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drawing.cpp
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drawing.cpp
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//#define XLINECHECK
/*
* UAE - The Un*x Amiga Emulator
*
* Screen drawing functions
*
* Copyright 1995-2000 Bernd Schmidt
* Copyright 1995 Alessandro Bissacco
* Copyright 2000-2008 Toni Wilen
*/
/* There are a couple of concepts of "coordinates" in this file.
- DIW coordinates
- DDF coordinates (essentially cycles, resolution lower than lores by a factor of 2)
- Pixel coordinates
* in the Amiga's resolution as determined by BPLCON0 ("Amiga coordinates")
* in the window resolution as determined by the preferences ("window coordinates").
* in the window resolution, and with the origin being the topmost left corner of
the window ("native coordinates")
One note about window coordinates. The visible area depends on the width of the
window, and the centering code. The first visible horizontal window coordinate is
often _not_ 0, but the value of VISIBLE_LEFT_BORDER instead.
One important thing to remember: DIW coordinates are in the lowest possible
resolution.
To prevent extremely bad things (think pixels cut in half by window borders) from
happening, all ports should restrict window widths to be multiples of 16 pixels. */
#include "sysconfig.h"
#include "sysdeps.h"
#include <ctype.h>
#include <assert.h>
#include "options.h"
#include "threaddep/thread.h"
#include "uae.h"
#include "memory.h"
#include "custom.h"
#include "newcpu.h"
#include "xwin.h"
#include "autoconf.h"
#include "gui.h"
#include "picasso96.h"
#include "drawing.h"
#include "savestate.h"
#include "statusline.h"
#include "inputdevice.h"
#include "debug.h"
extern int sprite_buffer_res;
int lores_factor, lores_shift;
int debug_bpl_mask = 0xff, debug_bpl_mask_one;
static void lores_reset (void)
{
lores_factor = currprefs.gfx_resolution ? 2 : 1;
lores_shift = currprefs.gfx_resolution;
if (doublescan > 0) {
if (lores_shift < 2)
lores_shift++;
lores_factor = 2;
}
sprite_buffer_res = currprefs.gfx_resolution;
if (doublescan > 0 && sprite_buffer_res < RES_SUPERHIRES)
sprite_buffer_res++;
}
bool aga_mode; /* mirror of chipset_mask & CSMASK_AGA */
bool direct_rgb;
/* The shift factor to apply when converting between Amiga coordinates and window
coordinates. Zero if the resolution is the same, positive if window coordinates
have a higher resolution (i.e. we're stretching the image), negative if window
coordinates have a lower resolution (i.e. we're shrinking the image). */
static int res_shift;
static int linedbl, linedbld;
int interlace_seen = 0;
#define AUTO_LORES_FRAMES 10
static int can_use_lores = 0, frame_res, frame_res_lace, last_max_ypos;
/* Lookup tables for dual playfields. The dblpf_*1 versions are for the case
that playfield 1 has the priority, dbplpf_*2 are used if playfield 2 has
priority. If we need an array for non-dual playfield mode, it has no number. */
/* The dbplpf_ms? arrays contain a shift value. plf_spritemask is initialized
to contain two 16 bit words, with the appropriate mask if pf1 is in the
foreground being at bit offset 0, the one used if pf2 is in front being at
offset 16. */
static int dblpf_ms1[256], dblpf_ms2[256], dblpf_ms[256];
static int dblpf_ind1[256], dblpf_ind2[256];
static int dblpf_2nd1[256], dblpf_2nd2[256];
static int dblpfofs[] = { 0, 2, 4, 8, 16, 32, 64, 128 };
static int sprite_offs[256];
static uae_u32 clxtab[256];
/* Video buffer description structure. Filled in by the graphics system
* dependent code. */
struct vidbuf_description gfxvidinfo;
