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Added usable 3DFX emulation.

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This commit is contained in:
TomW 2015-03-08 15:55:03 +00:00
commit 708cf896d1
10 changed files with 2863 additions and 309 deletions
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33
src/vid_svga.c
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@ -17,6 +17,20 @@ extern uint8_t edatlookup[4][4];
uint8_t svga_rotate[8][256];
/*Primary SVGA device. As multiple video cards are not yet supported this is the
only SVGA device.*/
static svga_t *svga_pri;
svga_t *svga_get_pri()
{
return svga_pri;
}
void svga_set_override(svga_t *svga, int val)
{
if (svga->override && !val)
svga->fullchange = changeframecount;
svga->override = val;
}
void svga_out(uint16_t addr, uint8_t val, void *p)
{
@ -441,12 +455,14 @@ void svga_poll(void *p)
if (svga->hwcursor_on || svga->overlay_on)
svga->changedvram[svga->ma >> 12] = svga->changedvram[(svga->ma >> 12) + 1] = 2;
svga->render(svga);
if (!svga->override)
svga->render(svga);
if (svga->overlay_on)
{
svga->overlay_draw(svga, svga->displine);
if (!svga->override)
svga->overlay_draw(svga, svga->displine);
svga->overlay_on--;
if (svga->overlay_on && svga->interlace)
svga->overlay_on--;
@ -454,7 +470,8 @@ void svga_poll(void *p)
if (svga->hwcursor_on)
{
svga->hwcursor_draw(svga, svga->displine);
if (!svga->override)
svga->hwcursor_draw(svga, svga->displine);
svga->hwcursor_on--;
if (svga->hwcursor_on && svga->interlace)
svga->hwcursor_on--;
@ -561,7 +578,8 @@ void svga_poll(void *p)
wx = x;
wy = svga->lastline - svga->firstline;
svga_doblit(svga->firstline_draw, svga->lastline_draw + 1, wx, wy, svga);
if (!svga->override)
svga_doblit(svga->firstline_draw, svga->lastline_draw + 1, wx, wy, svga);
readflash = 0;
@ -685,6 +703,9 @@ int svga_init(svga_t *svga, void *p, int memsize,
timer_add(svga_poll, &svga->vidtime, TIMER_ALWAYS_ENABLED, svga);
vramp = svga->vram;
svga_pri = svga;
return 0;
}
@ -692,6 +713,8 @@ void svga_close(svga_t *svga)
{
free(svga->changedvram);
free(svga->vram);
svga_pri = NULL;
}
#define egacycles 1