mirror of
https://github.com/RaySollium99/picodrive.git
synced 2025-09-05 15:27:46 -04:00
sms vdp, add zoomed sprites, column vscroll blocking, mode 2 graphics
This commit is contained in:
kub
parent
032c76a3a2
commit
0df7401c02
5 changed files with 360 additions and 95 deletions
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@ -212,7 +212,7 @@ void PDebugShowPalette(unsigned short *screen, int stride)
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Pico.m.dirtyPal = 1;
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if (PicoIn.AHW & PAHW_SMS)
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PicoDoHighPal555M4();
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PicoDoHighPal555SMS();
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else
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PicoDoHighPal555(1, 0, est);
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Pico.m.dirtyPal = 1;
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@ -1988,7 +1988,7 @@ void PicoDrawUpdateHighPal(void)
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sh = 0; // no s/h support
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if (PicoIn.AHW & PAHW_SMS)
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PicoDoHighPal555M4();
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PicoDoHighPal555SMS();
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else if (FinalizeLine == FinalizeLine8bit)
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PicoDoHighPal555_8bit(sh, 0, est);
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else
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@ -2027,7 +2027,7 @@ void PicoDrawSetOutFormat(pdso_t which, int use_32x_line_mode)
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}
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if (PicoIn.AHW & PAHW_32X)
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PicoDrawSetOutFormat32x(which, use_32x_line_mode);
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PicoDrawSetOutputMode4(which);
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PicoDrawSetOutputSMS(which);
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rendstatus_old = -1;
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Pico.m.dirtyPal = 1;
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}
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@ -2038,7 +2038,7 @@ void PicoDrawSetOutBufMD(void *dest, int increment)
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// kludge for no-copy mode, using ALT_RENDERER layout
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PicoDrawSetInternalBuf(dest, increment);
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} else if (FinalizeLine == NULL) {
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PicoDrawSetInternalBuf(dest, increment); // needed for Mode4
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PicoDrawSetInternalBuf(dest, increment); // needed for SMS
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PicoDraw2SetOutBuf(dest, increment);
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} else if (dest != NULL) {
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DrawLineDestBase = dest;
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431
pico/mode4.c
431
pico/mode4.c
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@ -1,40 +1,45 @@
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/*
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* mode4/SMS renderer
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* SMS renderer
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* (C) notaz, 2009-2010
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* (C) kub, 2021
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*
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* currently supports VDP mode 4 (SMS and GG) and mode 2
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*
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* This work is licensed under the terms of MAME license.
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* See COPYING file in the top-level directory.
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*/
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/*
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* TODO:
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* - TMS9918 modes?
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* - gg mode?
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* - column scroll (reg 0 bit7)
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* - 224/240 line modes
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* - doubled sprites
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* - other TMS9918 modes?
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*/
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#include "pico_int.h"
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#include <platform/common/upscale.h>
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static void (*FinalizeLineM4)(int line);
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static void (*FinalizeLineSMS)(int line);
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static int skip_next_line;
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static int screen_offset, line_offset;
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static void TileBGM4(int sx, int pal)
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/* Mode 4 */
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/*========*/
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static void TileBGM4(u16 sx, int pal)
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{
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u32 *pd = (u32 *)(Pico.est.HighCol + sx);
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pd[0] = pd[1] = pal ? 0x10101010 : 0;
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}
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// 8 pixels are arranged to have 1 bit in each byte of a 32 bit word. To pull
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// the 4 bitplanes together multiply with each bit distance (multiples of 1<<7)
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#define PLANAR_PIXELL(x,p) \
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t = pack & (0x80808080 >> p); \
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t = ((t >> (7-p)) | (t >> (14-p)) | (t >> (21-p)) | (t >> (28-p))) & 0x0f; \
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t = (pack>>(7-p)) & 0x01010101; \
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t = (t*0x10204080) >> 28; \
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pd[x] = pal|t;
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static void TileNormM4Low(int sx, unsigned int pack, int pal)
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static void TileNormLowM4(u16 sx, unsigned int pack, int pal)
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{
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unsigned char *pd = Pico.est.HighCol + sx;
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unsigned int t;
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u8 *pd = Pico.est.HighCol + sx;
