2011-07-14 00:49:52 +02:00
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/***************************************************************************************
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* Genesis Plus
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2016-04-10 17:06:22 +02:00
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* Video Display Processor (pixel output rendering)
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2011-07-14 00:49:52 +02:00
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*
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2014-03-02 16:07:08 +01:00
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* Support for all TMS99xx modes, Mode 4 & Mode 5 rendering
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2011-07-14 00:49:52 +02:00
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*
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2014-10-29 00:24:00 +01:00
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* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Charles Mac Donald (original code)
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2016-04-10 17:06:22 +02:00
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* Copyright (C) 2007-2016 Eke-Eke (Genesis Plus GX)
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2022-09-19 14:03:44 +02:00
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* Copyright (C) 2022 AlexKiri (enhanced vscroll mode rendering function)
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2011-07-14 00:49:52 +02:00
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*
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----------------------
Genesis Plus GX 1.6.0
----------------------
[Core/Sound]
---------------
* added YM2413 emulation in Master System compatibility mode.
* fixed SN76489 noise boost initialization.
* minor YM2612 core optimizations.
[Core/VDP]
---------------
* added accurate emulation of SG-1000, Master System (315-5124, 315-5246) & Game Gear VDP.
* added support for all TMS9918 rendering modes.
* improved Mega Drive VDP timings accuracy in Master System Compatibility mode.
* fixed color palette initialization.
* fixed shifted sprites rendering in Mode 4.
* modified pixel rendering support (pixel depth is now forced at compilation time).
[Core/CPU]
---------------
* optimized 68k core (rewrote 68k interrupt handling, removed multiple CPU types support & unused code) for 5~8% speed improvment
[Core/IO]
---------------
* added accurate emulation of Master System (315-5216, 315-5237, 315-5297) & Game Gear I/O controllers.
* added Terebi Oekaki tablet emulation.
* improved Mouse emulation (fixes mouse support in Cannon Fodder).
* improved Justifier emulation (fixes gun support in Lethal Enforcers 2).
* improved 6-Buttons control pad emulation (fixes Duke Nukem 3D)
* modified lightgun emulation to use common key inputs for all devices.
* 2-buttons controller is now picked by default for Master System games.
[Core/MD]
---------------
* added copy-protection hardware emulation for some new dumped games (Tiny Toon Adventures 3, Mighty Morphin Power Rangers & The Battle of Red Cliffs).
* added Game Toshokan in EEPROM database (verified on real cartridge).
* fixed Micro Machines 2 - Turbo Tournament EEPROM size (verified on real cartridge).
* modified SRAM banswitch hardware emulation to be more compatible with some hacks.
[Core/MS]
---------------
* added Cyborg Z to Korean mapper database.
[Core/GG]
---------------
* added 93C46 EEPROM emulation (Majors Pro Baseball, World Series Baseball & World Series Baseball 95).
[Core/General]
---------------
* added support for .mdx ROM format.
* added Game Gear & SG-1000 ROM support.
* added accurate emulation of SG-1000, Master System (I, II) & Game Gear hardware models for 100% compatibility.
* updated to new Genesis Plus license (see http://cgfm2.emuviews.com/)
* removed DOS port
* various code cleanup.
[Gamecube/Wii]
---------------
* IMPORTANT: cheats, screenshots & save files are now stored in console-specific directories (ex: /snaps/md, /cheats/ms, /saves/gg, ...)
* added 8-bit Action Replay & Game Genie codes support (for Master System & Game Gear games).
* improved audio/video synchronization for PAL games in 50Hz TV modes (now use VSYNC like NTSC games in 60hz modes).
* improved gun cursor positioning accuracy.
* improved horizontal scaling & screenshots rendering in H32 mode.
* fixed a bug with ROM file extension handling that would affect cheats, snapshots, sram & savestate files.
* removed ARAM/injected ROM support (unused).
* removed WPAD_ and PAD_ update from VSYNC callback.
