Genesis-Plus-GX/source/gx/gx_video.h
EkeEke 28775cc3aa [Core/SCD]
----------
* added Mega CD / Sega CD hardware emulation (incl. Sub 68K, CDD, CDC, PCM, GFX
rotation/scaling, etc)
* added .ISO & .BIN CD image file support
* added 512K backup cartridge RAM support
* added savestate support for CD games

NOTES:
~~~~~~
* to play CD games, original BIOS ROM files are required in /genplus/bios/
directory: unzip & rename them to bios_CD_U.bin, bios_CD_E.bin, bios_CD_J.bin
* CD audio tracks (CD-DA) are not supported (yet)

[Core/CPU]
----------
* modified 68k core for Mega CD / Sega CD support

[Core/VDP]
---------------
* improved DMA accuracy
* added support for 8-bit VRAM writes with undocumented code value (verified on
real hardware by Nemesis)

[Gamecube/Wii]
---------------
* modified Master System & Game Gear "BIOS" support (files should be named
bios_U.sms, bios_J.sms, bios_E.sms & bios.gg and copied to /genplus/bios
directory).
* replaced "Hard Reset" button by a Soft Reset for systems having a Reset button
(Mega Drive / Genesis & Master System)
* State & SRAM files are now only compressed when saving to Gamecube Memory
Cards
* various fixes & cleanup.

[Core/SCD]
----------
* added Mega CD / Sega CD hardware emulation (incl. Sub 68K, CDD, CDC, PCM, GFX
rotation/scaling, etc)
* added .ISO & .BIN CD image file support
* added 512K backup cartridge RAM support
* added savestate support for CD games

NOTES:
~~~~~~
* to play CD games, original BIOS ROM files are required in /genplus/bios/
directory: unzip & rename them to bios_CD_U.bin, bios_CD_E.bin, bios_CD_J.bin
* CD audio tracks (CD-DA) are not supported (yet)

[Core/CPU]
----------
* modified 68k core for Mega CD / Sega CD support

[Core/VDP]
---------------
* improved DMA accuracy
* added support for 8-bit VRAM writes with undocumented code value (verified on
real hardware by Nemesis)

[Gamecube/Wii]
---------------
* modified Master System & Game Gear "BIOS" support (files should be named
bios_U.sms, bios_J.sms, bios_E.sms & bios.gg and copied to /genplus/bios
directory).
* replaced "Hard Reset" button by a Soft Reset for systems having a Reset button
(Mega Drive / Genesis & Master System)
* State & SRAM files are now only compressed when saving to Gamecube Memory
Cards
* various fixes & cleanup.
2012-07-05 21:45:37 +02:00

105 lines
4.1 KiB
C

/****************************************************************************
* gx_video.c
*
* Genesis Plus GX video support
*
* Copyright Eke-Eke (2007-2012), based on original work from Softdev (2006)
*
* Redistribution and use of this code or any derivative works are permitted
* provided that the following conditions are met:
*
* - Redistributions may not be sold, nor may they be used in a commercial
* product or activity.
*
* - Redistributions that are modified from the original source must include the
* complete source code, including the source code for all components used by a
* binary built from the modified sources. However, as a special exception, the
* source code distributed need not include anything that is normally distributed
* (in either source or binary form) with the major components (compiler, kernel,
* and so on) of the operating system on which the executable runs, unless that
* component itself accompanies the executable.
*
* - Redistributions must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************************/
#ifndef _GC_VIDEO_H_
#define _GC_VIDEO_H_
/* EFB colors */
#define BLACK {0x00,0x00,0x00,0xff}
#define DARK_GREY {0x22,0x22,0x22,0xff}
#define LIGHT_BLUE {0xb8,0xc7,0xda,0xff}
#define SKY_BLUE {0x99,0xcc,0xff,0xff}
#define LIGHT_GREEN {0xa9,0xc7,0xc6,0xff}
#define WHITE {0xff,0xff,0xff,0xff}
/* Directly fill a RGB565 texture */
/* One tile is 32 byte = 4x4 pixels */
/* Tiles are stored continuously in texture memory */
#define CUSTOM_BLITTER(line, width, table, in) \
width >>= 2; \
u16 *out = (u16 *) (texturemem + (((width << 5) * (line >> 2)) + ((line & 3) << 3))); \
do \
{ \
*out++ = table[*in++]; \
*out++ = table[*in++]; \
*out++ = table[*in++]; \
*out++ = table[*in++]; \
out += 12; \
} \
while (--width);
/* image texture */
typedef struct
{
u8 *data;
u16 width;
u16 height;
u8 format;
} gx_texture;
/* Global variables */
extern GXRModeObj *vmode;
extern u8 *texturemem;
extern u32 gc_pal;
/* GX rendering */
extern void gxDrawRectangle(s32 x, s32 y, s32 w, s32 h, u8 alpha, GXColor color);
extern void gxDrawTexture(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, u8 alpha);
extern void gxDrawTextureRepeat(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, u8 alpha);
extern void gxDrawTextureRotate(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, f32 angle, u8 alpha);
extern void gxDrawScreenshot(u8 alpha);
extern void gxCopyScreenshot(gx_texture *texture);
extern void gxSaveScreenshot(char *filename);
extern void gxClearScreen(GXColor color);
extern void gxSetScreen(void);
/* PNG textures */
extern gx_texture *gxTextureOpenPNG(const u8 *png_data, FILE *png_file);
extern void gxTextureWritePNG(gx_texture *p_texture, FILE *png_file);
extern void gxTextureClose(gx_texture **p_texture);
/* GX video engine */
extern void gx_video_Init(void);
extern void gx_video_Shutdown(void);
extern void gx_video_Start(void);
extern void gx_video_Stop(void);
extern void gx_video_Update(void);
#endif