mirror of
https://github.com/holub/mame
synced 2025-05-16 10:52:43 +03:00
8179a84458
* New abbreviated types are in osd and util namespaces, and also in global namespace for things that #include "emu.h" * Get rid of import of cstdint types to global namespace (C99 does this anyway) * Remove the cstdint types from everything in emu * Get rid of U64/S64 macros * Fix a bug in dps16 caused by incorrect use of macro * Fix debugcon not checking for "do " prefix case-insensitively * Fix a lot of messed up tabulation * More constexpr * Fix up many __names
967 lines
26 KiB
C++
967 lines
26 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Aaron Giles
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/***************************************************************************
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emupal.c
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Palette device.
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***************************************************************************/
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#include "emu.h"
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#define VERBOSE 0
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type PALETTE = &device_creator<palette_device>;
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palette_device::palette_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
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: device_t(mconfig, PALETTE, "palette", tag, owner, clock, "palette", __FILE__),
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m_entries(0),
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m_indirect_entries(0),
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m_enable_shadows(0),
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m_enable_hilights(0),
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m_membits(0),
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m_membits_supplied(false),
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m_endianness(),
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m_endianness_supplied(false),
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m_raw_to_rgb(raw_to_rgb_converter()),
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m_palette(nullptr),
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m_pens(nullptr),
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m_format(),
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m_shadow_table(nullptr),
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m_shadow_group(0),
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m_hilight_group(0),
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m_white_pen(0),
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m_black_pen(0),
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m_init(palette_init_delegate())
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{
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}
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//**************************************************************************
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// INITIALIZATION AND CONFIGURATION
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//**************************************************************************
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void palette_device::static_set_init(device_t &device, palette_init_delegate init)
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{
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downcast<palette_device &>(device).m_init = init;
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}
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void palette_device::static_set_format(device_t &device, raw_to_rgb_converter raw_to_rgb)
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{
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downcast<palette_device &>(device).m_raw_to_rgb = raw_to_rgb;
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}
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void palette_device::static_set_membits(device_t &device, int membits)
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{
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palette_device &palette = downcast<palette_device &>(device);
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palette.m_membits = membits;
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palette.m_membits_supplied = true;
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}
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void palette_device::static_set_endianness(device_t &device, endianness_t endianness)
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{
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palette_device &palette = downcast<palette_device &>(device);
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palette.m_endianness = endianness;
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palette.m_endianness_supplied = true;
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}
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void palette_device::static_set_entries(device_t &device, int entries)
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{
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downcast<palette_device &>(device).m_entries = entries;
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}
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void palette_device::static_set_indirect_entries(device_t &device, int entries)
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{
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downcast<palette_device &>(device).m_indirect_entries = entries;
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}
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void palette_device::static_enable_shadows(device_t &device)
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{
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downcast<palette_device &>(device).m_enable_shadows = true;
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}
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void palette_device::static_enable_hilights(device_t &device)
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{
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downcast<palette_device &>(device).m_enable_hilights = true;
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}
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//**************************************************************************
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// INDIRECTION (AKA COLORTABLES)
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//**************************************************************************
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//-------------------------------------------------
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// set_indirect_color - set an indirect color
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//-------------------------------------------------
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void palette_device::set_indirect_color(int index, rgb_t rgb)
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{
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// make sure we are in range
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assert(index < m_indirect_entries);
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// alpha doesn't matter
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rgb.set_a(255);
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// update if it has changed
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if (m_indirect_colors[index] != rgb)
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{
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m_indirect_colors[index] = rgb;
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// update the palette for any colortable entries that reference it
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for (u32 pen = 0; pen < m_indirect_pens.size(); pen++)