* increased GCC inlining limits for some speed improvment.
* compiled with devkitPPC r24 & libogc 1.8.7.
2011-08-07 19:49:46 +02:00
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* Redistribution and use of this code or any derivative works are permitted
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* provided that the following conditions are met:
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2011-07-14 00:49:52 +02:00
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*
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----------------------
Genesis Plus GX 1.6.0
----------------------
[Core/Sound]
---------------
* added YM2413 emulation in Master System compatibility mode.
* fixed SN76489 noise boost initialization.
* minor YM2612 core optimizations.
[Core/VDP]
---------------
* added accurate emulation of SG-1000, Master System (315-5124, 315-5246) & Game Gear VDP.
* added support for all TMS9918 rendering modes.
* improved Mega Drive VDP timings accuracy in Master System Compatibility mode.
* fixed color palette initialization.
* fixed shifted sprites rendering in Mode 4.
* modified pixel rendering support (pixel depth is now forced at compilation time).
[Core/CPU]
---------------
* optimized 68k core (rewrote 68k interrupt handling, removed multiple CPU types support & unused code) for 5~8% speed improvment
[Core/IO]
---------------
* added accurate emulation of Master System (315-5216, 315-5237, 315-5297) & Game Gear I/O controllers.
* added Terebi Oekaki tablet emulation.
* improved Mouse emulation (fixes mouse support in Cannon Fodder).
* improved Justifier emulation (fixes gun support in Lethal Enforcers 2).
* improved 6-Buttons control pad emulation (fixes Duke Nukem 3D)
* modified lightgun emulation to use common key inputs for all devices.
* 2-buttons controller is now picked by default for Master System games.
[Core/MD]
---------------
* added copy-protection hardware emulation for some new dumped games (Tiny Toon Adventures 3, Mighty Morphin Power Rangers & The Battle of Red Cliffs).
* added Game Toshokan in EEPROM database (verified on real cartridge).
* fixed Micro Machines 2 - Turbo Tournament EEPROM size (verified on real cartridge).
* modified SRAM banswitch hardware emulation to be more compatible with some hacks.
[Core/MS]
---------------
* added Cyborg Z to Korean mapper database.
[Core/GG]
---------------
* added 93C46 EEPROM emulation (Majors Pro Baseball, World Series Baseball & World Series Baseball 95).
[Core/General]
---------------
* added support for .mdx ROM format.
* added Game Gear & SG-1000 ROM support.
* added accurate emulation of SG-1000, Master System (I, II) & Game Gear hardware models for 100% compatibility.
* updated to new Genesis Plus license (see http://cgfm2.emuviews.com/)
* removed DOS port
* various code cleanup.
[Gamecube/Wii]
---------------
* IMPORTANT: cheats, screenshots & save files are now stored in console-specific directories (ex: /snaps/md, /cheats/ms, /saves/gg, ...)
* added 8-bit Action Replay & Game Genie codes support (for Master System & Game Gear games).
* improved audio/video synchronization for PAL games in 50Hz TV modes (now use VSYNC like NTSC games in 60hz modes).
* improved gun cursor positioning accuracy.
* improved horizontal scaling & screenshots rendering in H32 mode.
* fixed a bug with ROM file extension handling that would affect cheats, snapshots, sram & savestate files.
* removed ARAM/injected ROM support (unused).
* removed WPAD_ and PAD_ update from VSYNC callback.
* increased GCC inlining limits for some speed improvment.
* compiled with devkitPPC r24 & libogc 1.8.7.
2011-08-07 19:49:46 +02:00
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* - Redistributions may not be sold, nor may they be used in a commercial
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* product or activity.
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*
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* - Redistributions that are modified from the original source must include the
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* complete source code, including the source code for all components used by a
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* binary built from the modified sources. However, as a special exception, the
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* source code distributed need not include anything that is normally distributed
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* (in either source or binary form) with the major components (compiler, kernel,
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* and so on) of the operating system on which the executable runs, unless that
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* component itself accompanies the executable.