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u32 t;
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PLANAR_PIXELL(0, 0)
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PLANAR_PIXELL(1, 1)
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@ -46,10 +51,10 @@ static void TileNormM4Low(int sx, unsigned int pack, int pal)
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PLANAR_PIXELL(7, 7)
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}
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static void TileFlipM4Low(int sx, unsigned int pack, int pal)
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static void TileFlipLowM4(u16 sx, unsigned int pack, int pal)
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{
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unsigned char *pd = Pico.est.HighCol + sx;
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unsigned int t;
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u8 *pd = Pico.est.HighCol + sx;
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u32 t;
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PLANAR_PIXELL(0, 7)
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PLANAR_PIXELL(1, 6)
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@ -62,16 +67,16 @@ static void TileFlipM4Low(int sx, unsigned int pack, int pal)
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}
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#define PLANAR_PIXEL(x,p) \
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t = pack & (0x80808080 >> p); \
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t = (pack>>(7-p)) & 0x01010101; \
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if (t) { \
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t = ((t >> (7-p)) | (t >> (14-p)) | (t >> (21-p)) | (t >> (28-p))) & 0x0f; \
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t = (t*0x10204080) >> 28; \
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pd[x] = pal|t; \
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}
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static void TileNormM4(int sx, unsigned int pack, int pal)
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static void TileNormM4(u16 sx, unsigned int pack, int pal)
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{
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unsigned char *pd = Pico.est.HighCol + sx;
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unsigned int t;
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u8 *pd = Pico.est.HighCol + sx;
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u32 t;
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PLANAR_PIXEL(0, 0)
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PLANAR_PIXEL(1, 1)
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@ -83,10 +88,10 @@ static void TileNormM4(int sx, unsigned int pack, int pal)
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PLANAR_PIXEL(7, 7)
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}
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static void TileFlipM4(int sx, unsigned int pack, int pal)
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static void TileFlipM4(u16 sx, unsigned int pack, int pal)
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{
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unsigned char *pd = Pico.est.HighCol + sx;
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unsigned int t;
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u8 *pd = Pico.est.HighCol + sx;
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u32 t;
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PLANAR_PIXEL(0, 7)
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PLANAR_PIXEL(1, 6)
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@ -98,34 +103,59 @@ static void TileFlipM4(int sx, unsigned int pack, int pal)
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PLANAR_PIXEL(7, 0)
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}
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static void draw_sprites(int scanline)
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static void TileDoubleM4(int sx, unsigned int pack, int pal)
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{
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u8 *pd = Pico.est.HighCol + sx;
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u32 t;
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PLANAR_PIXEL(0, 0)
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PLANAR_PIXEL(1, 0)
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PLANAR_PIXEL(2, 1)
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PLANAR_PIXEL(3, 1)
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PLANAR_PIXEL(4, 2)
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PLANAR_PIXEL(5, 2)
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PLANAR_PIXEL(6, 3)
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PLANAR_PIXEL(7, 3)
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PLANAR_PIXEL(8, 4)
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PLANAR_PIXEL(9, 4)
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PLANAR_PIXEL(10, 5)
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PLANAR_PIXEL(11, 5)
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PLANAR_PIXEL(12, 6)
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PLANAR_PIXEL(13, 6)
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PLANAR_PIXEL(14, 7)
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PLANAR_PIXEL(15, 7)
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}
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static void DrawSpritesM4(int scanline)
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{
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struct PicoVideo *pv = &Pico.video;
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unsigned int sprites_addr[8];
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unsigned int sprites_x[8];
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unsigned int pack;
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unsigned char *sat;
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u8 *sat;
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int xoff = 8; // relative to HighCol, which is (screen - 8)
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int sprite_base, addr_mask;
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int zoomed = pv->reg[1] & 0x1; // zoomed sprites, e.g. Earthworm Jim
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int i, s, h;
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if (pv->reg[0] & 8)
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xoff = 0;
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xoff += line_offset;
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sat = (unsigned char *)PicoMem.vram + ((pv->reg[5] & 0x7e) << 7);
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sat = (u8 *)PicoMem.vram + ((pv->reg[5] & 0x7e) << 7);
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if (pv->reg[1] & 2) {
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addr_mask = 0xfe; h = 16;
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} else {
