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chqflag.cpp: "black" colored rain definitely don't show up when it starts/ends pouring, fix tables accordingly (nw)

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angelosa 2017-11-23 17:14:29 +01:00
parent 23b127fc64
commit d0895e1f12
1 changed files with 9 additions and 4 deletions
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13
src/mame/drivers/chqflag.cpp
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@ -79,10 +79,15 @@ WRITE8_MEMBER(chqflag_state::chqflag_vreg_w)
* 0x08 is used at dawn after 0x88 state
* The shadow part looks ugly when rain starts/ends pouring (-> black colored with a setting of 0x00),
* the reference shows dimmed background when this event occurs (which is handled via reg 1 bit 0 of k051960 device),
* might be actually disabling the shadow here (-> setting 1.0f instead), but can't say for sure from the available reference.
* might be actually disabling the shadow here (-> setting 1.0f instead).
*
* TODO: true values aren't known, also shadow_factors table probably scales towards zero instead (game doesn't use those)
*/
const float shadow_factors[4] = {PALETTE_DEFAULT_SHADOW_FACTOR, 1.33f, 1.66f, 2.0f };
m_palette->set_shadow_factor(shadow_factors[((data & 0x80) >> 6) | ((data & 0x08) >> 3)]);
const float shadow_factors[4] = {0.8, 1.33, 1.66, 2.0 };
const float highlight_factors[4] = {1.0, 1.33, 1.66, 2.0 };
uint8_t shadow_value = ((data & 0x80) >> 6) | ((data & 0x08) >> 3);
m_palette->set_shadow_factor(m_last_vreg != 0 ? highlight_factors[shadow_value] : shadow_factors[shadow_value] );
#if 0
if ((data & 0x80) != m_last_vreg)
@ -297,7 +302,7 @@ void chqflag_state::machine_reset()
inline void chqflag_state::update_background_shadows(uint8_t data)
{
double brt = (data & 1) ? PALETTE_DEFAULT_SHADOW_FACTOR : 1.0;
double brt = (data & 1) ? 0.8 : 1.0;
for (int i = 512; i < 1024; i++)
m_palette->set_pen_contrast(i, brt);