/* OCS/ECS color lookup table. */
xcolnr xcolors[4096];
struct spritepixelsbuf {
uae_u8 attach;
uae_u8 stdata;
uae_u16 data;
};
static struct spritepixelsbuf spritepixels[MAX_PIXELS_PER_LINE];
static int sprite_first_x, sprite_last_x;
#ifdef AGA
/* AGA mode color lookup tables */
unsigned int xredcolors[256], xgreencolors[256], xbluecolors[256];
static int dblpf_ind1_aga[256], dblpf_ind2_aga[256];
#else
static uae_u8 spriteagadpfpixels[1];
static int dblpf_ind1_aga[1], dblpf_ind2_aga[1];
#endif
int xredcolor_s, xredcolor_b, xredcolor_m;
int xgreencolor_s, xgreencolor_b, xgreencolor_m;
int xbluecolor_s, xbluecolor_b, xbluecolor_m;
struct color_entry colors_for_drawing;
/* The size of these arrays is pretty arbitrary; it was chosen to be "more
than enough". The coordinates used for indexing into these arrays are
almost, but not quite, Amiga coordinates (there's a constant offset). */
union {
/* Let's try to align this thing. */
double uupzuq;
long int cruxmedo;
uae_u8 apixels[MAX_PIXELS_PER_LINE * 2];
uae_u16 apixels_w[MAX_PIXELS_PER_LINE * 2 / sizeof (uae_u16)];
uae_u32 apixels_l[MAX_PIXELS_PER_LINE * 2 / sizeof (uae_u32)];
} pixdata;
#ifdef OS_WITHOUT_MEMORY_MANAGEMENT
uae_u16 *spixels;
#else
uae_u16 spixels[2 * MAX_SPR_PIXELS];
#endif
/* Eight bits for every pixel. */
union sps_union spixstate;
static uae_u32 ham_linebuf[MAX_PIXELS_PER_LINE * 2];
static uae_u8 *real_bplpt[8];
static uae_u8 all_ones[MAX_PIXELS_PER_LINE];
static uae_u8 all_zeros[MAX_PIXELS_PER_LINE];
uae_u8 *xlinebuffer;
static int *amiga2aspect_line_map, *native2amiga_line_map;
static uae_u8 *row_map[MAX_VIDHEIGHT + 1];
static uae_u8 row_tmp[MAX_PIXELS_PER_LINE * 32 / 8];
static int max_drawn_amiga_line;
/* line_draw_funcs: pfield_do_linetoscr, pfield_do_fill_line, decode_ham */
typedef void (*line_draw_func)(int, int);
#define LINE_UNDECIDED 1
#define LINE_DECIDED 2
#define LINE_DECIDED_DOUBLE 3
#define LINE_AS_PREVIOUS 4
#define LINE_BLACK 5
#define LINE_REMEMBERED_AS_BLACK 6
#define LINE_DONE 7
#define LINE_DONE_AS_PREVIOUS 8
#define LINE_REMEMBERED_AS_PREVIOUS 9
static uae_u8 linestate[(MAXVPOS + 2) * 2 + 1];
uae_u8 line_data[(MAXVPOS + 2) * 2][MAX_PLANES * MAX_WORDS_PER_LINE * 2];
/* Centering variables. */
static int min_diwstart, max_diwstop;
/* The visible window: VISIBLE_LEFT_BORDER contains the left border of the visible
area, VISIBLE_RIGHT_BORDER the right border. These are in window coordinates. */
int visible_left_border, visible_right_border;
static int linetoscr_x_adjust_bytes;
static int thisframe_y_adjust;
static int thisframe_y_adjust_real, max_ypos_thisframe, min_ypos_for_screen;
static int extra_y_adjust;
int thisframe_first_drawn_line, thisframe_last_drawn_line;
/* A frame counter that forces a redraw after at least one skipped frame in
interlace mode. */
static int last_redraw_point;
static int first_drawn_line, last_drawn_line;
static int first_block_line, last_block_line;
#define NO_BLOCK -3
/* These are generated by the drawing code from the line_decisions array for
each line that needs to be drawn. These are basically extracted out of
bit fields in the hardware registers. */
static int bplehb, bplham, bpldualpf, bpldualpfpri, bpldualpf2of, bplplanecnt, ecsshres, issprites;
static int bplres;
static int plf1pri, plf2pri, bplxor;
static uae_u32 plf_sprite_mask;
static int sbasecol[2] = { 16, 16 };
static int brdsprt, brdblank, brdblank_changed, hposendblank;
bool picasso_requested_on;
bool picasso_on;
uae_sem_t gui_sem;
int inhibit_frame;
int framecnt = 0;
static int frame_redraw_necessary;
