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sms, add missing TMS VDP modes

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kub 2022-02-26 09:41:38 +00:00
parent da64996b0d
commit 22917adcff
1 changed files with 150 additions and 24 deletions
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172
pico/mode4.c
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@ -3,15 +3,12 @@
* (C) notaz, 2009-2010 * (C) notaz, 2009-2010
* (C) kub, 2021 * (C) kub, 2021
* *
* currently supports VDP mode 4 (SMS and GG) and mode 2+0 (TMS) * currently supports VDP mode 4 (SMS and GG) and mode 3-0 (TMS)
* modes numbered after the bit numbers used in Sega and TI documentation
* *
* This work is licensed under the terms of MAME license. * This work is licensed under the terms of MAME license.
* See COPYING file in the top-level directory. * See COPYING file in the top-level directory.
*/ */
/*
* TODO:
* - other TMS9918 modes?
*/
#include "pico_int.h" #include "pico_int.h"
#include <platform/common/upscale.h> #include <platform/common/upscale.h>
@ -55,8 +52,8 @@ static int CollisionDetect(u8 *mb, u16 sx, unsigned int pack, int zoomed)
return col; return col;
} }
/* Mode 4 */ /* Mode 4 - SMS Graphics */
/*========*/ /*=======================*/
static void TileBGM4(u16 sx, int pal) static void TileBGM4(u16 sx, int pal)
{ {
@ -333,14 +330,44 @@ static void DrawDisplayM4(int scanline)
/* TMS Modes */ /* TMS Modes */
/*===========*/ /*===========*/
/* Background, Graphics modes */ /* Background */
#define TMS_PIXELBG(x,p) \ #define TMS_PIXELBG(x,p) \
t = (pack>>(7-p)) & 0x01; \ t = (pack>>(7-p)) & 0x01; \
t = (pal >> (t << 2)) & 0x0f; \ t = (pal >> (t << 2)) & 0x0f; \
if (t) \
pd[x] = t; pd[x] = t;
static void TileNormBgGr(u16 sx, unsigned int pack, int pal) static void TileNormBgM1(u16 sx, unsigned int pack, int pal) /* Text */
{
u8 *pd = Pico.est.HighCol + sx;
unsigned int t;
TMS_PIXELBG(0, 0)
TMS_PIXELBG(1, 1)
TMS_PIXELBG(2, 2)
TMS_PIXELBG(3, 3)
TMS_PIXELBG(4, 4)
TMS_PIXELBG(5, 5)
}
static void TileNormBgM2(u16 sx, int pal) /* Multicolor */
{
u8 *pd = Pico.est.HighCol + sx;
unsigned int pack = 0xf0;
unsigned int t;
TMS_PIXELBG(0, 0)
TMS_PIXELBG(1, 1)
TMS_PIXELBG(2, 2)
TMS_PIXELBG(3, 3)
TMS_PIXELBG(4, 4)
TMS_PIXELBG(5, 5)
TMS_PIXELBG(6, 6)
TMS_PIXELBG(7, 7)
}
static void TileNormBgMg(u16 sx, unsigned int pack, int pal) /* Graphics */
{ {
u8 *pd = Pico.est.HighCol + sx; u8 *pd = Pico.est.HighCol + sx;
unsigned int t; unsigned int t;
@ -494,11 +521,105 @@ static void DrawSpritesTMS(void)
} }
} }
/* Mode 2 */
/*========*/ /* Mode 1 - Text */
/*===============*/
/* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */ /* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */
static void DrawStripM2(const u8 *nametab, const u8 *coltab, const u8 *pattab, int cells_dx, int tilex_ty) static void DrawStripM1(const u8 *nametab, const u8 *pattab, int cells_dx, int tilex_ty)
{
// Draw tiles across screen:
for (; cells_dx > 0; cells_dx += 6, tilex_ty++, cells_dx -= 0x10000)
{
unsigned int pack, pal;
unsigned code;
code = nametab[tilex_ty & 0x3f];
pal = Pico.video.reg[7];
pack = pattab[code << 3];
TileNormBgM1(cells_dx, pack, pal);
}
}
/* Draw a scanline */
static void DrawDisplayM1(int scanline)
{
struct PicoVideo *pv = &Pico.video;
u8 *nametab, *pattab;
int tilex, dx, cells;
int cellskip = 0; // XXX
int maxcells = 40;
// name, color, pattern table:
nametab = PicoMem.vramb + ((pv->reg[2]<<10) & 0x3c00);
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & 0x3800);
nametab += ((scanline>>3) * maxcells);
pattab += (scanline & 0x7);
tilex = cellskip & 0x1f;
cells = maxcells - cellskip;
dx = (cellskip << 3) + line_offset + 8;
// tiles
if (!(pv->debug_p & PVD_KILL_B))
DrawStripM1(nametab, pattab, dx | (cells << 16), tilex | (scanline << 16));
}
/* Mode 2 - Multicolor */
/*=====================*/
/* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */
static void DrawStripM2(const u8 *nametab, const u8 *pattab, int cells_dx, int tilex_ty)
{
// Draw tiles across screen:
for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000)
{
unsigned int pal;
unsigned code;
code = nametab[tilex_ty & 0x1f];
pal = pattab[code << 3];
TileNormBgM2(cells_dx, pal);
}
}
/* Draw a scanline */
static void DrawDisplayM2(int scanline)
{
struct PicoVideo *pv = &Pico.video;
u8 *nametab, *pattab;
int tilex, dx, cells;
int cellskip = 0; // XXX
int maxcells = 32;