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if (m_indirect_pens[pen] == index)
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m_palette->entry_set_color(pen, rgb);
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}
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}
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//-------------------------------------------------
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// set_pen_indirect - set an indirect pen index
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//-------------------------------------------------
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void palette_device::set_pen_indirect(pen_t pen, indirect_pen_t index)
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{
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// make sure we are in range
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assert(pen < m_entries && index < m_indirect_entries);
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m_indirect_pens[pen] = index;
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m_palette->entry_set_color(pen, m_indirect_colors[index]);
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}
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//-------------------------------------------------
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// transpen_mask - return a mask of pens that
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// whose indirect values match the given
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// transcolor
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//-------------------------------------------------
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u32 palette_device::transpen_mask(gfx_element &gfx, u32 color, indirect_pen_t transcolor)
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{
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u32 entry = gfx.colorbase() + (color % gfx.colors()) * gfx.granularity();
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// make sure we are in range
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assert(entry < m_indirect_pens.size());
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assert(gfx.depth() <= 32);
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// either gfx->color_depth entries or as many as we can get up until the end
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int count = std::min(size_t(gfx.depth()), m_indirect_pens.size() - entry);
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// set a bit anywhere the transcolor matches
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u32 mask = 0;
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for (int bit = 0; bit < count; bit++)
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if (m_indirect_pens[entry++] == transcolor)
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mask |= 1 << bit;
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// return the final mask
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return mask;
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}
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//**************************************************************************
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// SHADOW TABLE CONFIGURATION
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//**************************************************************************
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//-------------------------------------------------
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// palette_set_shadow_mode(mode)
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//
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// mode: 0 = use preset 0 (default shadow)
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// 1 = use preset 1 (default highlight)
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// 2 = use preset 2 *
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// 3 = use preset 3 *
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//
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// * Preset 2 & 3 work independently under 32bpp,
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// supporting up to four different types of
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// shadows at one time. They mirror preset 1 & 2
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// in lower depth settings to maintain
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// compatibility.
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//
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//
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// set_shadow_dRGB32(mode, dr, dg, db, noclip)
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//
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// mode: 0 to 3 (which preset to configure)
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//
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// dr: -255 to 255 ( red displacement )
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// dg: -255 to 255 ( green displacement )
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// db: -255 to 255 ( blue displacement )
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//
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// noclip: 0 = resultant RGB clipped at 0x00/0xff
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// 1 = resultant RGB wraparound 0x00/0xff
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//
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//
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// * Color shadows only work under 32bpp.
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// This function has no effect in lower color
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// depths where
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//
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// set_shadow_factor() or
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// set_highlight_factor()
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//
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// should be used instead.
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//
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// * 32-bit shadows are lossy. Even with zero RGB
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// displacements the affected area will still look
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// slightly darkened.
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//
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// Drivers should ensure all shadow pens in
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// gfx_drawmode_table[] are set to DRAWMODE_NONE
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// when RGB displacements are zero to avoid the
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// darkening effect.
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//-------------------------------------------------
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//-------------------------------------------------
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// set_shadow_dRGB32 - configure delta RGB values
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// for 1 of 4 shadow tables
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//-------------------------------------------------
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void palette_device::set_shadow_dRGB32(int mode, int dr, int dg, int db, bool noclip)
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{
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shadow_table_data &stable = m_shadow_tables[mode];
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// only applies to RGB direct modes
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assert(m_format != BITMAP_FORMAT_IND16);
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assert(stable.base != nullptr);
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// clamp the deltas (why?)