static int picasso_redraw_necessary;
#ifdef XLINECHECK
static void xlinecheck (unsigned int start, unsigned int end)
{
unsigned int xstart = (unsigned int)xlinebuffer + start * gfxvidinfo.pixbytes;
unsigned int xend = (unsigned int)xlinebuffer + end * gfxvidinfo.pixbytes;
unsigned int end1 = (unsigned int)gfxvidinfo.bufmem + gfxvidinfo.rowbytes * gfxvidinfo.height;
int min = linetoscr_x_adjust_bytes / gfxvidinfo.pixbytes;
int ok = 1;
if (xstart >= gfxvidinfo.emergmem && xstart < gfxvidinfo.emergmem + 4096 * gfxvidinfo.pixbytes &&
xend >= gfxvidinfo.emergmem && xend < gfxvidinfo.emergmem + 4096 * gfxvidinfo.pixbytes)
return;
if (xstart < (unsigned int)gfxvidinfo.bufmem || xend < (unsigned int)gfxvidinfo.bufmem)
ok = 0;
if (xend > end1 || xstart >= end1)
ok = 0;
xstart -= (unsigned int)gfxvidinfo.bufmem;
xend -= (unsigned int)gfxvidinfo.bufmem;
if ((xstart % gfxvidinfo.rowbytes) >= gfxvidinfo.width * gfxvidinfo.pixbytes)
ok = 0;
if ((xend % gfxvidinfo.rowbytes) >= gfxvidinfo.width * gfxvidinfo.pixbytes)
ok = 0;
if (xstart >= xend)
ok = 0;
if (xend - xstart > gfxvidinfo.width * gfxvidinfo.pixbytes)
ok = 0;
if (!ok) {
write_log (L"*** %d-%d (%dx%dx%d %d) %p\n",
start - min, end - min, gfxvidinfo.width, gfxvidinfo.height,
gfxvidinfo.pixbytes, gfxvidinfo.rowbytes,
xlinebuffer);
}
}
#else
#define xlinecheck
#endif
STATIC_INLINE void count_frame (void)
{
framecnt++;
if (framecnt >= currprefs.gfx_framerate)
framecnt = 0;
if (inhibit_frame)
framecnt = 1;
}
STATIC_INLINE int xshift (int x, int shift)
{
if (shift < 0)
return x >> (-shift);
else
return x << shift;
}
int coord_native_to_amiga_x (int x)
{
x += visible_left_border;
x = xshift (x, 1 - lores_shift);
return x + 2 * DISPLAY_LEFT_SHIFT - 2 * DIW_DDF_OFFSET;
}
int coord_native_to_amiga_y (int y)
{
return native2amiga_line_map[y] + thisframe_y_adjust - minfirstline;
}
STATIC_INLINE int res_shift_from_window (int x)
{
if (res_shift >= 0)
return x >> res_shift;
return x << -res_shift;
}
STATIC_INLINE int res_shift_from_amiga (int x)
{
if (res_shift >= 0)
return x >> res_shift;
return x << -res_shift;
}
void notice_screen_contents_lost (void)
{
picasso_redraw_necessary = 1;
frame_redraw_necessary = 2;
}
extern int plffirstline_total, plflastline_total;
extern int first_planes_vpos, last_planes_vpos;
extern int diwfirstword_total, diwlastword_total;
extern int ddffirstword_total, ddflastword_total;
extern int firstword_bplcon1;
#define MIN_DISPLAY_W 256
#define MIN_DISPLAY_H 192
#define MAX_DISPLAY_W 352
#define MAX_DISPLAY_H 276
static int gclow, gcloh, gclox, gcloy;
static void reset_custom_limits (void)
{
gclow = gcloh = gclox = gcloy = 0;
}
int get_custom_limits (int *pw, int *ph, int *pdx, int *pdy)
{
int w, h, dx, dy, y1, y2, dbl1, dbl2;
int ret = 0;
if (!pw || !ph || !pdx || !pdy) {
reset_custom_limits ();
return 0;
}
*pw = gclow;
*ph = gcloh;
*pdx = gclox;
*pdy = gcloy;
if (gclow > 0 && gcloh > 0)
ret = -1;
if (doublescan <= 0) {
int min = coord_diw_to_window_x (94);
int max = coord_diw_to_window_x (460);
if (diwfirstword_total < min)
diwfirstword_total = min;
if (diwlastword_total > max)
diwlastword_total = max;
ddffirstword_total = coord_hw_to_window_x (ddffirstword_total * 2 + DIW_DDF_OFFSET);
ddflastword_total = coord_hw_to_window_x (ddflastword_total * 2 + DIW_DDF_OFFSET);
if (ddffirstword_total < min)
ddffirstword_total = min;
if (ddflastword_total > max)
ddflastword_total = max;
if (0 && !(currprefs.chipset_mask & CSMASK_AGA)) {
if (ddffirstword_total > diwfirstword_total)
diwfirstword_total = ddffirstword_total;
if (ddflastword_total < diwlastword_total)