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addr_mask = 0xff; h = 8;
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}
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if (zoomed) h *= 2;
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sprite_base = (pv->reg[6] & 4) << (13-2-1);
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for (i = s = 0; i < 64; i++)
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{
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int y;
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y = sat[MEM_LE2(i)] + 1;
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if (y == 0xd1)
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y = (sat[MEM_LE2(i)] + 1) & 0xff;
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if (y == 0xd1 && !((pv->reg[0] & 6) == 6 && (pv->reg[1] & 0x18)))
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break;
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if (y + h <= scanline || scanline < y)
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continue; // not on this line
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@ -136,7 +166,7 @@ static void draw_sprites(int scanline)
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sprites_x[s] = xoff + sat[MEM_LE2(0x80 + i*2)];
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sprites_addr[s] = sprite_base + ((sat[MEM_LE2(0x80 + i*2 + 1)] & addr_mask) << (5-1)) +
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((scanline - y) << (2-1));
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((scanline - y) >> zoomed << (2-1));
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s++;
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}
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@ -147,30 +177,32 @@ static void draw_sprites(int scanline)
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// now draw all sprites backwards
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for (--s; s >= 0; s--) {
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pack = CPU_LE2(*(u32 *)(PicoMem.vram + sprites_addr[s]));
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TileNormM4(sprites_x[s], pack, 0x10);
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if (zoomed) TileDoubleM4(sprites_x[s], pack, 0x10);
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else TileNormM4(sprites_x[s], pack, 0x10);
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}
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}
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// tilex_ty_prio merged to reduce register pressure
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static void draw_strip_low(const unsigned short *nametab, int dx, int cells, int tilex_ty_prio)
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// cells_dx, tilex_ty merged to reduce register pressure
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static void DrawStripLowM4(const u16 *nametab, int cells_dx, int tilex_ty)
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{
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int oldcode = -1;
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int addr = 0, pal = 0;
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// Draw tiles across screen:
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for (; cells > 0; dx += 8, tilex_ty_prio++, cells--)
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for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000)
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{
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unsigned int pack;
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unsigned code;
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code = nametab[tilex_ty_prio & 0x1f];
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code = nametab[tilex_ty& 0x1f];
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if (code & 0x1000) // priority high?
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continue;
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if (code != oldcode) {
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oldcode = code;
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// Get tile address/2:
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addr = (code & 0x1ff) << 4;
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addr += tilex_ty_prio >> 16;
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addr += tilex_ty>> 16;
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if (code & 0x0400)
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addr ^= 0xe; // Y-flip
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@ -178,34 +210,34 @@ static void draw_strip_low(const unsigned short *nametab, int dx, int cells, int
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}
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pack = CPU_LE2(*(u32 *)(PicoMem.vram + addr)); /* Get 4 bitplanes / 8 pixels */
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if (pack == 0) TileBGM4(dx, pal);
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else if (code & 0x0200) TileFlipM4Low(dx, pack, pal);
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else TileNormM4Low(dx, pack, pal);
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if (pack == 0) TileBGM4(cells_dx, pal);
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else if (code & 0x0200) TileFlipLowM4(cells_dx, pack, pal);
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else TileNormLowM4(cells_dx, pack, pal);
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}
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}
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// tilex_ty_prio merged to reduce register pressure
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static void draw_strip_high(const unsigned short *nametab, int dx, int cells, int tilex_ty_prio)
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static void DrawStripHighM4(const u16 *nametab, int cells_dx, int tilex_ty)
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{
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int oldcode = -1, blank = -1; // The tile we know is blank
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int addr = 0, pal = 0;
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// Draw tiles across screen:
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for (; cells > 0; dx += 8, tilex_ty_prio++, cells--)
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for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000)
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{
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unsigned int pack;
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unsigned code;
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code = nametab[tilex_ty_prio & 0x1f];
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code = nametab[tilex_ty& 0x1f];
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if (code == blank)
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continue;
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if ((code ^ tilex_ty_prio) & 0x1000) // priority differs?
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if (!(code & 0x1000)) // priority low?