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if (dr < -0xff) dr = -0xff; else if (dr > 0xff) dr = 0xff;
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if (dg < -0xff) dg = -0xff; else if (dg > 0xff) dg = 0xff;
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if (db < -0xff) db = -0xff; else if (db > 0xff) db = 0xff;
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// early exit if nothing changed
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if (dr == stable.dr && dg == stable.dg && db == stable.db && noclip == stable.noclip)
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return;
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stable.dr = dr;
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stable.dg = dg;
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stable.db = db;
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stable.noclip = noclip;
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if (VERBOSE)
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popmessage("shadow %d recalc %d %d %d %02x", mode, dr, dg, db, noclip);
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// regenerate the table
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for (int i = 0; i < 32768; i++)
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{
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int r = pal5bit(i >> 10) + dr;
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int g = pal5bit(i >> 5) + dg;
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int b = pal5bit(i >> 0) + db;
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// apply clipping
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if (!noclip)
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{
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r = rgb_t::clamp(r);
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g = rgb_t::clamp(g);
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b = rgb_t::clamp(b);
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}
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rgb_t final = rgb_t(r, g, b);
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// store either 16 or 32 bit
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if (m_format == BITMAP_FORMAT_RGB32)
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stable.base[i] = final;
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else
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stable.base[i] = final.as_rgb15();
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}
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}
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//**************************************************************************
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// GENERIC WRITE HANDLERS
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//**************************************************************************
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//-------------------------------------------------
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// update_for_write - given a write of a given
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// length to a given byte offset, update all
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// potentially modified palette entries
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//-------------------------------------------------
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inline void palette_device::update_for_write(offs_t byte_offset, int bytes_modified, bool indirect)
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{
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assert((m_indirect_entries != 0) == indirect);
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// determine how many entries were modified
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int bpe = m_paletteram.bytes_per_entry();
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assert(bpe != 0);
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int count = (bytes_modified + bpe - 1) / bpe;
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// for each entry modified, fetch the palette data and set the pen color or indirect color
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offs_t base = byte_offset / bpe;
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for (int index = 0; index < count; index++)
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{
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if (indirect)
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set_indirect_color(base + index, m_raw_to_rgb(read_entry(base + index)));
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else
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m_palette->entry_set_color(base + index, m_raw_to_rgb(read_entry(base + index)));
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}
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}
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//-------------------------------------------------
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// write - write a byte to the base paletteram
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//-------------------------------------------------
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WRITE8_MEMBER(palette_device::write)
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{
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m_paletteram.write8(offset, data);