diwlastword_total = ddflastword_total;
}
}
w = diwlastword_total - diwfirstword_total;
dx = diwfirstword_total - visible_left_border;
y2 = plflastline_total;
if (y2 > last_planes_vpos)
y2 = last_planes_vpos;
y1 = plffirstline_total;
if (first_planes_vpos > y1)
y1 = first_planes_vpos;
if (minfirstline > y1)
y1 = minfirstline;
dbl2 = dbl1 = currprefs.gfx_vresolution;
if (doublescan > 0 && interlace_seen <= 0) {
dbl1--;
dbl2--;
}
h = y2 - y1;
dy = y1 - minfirstline;
if (first_planes_vpos == 0) {
// no planes enabled during frame
if (ret < 0)
return 1;
h = currprefs.ntscmode ? 200 : 240;
w = 320 << currprefs.gfx_resolution;
dy = 36 / 2;
dx = 58;
}
if (dx < 0)
dx = 1;
dy = xshift (dy, dbl2);
h = xshift (h, dbl1);
if (w == 0 || h == 0)
return 0;
if (doublescan <= 0) {
if ((w >> currprefs.gfx_resolution) < MIN_DISPLAY_W) {
dx += (w - (MIN_DISPLAY_W << currprefs.gfx_resolution)) / 2;
w = MIN_DISPLAY_W << currprefs.gfx_resolution;
}
if ((h >> dbl1) < MIN_DISPLAY_H) {
dy += (h - (MIN_DISPLAY_H << dbl1)) / 2;
h = MIN_DISPLAY_H << dbl1;
}
if ((w >> currprefs.gfx_resolution) > MAX_DISPLAY_W) {
dx += (w - (MAX_DISPLAY_W << currprefs.gfx_resolution)) / 2;
w = MAX_DISPLAY_W << currprefs.gfx_resolution;
}
if ((h >> dbl1) > MAX_DISPLAY_H) {
dy += (h - (MAX_DISPLAY_H << dbl1)) / 2;
h = MAX_DISPLAY_H << dbl1;
}
}
if (gclow == w && gcloh == h && gclox == dx && gcloy == dy)
return ret;
if (w <= 0 || h <= 0 || dx <= 0 || dy <= 0)
return ret;
if (doublescan <= 0) {
if (dx > gfxvidinfo.width / 3)
return ret;
if (dy > gfxvidinfo.height / 3)
return ret;
}
gclow = w;
gcloh = h;
gclox = dx;
gcloy = dy;
*pw = w;
*ph = h;
*pdx = dx;
*pdy = dy;
write_log (L"Display Size: %dx%d Offset: %dx%d\n", w, h, dx, dy);
write_log (L"First: %d Last: %d MinV: %d MaxV: %d Min: %d\n",
plffirstline_total, plflastline_total,
first_planes_vpos, last_planes_vpos, minfirstline);
return 1;
}
void get_custom_mouse_limits (int *pw, int *ph, int *pdx, int *pdy, int dbl)
{
int delay1, delay2;
int w, h, dx, dy, dbl1, dbl2, y1, y2;
w = diwlastword_total - diwfirstword_total;
dx = diwfirstword_total - visible_left_border;
y2 = plflastline_total;
if (y2 > last_planes_vpos)
y2 = last_planes_vpos;
y1 = plffirstline_total;
if (first_planes_vpos > y1)
y1 = first_planes_vpos;
if (minfirstline > y1)
y1 = minfirstline;
h = y2 - y1;
dy = y1 - minfirstline;
if (*pw > 0)
w = *pw;
w = xshift (w, res_shift);
if (*ph > 0)
h = *ph;
delay1 = (firstword_bplcon1 & 0x0f) | ((firstword_bplcon1 & 0x0c00) >> 6);
delay2 = ((firstword_bplcon1 >> 4) & 0x0f) | (((firstword_bplcon1 >> 4) & 0x0c00) >> 6);
if (delay1 == delay2)
;//dx += delay1;
dx = xshift (dx, res_shift);
dbl2 = dbl1 = currprefs.gfx_vresolution;
if ((doublescan > 0 || interlace_seen > 0) && !dbl) {
dbl1--;
dbl2--;
}
if (interlace_seen > 0)
dbl2++;
if (interlace_seen <= 0 && dbl)
dbl2--;
h = xshift (h, dbl1);
dy = xshift (dy, dbl2);
if (w < 1)
w = 1;
if (h < 1)
h = 1;
if (dx < 0)
dx = 0;
if (dy < 0)
dy = 0;
*pw = w; *ph = h;
*pdx = dx; *pdy = dy;
}
static struct decision *dp_for_drawing;
static struct draw_info *dip_for_drawing;
/* Record DIW of the current line for use by centering code. */
void record_diw_line (int plfstrt, int first, int last)
{
if (last > max_diwstop)
max_diwstop = last;
if (first < min_diwstart) {
min_diwstart = first;
/*
if (plfstrt * 2 > min_diwstart)
min_diwstart = plfstrt * 2;
*/
}
}
/*
* Screen update macros/functions
*/
/* The important positions in the line: where do we start drawing the left border,
where do we start drawing the playfield, where do we start drawing the right border.
