#include "pvr_regs.h"
#include "pvr_mem.h"
#include "Renderer_if.h"
#include "ta.h"
#include "spg.h"

u32 palette_ram[1024];
bool pal_needs_update=true;
bool fog_needs_update=true;
u32 _pal_rev_256[4]={0};
u32 _pal_rev_16[64]={0};
u32 pal_rev_256[4]={0};
u32 pal_rev_16[64]={0};

u8 pvr_regs[pvr_RegSize];

u32 pvr_ReadReg(u32 addr)
{
	return PvrReg(addr,u32);
}

void pvr_WriteReg(u32 paddr,u32 data)
{
	u32 addr=paddr&pvr_RegMask;

	if (addr==ID_addr)
		return;//read only
	if (addr==REVISION_addr)
		return;//read only
	if (addr==TA_YUV_TEX_CNT_addr)
		return;//read only

	if (addr==STARTRENDER_addr)
	{
		//start render
		rend_start_render();
		return;
	}

	if (addr==TA_LIST_INIT_addr)
	{
		if (data>>31)
		{
			ta_vtx_ListInit();
			data=0;
		}
	}

	if (addr==SOFTRESET_addr)
	{
		if (data!=0)
		{
			if (data&1)
				ta_vtx_SoftReset();
			data=0;
		}
	}

	if (addr==TA_LIST_CONT_addr)
	{
		//a write of anything works ?
		ta_vtx_ListCont();
	}
	
	if (addr == FB_R_CTRL_addr || 
		addr == SPG_CONTROL_addr || 
		addr == SPG_LOAD_addr)
	{
		PvrReg(addr,u32)=data;
		CalculateSync();
		return;
	}

	if (addr == TA_YUV_TEX_BASE_addr)
		YUV_init();

	if (addr>=PALETTE_RAM_START_addr)
	{
		if (PvrReg(addr,u32)!=data)
		{
			u32 pal=(addr/4)&1023;

			pal_needs_update=true;
			_pal_rev_256[pal>>8]++;
			_pal_rev_16[pal>>4]++;
		}
	}

	if (addr>=FOG_TABLE_START_addr && addr<=FOG_TABLE_END_addr && PvrReg(addr,u32)!=data)
	{
		fog_needs_update=true;
	}
	PvrReg(addr,u32)=data;
}

void Regs_Reset(bool Manual)
{
	ID                  = 0x17FD11DB;
	REVISION            = 0x00000011;
	SOFTRESET           = 0x00000007;
	SPG_HBLANK_INT.full = 0x031D0000;
	SPG_VBLANK_INT.full = 0x01500104;
	FPU_PARAM_CFG       = 0x0007DF77;
	HALF_OFFSET         = 0x00000007;
	ISP_FEED_CFG        = 0x00402000;
	SDRAM_REFRESH       = 0x00000020;
	SDRAM_ARB_CFG       = 0x0000001F;
	SDRAM_CFG           = 0x15F28997;
	SPG_HBLANK.full     = 0x007E0345;
	SPG_LOAD.full       = 0x01060359;
	SPG_VBLANK.full     = 0x01500104;
	SPG_WIDTH.full      = 0x07F1933F;
	VO_CONTROL.full     = 0x00000108;
	VO_STARTX.full      = 0x0000009D;
	VO_STARTY.full      = 0x00000015;
	SCALER_CTL.full     = 0x00000400;
	FB_BURSTCTRL        = 0x00090639;
	PT_ALPHA_REF        = 0x000000FF;
}