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kungfum.c: amplified default contrast, this fixes washed out colors [hap]

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This commit is contained in:
Michaël Banaan Ananas 2011-07-26 21:51:26 +00:00
parent dd2f6ae7df
commit 88924904ae
1 changed files with 26 additions and 6 deletions
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32
src/mame/video/m62.c
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@ -180,6 +180,23 @@ static const res_net_decode_info spelunk2_sprite_decode_info =
}; };
static void m62_amplify_contrast(palette_t *palette, UINT32 numcolors)
{
// m62 palette is very dark, so amplify default contrast
UINT32 i, ymax=0;
if (!numcolors) numcolors = palette_get_num_colors(palette);
// find maximum brightness
for (i=0;i < numcolors;i++)
{
rgb_t rgb = palette_entry_get_color(palette,i);
UINT32 y = 299 * RGB_RED(rgb) + 587 * RGB_GREEN(rgb) + 114 * RGB_BLUE(rgb);
ymax = MAX(ymax, y);
}
palette_set_contrast(palette, 255000.0/ymax);
}
PALETTE_INIT( m62 ) PALETTE_INIT( m62 )
{ {
m62_state *state = machine.driver_data<m62_state>(); m62_state *state = machine.driver_data<m62_state>();
@ -193,7 +210,7 @@ PALETTE_INIT( m62 )
palette_set_colors(machine, 0x100, rgb, 0x100); palette_set_colors(machine, 0x100, rgb, 0x100);
auto_free(machine, rgb); auto_free(machine, rgb);
palette_normalize_range(machine.palette, 0x000, 0x1ff, 0x00, 0xff); m62_amplify_contrast(machine.palette,0);
/* we'll need this at run time */ /* we'll need this at run time */
state->m_sprite_height_prom = color_prom + 0x600; state->m_sprite_height_prom = color_prom + 0x600;
@ -213,7 +230,7 @@ PALETTE_INIT( lotlot )
palette_set_colors(machine, 0x180, rgb, 0x180); palette_set_colors(machine, 0x180, rgb, 0x180);
auto_free(machine, rgb); auto_free(machine, rgb);
palette_normalize_range(machine.palette, 0x000, 0x2ff, 0x00, 0xff); m62_amplify_contrast(machine.palette,0);
/* we'll need this at run time */ /* we'll need this at run time */
state->m_sprite_height_prom = color_prom + 0x900; state->m_sprite_height_prom = color_prom + 0x900;
@ -225,6 +242,7 @@ PALETTE_INIT( battroad )
m62_state *state = machine.driver_data<m62_state>(); m62_state *state = machine.driver_data<m62_state>();
rgb_t *rgb; rgb_t *rgb;
// m62 palette
rgb = compute_res_net_all(machine, color_prom, &m62_tile_decode_info, &m62_tile_net_info); rgb = compute_res_net_all(machine, color_prom, &m62_tile_decode_info, &m62_tile_net_info);
palette_set_colors(machine, 0x000, rgb, 0x100); palette_set_colors(machine, 0x000, rgb, 0x100);
auto_free(machine, rgb); auto_free(machine, rgb);
@ -233,13 +251,15 @@ PALETTE_INIT( battroad )
palette_set_colors(machine, 0x100, rgb, 0x100); palette_set_colors(machine, 0x100, rgb, 0x100);
auto_free(machine, rgb); auto_free(machine, rgb);
m62_amplify_contrast(machine.palette,0x200);
// custom palette for foreground
rgb = compute_res_net_all(machine, color_prom, &battroad_char_decode_info, &battroad_char_net_info); rgb = compute_res_net_all(machine, color_prom, &battroad_char_decode_info, &battroad_char_net_info);
palette_set_colors(machine, 0x200, rgb, 0x020); palette_set_colors(machine, 0x200, rgb, 0x020);
auto_free(machine, rgb); auto_free(machine, rgb);
palette_normalize_range(machine.palette, 0x000, 0x21f, 0x00, 0xff); /* we'll need this at run time */
state->m_sprite_height_prom = color_prom + 0x620;
state->m_sprite_height_prom = color_prom + 0x620; /* we'll need this at run time */
} }
@ -256,7 +276,7 @@ PALETTE_INIT( spelunk2 )
palette_set_colors(machine, 0x200, rgb, 0x100); palette_set_colors(machine, 0x200, rgb, 0x100);
auto_free(machine, rgb); auto_free(machine, rgb);
palette_normalize_range(machine.palette, 0x000, 0x2ff, 0x00, 0xff); m62_amplify_contrast(machine.palette,0);
/* we'll need this at run time */ /* we'll need this at run time */
state->m_sprite_height_prom = color_prom + 0x700; state->m_sprite_height_prom = color_prom + 0x700;