All of these are forced into the visible window (VISIBLE_LEFT_BORDER .. VISIBLE_RIGHT_BORDER).
PLAYFIELD_START and PLAYFIELD_END are in window coordinates. */
static int playfield_start, playfield_end;
static int real_playfield_start, real_playfield_end;
static int linetoscr_diw_start, linetoscr_diw_end;
static int native_ddf_left, native_ddf_right;
static int pixels_offset;
static int src_pixel, ham_src_pixel;
/* How many pixels in window coordinates which are to the left of the left border. */
static int unpainted;
static int seen_sprites;
/* Initialize the variables necessary for drawing a line.
* This involves setting up start/stop positions and display window
* borders. */
static void pfield_init_linetoscr (void)
{
/* First, get data fetch start/stop in DIW coordinates. */
int ddf_left = dp_for_drawing->plfleft * 2 + DIW_DDF_OFFSET;
int ddf_right = dp_for_drawing->plfright * 2 + DIW_DDF_OFFSET;
/* Compute datafetch start/stop in pixels; native display coordinates. */
native_ddf_left = coord_hw_to_window_x (ddf_left);
native_ddf_right = coord_hw_to_window_x (ddf_right);
linetoscr_diw_start = dp_for_drawing->diwfirstword;
linetoscr_diw_end = dp_for_drawing->diwlastword;
res_shift = lores_shift - bplres;
if (dip_for_drawing->nr_sprites == 0) {
if (linetoscr_diw_start < native_ddf_left)
linetoscr_diw_start = native_ddf_left;
if (linetoscr_diw_end > native_ddf_right)
linetoscr_diw_end = native_ddf_right;
}
/* Perverse cases happen. */
if (linetoscr_diw_end < linetoscr_diw_start)
linetoscr_diw_end = linetoscr_diw_start;
playfield_start = linetoscr_diw_start;
playfield_end = linetoscr_diw_end;
unpainted = visible_left_border < playfield_start ? 0 : visible_left_border - playfield_start;
ham_src_pixel = MAX_PIXELS_PER_LINE + res_shift_from_window (playfield_start - native_ddf_left);
unpainted = res_shift_from_window (unpainted);
if (playfield_start < visible_left_border)
playfield_start = visible_left_border;
if (playfield_start > visible_right_border)
playfield_start = visible_right_border;
if (playfield_end < visible_left_border)
playfield_end = visible_left_border;
if (playfield_end > visible_right_border)
playfield_end = visible_right_border;
real_playfield_end = playfield_end;
real_playfield_start = playfield_start;
#ifdef AGA
if (brdsprt && dip_for_drawing->nr_sprites) {
int min = visible_right_border, max = visible_left_border, i;
for (i = 0; i < dip_for_drawing->nr_sprites; i++) {
int x;
x = curr_sprite_entries[dip_for_drawing->first_sprite_entry + i].pos;
if (x < min)
min = x;
x = curr_sprite_entries[dip_for_drawing->first_sprite_entry + i].max;
if (x > max)
max = x;
}
min = coord_hw_to_window_x (min >> sprite_buffer_res) + (DIW_DDF_OFFSET << lores_shift);
max = coord_hw_to_window_x (max >> sprite_buffer_res) + (DIW_DDF_OFFSET << lores_shift);
if (min < playfield_start)
playfield_start = min;
if (playfield_start < visible_left_border)
playfield_start = visible_left_border;
if (max > playfield_end)
playfield_end = max;
if (playfield_end > visible_right_border)
playfield_end = visible_right_border;
}
#endif
if (sprite_first_x < sprite_last_x) {
if (sprite_first_x < 0)
sprite_first_x = 0;
if (sprite_last_x >= MAX_PIXELS_PER_LINE - 1)
sprite_last_x = MAX_PIXELS_PER_LINE - 2;
if (sprite_first_x < sprite_last_x)
