Dasko/snes9x
Dasko/snes9x
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
1ea6ef5061
snes9x/gfx.cpp
Nikos Chantziaras 1ea6ef5061
libretro: Fix audio when video rendering is disabled 
In commit 6628042fe3, audio upload was
moved from retro_run() to S9xDeinitUpdate(). This breaks audio when
runahead is enabled in RetroArch.

With second-instance runahead, S9xDeinitUpdate() is not called when
video rendering is disabled and thus the core instance responsible for
audio is not uploading the audio. With single-instance runahead, audio
is uploaded twice because video rendering is always enabled and thus
S9xDeinitUpdate() gets called twice per frame.

Fix this by introducing a callback that gets called at the end of every
screen refresh, regardless of whether or not rendering is active for
this frame. We can then decide in the callback whether or not audio
should be uploaded.
2022-04-12 16:08:54 +03:00

2130 lines
52 KiB
C++
Raw Blame History

/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
#include "snes9x.h"
#include "ppu.h"
#include "tile.h"
#include "controls.h"
#include "crosshairs.h"
#include "cheats.h"
#include "movie.h"
#include "screenshot.h"
#include "font.h"
#include "display.h"
extern struct SCheatData Cheat;
extern struct SLineData LineData[240];
extern struct SLineMatrixData LineMatrixData[240];
void S9xComputeClipWindows (void);
static int font_width = 8, font_height = 9;
void (*S9xCustomDisplayString) (const char *, int, int, bool, int) = NULL;
static void SetupOBJ (void);
static void DrawOBJS (int);
static void DisplayTime (void);
static void DisplayFrameRate (void);
static void DisplayPressedKeys (void);
static void DisplayWatchedAddresses (void);
static void DisplayStringFromBottom (const char *, int, int, bool);
static void DrawBackground (int, uint8, uint8);
static void DrawBackgroundMosaic (int, uint8, uint8);
static void DrawBackgroundOffset (int, uint8, uint8, int);
static void DrawBackgroundOffsetMosaic (int, uint8, uint8, int);
static inline void DrawBackgroundMode7 (int, void (*DrawMath) (uint32, uint32, int), void (*DrawNomath) (uint32, uint32, int), int);
static inline void DrawBackdrop (void);
static inline void RenderScreen (bool8);
static uint16 get_crosshair_color (uint8);
static void S9xDisplayStringType (const char *, int, int, bool, int);
#define TILE_PLUS(t, x) (((t) & 0xfc00) | ((t + x) & 0x3ff))
bool8 S9xGraphicsInit (void)
{
S9xInitTileRenderer();
memset(BlackColourMap, 0, 256 * sizeof(uint16));
IPPU.OBJChanged = TRUE;
Settings.BG_Forced = 0;
S9xFixColourBrightness();
S9xBuildDirectColourMaps();
GFX.Screen = &GFX.ScreenBuffer[GFX.RealPPL * 32];
GFX.ZERO = (uint16 *) malloc(sizeof(uint16) * 0x10000);
GFX.SubScreen = (uint16 *) malloc(GFX.ScreenSize * sizeof(uint16));
GFX.ZBuffer = (uint8 *) malloc(GFX.ScreenSize);
GFX.SubZBuffer = (uint8 *) malloc(GFX.ScreenSize);
if (!GFX.ZERO || !GFX.SubScreen || !GFX.ZBuffer || !GFX.SubZBuffer)
{
S9xGraphicsDeinit();
return (FALSE);
}
// Lookup table for 1/2 color subtraction
memset(GFX.ZERO, 0, 0x10000 * sizeof(uint16));
for (uint32 r = 0; r <= MAX_RED; r++)
{
uint32 r2 = r;
if (r2 & 0x10)
r2 &= ~0x10;
else
r2 = 0;
for (uint32 g = 0; g <= MAX_GREEN; g++)
{
uint32 g2 = g;
if (g2 & GREEN_HI_BIT)
g2 &= ~GREEN_HI_BIT;
else
g2 = 0;
for (uint32 b = 0; b <= MAX_BLUE; b++)
{
uint32 b2 = b;
if (b2 & 0x10)
b2 &= ~0x10;
else
b2 = 0;
GFX.ZERO[BUILD_PIXEL2(r, g, b)] = BUILD_PIXEL2(r2, g2, b2);
GFX.ZERO[BUILD_PIXEL2(r, g, b) & ~ALPHA_BITS_MASK] = BUILD_PIXEL2(r2, g2, b2);
}
}
}
GFX.EndScreenRefreshCallback = NULL;
GFX.EndScreenRefreshCallbackData = NULL;
return (TRUE);
}
void S9xGraphicsDeinit (void)
{
if (GFX.ZERO) { free(GFX.ZERO); GFX.ZERO = NULL; }
if (GFX.SubScreen) { free(GFX.SubScreen); GFX.SubScreen = NULL; }
if (GFX.ZBuffer) { free(GFX.ZBuffer); GFX.ZBuffer = NULL; }
if (GFX.SubZBuffer) { free(GFX.SubZBuffer); GFX.SubZBuffer = NULL; }