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update_for_write(offset, 1);
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}
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WRITE16_MEMBER(palette_device::write)
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{
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m_paletteram.write16(offset, data, mem_mask);
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update_for_write(offset * 2, 2);
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}
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WRITE32_MEMBER(palette_device::write)
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{
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m_paletteram.write32(offset, data, mem_mask);
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update_for_write(offset * 4, 4);
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}
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READ8_MEMBER(palette_device::read)
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{
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return m_paletteram.read8(offset);
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}
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READ16_MEMBER(palette_device::read)
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{
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return m_paletteram.read16(offset);
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}
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READ32_MEMBER(palette_device::read)
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{
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return m_paletteram.read32(offset);
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}
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//-------------------------------------------------
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// write_ext - write a byte to the extended
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// paletteram
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//-------------------------------------------------
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WRITE8_MEMBER(palette_device::write_ext)
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{
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m_paletteram_ext.write8(offset, data);
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update_for_write(offset, 1);
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}
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WRITE16_MEMBER(palette_device::write_ext)
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{
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m_paletteram_ext.write16(offset, data, mem_mask);
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update_for_write(offset * 2, 2);
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}
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//-------------------------------------------------
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// write_indirect - write a byte to the base
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// paletteram, updating indirect colors
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//-------------------------------------------------
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WRITE8_MEMBER(palette_device::write_indirect)
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{
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m_paletteram.write8(offset, data);
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update_for_write(offset, 1, true);
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}
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//-------------------------------------------------
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// write_ext - write a byte to the extended
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// paletteram, updating indirect colors
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//-------------------------------------------------
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WRITE8_MEMBER(palette_device::write_indirect_ext)
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{
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m_paletteram_ext.write8(offset, data);
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update_for_write(offset, 1, true);
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}
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//**************************************************************************
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// DEVICE MANAGEMENT
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//**************************************************************************
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//-------------------------------------------------
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// device_start - start up the device
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//-------------------------------------------------
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void palette_device::device_start()
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{
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// bind the init function
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m_init.bind_relative_to(*owner());
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// find the memory, if present
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const memory_share *share = memshare(tag());