memset (spritepixels + sprite_first_x, 0, sizeof (struct spritepixelsbuf) * (sprite_last_x - sprite_first_x + 1));
}
sprite_last_x = 0;
sprite_first_x = MAX_PIXELS_PER_LINE - 1;
/* Now, compute some offsets. */
ddf_left -= DISPLAY_LEFT_SHIFT;
pixels_offset = MAX_PIXELS_PER_LINE - (ddf_left << bplres);
ddf_left <<= bplres;
src_pixel = MAX_PIXELS_PER_LINE + res_shift_from_window (playfield_start - native_ddf_left);
seen_sprites = 0;
if (dip_for_drawing->nr_sprites == 0)
return;
seen_sprites = 1;
/* Must clear parts of apixels. */
if (linetoscr_diw_start < native_ddf_left) {
int size = res_shift_from_window (native_ddf_left - linetoscr_diw_start);
linetoscr_diw_start = native_ddf_left;
memset (pixdata.apixels + MAX_PIXELS_PER_LINE - size, 0, size);
}
if (linetoscr_diw_end > native_ddf_right) {
int pos = res_shift_from_window (native_ddf_right - native_ddf_left);
int size = res_shift_from_window (linetoscr_diw_end - native_ddf_right);
linetoscr_diw_start = native_ddf_left;
memset (pixdata.apixels + MAX_PIXELS_PER_LINE + pos, 0, size);
}
}
STATIC_INLINE uae_u16 merge_2pixel16 (uae_u16 p1, uae_u16 p2)
{
uae_u16 v = ((((p1 >> xredcolor_s) & xredcolor_m) + ((p2 >> xredcolor_s) & xredcolor_m)) / 2) << xredcolor_s;
v |= ((((p1 >> xbluecolor_s) & xbluecolor_m) + ((p2 >> xbluecolor_s) & xbluecolor_m)) / 2) << xbluecolor_s;
v |= ((((p1 >> xgreencolor_s) & xgreencolor_m) + ((p2 >> xgreencolor_s) & xgreencolor_m)) / 2) << xgreencolor_s;
return v;
}
STATIC_INLINE uae_u32 merge_2pixel32 (uae_u32 p1, uae_u32 p2)
{
uae_u32 v = ((((p1 >> 16) & 0xff) + ((p2 >> 16) & 0xff)) / 2) << 16;
v |= ((((p1 >> 8) & 0xff) + ((p2 >> 8) & 0xff)) / 2) << 8;
v |= ((((p1 >> 0) & 0xff) + ((p2 >> 0) & 0xff)) / 2) << 0;
return v;
}
STATIC_INLINE xcolnr getbgc (void)
{
#if 0
if (hposendblank)
return xcolors[0xf00];
#endif
return (brdblank || hposendblank) ? 0 : colors_for_drawing.acolors[0];
}
static void fill_line_16 (uae_u8 *buf, unsigned int start, unsigned int stop)
{
uae_u16 *b = (uae_u16 *)buf;
unsigned int i;
unsigned int rem = 0;
xcolnr col = getbgc ();
if (((long)&b[start]) & 1)
b[start++] = (uae_u16) col;
if (start >= stop)
return;
if (((long)&b[stop]) & 1) {
rem++;
stop--;
}
for (i = start; i < stop; i += 2) {
uae_u32 *b2 = (uae_u32 *)&b[i];
*b2 = col;
}
if (rem)
b[stop] = (uae_u16)col;
}
static void fill_line_32 (uae_u8 *buf, unsigned int start, unsigned int stop)
{
uae_u32 *b = (uae_u32 *)buf;
unsigned int i;
xcolnr col = getbgc ();
for (i = start; i < stop; i++)
b[i] = col;
}
static void pfield_do_fill_line (int start, int stop)
{
xlinecheck(start, stop);
switch (gfxvidinfo.pixbytes) {
case 2: fill_line_16 (xlinebuffer, start, stop); break;
case 4: fill_line_32 (xlinebuffer, start, stop); break;
}
}
STATIC_INLINE void fill_line2 (int startpos, int len)
{
int shift;
int nints, nrem;
int *start;
xcolnr val;
shift = 0;
if (gfxvidinfo.pixbytes == 2)
shift = 1;
if (gfxvidinfo.pixbytes == 4)
shift = 2;
nints = len >> (2 - shift);
nrem = nints & 7;
nints &= ~7;
start = (int *)(((uae_u8*)xlinebuffer) + (startpos << shift));
val = getbgc ();
for (; nints > 0; nints -= 8, start += 8) {
*start = val;
*(start+1) = val;
*(start+2) = val;
*(start+3) = val;
*(start+4) = val;
*(start+5) = val;
*(start+6) = val;
*(start+7) = val;
}
switch (nrem) {
case 7:
*start++ = val;