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*
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* - Redistributions must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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2011-07-14 00:49:52 +02:00
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*
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****************************************************************************************/
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#ifndef _RENDER_H_
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#define _RENDER_H_
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2014-11-23 20:45:22 +01:00
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/* 3:3:2 RGB */
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#if defined(USE_8BPP_RENDERING)
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#define PIXEL(r,g,b) (((r) << 5) | ((g) << 2) | (b))
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#define GET_R(pixel) (((pixel) & 0xe0) >> 5)
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#define GET_G(pixel) (((pixel) & 0x1c) >> 2)
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#define GET_B(pixel) (((pixel) & 0x03) >> 0)
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/* 5:5:5 RGB */
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#elif defined(USE_15BPP_RENDERING)
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2015-08-30 01:06:49 +02:00
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#if defined(USE_ABGR)
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#define PIXEL(r,g,b) ((1 << 15) | ((b) << 10) | ((g) << 5) | (r))
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#define GET_B(pixel) (((pixel) & 0x7c00) >> 10)
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#define GET_G(pixel) (((pixel) & 0x03e0) >> 5)
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#define GET_R(pixel) (((pixel) & 0x001f) >> 0)
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#else
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2014-11-23 20:45:22 +01:00
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#define PIXEL(r,g,b) ((1 << 15) | ((r) << 10) | ((g) << 5) | (b))
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#define GET_R(pixel) (((pixel) & 0x7c00) >> 10)
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#define GET_G(pixel) (((pixel) & 0x03e0) >> 5)
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#define GET_B(pixel) (((pixel) & 0x001f) >> 0)
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2015-08-30 01:06:49 +02:00
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#endif
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2015-10-17 19:12:32 +02:00
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2014-11-23 20:45:22 +01:00
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/* 5:6:5 RGB */
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#elif defined(USE_16BPP_RENDERING)
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#define PIXEL(r,g,b) (((r) << 11) | ((g) << 5) | (b))
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#define GET_R(pixel) (((pixel) & 0xf800) >> 11)
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#define GET_G(pixel) (((pixel) & 0x07e0) >> 5)
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#define GET_B(pixel) (((pixel) & 0x001f) >> 0)
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/* 8:8:8 RGB */
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#elif defined(USE_32BPP_RENDERING)
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#define PIXEL(r,g,b) ((0xff << 24) | ((r) << 16) | ((g) << 8) | (b))
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#define GET_R(pixel) (((pixel) & 0xff0000) >> 16)
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#define GET_G(pixel) (((pixel) & 0x00ff00) >> 8)
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#define GET_B(pixel) (((pixel) & 0x0000ff) >> 0)
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#endif
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/* LCD image persistence (ghosting) filter */
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/* Simulates (roughly) the slow decay response time of passive-matrix LCD */
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/* Rate value is formatted as 0.8 fixed-point integer (between 0.0 and 0.99609375), a higher value meaning a slower decay */
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/* Required for proper display of some effects in a few Game Gear games (James Pond 3, Power Drift, Super Monaco GP II,...) */
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#define RENDER_PIXEL_LCD(in,out,table,rate) \
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{ \
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PIXEL_OUT_T pixel_out = table[*in++]; \
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PIXEL_OUT_T pixel_old = *out; \
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uint8 r = GET_R(pixel_out); \
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uint8 g = GET_G(pixel_out); \
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uint8 b = GET_B(pixel_out); \
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int r_decay = GET_R(pixel_old) - r; \
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int g_decay = GET_G(pixel_old) - g; \
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int b_decay = GET_B(pixel_old) - b; \
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if (r_decay > 0) r += (rate * r_decay) >> 8; \
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if (g_decay > 0) g += (rate * g_decay) >> 8; \
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if (b_decay > 0) b += (rate * b_decay) >> 8; \
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*out++ = PIXEL(r,g,b); \
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}
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2011-07-14 00:49:52 +02:00
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/* Global variables */
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----------------------
Genesis Plus GX 1.6.0
----------------------
[Core/Sound]
---------------
* added YM2413 emulation in Master System compatibility mode.
