Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-07-01 16:19:38 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

namcos22: possible overflow on texture bank (shouldnt happen)

Browse Source
This commit is contained in:
hap 2022-11-26 15:51:45 +01:00
parent 646bcfc81e
commit 694c21c47f
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/mame/namco/namcos22_v.cpp
View File

@ -81,9 +81,9 @@ void namcos22_renderer::renderscanline_poly(int32_t scanline, const extent_t &ex
// texture mapping // texture mapping
if (texture_enabled) if (texture_enabled)
{ {
int tx = u * ooz; int tx = int(u * ooz) & 0xfff;
int ty = v * ooz + bn; int ty = (int(v * ooz) & 0xfff) | bn;
int to = ((ty & 0xfff0) << 4) | ((tx & 0xff0) >> 4); int to = (ty << 4 & 0xfff00) | (tx >> 4);
pen = ttdata[(ttmap[to] << 8) | tt_ayx_to_pixel[ttattr[to] << 8 | (ty << 4 & 0xf0) | (tx & 0xf)]]; pen = ttdata[(ttmap[to] << 8) | tt_ayx_to_pixel[ttattr[to] << 8 | (ty << 4 & 0xf0) | (tx & 0xf)]];
rgb.set(pens[pen >> penshift & penmask]); rgb.set(pens[pen >> penshift & penmask]);
} }
@ -174,9 +174,9 @@ void namcos22_renderer::renderscanline_poly_ss22(int32_t scanline, const extent_
// texture mapping // texture mapping
if (texture_enabled) if (texture_enabled)
{ {
int tx = u * ooz; int tx = int(u * ooz) & 0xfff;
int ty = v * ooz + bn; int ty = (int(v * ooz) & 0xfff) | bn;
int to = ((ty & 0xfff0) << 4) | ((tx & 0xff0) >> 4); int to = (ty << 4 & 0xfff00) | (tx >> 4);
pen = ttdata[(ttmap[to] << 8) | tt_ayx_to_pixel[ttattr[to] << 8 | (ty << 4 & 0xf0) | (tx & 0xf)]]; pen = ttdata[(ttmap[to] << 8) | tt_ayx_to_pixel[ttattr[to] << 8 | (ty << 4 & 0xf0) | (tx & 0xf)]];
rgb.set(pens[pen >> penshift & penmask]); rgb.set(pens[pen >> penshift & penmask]);
} }