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BG color (nw)

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This commit is contained in:
Olivier Galibert 2020-02-24 22:59:11 +01:00
parent 2a5b1517de
commit 31bde573ab
1 changed files with 79 additions and 101 deletions
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82
src/mame/drivers/xavix2.cpp
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@ -58,10 +58,13 @@ private:
u32 m_int_enabled;
u32 m_int_nmi;
u16 m_bg_color;
u32 m_sd[0x400][0x800];
std::string m_debug_string;
static u32 rgb555_888(u16 color);
void irq_raise(u32 level);
void irq_clear(u32 level);
bool irq_state(u32 level) const;
@ -72,6 +75,8 @@ private:
void irq_enable_w(u16 data);
u8 irq_level_r();
void bg_color_w(u16 data);
void gpu0_adr_w(u16 data);
u16 gpu0b_adr_r();
void gpu0b_adr_w(u16 data);
@ -125,6 +130,22 @@ private:
void mem(address_map &map);
};
u32 xavix2_state::rgb555_888(u16 color)
{
u8 r = (color >> 10) & 31;
u8 g = (color >> 5) & 31;
u8 b = (color >> 0) & 31;
r = (r << 3) | (r >> 2);
g = (g << 3) | (g >> 2);
b = (b << 3) | (b >> 2);
return (r << 16) | (b << 8) | g;
}
void xavix2_state::bg_color_w(u16 data)
{
m_bg_color = data;
}
void xavix2_state::irq_raise(u32 level)
{
u32 line = 1 << level;
@ -306,55 +327,6 @@ void xavix2_state::gpu_update(u16 count, u16 adr)
avail -= bpp;
}
}
/*
switch(bpp) {
case 2: {
stride = 8*((sx+31)/32);
for(u32 yy=0; yy<sy; yy++) {
u32 cadr = sadr;
for(u32 xx=0; xx<sx; xx += 32) {
u64 v = m_maincpu->space(AS_PROGRAM).read_qword(cadr);
u32 xxl = sx - xx;
if(xxl > 32)
xxl = 32;
for(u32 xxx=0; xxx<xxl; xxx++) {
u32 c = (v >> (2*xxx)) & 3;
m_sd[y+yy][x+xx+xxx] = 0xff000000 | (0x555555 * c);
}
cadr += 8;
}
sadr += stride;
}
break;
}
case 3: {
stride = 8*((sx+20)/21);
for(u32 yy=0; yy<sy; yy++) {
u32 cadr = sadr;
for(u32 xx=0; xx<sx; xx += 21) {
u64 v = m_maincpu->space(AS_PROGRAM).read_qword(cadr);
u32 xxl = sx - xx;
if(xxl > 21)
xxl = 21;
for(u32 xxx=0; xxx<xxl; xxx++) {
u32 c = (v >> (3*xxx)) & 7;
m_sd[y+yy][x+xx+xxx] = 0xff000000 | (0x242424 * c);
}
cadr += 8;
}
sadr += stride;
}
break;
}
default:
for(u32 yy=0; yy<sy; yy++)
for(u32 xx=0; xx<sx; xx++)
m_sd[yy+y][xx+x] = 0xffff0000;
break;
}
*/
}
}
@ -419,7 +391,10 @@ TIMER_CALLBACK_MEMBER(xavix2_state::dma_end)
INTERRUPT_GEN_MEMBER(xavix2_state::vblank_irq)
{
memset(m_sd, 0, sizeof(m_sd));
u32 color = rgb555_888(m_bg_color);
for(u32 y=0; y != 0x400; y++)
for(u32 x=0; x != 0x800; x++)
m_sd[y][x] = color;
irq_raise(IRQ_TIMER);
}
@ -448,7 +423,7 @@ u8 xavix2_state::debug_port_status_r()
void xavix2_state::port0_ddr_w(u16 data)
{
// logerror("%s: port0 ddr %04x -> %04x\n", machine().describe_context(), m_port0_ddr, data);
// logerror("%s: port0 ddr %04x -> %04x\n", machine().describe_context(), m_port0_ddr, data);
m_port0_ddr = data;
m_port0_maskr = m_port0_maskw = 0;
for (u32 i=0; i<8; i++) {
@ -456,7 +431,7 @@ void xavix2_state::port0_ddr_w(u16 data)
m_port0_maskw |= ((data & 3) == 3) ? 1 << i : 0;
data >>= 2;
}
// logerror("%s: port0 maskr %04x, maskw %04x\n", machine().describe_context(), m_port0_maskr, m_port0_maskw);
// logerror("%s: port0 maskr %04x, maskw %04x\n", machine().describe_context(), m_port0_maskr, m_port0_maskw);
port0_update();
}
@ -563,6 +538,8 @@ void xavix2_state::mem(address_map &map)
map(0xffffe606, 0xffffe607).rw(FUNC(xavix2_state::gpu1b_count_r), FUNC(xavix2_state::gpu1b_count_w));
map(0xffffe608, 0xffffe609).w(FUNC(xavix2_state::gpu_descsize_w));
map(0xffffe60a, 0xffffe60b).lr16(NAME([]() { return 0x240; })); // pal/ntsc
map(0xffffe60e, 0xffffe60f).w(FUNC(xavix2_state::bg_color_w));
map(0xffffe622, 0xffffe623).w(FUNC(xavix2_state::gpu_descdata_w));
map(0xffffe630, 0xffffe631).lr16(NAME([]() { return 0x210; }));
map(0xffffe632, 0xffffe633).lr16(NAME([]() { return 0x210; }));
@ -602,6 +579,7 @@ void xavix2_state::machine_reset()
m_dma_dst = 0;
m_dma_count = 0;
m_int_active = 0;
m_bg_color = 0;
}
static INPUT_PORTS_START( xavix2 )