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continue;
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if (code != oldcode) {
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oldcode = code;
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// Get tile address/2:
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addr = (code & 0x1ff) << 4;
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addr += tilex_ty_prio >> 16;
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addr += tilex_ty>> 16;
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if (code & 0x0400)
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addr ^= 0xe; // Y-flip
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@ -217,15 +249,15 @@ static void draw_strip_high(const unsigned short *nametab, int dx, int cells, in
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blank = code;
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continue;
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}
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if (code & 0x0200) TileFlipM4(dx, pack, pal);
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else TileNormM4(dx, pack, pal);
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if (code & 0x0200) TileFlipM4(cells_dx, pack, pal);
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else TileNormM4(cells_dx, pack, pal);
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}
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}
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static void DrawDisplayM4(int scanline)
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{
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struct PicoVideo *pv = &Pico.video;
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unsigned short *nametab;
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u16 *nametab, *nametab2;
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int line, tilex, dx, ty, cells;
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int cellskip = 0; // XXX
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int maxcells = 32;
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@ -236,6 +268,7 @@ static void DrawDisplayM4(int scanline)
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// Find name table:
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nametab = PicoMem.vram;
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if ((pv->reg[0] & 6) == 6 && (pv->reg[1] & 0x18)) {
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// 224/240 line mode
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line &= 0xff;
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nametab += ((pv->reg[2] & 0x0c) << (10-1)) + (0x700 >> 1);
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} else {
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@ -244,11 +277,12 @@ static void DrawDisplayM4(int scanline)
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// old SMS only, masks line:7 with reg[2]:0 for address calculation
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//if ((pv->reg[2] & 0x01) == 0) line &= 0x7f;
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}
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nametab += (line>>3) << (6-1);
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nametab2 = nametab + ((scanline>>3) << (6-1));
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nametab = nametab + ((line>>3) << (6-1));
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dx = pv->reg[8]; // hscroll
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if (scanline < 16 && (pv->reg[0] & 0x40))
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dx = 0; // hscroll disabled for top 2 rows
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dx = 0; // hscroll disabled for top 2 rows (e.g. Fantasy Zone II)
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tilex = ((-dx >> 3) + cellskip) & 0x1f;
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ty = (line & 7) << 1; // Y-Offset into tile
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@ -261,41 +295,250 @@ static void DrawDisplayM4(int scanline)
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dx += line_offset;
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// low priority tiles
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if (!(pv->debug_p & PVD_KILL_B))
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draw_strip_low(nametab, dx, cells, tilex | 0x0000 | (ty << 16));
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if (!(pv->debug_p & PVD_KILL_B)) {
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if (pv->reg[0] & 0x80) {
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// vscroll disabled for rightmost 8 columns (e.g. Gauntlet)
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int dx2 = dx + (cells-8)*8, tilex2 = tilex + (cells-8), ty2 = scanline & 7;
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DrawStripLowM4(nametab, dx | ((cells-8) << 16), tilex | (ty << 16));
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DrawStripLowM4(nametab2, dx2 | (8 << 16), tilex2 | (ty2 << 17));
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} else
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DrawStripLowM4(nametab , dx | ( cells << 16), tilex | (ty << 16));
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}
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// sprites
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if (!(pv->debug_p & PVD_KILL_S_LO))
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draw_sprites(scanline);
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DrawSpritesM4(scanline);
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// high priority tiles (use virtual layer switch just for fun)
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if (!(pv->debug_p & PVD_KILL_A))
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draw_strip_high(nametab, dx, cells, tilex | 0x1000 | (ty << 16));
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if (!(pv->debug_p & PVD_KILL_A)) {
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if (pv->reg[0] & 0x80) {
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int dx2 = dx + (cells-8)*8, tilex2 = tilex + (cells-8), ty2 = scanline & 7;
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DrawStripHighM4(nametab, dx | ((cells-8) << 16), tilex | (ty << 16));
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DrawStripHighM4(nametab2, dx2 | (8 << 16), tilex2 | (ty2 << 17));
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} else
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DrawStripHighM4(nametab , dx | ( cells << 16), tilex | (ty << 16));
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}
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if (pv->reg[0] & 0x20) {
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// first column masked, caculate offset to start of line
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// first column masked with background, caculate offset to start of line
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dx = (dx&~0x1f) / 4;
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((u32 *)Pico.est.HighCol)[dx+2] = ((u32 *)Pico.est.HighCol)[dx+3] = 0xe0e0e0e0;
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ty = 0xe0e0e0e0; // really (pv->reg[7]&0x3f) * 0x01010101, but the looks...
