diff options
Diffstat (limited to 'src/mame/video/namcos22.cpp')
-rw-r--r-- | src/mame/video/namcos22.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/mame/video/namcos22.cpp b/src/mame/video/namcos22.cpp index f5765af21d6..e12254a611d 100644 --- a/src/mame/video/namcos22.cpp +++ b/src/mame/video/namcos22.cpp @@ -9,7 +9,7 @@ * - texture u/v mapping is often 1 pixel off, resulting in many glitch lines/gaps between textures. The glitch may be in MAME core: * it used to be much worse with the legacy_poly_manager * - tokyowar tanks are not shootable, same for timecris helicopter, there's still a very small hitbox but almost impossible to hit. - * airco22b may have a similar problem. (is this related to dsp? or cpu?) + * is this related to dsp? or cpu? * - find out how/where vics num_sprites is determined exactly, currently a workaround is needed for airco22b and dirtdash * - improve ss22 fogging: * + scene changes too rapidly sometimes, eg. dirtdash snow level finish (see attract), or aquajet going down the waterfall @@ -1880,7 +1880,7 @@ void namcos22_state::namcos22s_mix_text_layer(screen_device &screen, bitmap_rgb3 // prepare alpha uint8_t alpha_check12 = nthbyte(m_mixer, 0x12); uint8_t alpha_check13 = nthbyte(m_mixer, 0x13); - uint8_t alpha_mask = nthbyte(m_mixer, 0x14); + uint8_t alpha_mask = nthbyte(m_mixer, 0x14) & 0xf; uint8_t alpha_factor = nthbyte(m_mixer, 0x15); // prepare spot @@ -1910,7 +1910,7 @@ void namcos22_state::namcos22s_mix_text_layer(screen_device &screen, bitmap_rgb3 if (alpha_factor) { uint8_t pen = src[x] & 0xff; - if ((pen & 0xf) == alpha_mask || pen == alpha_check12 || pen == alpha_check13) + if ((pen & 0xf) == alpha_mask || (pen >= alpha_check12 && pen <= alpha_check13)) { rgb.blend(rgbaint_t(dest[x]), 0xff - alpha_factor); } |