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hng64.cpp - reenable using the lighting information in the final mix, plus attempt to match refresh frequency (#11015)

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David Haywood 2023-03-22 13:20:11 +00:00 committed by GitHub
parent 1c623825b2
commit 38aef3891a
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1 changed files with 18 additions and 3 deletions
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21
src/mame/snk/hng64_v.cpp
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@ -900,6 +900,10 @@ uint32_t hng64_state::screen_update_hng64(screen_device &screen, bitmap_rgb32 &b
}
}
// NOTE: buriki 'how to play' might be a sprite vs 3D edge case
// while the 3D is currently positioned badly due to unhandled 3D packet registers, it should still go behind the shutters, not in front
// it could also be a unique mixing case
// tilemaps with 'priority' 0x10 - 0x1f are always behind the 3d?
for (int y = cliprect.min_y; y <= cliprect.max_y; y++)
{
@ -968,13 +972,16 @@ uint32_t hng64_state::screen_update_hng64(screen_device &screen, bitmap_rgb32 &b
uint16_t srcpix = src[((cliprect.min_x + x) + xscroll) & 0x1ff];
if (srcpix & 0x07ff)
{
// format in our framebuffer is llll appp pppp pppp
// where l = lighting, a = alpha, p = palindex
// our m_palette_3d has 16 copies of the palette at different brightness levels, so we can pass directly
if (srcpix & 0x0800)
{
*dst = alpha_blend_r32(*(uint32_t*)dst, clut_3d[(srcpix & 0x7ff) | palbase], 0x80);
*dst = alpha_blend_r32(*(uint32_t*)dst, clut_3d[(srcpix & 0xf7ff) | palbase], 0x80);
}
else
{
*dst = clut_3d[(srcpix & 0x7ff) | palbase];
*dst = clut_3d[(srcpix & 0xf7ff) | palbase];
}
}
@ -1468,7 +1475,15 @@ void hng64_state::tcram_w(offs_t offset, uint32_t data, uint32_t mem_mask)
m_screen_dis = 0;
visarea.set(min_x, min_x + max_x - 1, min_y, min_y + max_y - 1);
m_screen->configure(HTOTAL, VTOTAL, visarea, m_screen->frame_period().attoseconds());
// TODO: properly calculate this from screen params
attoseconds_t period;
if (max_y == 448)
period = HZ_TO_ATTOSECONDS(59.430077); // everything apart from fatfurwa uses a 512x448 resolution, and 59.43hz appears to sync with hardware
else
period = HZ_TO_ATTOSECONDS(61.651673); // fatfurwa uses 512x432, sync frequency not verified
m_screen->configure(HTOTAL, VTOTAL, visarea, period);
}
if ((offset >= (0x28 / 4)) && (offset < (0x48 / 4)))