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((u32 *)Pico.est.HighCol)[dx+2] = ((u32 *)Pico.est.HighCol)[dx+3] = ty;
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}
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}
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static void FinalizeLineRGB555M4(int line);
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void PicoFrameStartMode4(void)
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/* Mode 2 */
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/*========*/
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/* Background */
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#define TMS_PIXELBG(x,p) \
|
||||
t = (pack>>(7-p)) & 0x01; \
|
||||
t = (pal >> (t << 2)) & 0x0f; \
|
||||
pd[x] = t;
|
||||
|
||||
static void TileNormBgM2(u16 sx, unsigned int pack, int pal)
|
||||
{
|
||||
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)
|
||||
TMS_PIXELBG(6, 6)
|
||||
TMS_PIXELBG(7, 7)
|
||||
}
|
||||
|
||||
/* Sprites */
|
||||
|
||||
#define TMS_PIXELSP(x,p) \
|
||||
t = (pack>>(7-p)) & 0x01; \
|
||||
if (t) \
|
||||
pd[x] = pal;
|
||||
|
||||
static void TileNormSprM2(u16 sx, unsigned int pack, int pal)
|
||||
{
|
||||
u8 *pd = Pico.est.HighCol + sx;
|
||||
unsigned int t;
|
||||
|
||||
TMS_PIXELSP(0, 0)
|
||||
TMS_PIXELSP(1, 1)
|
||||
TMS_PIXELSP(2, 2)
|
||||
TMS_PIXELSP(3, 3)
|
||||
TMS_PIXELSP(4, 4)
|
||||
TMS_PIXELSP(5, 5)
|
||||
TMS_PIXELSP(6, 6)
|
||||
TMS_PIXELSP(7, 7)
|
||||
}
|
||||
|
||||
static void TileDoubleSprM2(u16 sx, unsigned int pack, int pal)
|
||||
{
|
||||
u8 *pd = Pico.est.HighCol + sx;
|
||||
unsigned int t;
|
||||
|
||||
TMS_PIXELSP(0, 0)
|
||||
TMS_PIXELSP(1, 0)
|
||||
TMS_PIXELSP(2, 1)
|
||||
TMS_PIXELSP(3, 1)
|
||||
TMS_PIXELSP(4, 2)
|
||||
TMS_PIXELSP(5, 2)
|
||||
TMS_PIXELSP(6, 3)
|
||||
TMS_PIXELSP(7, 3)
|
||||
TMS_PIXELSP(8, 4)
|
||||
TMS_PIXELSP(9, 4)
|
||||
TMS_PIXELSP(10, 5)
|
||||
TMS_PIXELSP(11, 5)
|
||||
TMS_PIXELSP(12, 6)
|
||||
TMS_PIXELSP(13, 6)
|
||||
TMS_PIXELSP(14, 7)
|
||||
TMS_PIXELSP(15, 7)
|
||||
}
|
||||
|
||||
/* Draw sprites into a scanline, max 4 */
|
||||
static void DrawSpritesM2(int scanline)
|
||||
{
|
||||
struct PicoVideo *pv = &Pico.video;
|
||||
unsigned int sprites_addr[4];
|
||||
unsigned int sprites_x[4];
|
||||
unsigned int pack;
|
||||
u8 *sat;
|
||||
int xoff = 8; // relative to HighCol, which is (screen - 8)
|
||||
int sprite_base, addr_mask;
|
||||
int zoomed = pv->reg[1] & 0x1; // zoomed sprites
|
||||
int i, s, h;
|
||||
|
||||
xoff += line_offset;
|
||||
|
||||
sat = (u8 *)PicoMem.vramb + ((pv->reg[5] & 0x7e) << 7);
|
||||
if (pv->reg[1] & 2) {
|
||||
addr_mask = 0xfc; h = 16;
|
||||
} else {
|
||||
addr_mask = 0xff; h = 8;
|
||||
}
|
||||
if (zoomed) h *= 2;
|
||||
|
||||
sprite_base = (pv->reg[6] & 0x7) << 11;
|
||||
|
||||
/* find sprites on this scanline */
|
||||
for (i = s = 0; i < 32; i++)
|
||||
{
|
||||
int y;
|
||||
y = (sat[MEM_LE2(4*i)] + 1) & 0xff;
|
||||
if (y == 0xd1)
|
||||
break;
|
||||
if (y > 0xe0)
|
||||
y -= 256;
|
||||
if (y + h <= scanline || scanline < y)
|
||||
continue; // not on this line
|
||||
if (s >= 4) {
|
||||
