v ^= ~0;
if (rgb_spec)
v |= ~rgb_spec->pixel_bits_mask;
raw_mode = XDBLT_AND;
}
else /* Tricky case; insert colored bit wherever "v" has a 1 bit. */
{
xdblt_insert_bits = op_color;
if (rgb_spec)
{
xdblt_insert_bits = (rgb_spec->xor_mask
^ (xdblt_insert_bits
& rgb_spec->pixel_bits_mask));
v |= ~rgb_spec->pixel_bits_mask; /* not really necessary. */
}
raw_mode = XDBLT_INSERT;
}
break;
}
if (v == 0)
{
xdblt_stub_table = xdblt_zeros_stubs[raw_mode];
}
else if (v == (uint32) ~0)
{
xdblt_stub_table = xdblt_ones_stubs[raw_mode];
}
else
{
int rcount = ((pat_x_rotate_count << log2_bpp) + extra_rot) & 31;
if (rcount)
RORL (rcount, v);
xdblt_stub_table = xdblt_short_narrow_stubs[raw_mode];
}
xdblt_pattern_value = v;
/* We can only use the accelerated func for solid color patCopy/notPatCopy
* to the screen.
*/
tv = v;
if (log2_bpp < 5)
RORL (1 << log2_bpp, tv);
if (v == tv
&& raw_mode == XDBLT_COPY
&& (r = STARH (rh), r->rgnSize == SMALLRGNX)
&& active_screen_addr_p (dst))
{
int top, left;
top = CW (dst->bounds.top);
left = CW (dst->bounds.left);
accel_result = vdriver_accel_rect_fill
(CW (r->rgnBBox.top) - top, CW (r->rgnBBox.left) - left,
CW (r->rgnBBox.bottom) - top, CW (r->rgnBBox.right) - left,
xdblt_pattern_value & ROMlib_pixel_size_mask[log2_bpp]);
if (accel_result != VDRIVER_ACCEL_NO_UPDATE)
note_executor_changed_screen (CW (r->rgnBBox.top) - top,
CW (r->rgnBBox.bottom) - top);
}
else
accel_result = VDRIVER_ACCEL_NO_UPDATE;
if (accel_result != VDRIVER_ACCEL_FULL_UPDATE)
{
xdblt_log2_bpp = log2_bpp;
xdblt_log2_pattern_row_bytes = 2;
xdblt_pattern_row_0 = 0;
xdblt_pattern_height_minus_1 = 0;
xdblt_pattern_baseaddr = &xdblt_pattern_value;
xdblt_pattern_end = &xdblt_pattern_value + 1;
/* Set up the region appropriately. */
SETUP_SPECIAL_RGN (rh, xdblt_rgn_start);
/* Make sure we have access to the raw screen bits. */
vdriver_accel_wait ();
/* Actually do the blit. */
xdblt_canon_pattern ();
}
return (!VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& accel_result == VDRIVER_ACCEL_NO_UPDATE);
}
static inline uint32
canonicalize_pat_value_for_mode (uint32 v, int mode, uint32 fg_color,
uint32 bk_color, const rgb_spec_t *rgb_spec)
{
if (mode & (patCopy ^ notPatCopy))
v ^= ~0;
switch (mode & 3)
{
case (patCopy & 3):
v = (v & fg_color) | ((~v) & bk_color);
if (rgb_spec)
v = (v & rgb_spec->pixel_bits_mask) ^ rgb_spec->xor_mask;
break;
case (patXor & 3):
if (rgb_spec)
v &= rgb_spec->pixel_bits_mask;
break;
case (patOr & 3):
if (rgb_spec)
v &= rgb_spec->pixel_bits_mask;
break;
case (patBic & 3):
if (bk_color == 0)
v ^= ~0;
else if (rgb_spec)
{
if (bk_color == rgb_spec->black_pixel)
v = ~(v & rgb_spec->pixel_bits_mask); /* Because we can "and" */
else
v &= rgb_spec->pixel_bits_mask;
}
break;
}
return v;
}
boolean_t
xdblt_pattern (RgnHandle rh, int mode,
int pat_x_rotate_count, int pat_y_rotate_count,
const Pattern pattern, PixMap *dst,
uint32 fg_color, uint32 bk_color)
{
uint32 v, mask, tile, *p, *end;
const rgb_spec_t *rgb_spec = NULL;
int log2_bpp;
boolean_t update_dirty_p;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
boolean_t cursor_maybe_changed_p, cursor_vis_p;
#endif
rgb_spec = pixmap_rgb_spec (dst);
/* Tile fg and bk colors out to 32bpp. */
log2_bpp = ROMlib_log2[CW (dst->pixelSize)];
mask = ROMlib_pixel_size_mask[log2_bpp];
tile = ROMlib_pixel_tile_scale[log2_bpp];
fg_color = (fg_color & mask) * tile;
bk_color = (bk_color & mask) * tile;
mode &= 7;
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
/* If we can blit directly to the real screen, change the mode
* appropriately.