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if (share != nullptr)
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{
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// find the extended (split) memory, if present
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std::string tag_ext = std::string(tag()).append("_ext");
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const memory_share *share_ext = memshare(tag_ext.c_str());
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// make sure we have specified a format
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assert_always(m_raw_to_rgb.bytes_per_entry() > 0, "Palette has memory share but no format specified");
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// determine bytes per entry and configure
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int bytes_per_entry = m_raw_to_rgb.bytes_per_entry();
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if (share_ext == nullptr)
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m_paletteram.set(*share, bytes_per_entry);
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else
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{
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m_paletteram.set(*share, bytes_per_entry / 2);
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m_paletteram_ext.set(*share_ext, bytes_per_entry / 2);
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}
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// override membits if provided
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if (m_membits_supplied)
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{
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// forcing width only makes sense when narrower than the native bus width
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assert_always(m_membits < share->bitwidth(), "Improper use of MCFG_PALETTE_MEMBITS");
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m_paletteram.set_membits(m_membits);
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if (share_ext != nullptr)
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m_paletteram_ext.set_membits(m_membits);
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}
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// override endianness if provided
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if (m_endianness_supplied)
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{
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// forcing endianness only makes sense when the RAM is narrower than the palette format and not split
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assert_always((share_ext == nullptr && m_paletteram.membits() / 8 < bytes_per_entry), "Improper use of MCFG_PALETTE_ENDIANNESS");
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m_paletteram.set_endianness(m_endianness);
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}
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}
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// reset all our data
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screen_device *device = machine().first_screen();
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m_format = (device != nullptr) ? device->format() : BITMAP_FORMAT_INVALID;
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// allocate the palette
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if (m_entries > 0)
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{
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allocate_palette();
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allocate_color_tables();
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allocate_shadow_tables();
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// allocate indirection tables
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if (m_indirect_entries > 0)
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{
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m_indirect_colors.resize(m_indirect_entries);
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for (int color = 0; color < m_indirect_entries; color++)
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{
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// alpha = 0 ensures change is detected the first time set_indirect_color() is called
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m_indirect_colors[color] = rgb_t::transparent();
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}
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m_indirect_pens.resize(m_entries);
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for (int pen = 0; pen < m_entries; pen++)
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m_indirect_pens[pen] = pen % m_indirect_entries;
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}
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}
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// call the initialization helper if present
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if (!m_init.isnull())
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m_init(*this);
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// set up save/restore of the palette
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m_save_pen.resize(m_palette->num_colors());
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m_save_contrast.resize(m_palette->num_colors());
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save_item(NAME(m_save_pen));
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save_item(NAME(m_save_contrast));
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// save indirection tables if we have them
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if (m_indirect_entries > 0)
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{
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save_item(NAME(m_indirect_colors));
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save_item(NAME(m_indirect_pens));
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}
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}
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//**************************************************************************
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// INTERNAL FUNCTIONS
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//**************************************************************************
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//-------------------------------------------------
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// device_pre_save - prepare the save arrays
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// for saving
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//-------------------------------------------------
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void palette_device::device_pre_save()
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{
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// fill the save arrays with updated pen and brightness information
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int numcolors = m_palette->num_colors();
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for (int index = 0; index < numcolors; index++)
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{
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m_save_pen[index] = pen_color(index);
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m_save_contrast[index] = pen_contrast(index);
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}
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}
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//-------------------------------------------------
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// device_post_load - called after restore to
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// actually update the palette
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//-------------------------------------------------
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void palette_device::device_post_load()
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{
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// reset the pen and brightness for each entry
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int numcolors = m_palette->num_colors();
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for (int index = 0; index < numcolors; index++)
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{
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set_pen_color(index, m_save_pen[index]);
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set_pen_contrast(index, m_save_contrast[index]);
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}
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}
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//-------------------------------------------------
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// device_stop - final cleanup
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//-------------------------------------------------
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void palette_device::device_stop()
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{
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// dereference the palette
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if (m_palette != nullptr)
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m_palette->deref();
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}
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//-------------------------------------------------
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// device_validity_check - validate device
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// configuration
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//-------------------------------------------------
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|
|
void palette_device::device_validity_check(validity_checker &valid) const
|
|
{
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// allocate_palette - allocate and configure the
|
|
// palette object itself
|
|
//-------------------------------------------------
|
|
|
|
void palette_device::allocate_palette()
|
|
{
|
|
// determine the number of groups we need
|
|
int numgroups = 1;
|
|
if (m_enable_shadows)
|
|
m_shadow_group = numgroups++;
|
|
if (m_enable_hilights)
|
|
m_hilight_group = numgroups++;
|
|
assert_always(m_entries * numgroups <= 65536, "Palette has more than 65536 colors.");
|
|
|
|
// allocate a palette object containing all the colors and groups
|
|
m_palette = palette_t::alloc(m_entries, numgroups);
|
|
|
|
// configure the groups
|
|
if (m_shadow_group != 0)
|
|
set_shadow_factor(float(PALETTE_DEFAULT_SHADOW_FACTOR));
|
|
if (m_hilight_group != 0)
|
|
set_highlight_factor(float(PALETTE_DEFAULT_HIGHLIGHT_FACTOR));
|
|
|
|
// set the initial colors to a standard rainbow
|
|
for (int index = 0; index < m_entries; index++)
|
|
set_pen_color(index, rgbexpand<1,1,1>(index, 0, 1, 2));
|
|
|
|
// switch off the color mode
|
|
switch (m_format)
|
|
{
|
|
// 16-bit paletteized case
|
|
case BITMAP_FORMAT_IND16:
|
|
m_black_pen = m_palette->black_entry();
|
|
m_white_pen = m_palette->white_entry();
|
|
if (m_black_pen >= 65536)
|
|
m_black_pen = 0;
|
|
if (m_white_pen >= 65536)
|
|
m_white_pen = 65535;
|
|
break;
|
|
|
|
// 32-bit direct case
|
|
case BITMAP_FORMAT_RGB32:
|
|
m_black_pen = rgb_t::black();
|
|
m_white_pen = rgb_t::white();
|
|
break;
|
|
|
|
// screenless case
|
|
case BITMAP_FORMAT_INVALID:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// allocate_color_tables - allocate memory for
|
|
// pen and color tables
|
|
//-------------------------------------------------
|
|
|
|
void palette_device::allocate_color_tables()
|
|
{
|
|
int total_colors = m_palette->num_colors() * m_palette->num_groups();
|
|
|
|
// allocate memory for the pen table
|
|
switch (m_format)
|
|
{
|
|
case BITMAP_FORMAT_IND16:
|
|
// create a dummy 1:1 mapping
|
|
{
|
|
m_pen_array.resize(total_colors + 2);
|
|
pen_t *pentable = &m_pen_array[0];
|
|
m_pens = &m_pen_array[0];
|
|
for (int i = 0; i < total_colors + 2; i++)
|
|
pentable[i] = i;
|
|
}
|
|
break;
|
|
|
|
case BITMAP_FORMAT_RGB32:
|
|
m_pens = reinterpret_cast<const pen_t *>(m_palette->entry_list_adjusted());
|
|
break;
|
|
|
|
default:
|
|
m_pens = nullptr;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// allocate_shadow_tables - allocate memory for
|
|
// shadow tables
|
|
//-------------------------------------------------
|
|
|
|
void palette_device::allocate_shadow_tables()
|
|
{
|
|
// if we have shadows, allocate shadow tables
|
|
if (m_enable_shadows)
|
|
{
|
|
m_shadow_array.resize(65536);
|
|
|
|
// palettized mode gets a single 64k table in slots 0 and 2
|
|
if (m_format == BITMAP_FORMAT_IND16)
|
|
{
|
|
m_shadow_tables[0].base = m_shadow_tables[2].base = &m_shadow_array[0];
|
|
for (int i = 0; i < 65536; i++)
|
|
m_shadow_array[i] = (i < m_entries) ? (i + m_entries) : i;
|
|
}
|
|
|
|
// RGB mode gets two 32k tables in slots 0 and 2
|
|
else
|
|
{
|
|
m_shadow_tables[0].base = &m_shadow_array[0];
|
|
m_shadow_tables[2].base = &m_shadow_array[32768];
|
|
configure_rgb_shadows(0, float(PALETTE_DEFAULT_SHADOW_FACTOR));
|
|
}
|
|
}
|
|
|
|
// if we have hilights, allocate shadow tables
|
|
if (m_enable_hilights)
|
|
{
|
|
m_hilight_array.resize(65536);
|
|
|
|
// palettized mode gets a single 64k table in slots 1 and 3
|
|
if (m_format == BITMAP_FORMAT_IND16)
|
|
{
|
|
m_shadow_tables[1].base = m_shadow_tables[3].base = &m_hilight_array[0];
|
|
for (int i = 0; i < 65536; i++)
|
|
m_hilight_array[i] = (i < m_entries) ? (i + 2 * m_entries) : i;
|
|
}
|
|
|
|
// RGB mode gets two 32k tables in slots 1 and 3
|
|
else
|
|
{
|
|
m_shadow_tables[1].base = &m_hilight_array[0];
|
|
m_shadow_tables[3].base = &m_hilight_array[32768];
|
|
configure_rgb_shadows(1, float(PALETTE_DEFAULT_HIGHLIGHT_FACTOR));
|
|
}
|
|
}
|
|
|
|
// set the default table
|
|
m_shadow_table = m_shadow_tables[0].base;
|
|
}
|
|
|
|
|
|
//-------------------------------------------------
|
|
// configure_rgb_shadows - configure shadows
|
|
// for the RGB tables
|
|
//-------------------------------------------------
|
|
|
|
void palette_device::configure_rgb_shadows(int mode, float factor)
|
|
{
|
|
// only applies to RGB direct modes
|
|
assert(m_format != BITMAP_FORMAT_IND16);
|
|
|
|
// verify the shadow table
|
|
assert(mode >= 0 && mode < ARRAY_LENGTH(m_shadow_tables));
|
|
shadow_table_data &stable = m_shadow_tables[mode];
|
|
assert(stable.base != nullptr);
|
|
|
|
// regenerate the table
|
|
int ifactor = int(factor * 256.0f);
|
|
for (int rgb555 = 0; rgb555 < 32768; rgb555++)
|
|
{
|
|
u8 const r = rgb_t::clamp((pal5bit(rgb555 >> 10) * ifactor) >> 8);
|
|
u8 const g = rgb_t::clamp((pal5bit(rgb555 >> 5) * ifactor) >> 8);
|
|
u8 const b = rgb_t::clamp((pal5bit(rgb555 >> 0) * ifactor) >> 8);
|
|
|
|
// store either 16 or 32 bit
|
|
rgb_t final = rgb_t(r, g, b);
|
|
if (m_format == BITMAP_FORMAT_RGB32)
|
|
stable.base[rgb555] = final;
|
|
else
|
|
stable.base[rgb555] = final.as_rgb15();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//**************************************************************************
|
|
// COMMON PALETTE INITIALIZATION
|
|
//**************************************************************************
|
|
|
|
/*-------------------------------------------------
|
|
black - completely black palette
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_all_black(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < palette.entries(); i++)
|
|
{
|
|
palette.set_pen_color(i, rgb_t::black());
|
|
}
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
monochrome - 2-color black & white
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_monochrome(palette_device &palette)
|
|
{
|
|
palette.set_pen_color(0, rgb_t::black());
|
|
palette.set_pen_color(1, rgb_t::white());
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
monochrome_inverted - 2-color white & black
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_monochrome_inverted(palette_device &palette)
|
|
{
|
|
palette.set_pen_color(0, rgb_t::white());
|
|
palette.set_pen_color(1, rgb_t::black());
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
monochrome_highlight - 3-color
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_monochrome_highlight(palette_device &palette)
|
|
{
|
|
palette.set_pen_color(0, rgb_t::black());
|
|
palette.set_pen_color(1, rgb_t(0xc0, 0xc0, 0xc0));
|
|
palette.set_pen_color(2, rgb_t::white());
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
3bit_rgb - 8-color rgb
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_3bit_rgb(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
palette.set_pen_color(i, rgb_t(pal1bit(i >> 0), pal1bit(i >> 1), pal1bit(i >> 2)));
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
3bit_rbg - 8-color rgb
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_3bit_rbg(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
palette.set_pen_color(i, rgb_t(pal1bit(i >> 0), pal1bit(i >> 2), pal1bit(i >> 1)));
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
3bit_brg - 8-color rgb
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_3bit_brg(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
palette.set_pen_color(i, rgb_t(pal1bit(i >> 1), pal1bit(i >> 2), pal1bit(i >> 0)));
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
3bit_grb - 8-color rgb
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_3bit_grb(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
palette.set_pen_color(i, rgb_t(pal1bit(i >> 1), pal1bit(i >> 0), pal1bit(i >> 2)));
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
3bit_gbr - 8-color rgb
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_3bit_gbr(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
palette.set_pen_color(i, rgb_t(pal1bit(i >> 2), pal1bit(i >> 0), pal1bit(i >> 1)));
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
3bit_bgr - 8-color rgb
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_3bit_bgr(palette_device &palette)
|
|
{
|
|
for (int i = 0; i < 8; i++)
|
|
palette.set_pen_color(i, rgb_t(pal1bit(i >> 2), pal1bit(i >> 1), pal1bit(i >> 0)));
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------
|
|
RRRR_GGGG_BBBB - standard 4-4-4 palette,
|
|
assuming the commonly used resistor values:
|
|
|
|
bit 3 -- 220 ohm resistor -- RED/GREEN/BLUE
|
|
-- 470 ohm resistor -- RED/GREEN/BLUE
|
|
-- 1 kohm resistor -- RED/GREEN/BLUE
|
|
bit 0 -- 2.2kohm resistor -- RED/GREEN/BLUE
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_RRRRGGGGBBBB_proms(palette_device &palette)
|
|
{
|
|
const u8 *color_prom = machine().root_device().memregion("proms")->base();
|
|
int i;
|
|
|
|
for (i = 0; i < palette.entries(); i++)
|
|
{
|
|
int bit0,bit1,bit2,bit3,r,g,b;
|
|
|
|
// red component
|
|
bit0 = (color_prom[i] >> 0) & 0x01;
|
|
bit1 = (color_prom[i] >> 1) & 0x01;
|
|
bit2 = (color_prom[i] >> 2) & 0x01;
|
|
bit3 = (color_prom[i] >> 3) & 0x01;
|
|
r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
|
|
|
|
// green component
|
|
bit0 = (color_prom[i + palette.entries()] >> 0) & 0x01;
|
|
bit1 = (color_prom[i + palette.entries()] >> 1) & 0x01;
|
|
bit2 = (color_prom[i + palette.entries()] >> 2) & 0x01;
|
|
bit3 = (color_prom[i + palette.entries()] >> 3) & 0x01;
|
|
g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
|
|
|
|
// blue component
|
|
bit0 = (color_prom[i + 2*palette.entries()] >> 0) & 0x01;
|
|
bit1 = (color_prom[i + 2*palette.entries()] >> 1) & 0x01;
|
|
bit2 = (color_prom[i + 2*palette.entries()] >> 2) & 0x01;
|
|
bit3 = (color_prom[i + 2*palette.entries()] >> 3) & 0x01;
|
|
b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
|
|
|
|
palette.set_pen_color(i,rgb_t(r,g,b));
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*-------------------------------------------------
|
|
RRRRR_GGGGG_BBBBB/BBBBB_GGGGG_RRRRR -
|
|
standard 5-5-5 palette for games using a
|
|
15-bit color space
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_RRRRRGGGGGBBBBB(palette_device &palette)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 0x8000; i++)
|
|
palette.set_pen_color(i, rgbexpand<5,5,5>(i, 10, 5, 0));
|
|
}
|
|
|
|
|
|
void palette_device::palette_init_BBBBBGGGGGRRRRR(palette_device &palette)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 0x8000; i++)
|
|
palette.set_pen_color(i, rgbexpand<5,5,5>(i, 0, 5, 10));
|
|
}
|
|
|
|
|
|
|
|
/*-------------------------------------------------
|
|
RRRRR_GGGGGG_BBBBB -
|
|
standard 5-6-5 palette for games using a
|
|
16-bit color space
|
|
-------------------------------------------------*/
|
|
|
|
void palette_device::palette_init_RRRRRGGGGGGBBBBB(palette_device &palette)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 0x10000; i++)
|
|
palette.set_pen_color(i, rgbexpand<5,6,5>(i, 11, 5, 0));
|
|
}
|
|
|
|
rgb_t raw_to_rgb_converter::IRRRRRGGGGGBBBBB_decoder(u32 raw)
|
|
{
|
|
u8 const i = (raw >> 15) & 1;
|
|
u8 const r = pal6bit(((raw >> 9) & 0x3e) | i);
|
|
u8 const g = pal6bit(((raw >> 4) & 0x3e) | i);
|
|
u8 const b = pal6bit(((raw << 1) & 0x3e) | i);
|
|
return rgb_t(r, g, b);
|
|
}
|
|
|
|
rgb_t raw_to_rgb_converter::RRRRGGGGBBBBRGBx_decoder(u32 raw)
|
|
{
|
|
u8 const r = pal5bit(((raw >> 11) & 0x1e) | ((raw >> 3) & 0x01));
|
|
u8 const g = pal5bit(((raw >> 7) & 0x1e) | ((raw >> 2) & 0x01));
|
|
u8 const b = pal5bit(((raw >> 3) & 0x1e) | ((raw >> 1) & 0x01));
|
|
return rgb_t(r, g, b);
|
|
}
|
|
|
|
rgb_t raw_to_rgb_converter::xRGBRRRRGGGGBBBB_bit0_decoder(u32 raw)
|
|
{
|
|
u8 const r = pal5bit(((raw >> 7) & 0x1e) | ((raw >> 14) & 0x01));
|
|
u8 const g = pal5bit(((raw >> 3) & 0x1e) | ((raw >> 13) & 0x01));
|
|
u8 const b = pal5bit(((raw << 1) & 0x1e) | ((raw >> 12) & 0x01));
|
|
return rgb_t(r, g, b);
|
|
}
|
|
|
|
rgb_t raw_to_rgb_converter::xRGBRRRRGGGGBBBB_bit4_decoder(u32 raw)
|
|
{
|
|
u8 const r = pal5bit(((raw >> 8) & 0x0f) | ((raw >> 10) & 0x10));
|
|
u8 const g = pal5bit(((raw >> 4) & 0x0f) | ((raw >> 9) & 0x10));
|
|
u8 const b = pal5bit(((raw >> 0) & 0x0f) | ((raw >> 8) & 0x10));
|
|
return rgb_t(r, g, b);
|
|
}
|