case 6:
*start++ = val;
case 5:
*start++ = val;
case 4:
*start++ = val;
case 3:
*start++ = val;
case 2:
*start++ = val;
case 1:
*start = val;
}
}
static void fill_line (void)
{
int hs = coord_hw_to_window_x (hsyncstartpos * 2);
if (hs > visible_left_border + gfxvidinfo.width || hposendblank) {
fill_line2 (visible_left_border, gfxvidinfo.width);
} else {
fill_line2 (visible_left_border, hs);
hposendblank = 1;
fill_line2 (visible_left_border + hs, gfxvidinfo.width - hs);
}
}
#define SPRITE_DEBUG 0
STATIC_INLINE uae_u8 render_sprites (int pos, int dualpf, uae_u8 apixel, int aga)
{
struct spritepixelsbuf *spb = &spritepixels[pos];
unsigned int v = spb->data;
int *shift_lookup = dualpf ? (bpldualpfpri ? dblpf_ms2 : dblpf_ms1) : dblpf_ms;
int maskshift, plfmask;
/* The value in the shift lookup table is _half_ the shift count we
need. This is because we can't shift 32 bits at once (undefined
behaviour in C). */
maskshift = shift_lookup[apixel];
plfmask = (plf_sprite_mask >> maskshift) >> maskshift;
v &= ~plfmask;
if (v != 0 || SPRITE_DEBUG) {
unsigned int vlo, vhi, col;
unsigned int v1 = v & 255;
/* OFFS determines the sprite pair with the highest priority that has
any bits set. E.g. if we have 0xFF00 in the buffer, we have sprite
pairs 01 and 23 cleared, and pairs 45 and 67 set, so OFFS will
have a value of 4.
2 * OFFS is the bit number in V of the sprite pair, and it also
happens to be the color offset for that pair.
*/
int offs;
if (v1 == 0)
offs = 4 + sprite_offs[v >> 8];
else
offs = sprite_offs[v1];
/* Shift highest priority sprite pair down to bit zero. */
v >>= offs * 2;
v &= 15;
#if SPRITE_DEBUG > 0
v ^= 8;
#endif
if (spb->attach && (spb->stdata & (3 << offs))) {
col = v;
if (aga)
col += sbasecol[1];
else
col += 16;
} else {
/* This sequence computes the correct color value. We have to select
either the lower-numbered or the higher-numbered sprite in the pair.
We have to select the high one if the low one has all bits zero.
If the lower-numbered sprite has any bits nonzero, (VLO - 1) is in
the range of 0..2, and with the mask and shift, VHI will be zero.
If the lower-numbered sprite is zero, (VLO - 1) is a mask of
0xFFFFFFFF, and we select the bits of the higher numbered sprite
in VHI.
This is _probably_ more efficient than doing it with branches. */
vlo = v & 3;
vhi = (v & (vlo - 1)) >> 2;
col = (vlo | vhi);
if (aga) {
if (vhi > 0)
col += sbasecol[1];
else
col += sbasecol[0];
} else {
col += 16;
}
col += offs * 2;
}
return col;
}
return 0;
}
#include "linetoscr.cpp"
#ifdef ECS_DENISE
/* ECS SuperHires special cases */
STATIC_INLINE uae_u32 shsprite (int dpix, uae_u32 spix_val, uae_u32 v, int spr)
{
uae_u8 sprcol;
if (!spr)
return v;
sprcol = render_sprites (dpix, 0, spix_val, 0);
if (sprcol)
return colors_for_drawing.color_regs_ecs[sprcol];
return v;
}
static int NOINLINE linetoscr_16_sh (int spix, int dpix, int stoppos, int spr)
{
uae_u16 *buf = (uae_u16 *) xlinebuffer;
while (dpix < stoppos) {
uae_u16 spix_val1, spix_val2;
uae_u16 v;
int off;
spix_val1 = pixdata.apixels[spix++];
spix_val2 = pixdata.apixels[spix++];
off = ((spix_val2 & 3) * 4) + (spix_val1 & 3) + ((spix_val1 | spix_val2) & 16);
v = (colors_for_drawing.color_regs_ecs[off] & 0xccc) << 0;
v |= v >> 2;
buf[dpix] = shsprite (dpix, spix_val1, xcolors[v], spr);
