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PSX: implemented GPU STP draw and checking, which is used on Aquarush for water effects. [smf]

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This commit is contained in:
smf- 2018-09-20 14:14:37 +01:00
parent 7396134c94
commit 3035c29985
2 changed files with 21 additions and 13 deletions
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32
src/devices/video/psx.cpp
View File

@ -566,10 +566,8 @@ void psxgpu_device::psx_gpu_init( int n_gputype )
}
}
// icky!!!
machine().save().save_memory( this, "globals", nullptr, 0, "m_packet", (uint8_t *)&m_packet, 1, sizeof( m_packet ) );
save_pointer(NAME(p_vram), width * height );
save_item(NAME(m_packet.n_entry));
save_item(NAME(n_gpu_buffer_offset));
save_item(NAME(n_vramx));
save_item(NAME(n_vramy));
@ -600,6 +598,8 @@ void psxgpu_device::psx_gpu_init( int n_gputype )
save_item(NAME(n_ix));
save_item(NAME(n_iy));
save_item(NAME(n_ti));
save_item(NAME(m_draw_stp));
save_item(NAME(m_check_stp));
}
void psxgpu_device::device_post_load()
@ -763,7 +763,16 @@ uint32_t psxgpu_device::update_screen(screen_device &screen, bitmap_rgb32 &bitma
return 0;
}
#define WRITE_PIXEL( p ) *( p_vram ) = p;
#define WRITE_PIXEL( p ) \
{ \
if( !m_check_stp || ( *( p_vram ) & 0x8000 ) == 0 ) \
{ \
if( m_draw_stp ) \
*( p_vram ) = ( p ) | 0x8000; \
else \
*( p_vram ) = p; \
} \
}
/*
type 1
@ -781,7 +790,7 @@ void psxgpu_device::decode_tpage( uint32_t tpage )
{
if( m_n_gputype == 2 )
{
n_gpustatus = ( n_gpustatus & 0xfffff800 ) | ( tpage & 0x7ff );
n_gpustatus = ( n_gpustatus & 0xffff7800 ) | ( tpage & 0x7ff ) | ( ( tpage & 0x800 ) << 4 );
m_n_tx = ( tpage & 0x0f ) << 6;
m_n_ty = ( ( tpage & 0x10 ) << 4 ) | ( ( tpage & 0x800 ) >> 2 );
@ -801,6 +810,7 @@ void psxgpu_device::decode_tpage( uint32_t tpage )
}
else
{
// TODO: confirm status bits on real type 1 gpu
n_gpustatus = ( n_gpustatus & 0xffffe000 ) | ( tpage & 0x1fff );
m_n_tx = ( tpage & 0x0f ) << 6;
@ -3185,16 +3195,12 @@ void psxgpu_device::gpu_write( uint32_t *p_ram, int32_t n_size )
n_drawoffset_x, n_drawoffset_y );
break;
case 0xe6:
m_draw_stp = BIT( data, 0 );
m_check_stp = BIT( data, 1 );
// TODO: confirm status bits on real type 1 gpu
n_gpustatus &= ~( 3L << 0xb );
n_gpustatus |= ( data & 0x03 ) << 0xb;
if( ( m_packet.n_entry[ 0 ] & 3 ) != 0 )
{
verboselog( *this, 1, "not handled: mask setting %d\n", m_packet.n_entry[ 0 ] & 3 );
}
else
{
verboselog( *this, 1, "mask setting %d\n", m_packet.n_entry[ 0 ] & 3 );
}
verboselog( *this, 1, "mask setting %d\n", m_packet.n_entry[ 0 ] & 3 );
break;
default:
#if defined( MAME_DEBUG )

2
src/devices/video/psx.h
View File

@ -277,6 +277,8 @@ private:
uint32_t n_lightgun_y;
uint32_t n_screenwidth;
uint32_t n_screenheight;
bool m_draw_stp;
bool m_check_stp;
PACKET m_packet;