diff options
Diffstat (limited to 'src/mame/video/snk.cpp')
-rw-r--r-- | src/mame/video/snk.cpp | 51 |
1 files changed, 25 insertions, 26 deletions
diff --git a/src/mame/video/snk.cpp b/src/mame/video/snk.cpp index b15fe0b0c04..60b51cb4f40 100644 --- a/src/mame/video/snk.cpp +++ b/src/mame/video/snk.cpp @@ -28,35 +28,34 @@ /**************************************************************************************/ -PALETTE_INIT_MEMBER(snk_state,tnk3) +void snk_state::tnk3_palette(palette_device &palette) const { - const uint8_t *color_prom = memregion("proms")->base(); - int i; - int num_colors = 0x400; + uint8_t const *const color_prom = memregion("proms")->base(); + constexpr int num_colors = 0x400; - for( i=0; i<num_colors; i++ ) + for (int i = 0; i < num_colors; i++) { - int bit0=0,bit1,bit2,bit3,r,g,b; - - bit0 = (color_prom[i + 2*num_colors] >> 3) & 0x01; - bit1 = (color_prom[i] >> 1) & 0x01; - bit2 = (color_prom[i] >> 2) & 0x01; - bit3 = (color_prom[i] >> 3) & 0x01; - r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; - - bit0 = (color_prom[i + 2*num_colors] >> 2) & 0x01; - bit1 = (color_prom[i + num_colors] >> 2) & 0x01; - bit2 = (color_prom[i + num_colors] >> 3) & 0x01; - bit3 = (color_prom[i] >> 0) & 0x01; - g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; - - bit0 = (color_prom[i + 2*num_colors] >> 0) & 0x01; - bit1 = (color_prom[i + 2*num_colors] >> 1) & 0x01; - bit2 = (color_prom[i + num_colors] >> 0) & 0x01; - bit3 = (color_prom[i + num_colors] >> 1) & 0x01; - b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; - - palette.set_pen_color(i,rgb_t(r,g,b)); + int bit0, bit1, bit2, bit3; + + bit0 = BIT(color_prom[i + 2*num_colors], 3); + bit1 = BIT(color_prom[i], 1); + bit2 = BIT(color_prom[i], 2); + bit3 = BIT(color_prom[i], 3); + int const r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + bit0 = BIT(color_prom[i + 2*num_colors], 2); + bit1 = BIT(color_prom[i + num_colors], 2); + bit2 = BIT(color_prom[i + num_colors], 3); + bit3 = BIT(color_prom[i], 0); + int const g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + bit0 = BIT(color_prom[i + 2*num_colors], 0); + bit1 = BIT(color_prom[i + 2*num_colors], 1); + bit2 = BIT(color_prom[i + num_colors], 0); + bit3 = BIT(color_prom[i + num_colors], 1); + int const b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; + + palette.set_pen_color(i, rgb_t(r, g, b)); } } |