pv->status |= SR_SOVR | i;
|
||||
break;
|
||||
}
|
||||
|
||||
sprites_x[s] = 4*i;
|
||||
sprites_addr[s] = sprite_base + ((sat[MEM_LE2(4*i + 2)] & addr_mask) << 3) +
|
||||
((scanline - y) >> zoomed);
|
||||
s++;
|
||||
}
|
||||
|
||||
// really half-assed but better than nothing
|
||||
if (s > 1)
|
||||
pv->status |= SR_C;
|
||||
|
||||
// now draw all sprites backwards
|
||||
for (--s; s >= 0; s--) {
|
||||
int x, w = (zoomed ? 16: 8);
|
||||
i = sprites_x[s];
|
||||
x = sat[MEM_LE2(i+1)] + xoff;
|
||||
if (sat[MEM_LE2(i+3)] & 0x80)
|
||||
x -= 32;
|
||||
if (x > 0) {
|
||||
pack = PicoMem.vramb[MEM_LE2(sprites_addr[s])];
|
||||
if (zoomed) TileDoubleSprM2(x, pack, sat[MEM_LE2(i+3)] & 0xf);
|
||||
else TileNormSprM2(x, pack, sat[MEM_LE2(i+3)] & 0xf);
|
||||
}
|
||||
if((pv->reg[1] & 0x2) && (x+=w) > 0) {
|
||||
pack = PicoMem.vramb[MEM_LE2(sprites_addr[s]+0x10)];
|
||||
if (zoomed) TileDoubleSprM2(x, pack, sat[MEM_LE2(i+3)] & 0xf);
|
||||
else TileNormSprM2(x, pack, sat[MEM_LE2(i+3)] & 0xf);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* 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)
|
||||
{
|
||||
// Draw tiles across screen:
|
||||
for (; cells_dx > 0; cells_dx += 8, tilex_ty++, cells_dx -= 0x10000)
|
||||
{
|
||||
unsigned int pack, pal;
|
||||
unsigned code;
|
||||
|
||||
code = nametab[tilex_ty& 0x1f] << 3;
|
||||
pal = coltab[code];
|
||||
pack = pattab[code];
|
||||
TileNormBgM2(cells_dx, pack, pal);
|
||||
}
|
||||
}
|
||||
|
||||
/* Draw a scanline */
|
||||
static void DrawDisplayM2(int scanline)
|
||||
{
|
||||
struct PicoVideo *pv = &Pico.video;
|
||||
u8 *nametab, *coltab, *pattab;
|
||||
int tilex, dx, cells;
|
||||
int cellskip = 0; // XXX
|
||||
int maxcells = 32;
|
||||
|
||||
// name, color, pattern table:
|
||||
nametab = PicoMem.vramb + ((pv->reg[2]<<10) & 0x3c00);
|
||||
coltab = PicoMem.vramb + ((pv->reg[3]<< 6) & 0x2000);
|
||||
pattab = PicoMem.vramb + ((pv->reg[4]<<11) & 0x2000);
|
||||
|
||||
nametab += ((scanline>>3) << 5);
|
||||
coltab += ((scanline>>6) <<11) + (scanline & 0x7);
|
||||
pattab += ((scanline>>6) <<11) + (scanline & 0x7);
|
||||
|
||||
tilex = cellskip & 0x1f;
|
||||
cells = maxcells - cellskip;
|
||||
dx = (cellskip << 3) + line_offset + 8;
|
||||
|
||||
// tiles
|
||||
if (!(pv->debug_p & PVD_KILL_B))
|
||||
DrawStripM2(nametab, coltab, pattab, dx | (cells << 16), tilex | (scanline << 16));
|
||||
|
||||
// sprites
|
||||
if (!(pv->debug_p & PVD_KILL_S_LO))
|
||||
DrawSpritesM2(scanline);
|
||||
}
|
||||
|
||||
|
||||
/* Common/global */
|
||||
/*===============*/
|
||||
|
||||
static void FinalizeLineRGB555SMS(int line);
|
||||
|
||||
void PicoFrameStartSMS(void)
|
||||
{
|
||||
int lines = 192, columns = 256, coffs;
|
||||
skip_next_line = 0;
|
||||
screen_offset = 24;
|
||||
Pico.est.rendstatus = PDRAW_32_COLS;
|
||||
|
||||
if ((Pico.video.reg[0] & 6) == 6 && (Pico.video.reg[1] & 0x18)) {
|
||||
if (Pico.video.reg[1] & 0x08) {
|
||||
switch ((Pico.video.reg[0]&0x06) | (Pico.video.reg[1]&0x18)) {
|
||||
// SMS2 only 224/240 line modes, e.g. Micro Machines
|
||||
case 0x06|0x08:
|
||||
screen_offset = 0;
|
||||
lines = 240;
|
||||
}
|
||||
else {
|
||||
break;