dpix++;
v = (colors_for_drawing.color_regs_ecs[off] & 0x333) << 2;
v |= v >> 2;
buf[dpix] = shsprite (dpix, spix_val2, xcolors[v], spr);
dpix++;
}
return spix;
}
static int NOINLINE linetoscr_32_sh (int spix, int dpix, int stoppos, int spr)
{
uae_u32 *buf = (uae_u32 *) xlinebuffer;
while (dpix < stoppos) {
uae_u32 spix_val1, spix_val2;
uae_u16 v;
int off;
spix_val1 = pixdata.apixels[spix++];
spix_val2 = pixdata.apixels[spix++];
off = ((spix_val2 & 3) * 4) + (spix_val1 & 3) + ((spix_val1 | spix_val2) & 16);
v = (colors_for_drawing.color_regs_ecs[off] & 0xccc) << 0;
v |= v >> 2;
buf[dpix] = shsprite (dpix, spix_val1, xcolors[v], spr);
dpix++;
v = (colors_for_drawing.color_regs_ecs[off] & 0x333) << 2;
v |= v >> 2;
buf[dpix] = shsprite (dpix, spix_val2, xcolors[v], spr);
dpix++;
}
return spix;
}
static int NOINLINE linetoscr_32_shrink1_sh (int spix, int dpix, int stoppos, int spr)
{
uae_u32 *buf = (uae_u32 *) xlinebuffer;
while (dpix < stoppos) {
uae_u32 spix_val1, spix_val2;
uae_u16 v;
int off;
spix_val1 = pixdata.apixels[spix++];
spix_val2 = pixdata.apixels[spix++];
off = ((spix_val2 & 3) * 4) + (spix_val1 & 3) + ((spix_val1 | spix_val2) & 16);
v = (colors_for_drawing.color_regs_ecs[off] & 0xccc) << 0;
v |= v >> 2;
buf[dpix] = shsprite (dpix, spix_val1, xcolors[v], spr);
dpix++;
}
return spix;
}
static int NOINLINE linetoscr_32_shrink1f_sh (int spix, int dpix, int stoppos, int spr)
{
uae_u32 *buf = (uae_u32 *) xlinebuffer;
while (dpix < stoppos) {
uae_u32 spix_val1, spix_val2, dpix_val1, dpix_val2;
uae_u16 v;
int off;
spix_val1 = pixdata.apixels[spix++];
spix_val2 = pixdata.apixels[spix++];
off = ((spix_val2 & 3) * 4) + (spix_val1 & 3) + ((spix_val1 | spix_val2) & 16);
v = (colors_for_drawing.color_regs_ecs[off] & 0xccc) << 0;
v |= v >> 2;
dpix_val1 = xcolors[v];
v = (colors_for_drawing.color_regs_ecs[off] & 0x333) << 2;
v |= v >> 2;
dpix_val2 = xcolors[v];
buf[dpix] = shsprite (dpix, spix_val1, merge_2pixel32 (dpix_val1, dpix_val2), spr);
dpix++;
}
return spix;
}
static int NOINLINE linetoscr_16_shrink1_sh (int spix, int dpix, int stoppos, int spr)
{
uae_u16 *buf = (uae_u16 *) xlinebuffer;
while (dpix < stoppos) {
uae_u16 spix_val1, spix_val2;
uae_u16 v;
int off;
spix_val1 = pixdata.apixels[spix++];
spix_val2 = pixdata.apixels[spix++];
off = ((spix_val2 & 3) * 4) + (spix_val1 & 3) + ((spix_val1 | spix_val2) & 16);
v = (colors_for_drawing.color_regs_ecs[off] & 0xccc) << 0;
v |= v >> 2;
buf[dpix] = shsprite (dpix, spix_val1, xcolors[v], spr);
dpix++;
}
return spix;
}
static int NOINLINE linetoscr_16_shrink1f_sh (int spix, int dpix, int stoppos, int spr)
{
uae_u16 *buf = (uae_u16 *) xlinebuffer;
while (dpix < stoppos) {
uae_u16 spix_val1, spix_val2, dpix_val1, dpix_val2;
uae_u16 v;
int off;
spix_val1 = pixdata.apixels[spix++];
spix_val2 = pixdata.apixels[spix++];
off = ((spix_val2 & 3) * 4) + (spix_val1 & 3) + ((spix_val1 | spix_val2) & 16);
v = (colors_for_drawing.color_regs_ecs[off] & 0xccc) << 0;
v |= v >> 2;
dpix_val1 = xcolors[v];
v = (colors_for_drawing.color_regs_ecs[off] & 0x333) << 2;
v |= v >> 2;
dpix_val2 = xcolors[v];
buf[dpix] = shsprite (dpix, spix_val1, merge_2pixel16 (dpix_val1, dpix_val2), spr);
dpix++;
}
return spix;
}
static int NOINLINE linetoscr_32_shrink2_sh (int spix, int dpix, int stoppos, int spr)