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// license:BSD-3-Clause
// copyright-holders:Luca Elia, David Haywood
/*
*/
#include "emu.h"
#include "fuukifg.h"
#include "screen.h"
DEFINE_DEVICE_TYPE(FUUKI_VIDEO, fuukivid_device, "fuukivid", "Fuuki Video")
fuukivid_device::fuukivid_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, FUUKI_VIDEO, tag, owner, clock)
, device_gfx_interface(mconfig, *this, nullptr)
, device_video_interface(mconfig, *this)
, m_tile_cb(*this)
, m_colpri_cb(*this)
, m_gfx_region(*this, DEVICE_SELF)
, m_colbase(0)
, m_colnum(0x100)
{
}
void fuukivid_device::device_start()
{
/* 16x16x4 */
gfx_layout layout_16x16x4 =
{
16,16,
0,
4,
{ STEP4(0,1) },
{ STEP16(0,4) },
{ STEP16(0,16*4) },
16*16*4
};
layout_16x16x4.total = m_gfx_region->bytes() / ((16*16*4) / 8);
m_tile_cb.resolve();
m_colpri_cb.resolve();
set_gfx(0, std::make_unique<gfx_element>(&palette(), layout_16x16x4, m_gfx_region->base(), 0, m_colnum, m_colbase));
}
void fuukivid_device::device_reset()
{
}
/***************************************************************************
Sprites Drawing
Offset: Bits: Value:
0.w fedc ---- ---- ---- Number Of Tiles Along X - 1
---- b--- ---- ---- Flip X
---- -a-- ---- ---- 1 = Don't Draw This Sprite
---- --98 7654 3210 X (Signed)
2.w fedc ---- ---- ---- Number Of Tiles Along Y - 1
---- b--- ---- ---- Flip Y
---- -a-- ---- ----
---- --98 7654 3210 Y (Signed)
4.w fedc ---- ---- ---- Zoom X ($0 = Full Size, $F = Half Size)
---- ba98 ---- ---- Zoom Y ""
---- ---- 76-- ---- Priority
---- ---- --54 3210 Color
6.w Tile Code
for FG3 hardware
6.w fe-- ---- ---- ---- Tile Bank
--dc ba98 7654 3210 Tile Code
***************************************************************************/
void fuukivid_device::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, bool flip_screen, u16 *spriteram, u32 size)
{
// as we're likely framebuffered (sprites are delayed by 2-3 frames, at least on FG3, and doing rasters on sprites causes glitches) we
// only draw the sprites when MAME wants to draw the final screen line. Ideally we should framebuffer them instead.
if (cliprect.max_y != screen.visible_area().max_y)
return;
const bool tilebank = !m_tile_cb.isnull();
const bool priority = !m_colpri_cb.isnull();
const rectangle spriteclip = screen.visible_area();
const int max_x = spriteclip.max_x + 1;
const int max_y = spriteclip.max_y + 1;
int start, end, inc;
if (priority) { start = size - 4; end = -4; inc = -4; }
else { start = 0; end = size; inc = +4; }
/* Draw them backwards, for pdrawgfx */
for (int offs = start; offs != end; offs += inc)
{
const u16 data0 = spriteram[offs + 0];
const u16 data1 = spriteram[offs + 1];
const u16 attr = spriteram[offs + 2];
u32 code = spriteram[offs + 3];
if (tilebank)
m_tile_cb(code);
if (data0 & 0x400)
continue;
int flipx = data0 & 0x0800;
int flipy = data1 & 0x0800;
const int xnum = ((data0 >> 12) & 0xf) + 1;
const int ynum = ((data1 >> 12) & 0xf) + 1;
const int xzoom = 16 * 8 - (8 * ((attr >> 12) & 0xf)) / 2;
const int yzoom = 16 * 8 - (8 * ((attr >> 8) & 0xf)) / 2;
u32 pri_mask = 0;
u32 colour = attr & 0xff;
if (priority)
m_colpri_cb(colour, pri_mask);
int sx = (data0 & 0x1ff) - (data0 & 0x200);
int sy = (data1 & 0x1ff) - (data1 & 0x200);
if (flip_screen)
{
flipx = !flipx; sx = max_x - sx - xnum * 16;
flipy = !flipy; sy = max_y - sy - ynum * 16;
}
int xstart, ystart, xend, yend, xinc, yinc;
if (flipx) { xstart = xnum-1; xend = -1; xinc = -1; }
else { xstart = 0; xend = xnum; xinc = +1; }
if (flipy) { ystart = ynum-1; yend = -1; yinc = -1; }
else { ystart = 0; yend = ynum; yinc = +1; }
for (int y = ystart; y != yend; y += yinc)
{
for (int x = xstart; x != xend; x += xinc)
{
if (priority)
{
if (xzoom == (16*8) && yzoom == (16*8))
gfx(0)->prio_transpen(bitmap,spriteclip,
code++,
colour,
flipx, flipy,
sx + x * 16, sy + y * 16,
screen.priority(), pri_mask, 15);
else
gfx(0)->prio_zoom_transpen(bitmap,spriteclip,
code++,
colour,
flipx, flipy,
sx + (x * xzoom) / 8, sy + (y * yzoom) / 8,
(0x10000/0x10/8) * (xzoom + 8), (0x10000/0x10/8) * (yzoom + 8),// nearest greater integer value to avoid holes
screen.priority(), pri_mask, 15);
}
else
{
if (xzoom == (16*8) && yzoom == (16*8))
gfx(0)->transpen(bitmap,spriteclip,
code++,
colour,
flipx, flipy,
sx + x * 16, sy + y * 16,
15);
else
gfx(0)->zoom_transpen(bitmap,spriteclip,
code++,
colour,
flipx, flipy,
sx + (x * xzoom) / 8, sy + (y * yzoom) / 8,
(0x10000/0x10/8) * (xzoom + 8), (0x10000/0x10/8) * (yzoom + 8),// nearest greater integer value to avoid holes
15);
}
}
}
}
}
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