|
||||
case 0x06|0x10:
|
||||
screen_offset = 8;
|
||||
lines = 224;
|
||||
}
|
||||
break;
|
||||
}
|
||||
if (PicoIn.opt & POPT_EN_SOFTSCALE) {
|
||||
line_offset = 0;
|
||||
|
|
@ -304,7 +547,7 @@ void PicoFrameStartMode4(void)
|
|||
line_offset = PicoIn.opt & POPT_DIS_32C_BORDER ? 0 : 32;
|
||||
|
||||
coffs = line_offset;
|
||||
if (FinalizeLineM4 == FinalizeLineRGB555M4)
|
||||
if (FinalizeLineSMS == FinalizeLineRGB555SMS)
|
||||
line_offset = 0 /* done in FinalizeLine */;
|
||||
|
||||
if (Pico.est.rendstatus != rendstatus_old || lines != rendlines) {
|
||||
|
|
@ -317,7 +560,7 @@ void PicoFrameStartMode4(void)
|
|||
Pico.est.DrawLineDest = (char *)DrawLineDestBase + screen_offset * DrawLineDestIncrement;
|
||||
}
|
||||
|
||||
void PicoLineMode4(int line)
|
||||
void PicoLineSMS(int line)
|
||||
{
|
||||
if (skip_next_line > 0) {
|
||||
skip_next_line--;
|
||||
|
|
@ -329,11 +572,13 @@ void PicoLineMode4(int line)
|
|||
|
||||
// Draw screen:
|
||||
BackFill(Pico.video.reg[7] & 0x0f, 0, &Pico.est);
|
||||
if (Pico.video.reg[1] & 0x40)
|
||||
DrawDisplayM4(line);
|
||||
if (Pico.video.reg[1] & 0x40) {
|
||||
if (Pico.video.reg[0] & 0x04) DrawDisplayM4(line);
|
||||
else DrawDisplayM2(line);
|
||||
}
|
||||
|
||||
if (FinalizeLineM4 != NULL)
|
||||
FinalizeLineM4(line);
|
||||
if (FinalizeLineSMS != NULL)
|
||||
FinalizeLineSMS(line);
|
||||
|
||||
if (PicoScanEnd != NULL)
|
||||
skip_next_line = PicoScanEnd(line + screen_offset);
|
||||
|
|
@ -342,7 +587,12 @@ void PicoLineMode4(int line)
|
|||
Pico.est.DrawLineDest = (char *)Pico.est.DrawLineDest + DrawLineDestIncrement;
|
||||
}
|
||||
|
||||
void PicoDoHighPal555M4(void)
|
||||
/* Fixed palette for TMS9918 modes */
|
||||
static u16 tmspal[32] = {
|
||||
0x00,0x00,0x08,0x0c,0x10,0x30,0x01,0x3c,0x02,0x03,0x05,0x0f,0x04,0x33,0x15,0x3f
|
||||
};
|
||||
|
||||
void PicoDoHighPal555SMS(void)
|
||||
{
|
||||
unsigned int *spal=(void *)PicoMem.cram;
|
||||
unsigned int *dpal=(void *)Pico.est.HighPal;
|
||||
|
|
@ -350,9 +600,11 @@ void PicoDoHighPal555M4(void)
|
|||
int i;
|
||||
|
||||
Pico.m.dirtyPal = 0;
|
||||
if (!(Pico.video.reg[0] & 0x4))
|
||||
spal = (u32 *)tmspal;
|
||||
|
||||
/* cram is always stored as shorts, even though real hardware probably uses bytes */
|
||||
for (i = 0x20/2; i > 0; i--, spal++, dpal++) {
|
||||
if (PicoIn.AHW & PAHW_SMS) for (i = 0x20/2; i > 0; i--, spal++, dpal++) {
|
||||
t = *spal;
|
||||
#if defined(USE_BGR555)
|
||||
t = ((t & 0x00030003)<< 3) | ((t & 0x000c000c)<<6) | ((t & 0x00300030)<<9);
|
||||
|
|
@ -363,42 +615,55 @@ void PicoDoHighPal555M4(void)
|
|||
#else
|
||||
t = ((t & 0x00030003)<<14) | ((t & 0x000c000c)<<7) | ((t & 0x00300030)>>1);
|
||||
t |= (t >> 2) | ((t >> 4) & 0x08610861);
|
||||
#endif
|
||||
*dpal = t;
|
||||
} else for (i = 0x20/2; i > 0; i--, spal++, dpal++) { // GG palette 4 bit/col
|
||||
t = *spal;
|
||||
#if defined(USE_BGR555)
|
||||
t = ((t & 0x000f000f)<< 1) | ((t & 0x00f000f0)<<2) | ((t & 0x0f000f00)<<3);
|
||||
t |= (t >> 4) & 0x04210421;
|
||||
#elif defined(USE_BGR565)
|
||||
t = ((t & 0x000f000f)<< 1) | ((t & 0x00f000f0)<<3) | ((t & 0x0f000f00)<<4);
|
||||
t |= (t >> 4) & 0x08610861;