// name, color, pattern table:
nametab = PicoMem.vramb + ((pv->reg[2]<<10) & 0x3c00);
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & 0x3800);
nametab += (scanline>>5) << 5;
pattab += (scanline>>2) & 0x7;
tilex = cellskip & 0x1f;
cells = maxcells - cellskip;
dx = (cellskip << 3) + line_offset + 8;
// tiles
if (!(pv->debug_p & PVD_KILL_B))
DrawStripM2(nametab, pattab, dx | (cells << 16), tilex | (scanline << 16));
// sprites
if (!(pv->debug_p & PVD_KILL_S_LO))
DrawSpritesTMS();
}
/* Mode 3 - Graphics II */
/*======================*/
/* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */
static void DrawStripM3(const u8 *nametab, const u8 *coltab, const u8 *pattab, int cells_dx, int tilex_ty)
{ {
// Draw tiles across screen: // Draw tiles across screen:
for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000) for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000)
@ -509,12 +630,12 @@ static void DrawStripM2(const u8 *nametab, const u8 *coltab, const u8 *pattab, i
code = nametab[tilex_ty & 0x1f] << 3; code = nametab[tilex_ty & 0x1f] << 3;
pal = coltab[code]; pal = coltab[code];
pack = pattab[code]; pack = pattab[code];
TileNormBgGr(cells_dx, pack, pal); TileNormBgMg(cells_dx, pack, pal);
} }
} }
/* Draw a scanline */ /* Draw a scanline */
static void DrawDisplayM2(int scanline) static void DrawDisplayM3(int scanline)
{ {
struct PicoVideo *pv = &Pico.video; struct PicoVideo *pv = &Pico.video;
u8 *nametab, *coltab, *pattab; u8 *nametab, *coltab, *pattab;
@ -537,15 +658,16 @@ static void DrawDisplayM2(int scanline)
// tiles // tiles
if (!(pv->debug_p & PVD_KILL_B)) if (!(pv->debug_p & PVD_KILL_B))
DrawStripM2(nametab, coltab, pattab, dx | (cells << 16), tilex | (scanline << 16)); DrawStripM3(nametab, coltab, pattab, dx | (cells << 16), tilex | (scanline << 16));
// sprites // sprites
if (!(pv->debug_p & PVD_KILL_S_LO)) if (!(pv->debug_p & PVD_KILL_S_LO))
DrawSpritesTMS(); DrawSpritesTMS();
} }
/* Mode 0 */
/*========*/ /* Mode 0 - Graphics I */
/*=====================*/
/* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */ /* Draw the background into a scanline; cells, dx, tilex, ty merged to reduce registers */
static void DrawStripM0(const u8 *nametab, const u8 *coltab, const u8 *pattab, int cells_dx, int tilex_ty) static void DrawStripM0(const u8 *nametab, const u8 *coltab, const u8 *pattab, int cells_dx, int tilex_ty)
@ -559,7 +681,7 @@ static void DrawStripM0(const u8 *nametab, const u8 *coltab, const u8 *pattab, i
code = nametab[tilex_ty & 0x1f]; code = nametab[tilex_ty & 0x1f];
pal = coltab[code >> 3]; pal = coltab[code >> 3];
pack = pattab[code << 3]; pack = pattab[code << 3];
TileNormBgGr(cells_dx, pack, pal); TileNormBgMg(cells_dx, pack, pal);
} }
} }
@ -690,7 +812,9 @@ void PicoLineSMS(int line)
BackFill(bgcolor, 0, &Pico.est); // bgcolor is from 2nd palette in mode 4 BackFill(bgcolor, 0, &Pico.est); // bgcolor is from 2nd palette in mode 4
if (Pico.video.reg[1] & 0x40) { if (Pico.video.reg[1] & 0x40) {
if (Pico.video.reg[0] & 0x04) DrawDisplayM4(line); if (Pico.video.reg[0] & 0x04) DrawDisplayM4(line);
else if (Pico.video.reg[0] & 0x02) DrawDisplayM2(line); else if (Pico.video.reg[0] & 0x02) DrawDisplayM3(line);
else if (Pico.video.reg[1] & 0x08) DrawDisplayM2(line);
else if (Pico.video.reg[1] & 0x10) DrawDisplayM1(line);
else DrawDisplayM0(line); else DrawDisplayM0(line);
} }
@ -705,12 +829,14 @@ norender:
Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement; Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement;
} }
/* Fixed palette for TMS9918 modes */ /* Palette for TMS9918 mode, see https://www.smspower.org/Development/Palette */
// RGB values: #000000 #000000 #21c842 #5edc78 #5455ed #7d76fc #d4524d #42ebf5
// #fc5554 #ff7978 #d4c154 #e6ce80 #21b03b #c95b5a #cccccc #ffffff
static u16 tmspal[32] = { static u16 tmspal[32] = {
// SMS palette // SMS palette
0x0000, 0x0000, 0x00a0, 0x00f0, 0x0500, 0x0f00, 0x0005, 0x0ff0, // 0x0000, 0x0000, 0x00a0, 0x00f0, 0x0a00, 0x0f00, 0x0005, 0x0ff0,
0x000a, 0x000f, 0x0055, 0x00ff, 0x0050, 0x0f0f, 0x0555, 0x0fff, // 0x000a, 0x000f, 0x0055, 0x00ff, 0x0050, 0x0f0f, 0x0555, 0x0fff,
// TMS palette // GG palette
0x0000, 0x0000, 0x04c2, 0x07d5, 0x0e55, 0x0f77, 0x045d, 0x0fe4, 0x0000, 0x0000, 0x04c2, 0x07d5, 0x0e55, 0x0f77, 0x045d, 0x0fe4,
0x055f, 0x077f, 0x05cd, 0x08ce, 0x03b2, 0x0b5c, 0x0ccc, 0x0fff, 0x055f, 0x077f, 0x05cd, 0x08ce, 0x03b2, 0x0b5c, 0x0ccc, 0x0fff,
}; };