*/
if (VDRIVER_BYPASS_INTERNAL_FBUF_P ()
&& active_screen_addr_p (dst))
{
cursor_maybe_changed_p = hide_cursor_if_necessary (rh, dst,
&cursor_vis_p);
}
else
cursor_maybe_changed_p = FALSE;
#endif /* VDRIVER_SUPPORTS_REAL_SCREEN_BLITS */
#if defined (RGB_NEEDS_MODE_MAPPING)
if (rgb_spec)
mode = ind_mode_to_rgb_mode[mode];
#endif
/* See if the pattern is 0x0000000000000000 or 0xFFFFFFFFFFFFFFFF.
* These are _extremely_ common cases.
*/
v = *(const uint32 *)pattern;
if ((v + 1U) <= 1U && v == ((const uint32 *)pattern)[1])
{
update_dirty_p = do_short_narrow_pattern (rh, mode, v, dst, fg_color,
bk_color, log2_bpp,
rgb_spec, pat_x_rotate_count);
}
else
{
xdata_handle_t xh = xdata_for_pattern (pattern, dst);
LOCK_HANDLE_EXCURSION_1
(xh,
{
xdata_t *x = STARH (xh);
p = x->pat_bits;
if (p)
{
int raw_mode;
end = (uint32 *) ((char *) p + x->byte_size);
for (; p != end; p++)
{
/* This is a little slow, but who cares about this
* case? I can easily speed this up later if need be.
*/
*p = canonicalize_pat_value_for_mode (*p, mode, fg_color,
bk_color, rgb_spec);
}
if ((mode & 3) == (patBic & 3)
&& !(bk_color == 0
|| (rgb_spec && bk_color == rgb_spec->black_pixel)))
{
raw_mode = XDBLT_INSERT;
xdblt_insert_bits = bk_color;
}
else if ((mode & 3) == (patOr & 3)
&& !(fg_color == (uint32) ~0
|| (rgb_spec
&& fg_color == rgb_spec->white_pixel)))
{
raw_mode = XDBLT_INSERT;
xdblt_insert_bits = fg_color;
}
else
{
raw_mode = mode & 3;
}
update_dirty_p = (*x->blt_func) (rh, raw_mode | MODE_CANON_BITS,
pat_x_rotate_count,
pat_y_rotate_count, x, dst);
}
else
{
update_dirty_p = do_short_narrow_pattern (rh, mode,
x->pat_value,
dst, fg_color,
bk_color, log2_bpp,
rgb_spec,
pat_x_rotate_count);
}
});
xdata_free (xh);
}
#if defined (VDRIVER_SUPPORTS_REAL_SCREEN_BLITS)
if (cursor_maybe_changed_p)
host_set_cursor_visible (cursor_vis_p);
#endif
return update_dirty_p;
}
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