|
||||
#else
|
||||
t = ((t & 0x000f000f)<<12) | ((t & 0x00f000f0)<<3) | ((t & 0x0f000f00)>>7);
|
||||
t |= (t >> 4) & 0x08610861;
|
||||
#endif
|
||||
*dpal = t;
|
||||
}
|
||||
Pico.est.HighPal[0xe0] = 0;
|
||||
}
|
||||
|
||||
static void FinalizeLineRGB555M4(int line)
|
||||
static void FinalizeLineRGB555SMS(int line)
|
||||
{
|
||||
if (Pico.m.dirtyPal)
|
||||
PicoDoHighPal555M4();
|
||||
PicoDoHighPal555SMS();
|
||||
|
||||
// standard FinalizeLine can finish it for us,
|
||||
// with features like scaling and such
|
||||
FinalizeLine555(0, line, &Pico.est);
|
||||
}
|
||||
|
||||
static void FinalizeLine8bitM4(int line)
|
||||
static void FinalizeLine8bitSMS(int line)
|
||||
{
|
||||
unsigned char *pd = Pico.est.DrawLineDest + line_offset;
|
||||
unsigned char *ps = Pico.est.HighCol + line_offset + 8;
|
||||
u8 *pd = Pico.est.DrawLineDest + line_offset;
|
||||
u8 *ps = Pico.est.HighCol + line_offset + 8;
|
||||
|
||||
if (DrawLineDestIncrement) {
|
||||
if (PicoIn.opt & POPT_EN_SOFTSCALE)
|
||||
rh_upscale_nn_4_5(pd, 320, ps, 256, 256, f_nop);
|
||||
else
|
||||
else if (pd != ps)
|
||||
memcpy(pd, ps, 256);
|
||||
}
|
||||
}
|
||||
|
||||
void PicoDrawSetOutputMode4(pdso_t which)
|
||||
void PicoDrawSetOutputSMS(pdso_t which)
|
||||
{
|
||||
switch (which)
|
||||
{
|
||||
case PDF_8BIT: FinalizeLineM4 = FinalizeLine8bitM4; break;
|
||||
case PDF_RGB555: FinalizeLineM4 = FinalizeLineRGB555M4; break;
|
||||
default: FinalizeLineM4 = NULL;
|
||||
case PDF_8BIT: FinalizeLineSMS = FinalizeLine8bitSMS; break;
|
||||
case PDF_RGB555: FinalizeLineSMS = FinalizeLineRGB555SMS; break;
|
||||
default: FinalizeLineSMS = NULL;
|
||||
PicoDrawSetInternalBuf(Pico.est.Draw2FB, 328); break;
|
||||
}
|
||||
rendstatus_old = -1;
|
||||
|
|
|
|||
|
|
@ -687,10 +687,10 @@ void PicoDraw2Init(void);
|
|||
PICO_INTERNAL void PicoFrameFull();
|
||||
|
||||
// mode4.c
|
||||
void PicoFrameStartMode4(void);
|
||||
void PicoLineMode4(int line);
|
||||
void PicoDoHighPal555M4(void);
|
||||
void PicoDrawSetOutputMode4(pdso_t which);
|
||||
void PicoFrameStartSMS(void);
|
||||
void PicoLineSMS(int line);
|
||||
void PicoDoHighPal555SMS(void);
|
||||
void PicoDrawSetOutputSMS(pdso_t which);
|
||||
|
||||
// memory.c
|
||||
PICO_INTERNAL void PicoMemSetup(void);
|
||||
|
|
|
|||
|
|
@ -402,7 +402,7 @@ void PicoFrameMS(void)
|
|||
|
||||
if ((pv->reg[0] & 6) == 6 && (pv->reg[1] & 0x18))
|
||||
lines_vis = (pv->reg[1] & 0x08) ? 240 : 224;
|
||||
PicoFrameStartMode4();
|
||||
PicoFrameStartSMS();
|
||||
hint = pv->reg[0x0a];
|
||||
|
||||
for (y = 0; y < lines; y++)
|
||||
|
|
@ -412,7 +412,7 @@ void PicoFrameMS(void)
|
|||
pv->v_counter = y - 6;
|
||||
|
||||
if (y < lines_vis && !skip)
|
||||
PicoLineMode4(y);
|
||||
PicoLineSMS(y);
|
||||
|
||||
if (y <= lines_vis)
|
||||
{
|
||||
|
|
@ -448,10 +448,10 @@ void PicoFrameDrawOnlyMS(void)
|
|||
int lines_vis = 192;
|
||||
int y;
|
||||
|
||||
PicoFrameStartMode4();
|
||||
PicoFrameStartSMS();
|
||||
|
||||
for (y = 0; y < lines_vis; y++)
|
||||
PicoLineMode4(y);
|
||||
PicoLineSMS(y);
|
||||
}
|
||||
|
||||
// vim:ts=2:sw=2:expandtab
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue