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#include "snes9x.h"
#include "ppu.h"
#include "rops.h"
ROPSTRUCT rops[MAX_ROPS];
unsigned int ROpCount;
void doRaster(ROPSTRUCT* rop)
{
if (!rop)
return;
switch (rop->rop)
{
case ROP_NOP:
// NOP
break;
case ROP_FIXEDCOLOUR:
{
unsigned char col = rop->value & 0x1f;
// Colour data for fixed colour addition/subtraction
if (rop->value & 0x80) PPU.FixedColourBlue = col;
if (rop->value & 0x40) PPU.FixedColourGreen = col;
if (rop->value & 0x20) PPU.FixedColourRed = col;
}
break;
case ROP_PALETTE:
{
// Pallette, colors
unsigned char col = rop->value & 255;
IPPU.Blue[col] = (rop->value >> (16 + 10)) & 0x1f;
IPPU.Green[col] = (rop->value >> (16 + 5)) & 0x1f;
IPPU.Red[col] = (rop->value >> (16 + 0)) & 0x1f;
IPPU.ScreenColors[col] = (uint16) BUILD_PIXEL(IPPU.XB[IPPU.Red[col]], IPPU.XB[IPPU.Green[col]],
IPPU.XB[IPPU.Blue[col]]);
IPPU.ColorsChanged = TRUE;
}
break;
case ROP_SCREEN_MODE:
// Screen mode (0 - 7), background tile sizes and background 3 priority
PPU.BG[0].BGSize = (rop->value >> 4) & 1;
PPU.BG[1].BGSize = (rop->value >> 5) & 1;
PPU.BG[2].BGSize = (rop->value >> 6) & 1;
PPU.BG[3].BGSize = (rop->value >> 7) & 1;
PPU.BGMode = rop->value & 7;
// BJ: BG3Priority only takes effect if BGMode==1 and the bit is set
PPU.BG3Priority = ((rop->value & 0x0f) == 0x09);
break;
case ROP_BRIGHTNESS:
PPU.Brightness = rop->value;
S9xFixColourBrightness();
if (PPU.Brightness > IPPU.MaxBrightness) IPPU.MaxBrightness = PPU.Brightness;
IPPU.ColorsChanged = TRUE;
IPPU.DirectColourMapsNeedRebuild = TRUE;
break;
case ROP_FORCE_BLANKING:
PPU.ForcedBlanking = rop->value;
IPPU.ColorsChanged = TRUE;
break;
case ROP_TILE_ADDRESS:
PPU.OBJNameBase = (rop->value & 3) << 14;
PPU.OBJNameSelect = ((rop->value >> 3) & 3) << 13;
PPU.OBJSizeSelect = (rop->value >> 5) & 7;
IPPU.OBJChanged = TRUE;
break;
case ROP_MOSAIC:
PPU.Mosaic = (rop->value >> 4) + 1;
PPU.BGMosaic[0] = (rop->value & 1) && PPU.Mosaic > 1;
PPU.BGMosaic[1] = (rop->value & 2) && PPU.Mosaic > 1;
PPU.BGMosaic[2] = (rop->value & 4) && PPU.Mosaic > 1;
PPU.BGMosaic[3] = (rop->value & 8) && PPU.Mosaic > 1;
break;
case ROP_BG_SCSIZE_SCBASE:
PPU.BG[rop->value >> 16].SCSize = rop->value & 3;
PPU.BG[rop->value >> 16].SCBase = (rop->value & 0x7c) << 8;
break;
case ROP_BG_NAMEBASE:
PPU.BG[(rop->value >> 16) + 0].NameBase = (rop->value & 7) << 12;
PPU.BG[(rop->value >> 16) + 1].NameBase = ((rop->value >> 4) & 7) << 12;
break;
case ROP_MODE7_ROTATION:
PPU.Mode7Repeat = rop->value >> 6;
if (PPU.Mode7Repeat == 1) PPU.Mode7Repeat = 0;
PPU.Mode7VFlip = (rop->value & 2) >> 1;
PPU.Mode7HFlip = rop->value & 1;
break;
case ROP_BG_WINDOW_ENABLE:
PPU.ClipWindow1Enable[(rop->value >> 16) + 0] = !!(rop->value & 0x02);
PPU.ClipWindow1Enable[(rop->value >> 16) + 1] = !!(rop->value & 0x20);
PPU.ClipWindow2Enable[(rop->value >> 16) + 0] = !!(rop->value & 0x08);
PPU.ClipWindow2Enable[(rop->value >> 16) + 1] = !!(rop->value & 0x80);
PPU.ClipWindow1Inside[(rop->value >> 16) + 0] = !(rop->value & 0x01);
PPU.ClipWindow1Inside[(rop->value >> 16) + 1] = !(rop->value & 0x10);
PPU.ClipWindow2Inside[(rop->value >> 16) + 0] = !(rop->value & 0x04);
PPU.ClipWindow2Inside[(rop->value >> 16) + 1] = !(rop->value & 0x40);
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_WINDOW1_LEFT:
PPU.Window1Left = rop->value;
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_WINDOW1_RIGHT:
PPU.Window1Right = rop->value;
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_WINDOW2_LEFT:
PPU.Window2Left = rop->value;
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_WINDOW2_RIGHT:
PPU.Window2Right = rop->value;
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_BG_WINDOW_LOGIC:
PPU.ClipWindowOverlapLogic[0] = (rop->value & 0x03);
PPU.ClipWindowOverlapLogic[1] = (rop->value & 0x0c) >> 2;
PPU.ClipWindowOverlapLogic[2] = (rop->value & 0x30) >> 4;
PPU.ClipWindowOverlapLogic[3] = (rop->value & 0xc0) >> 6;
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_OBJS_WINDOW_LOGIC:
PPU.ClipWindowOverlapLogic[4] = (rop->value & 0x03);
PPU.ClipWindowOverlapLogic[5] = (rop->value & 0x0c) >> 2;
PPU.RecomputeClipWindows = TRUE;
break;
case ROP_MAIN_SCREEN_DESIG:
// Main screen designation (backgrounds 1 - 4 and objects)
if ((GFX.r212c_s & GFX.r212e_s & 0x1f) != (GFX.r212e_s & rop->value & 0x1f)) PPU.RecomputeClipWindows = TRUE;
GFX.r212c_s = rop->value;
break;
case ROP_SUB_SCREEN_DESIG:
// Sub-screen designation (backgrounds 1 - 4 and objects)
if ((GFX.r212d_s & GFX.r212f_s & 0x1f) != (GFX.r212f_s & rop->value & 0x1f)) PPU.RecomputeClipWindows = TRUE;
GFX.r212d_s = rop->value;
break;
case ROP_MAIN_SCREEN_WMASK:
// Window mask designation for main screen ?
if ((GFX.r212c_s & GFX.r212e_s & 0x1f) != (GFX.r212c_s & rop->value & 0x1f)) PPU.RecomputeClipWindows = TRUE;
GFX.r212e_s = rop->value;
break;
case ROP_SUB_SCREEN_WMASK:
// Window mask designation for sub-sreen ?
if ((GFX.r212d_s & GFX.r212f_s & 0x1f) != (GFX.r212d_s & rop->value & 0x1f)) PPU.RecomputeClipWindows = TRUE;
GFX.r212f_s = rop->value;
break;
case ROP_FIXEDCOL_OR_SCREEN:
// Fixed colour addition or screen addition
if ((GFX.r2130_s & 0xf0) != (rop->value & 0xf0)) PPU.RecomputeClipWindows = TRUE;
GFX.r2130_s = rop->value;
break;
case ROP_ADD_OR_SUB_COLOR:
// Backgrounds 1 - 4, objects and backdrop colour add/sub enable
GFX.r2131_s = rop->value;
break;
}
rop->rop = 0; // Raster Operation already done, invalidate it
}
bool wouldRasterAlterStatus(ROPSTRUCT* rop)
{
if (!rop)
return false;
switch (rop->rop)
{
case ROP_NOP:
return false;
case ROP_FIXEDCOLOUR:
{
unsigned char col = rop->value & 0x1f;
// Colour data for fixed colour addition/subtraction
if ((rop->value & 0x80) && (PPU.FixedColourBlue != col)) return true;
if ((rop->value & 0x40) && (PPU.FixedColourGreen != col)) return true;
if ((rop->value & 0x20) && (PPU.FixedColourRed != col)) return true;
return false;
}
break;
case ROP_PALETTE:
return true;
case ROP_SCREEN_MODE:
return true;
case ROP_BRIGHTNESS:
return true;
case ROP_FORCE_BLANKING:
return true;
case ROP_TILE_ADDRESS:
return true;
case ROP_MOSAIC:
return true;
case ROP_BG_SCSIZE_SCBASE:
return true;
case ROP_BG_NAMEBASE:
return true;
case ROP_MODE7_ROTATION:
return true;
case ROP_BG_WINDOW_ENABLE:
return true;
case ROP_WINDOW1_LEFT:
return true;
case ROP_WINDOW1_RIGHT:
return true;
case ROP_WINDOW2_LEFT:
return true;
case ROP_WINDOW2_RIGHT:
return true;
case ROP_BG_WINDOW_LOGIC:
return true;
case ROP_OBJS_WINDOW_LOGIC:
return true;
case ROP_MAIN_SCREEN_DESIG:
return true;
case ROP_SUB_SCREEN_DESIG:
return true;
case ROP_MAIN_SCREEN_WMASK:
return true;
case ROP_SUB_SCREEN_WMASK:
return true;
case ROP_FIXEDCOL_OR_SCREEN:
return true;
case ROP_ADD_OR_SUB_COLOR:
return true;
}
return true;
}
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