Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Added Voodoo Banshee emulation.

Browse source 
Known issues :
- Tiled framebuffer layout is not yet implemented. This causes horizontal
  offsets in some 2D 16bpp stuff (eg FMV in Tomb Raider 2, UI in Expendable)
- Fog is broken and currently disabled for Banshee
- Possibly at least 1 race in 2D blitter emulation
- A few things not yet emulated - overlay filters, some (rarely used) 2D
  blitter functions
This commit is contained in:
SarahW 2020-08-11 11:18:03 +01:00
commit 19a5dfa579
18 changed files with 3857 additions and 120 deletions
Download patch file Download diff file Expand all files Collapse all files

55
src/vid_voodoo_texture.c
View file

@ -157,7 +157,7 @@ void voodoo_use_texture(voodoo_t *voodoo, voodoo_params_t *params, int tmu)
return;
}
}
/*Texture not found, search for unused texture*/
do
{
@ -469,7 +469,7 @@ void voodoo_use_texture(voodoo_t *voodoo, voodoo_params_t *params, int tmu)
voodoo->texture_cache[tmu][c].refcount++;
}
static void flush_texture_cache(voodoo_t *voodoo, uint32_t dirty_addr, int tmu)
void flush_texture_cache(voodoo_t *voodoo, uint32_t dirty_addr, int tmu)
{
int wait_for_idle = 0;
int c;
@ -531,30 +531,41 @@ void voodoo_tex_writel(uint32_t addr, uint32_t val, void *p)
if (tmu && !voodoo->dual_tmus)
return;
// pclog("voodoo_tex_writel : %08X %08X %i\n", addr, val, voodoo->params.tformat);
lod = (addr >> 17) & 0xf;
t = (addr >> 9) & 0xff;
if (voodoo->params.tformat[tmu] & 8)
s = (addr >> 1) & 0xfe;
else
if (voodoo->type != VOODOO_BANSHEE)
{
if (voodoo->params.textureMode[tmu] & (1 << 31))
s = addr & 0xfc;
if (!(voodoo->params.tformat[tmu] & 8) && voodoo->type == VOODOO_BANSHEE)
{
lod = (addr >> 16) & 0xf;
t = (addr >> 8) & 0xff;
}
else
s = (addr >> 1) & 0xfc;
{
lod = (addr >> 17) & 0xf;
t = (addr >> 9) & 0xff;
}
if (voodoo->params.tformat[tmu] & 8)
s = (addr >> 1) & 0xfe;
else
{
if ((voodoo->params.textureMode[tmu] & (1 << 31)) || voodoo->type == VOODOO_BANSHEE)
s = addr & 0xfc;
else
s = (addr >> 1) & 0xfc;
}
if (lod > LOD_MAX)
return;
// if (addr >= 0x200000)
// return;
if (voodoo->params.tformat[tmu] & 8)
addr = voodoo->params.tex_base[tmu][lod] + s*2 + (t << voodoo->params.tex_shift[tmu][lod])*2;
else
addr = voodoo->params.tex_base[tmu][lod] + s + (t << voodoo->params.tex_shift[tmu][lod]);
}
if (lod > LOD_MAX)
return;
// if (addr >= 0x200000)
// return;
if (voodoo->params.tformat[tmu] & 8)
addr = voodoo->params.tex_base[tmu][lod] + s*2 + (t << voodoo->params.tex_shift[tmu][lod])*2;
else
addr = voodoo->params.tex_base[tmu][lod] + s + (t << voodoo->params.tex_shift[tmu][lod]);
addr = (addr & 0x1ffffc) + voodoo->params.tex_base[tmu][lod];
if (voodoo->texture_present[tmu][(addr & voodoo->texture_mask) >> TEX_DIRTY_SHIFT])
{
// pclog("texture_present at %08x %i\n", addr, (addr & voodoo->texture_mask) >> TEX_DIRTY_SHIFT);