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extraced GPU modes into methods

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Colby 2016-07-31 13:32:42 +10:00
parent f962e68c73
commit 5faa2f2a81
1 changed files with 113 additions and 98 deletions
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211
lib/waterfoul/gpu.rb
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@ -39,111 +39,18 @@ module Waterfoul
# update lcd control # update lcd control
@vblank = false @vblank = false
@modeclock += cycles @modeclock += cycles
@auxillary_modeclock += cycles
if IO::LCDControl.screen_enabled? if IO::LCDControl.screen_enabled?
case @mode case @mode
when H_BLANK_STATE when H_BLANK_STATE
if @modeclock >= H_BLANK_TIME hblank
@modeclock -= H_BLANK_TIME
@mode = OAM_READ_STATE
inc_current_line
compare_lylc
if current_line == 144
@mode = V_BLANK_STATE
@vblank_line = 0
@auxillary_modeclock = @modeclock
Interrupt.request_interrupt(Interrupt::INTERRUPT_VBLANK)
@lcd_stat = @lcd_stat & 0x9
stat = $mmu.read_byte 0xFF41
if stat & 0x10 == 0x10
if (@lcd_stat & 0x1 == 0x0) && (@lcd_stat & 0x8 == 0x0)
Interrupt.request_interrupt(INTERUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x2
end
@lcd_stat = @lcd_stat & 0xE
if @hide_frames > 0
@hide_frames -= 1
else
@vblank = true
end
@window_line = 0
else
@lcd_stat = @lcd_stat & 0x9
stat = $mmu.read_byte(0xFF41)
if stat & 0x20 == 0x20
if @lcd_stat == 0x0
Interrupt.request_interrupt(INTERRUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x4
end
@lcd_stat = @lcd_stat & 0xE
end
update_stat
end
when V_BLANK_STATE when V_BLANK_STATE
@auxillary_modeclock += cycles vblank
if @auxillary_modeclock >= 456
@auxillary_modeclock = 0
@vblank_line += 1
if @vblank_line <= 9
inc_current_line
compare_lylc
end
end
if @modeclock >= 4104 && @auxillary_modeclock >= 4 && current_line == 153
set_current_line 0
end
if @modeclock >= V_BLANK_TIME
@modeclock -= V_BLANK_TIME
@mode = OAM_READ_STATE
update_stat
@lcd_stat = @lcd_stat & 0x7
compare_lylc
@lcd_stat = @lcd_stat & 0xA
stat = $mmu.read_byte 0xFF41
if stat & 0x20 == 0x20
if @lcd_stat == 0
Interrupt.request_interrupt(Interrupt::INTERRUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x4
end
@lcd_stat = @lcd_stat & 0xD
end
when OAM_READ_STATE when OAM_READ_STATE
if @modeclock >= OAM_SCANLINE_TIME oam
@modeclock -= OAM_SCANLINE_TIME
@scanline_transfered = false
@mode = VMRAM_READ_STATE
@lcd_stat = @lcd_stat & 0x8
update_stat
end
when VMRAM_READ_STATE when VMRAM_READ_STATE
if !@scanline_transfered && @modeclock >= (current_line == 0 ? 160 : 48 ) vram
@scanline_transfered = true
scanline
end
if @modeclock >= VRAM_SCANLINE_TIME
@modeclock -= VRAM_SCANLINE_TIME
@mode = H_BLANK_STATE
update_stat
@lcd_stat = @lcd_stat & 0x8
stat = $mmu.read_byte 0xFF41
if stat & 0x4 == 0x4
if @lcd_stat & 0x4 == 0x0
Interrupt.request_interrupt(Interrupt::INTERRUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x1
end
end
end end
else else
if @screen_enable_delay_cycles > 0 if @screen_enable_delay_cycles > 0
@ -173,6 +80,114 @@ module Waterfoul
private private
def vram
if !@scanline_transfered && @modeclock >= (current_line == 0 ? 160 : 48 )
@scanline_transfered = true
scanline
end
if @modeclock >= VRAM_SCANLINE_TIME
@modeclock -= VRAM_SCANLINE_TIME
@mode = H_BLANK_STATE
update_stat
@lcd_stat = @lcd_stat & 0x8
stat = $mmu.read_byte 0xFF41
if stat & 0x4 == 0x4
if @lcd_stat & 0x4 == 0x0
Interrupt.request_interrupt(Interrupt::INTERRUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x1
end
end
end
def oam
if @modeclock >= OAM_SCANLINE_TIME
@modeclock -= OAM_SCANLINE_TIME
@scanline_transfered = false
@mode = VMRAM_READ_STATE
@lcd_stat = @lcd_stat & 0x8
update_stat
end
end
def hblank
if @modeclock >= H_BLANK_TIME
@modeclock -= H_BLANK_TIME
@mode = OAM_READ_STATE
inc_current_line
compare_lylc
if current_line == 144
@mode = V_BLANK_STATE
@vblank_line = 0
@auxillary_modeclock = @modeclock
Interrupt.request_interrupt(Interrupt::INTERRUPT_VBLANK)
@lcd_stat = @lcd_stat & 0x9
stat = $mmu.read_byte 0xFF41
if stat & 0x10 == 0x10
if (@lcd_stat & 0x1 == 0x0) && (@lcd_stat & 0x8 == 0x0)
Interrupt.request_interrupt(INTERUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x2
end
@lcd_stat = @lcd_stat & 0xE
if @hide_frames > 0
@hide_frames -= 1
else
@vblank = true
end
@window_line = 0
else
@lcd_stat = @lcd_stat & 0x9
stat = $mmu.read_byte(0xFF41)
if stat & 0x20 == 0x20
if @lcd_stat == 0x0
Interrupt.request_interrupt(INTERRUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x4
end
@lcd_stat = @lcd_stat & 0xE
end
update_stat
end
end
def vblank
if @auxillary_modeclock >= 456
@auxillary_modeclock = 0
@vblank_line += 1
if @vblank_line <= 9
inc_current_line
compare_lylc
end
end
if @modeclock >= 4104 && @auxillary_modeclock >= 4 && current_line == 153
set_current_line 0
end
if @modeclock >= V_BLANK_TIME
@modeclock -= V_BLANK_TIME
@mode = OAM_READ_STATE
update_stat
@lcd_stat = @lcd_stat & 0x7
compare_lylc
@lcd_stat = @lcd_stat & 0xA
stat = $mmu.read_byte 0xFF41
if stat & 0x20 == 0x20
if @lcd_stat == 0
Interrupt.request_interrupt(Interrupt::INTERRUPT_LCDSTAT)
end
@lcd_stat = @lcd_stat | 0x4
end
@lcd_stat = @lcd_stat & 0xD
end
end
def scanline def scanline
if IO::LCDControl.screen_enabled? if IO::LCDControl.screen_enabled?
render_bg render_bg