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Diffstat (limited to 'src/mame/video/pacman.cpp')
-rw-r--r--src/mame/video/pacman.cpp56
1 files changed, 27 insertions, 29 deletions
diff --git a/src/mame/video/pacman.cpp b/src/mame/video/pacman.cpp
index e46ae8cbb75..6325500b408 100644
--- a/src/mame/video/pacman.cpp
+++ b/src/mame/video/pacman.cpp
@@ -63,58 +63,56 @@
***************************************************************************/
-PALETTE_INIT_MEMBER(pacman_state,pacman)
+void pacman_state::pacman_palette(palette_device &palette) const
{
const uint8_t *color_prom = memregion("proms")->base();
- static const int resistances[3] = { 1000, 470, 220 };
- double rweights[3], gweights[3], bweights[2];
- int i;
+ static constexpr int resistances[3] = { 1000, 470, 220 };
- /* compute the color output resistor weights */
+ // compute the color output resistor weights
+ double rweights[3], gweights[3], bweights[2];
compute_resistor_weights(0, 255, -1.0,
3, &resistances[0], rweights, 0, 0,
3, &resistances[0], gweights, 0, 0,
2, &resistances[1], bweights, 0, 0);
- /* create a lookup table for the palette */
- for (i = 0; i < 32; i++)
+ // create a lookup table for the palette
+ for (int i = 0; i < 32; i++)
{
int bit0, bit1, bit2;
- int r, g, b;
- /* red component */
- bit0 = (color_prom[i] >> 0) & 0x01;
- bit1 = (color_prom[i] >> 1) & 0x01;
- bit2 = (color_prom[i] >> 2) & 0x01;
- r = combine_3_weights(rweights, bit0, bit1, bit2);
+ // red component
+ bit0 = BIT(color_prom[i], 0);
+ bit1 = BIT(color_prom[i], 1);
+ bit2 = BIT(color_prom[i], 2);
+ int const r = combine_3_weights(rweights, bit0, bit1, bit2);
- /* green component */
- bit0 = (color_prom[i] >> 3) & 0x01;
- bit1 = (color_prom[i] >> 4) & 0x01;
- bit2 = (color_prom[i] >> 5) & 0x01;
- g = combine_3_weights(gweights, bit0, bit1, bit2);
+ // green component
+ bit0 = BIT(color_prom[i], 3);
+ bit1 = BIT(color_prom[i], 4);
+ bit2 = BIT(color_prom[i], 5);
+ int const g = combine_3_weights(gweights, bit0, bit1, bit2);
- /* blue component */
- bit0 = (color_prom[i] >> 6) & 0x01;
- bit1 = (color_prom[i] >> 7) & 0x01;
- b = combine_2_weights(bweights, bit0, bit1);
+ // blue component
+ bit0 = BIT(color_prom[i], 6);
+ bit1 = BIT(color_prom[i], 7);
+ int const b = combine_2_weights(bweights, bit0, bit1);
palette.set_indirect_color(i, rgb_t(r, g, b));
}
- /* color_prom now points to the beginning of the lookup table */
+ // color_prom now points to the beginning of the lookup table
color_prom += 32;
- /* allocate the colortable */
- for (i = 0; i < 64*4; i++)
+ // allocate the colortable
+ for (int i = 0; i < 64*4; i++)
{
- uint8_t ctabentry = color_prom[i] & 0x0f;
+ uint8_t const ctabentry = color_prom[i] & 0x0f;
- /* first palette bank */
+ // first palette bank
palette.set_pen_indirect(i, ctabentry);
- /* second palette bank */
- palette.set_pen_indirect(i + 64*4, 0x10 + ctabentry);
+ // second palette bank
+ palette.set_pen_indirect(i + 64*4, 0x10 | ctabentry);
}
}