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[SNES]: Made dynamic H resolutions to be called only at vblank start and and fixed gfx mode switching 1/5 and 5/1

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This commit is contained in:
Angelo Salese 2009-08-16 13:50:08 +00:00
parent 100afe3a03
commit 74d1de9d17
2 changed files with 25 additions and 6 deletions
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6
src/mame/machine/snes.c
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@ -290,7 +290,7 @@ static TIMER_CALLBACK( snes_hblank_tick )
*************************************/
static void snes_dynamic_res_change(running_machine *machine)
static TIMER_CALLBACK( snes_dynamic_res_change )
{
rectangle visarea = *video_screen_get_visible_area(machine->primary_screen);
@ -785,7 +785,7 @@ WRITE8_HANDLER( snes_w_io )
}
case BGMODE: /* BG mode and character size settings */
snes_ppu.mode = data & 0x07;
snes_dynamic_res_change(space->machine);
timer_set(space->machine, video_screen_get_time_until_pos(space->machine->primary_screen, snes_ppu.beam.last_visible_line, 0), NULL, 0, snes_dynamic_res_change);
snes_ppu.bg3_priority_bit = data & 0x08;
snes_ppu.layer[0].tile_size = (data >> 4) & 0x1;
snes_ppu.layer[1].tile_size = (data >> 5) & 0x1;
@ -1155,7 +1155,7 @@ WRITE8_HANDLER( snes_w_io )
/* FIXME: We only support line count and interlace here */
snes_ppu.interlace = (data & 1) ? 2 : 1;
snes_ppu.beam.last_visible_line = (data & 0x4) ? 240 : 225;
snes_dynamic_res_change(space->machine);
timer_set(space->machine, video_screen_get_time_until_pos(space->machine->primary_screen, snes_ppu.beam.last_visible_line, 0), NULL, 0, snes_dynamic_res_change);
#ifdef SNES_DBG_REG_W
if( (data & 0x8) != (snes_ram[SETINI] & 0x8) )
mame_printf_debug( "Pseudo 512 mode: %s\n", (data & 0x8) ? "on" : "off" );

25
src/mame/video/snes.c
View File

@ -720,7 +720,7 @@ static void snes_update_line_mode7(UINT8 screen, UINT8 priority_a, UINT8 priorit
clr = snes_cgram[colour];
/* Only blend main screens */
if (screen == MAINSCREEN)
snes_draw_blend(xpos, &clr, snes_ppu.layer[layer].blend, snes_ppu.sub_color_mask, snes_ppu.main_color_mask);
snes_draw_blend(xpos, &clr, snes_ppu.layer[layer].blend, snes_ppu.sub_color_mask, snes_ppu.main_color_mask); /* FIXME: Need to support clip mode */
scanlines[screen].buffer[xpos] = clr;
scanlines[screen].zbuf[xpos] = priority;
@ -1151,6 +1151,7 @@ static void snes_refresh_scanline( running_machine *machine, bitmap_t *bitmap, U
int x;
int fade;
struct SCANLINE *scanline;
UINT8 halve_x;
profiler_mark(PROFILER_VIDEO);
@ -1215,12 +1216,30 @@ static void snes_refresh_scanline( running_machine *machine, bitmap_t *bitmap, U
/* Phew! Draw the line to screen */
fade = (snes_ram[INIDISP] & 0xf) + 1;
for (x = 0; x < SNES_SCR_WIDTH * snes_htmult; x++)
/* resolution line gets halved if we are inside mode 5/6 and the end resolution is 256 */
if(snes_htmult == 1 && (snes_ppu.mode == 5 || snes_ppu.mode == 6))
halve_x = 2;
else
halve_x = 1;
for (x = 0; x < SNES_SCR_WIDTH * snes_htmult * halve_x; x++)
{
int r = ((scanline->buffer[x] & 0x1f) * fade) >> 4;
int g = (((scanline->buffer[x] & 0x3e0) >> 5) * fade) >> 4;
int b = (((scanline->buffer[x] & 0x7c00) >> 10) * fade) >> 4;
*BITMAP_ADDR32(bitmap, curline, x) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
if(snes_htmult == 2 && snes_ppu.mode != 5 && snes_ppu.mode != 6)
{
*BITMAP_ADDR32(bitmap, curline, x*2+0) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
*BITMAP_ADDR32(bitmap, curline, x*2+1) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
}
else if(snes_htmult == 1 && (snes_ppu.mode == 5 || snes_ppu.mode == 6))
{
*BITMAP_ADDR32(bitmap, curline, x/2+0) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
*BITMAP_ADDR32(bitmap, curline, x/2+1) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
}
else
*BITMAP_ADDR32(bitmap, curline, x) = MAKE_RGB(pal5bit(r), pal5bit(g), pal5bit(b));
}
}