* fixed SN76489 noise boost initialization.
* minor YM2612 core optimizations.
[Core/VDP]
---------------
* added accurate emulation of SG-1000, Master System (315-5124, 315-5246) & Game Gear VDP.
* added support for all TMS9918 rendering modes.
* improved Mega Drive VDP timings accuracy in Master System Compatibility mode.
* fixed color palette initialization.
* fixed shifted sprites rendering in Mode 4.
* modified pixel rendering support (pixel depth is now forced at compilation time).
[Core/CPU]
---------------
* optimized 68k core (rewrote 68k interrupt handling, removed multiple CPU types support & unused code) for 5~8% speed improvment
[Core/IO]
---------------
* added accurate emulation of Master System (315-5216, 315-5237, 315-5297) & Game Gear I/O controllers.
* added Terebi Oekaki tablet emulation.
* improved Mouse emulation (fixes mouse support in Cannon Fodder).
* improved Justifier emulation (fixes gun support in Lethal Enforcers 2).
* improved 6-Buttons control pad emulation (fixes Duke Nukem 3D)
* modified lightgun emulation to use common key inputs for all devices.
* 2-buttons controller is now picked by default for Master System games.
[Core/MD]
---------------
* added copy-protection hardware emulation for some new dumped games (Tiny Toon Adventures 3, Mighty Morphin Power Rangers & The Battle of Red Cliffs).
* added Game Toshokan in EEPROM database (verified on real cartridge).
* fixed Micro Machines 2 - Turbo Tournament EEPROM size (verified on real cartridge).
* modified SRAM banswitch hardware emulation to be more compatible with some hacks.
[Core/MS]
---------------
* added Cyborg Z to Korean mapper database.
[Core/GG]
---------------
* added 93C46 EEPROM emulation (Majors Pro Baseball, World Series Baseball & World Series Baseball 95).
[Core/General]
---------------
* added support for .mdx ROM format.
* added Game Gear & SG-1000 ROM support.
* added accurate emulation of SG-1000, Master System (I, II) & Game Gear hardware models for 100% compatibility.
* updated to new Genesis Plus license (see http://cgfm2.emuviews.com/)
* removed DOS port
* various code cleanup.
[Gamecube/Wii]
---------------
* IMPORTANT: cheats, screenshots & save files are now stored in console-specific directories (ex: /snaps/md, /cheats/ms, /saves/gg, ...)
* added 8-bit Action Replay & Game Genie codes support (for Master System & Game Gear games).
* improved audio/video synchronization for PAL games in 50Hz TV modes (now use VSYNC like NTSC games in 60hz modes).
* improved gun cursor positioning accuracy.
* improved horizontal scaling & screenshots rendering in H32 mode.
* fixed a bug with ROM file extension handling that would affect cheats, snapshots, sram & savestate files.
* removed ARAM/injected ROM support (unused).
* removed WPAD_ and PAD_ update from VSYNC callback.
* increased GCC inlining limits for some speed improvment.
* compiled with devkitPPC r24 & libogc 1.8.7.
2011-08-07 19:49:46 +02:00
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extern uint16 spr_col;
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2011-07-14 00:49:52 +02:00
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/* Function prototypes */
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extern void render_init(void);
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extern void render_reset(void);
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extern void render_line(int line);
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extern void blank_line(int line, int offset, int width);
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extern void remap_line(int line);
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extern void window_clip(unsigned int data, unsigned int sw);
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2013-10-20 20:53:33 +02:00
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extern void render_bg_m0(int line);
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extern void render_bg_m1(int line);
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extern void render_bg_m1x(int line);
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extern void render_bg_m2(int line);
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extern void render_bg_m3(int line);
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extern void render_bg_m3x(int line);
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extern void render_bg_inv(int line);
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extern void render_bg_m4(int line);
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extern void render_bg_m5(int line);
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extern void render_bg_m5_vs(int line);
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2022-08-13 08:11:41 +02:00
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extern void render_bg_m5_vs_enhanced(int line);
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2013-10-20 20:53:33 +02:00
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extern void render_bg_m5_im2(int line);
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extern void render_bg_m5_im2_vs(int line);
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extern void render_obj_tms(int line);
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extern void render_obj_m4(int line);
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extern void render_obj_m5(int line);
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extern void render_obj_m5_ste(int line);
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extern void render_obj_m5_im2(int line);
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extern void render_obj_m5_im2_ste(int line);
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----------------------
Genesis Plus GX 1.6.0
----------------------
[Core/Sound]
---------------
* added YM2413 emulation in Master System compatibility mode.
* fixed SN76489 noise boost initialization.
* minor YM2612 core optimizations.
[Core/VDP]
---------------
* added accurate emulation of SG-1000, Master System (315-5124, 315-5246) & Game Gear VDP.
* added support for all TMS9918 rendering modes.
* improved Mega Drive VDP timings accuracy in Master System Compatibility mode.
* fixed color palette initialization.
* fixed shifted sprites rendering in Mode 4.
* modified pixel rendering support (pixel depth is now forced at compilation time).
[Core/CPU]
---------------
* optimized 68k core (rewrote 68k interrupt handling, removed multiple CPU types support & unused code) for 5~8% speed improvment
[Core/IO]
---------------
* added accurate emulation of Master System (315-5216, 315-5237, 315-5297) & Game Gear I/O controllers.
* added Terebi Oekaki tablet emulation.
* improved Mouse emulation (fixes mouse support in Cannon Fodder).
* improved Justifier emulation (fixes gun support in Lethal Enforcers 2).
* improved 6-Buttons control pad emulation (fixes Duke Nukem 3D)
* modified lightgun emulation to use common key inputs for all devices.
* 2-buttons controller is now picked by default for Master System games.
[Core/MD]
---------------
* added copy-protection hardware emulation for some new dumped games (Tiny Toon Adventures 3, Mighty Morphin Power Rangers & The Battle of Red Cliffs).
* added Game Toshokan in EEPROM database (verified on real cartridge).
* fixed Micro Machines 2 - Turbo Tournament EEPROM size (verified on real cartridge).
* modified SRAM banswitch hardware emulation to be more compatible with some hacks.
[Core/MS]
---------------
* added Cyborg Z to Korean mapper database.
[Core/GG]
---------------
* added 93C46 EEPROM emulation (Majors Pro Baseball, World Series Baseball & World Series Baseball 95).
[Core/General]
---------------
* added support for .mdx ROM format.
* added Game Gear & SG-1000 ROM support.
* added accurate emulation of SG-1000, Master System (I, II) & Game Gear hardware models for 100% compatibility.
* updated to new Genesis Plus license (see http://cgfm2.emuviews.com/)
* removed DOS port
* various code cleanup.
[Gamecube/Wii]
---------------
* IMPORTANT: cheats, screenshots & save files are now stored in console-specific directories (ex: /snaps/md, /cheats/ms, /saves/gg, ...)
* added 8-bit Action Replay & Game Genie codes support (for Master System & Game Gear games).
* improved audio/video synchronization for PAL games in 50Hz TV modes (now use VSYNC like NTSC games in 60hz modes).
* improved gun cursor positioning accuracy.
* improved horizontal scaling & screenshots rendering in H32 mode.
* fixed a bug with ROM file extension handling that would affect cheats, snapshots, sram & savestate files.
* removed ARAM/injected ROM support (unused).
* removed WPAD_ and PAD_ update from VSYNC callback.
* increased GCC inlining limits for some speed improvment.
* compiled with devkitPPC r24 & libogc 1.8.7.
2011-08-07 19:49:46 +02:00
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extern void parse_satb_tms(int line);
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2011-07-14 00:49:52 +02:00
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extern void parse_satb_m4(int line);
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extern void parse_satb_m5(int line);
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extern void update_bg_pattern_cache_m4(int index);
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extern void update_bg_pattern_cache_m5(int index);
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----------------------
Genesis Plus GX 1.6.0
----------------------
[Core/Sound]
---------------
* added YM2413 emulation in Master System compatibility mode.
* fixed SN76489 noise boost initialization.
* minor YM2612 core optimizations.
[Core/VDP]
---------------
* added accurate emulation of SG-1000, Master System (315-5124, 315-5246) & Game Gear VDP.
* added support for all TMS9918 rendering modes.
* improved Mega Drive VDP timings accuracy in Master System Compatibility mode.
* fixed color palette initialization.
* fixed shifted sprites rendering in Mode 4.
* modified pixel rendering support (pixel depth is now forced at compilation time).
[Core/CPU]
---------------
* optimized 68k core (rewrote 68k interrupt handling, removed multiple CPU types support & unused code) for 5~8% speed improvment
[Core/IO]
---------------
* added accurate emulation of Master System (315-5216, 315-5237, 315-5297) & Game Gear I/O controllers.
* added Terebi Oekaki tablet emulation.
* improved Mouse emulation (fixes mouse support in Cannon Fodder).
* improved Justifier emulation (fixes gun support in Lethal Enforcers 2).
* improved 6-Buttons control pad emulation (fixes Duke Nukem 3D)
* modified lightgun emulation to use common key inputs for all devices.
* 2-buttons controller is now picked by default for Master System games.
[Core/MD]
---------------
* added copy-protection hardware emulation for some new dumped games (Tiny Toon Adventures 3, Mighty Morphin Power Rangers & The Battle of Red Cliffs).
* added Game Toshokan in EEPROM database (verified on real cartridge).
* fixed Micro Machines 2 - Turbo Tournament EEPROM size (verified on real cartridge).
* modified SRAM banswitch hardware emulation to be more compatible with some hacks.
[Core/MS]
---------------
* added Cyborg Z to Korean mapper database.
[Core/GG]
---------------
* added 93C46 EEPROM emulation (Majors Pro Baseball, World Series Baseball & World Series Baseball 95).
[Core/General]
---------------
* added support for .mdx ROM format.
* added Game Gear & SG-1000 ROM support.
* added accurate emulation of SG-1000, Master System (I, II) & Game Gear hardware models for 100% compatibility.
* updated to new Genesis Plus license (see http://cgfm2.emuviews.com/)
* removed DOS port
* various code cleanup.
[Gamecube/Wii]
---------------
* IMPORTANT: cheats, screenshots & save files are now stored in console-specific directories (ex: /snaps/md, /cheats/ms, /saves/gg, ...)
* added 8-bit Action Replay & Game Genie codes support (for Master System & Game Gear games).
* improved audio/video synchronization for PAL games in 50Hz TV modes (now use VSYNC like NTSC games in 60hz modes).
* improved gun cursor positioning accuracy.
* improved horizontal scaling & screenshots rendering in H32 mode.
* fixed a bug with ROM file extension handling that would affect cheats, snapshots, sram & savestate files.
* removed ARAM/injected ROM support (unused).
* removed WPAD_ and PAD_ update from VSYNC callback.
* increased GCC inlining limits for some speed improvment.
* compiled with devkitPPC r24 & libogc 1.8.7.
2011-08-07 19:49:46 +02:00
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extern void color_update_m4(int index, unsigned int data);
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extern void color_update_m5(int index, unsigned int data);
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2011-07-14 00:49:52 +02:00
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/* Function pointers */
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2013-10-20 20:53:33 +02:00
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extern void (*render_bg)(int line);
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extern void (*render_obj)(int line);
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2011-07-14 00:49:52 +02:00
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extern void (*parse_satb)(int line);
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extern void (*update_bg_pattern_cache)(int index);
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#endif /* _RENDER_H_ */
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