GFX.EndScreenRefreshCallback = NULL;
GFX.EndScreenRefreshCallbackData = NULL;
}
void S9xGraphicsScreenResize (void)
{
IPPU.MaxBrightness = PPU.Brightness;
IPPU.Interlace = Memory.FillRAM[0x2133] & 1;
IPPU.InterlaceOBJ = Memory.FillRAM[0x2133] & 2;
IPPU.PseudoHires = Memory.FillRAM[0x2133] & 8;
if (Settings.SupportHiRes && (PPU.BGMode == 5 || PPU.BGMode == 6 || IPPU.PseudoHires))
{
IPPU.DoubleWidthPixels = TRUE;
IPPU.RenderedScreenWidth = SNES_WIDTH << 1;
}
else
{
IPPU.DoubleWidthPixels = FALSE;
IPPU.RenderedScreenWidth = SNES_WIDTH;
}
if (Settings.SupportHiRes && IPPU.Interlace)
{
GFX.PPL = GFX.RealPPL << 1;
IPPU.DoubleHeightPixels = TRUE;
IPPU.RenderedScreenHeight = PPU.ScreenHeight << 1;
GFX.DoInterlace++;
}
else
{
GFX.PPL = GFX.RealPPL;
IPPU.DoubleHeightPixels = FALSE;
IPPU.RenderedScreenHeight = PPU.ScreenHeight;
}
}
void S9xBuildDirectColourMaps (void)
{
IPPU.XB = mul_brightness[PPU.Brightness];
for (uint32 p = 0; p < 8; p++)
for (uint32 c = 0; c < 256; c++)
DirectColourMaps[p][c] = BUILD_PIXEL(IPPU.XB[((c & 7) << 2) | ((p & 1) << 1)], IPPU.XB[((c & 0x38) >> 1) | (p & 2)], IPPU.XB[((c & 0xc0) >> 3) | (p & 4)]);
}
void S9xStartScreenRefresh (void)
{
GFX.InterlaceFrame = !GFX.InterlaceFrame;
if (GFX.DoInterlace)
GFX.DoInterlace--;
if (IPPU.RenderThisFrame)
{
if (!GFX.DoInterlace || !GFX.InterlaceFrame)
{
if (!S9xInitUpdate())
{
IPPU.RenderThisFrame = FALSE;
return;
}
S9xGraphicsScreenResize();
IPPU.RenderedFramesCount++;
}
PPU.MosaicStart = 0;
PPU.RecomputeClipWindows = TRUE;
IPPU.PreviousLine = IPPU.CurrentLine = 0;
memset(GFX.ZBuffer, 0, GFX.ScreenSize);
memset(GFX.SubZBuffer, 0, GFX.ScreenSize);
}
if (++IPPU.FrameCount == (uint32)Memory.ROMFramesPerSecond)
{
IPPU.DisplayedRenderedFrameCount = IPPU.RenderedFramesCount;
IPPU.RenderedFramesCount = 0;
IPPU.FrameCount = 0;
}
if (GFX.InfoStringTimeout > 0 && --GFX.InfoStringTimeout == 0)
GFX.InfoString = NULL;
IPPU.TotalEmulatedFrames++;
}
void S9xEndScreenRefresh (void)
{
if (IPPU.RenderThisFrame)
{
FLUSH_REDRAW();
if (GFX.DoInterlace && GFX.InterlaceFrame == 0)
{
S9xControlEOF();
S9xContinueUpdate(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight);
}
else
{
if (IPPU.ColorsChanged)
{
uint32 saved = PPU.CGDATA[0];
IPPU.ColorsChanged = FALSE;
PPU.CGDATA[0] = saved;
}
S9xControlEOF();
if (Settings.TakeScreenshot)
S9xDoScreenshot(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight);
if (Settings.AutoDisplayMessages)
S9xDisplayMessages(GFX.Screen, GFX.RealPPL, IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight, 1);
S9xDeinitUpdate(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight);
}
}
else
S9xControlEOF();
S9xUpdateCheatsInMemory ();
#ifdef DEBUGGER
if (CPU.Flags & FRAME_ADVANCE_FLAG)
{
if (ICPU.FrameAdvanceCount)
{
ICPU.FrameAdvanceCount--;
IPPU.RenderThisFrame = TRUE;
IPPU.FrameSkip = 0;
}
else
{
CPU.Flags &= ~FRAME_ADVANCE_FLAG;
CPU.Flags |= DEBUG_MODE_FLAG;
}
}
#endif
if (CPU.SRAMModified)
{
if (!CPU.AutoSaveTimer)
{
if (!(CPU.AutoSaveTimer = Settings.AutoSaveDelay * Memory.ROMFramesPerSecond))
CPU.SRAMModified = FALSE;
}
else
{
if (!--CPU.AutoSaveTimer)
{
S9xAutoSaveSRAM();
CPU.SRAMModified = FALSE;
}
}
}
if (GFX.EndScreenRefreshCallback)
GFX.EndScreenRefreshCallback(GFX.EndScreenRefreshCallbackData);
}
void S9xSetEndScreenRefreshCallback(const SGFX::Callback cb, void *const data)
{
GFX.EndScreenRefreshCallback = cb;
GFX.EndScreenRefreshCallbackData = data;
}
void RenderLine (uint8 C)
{
if (IPPU.RenderThisFrame)
{
LineData[C].BG[0].VOffset = PPU.BG[0].VOffset + 1;
LineData[C].BG[0].HOffset = PPU.BG[0].HOffset;
LineData[C].BG[1].VOffset = PPU.BG[1].VOffset + 1;
LineData[C].BG[1].HOffset = PPU.BG[1].HOffset;
if (PPU.BGMode == 7)
{
struct SLineMatrixData *p = &LineMatrixData[C];
p->MatrixA = PPU.MatrixA;
p->MatrixB = PPU.MatrixB;
p->MatrixC = PPU.MatrixC;
p->MatrixD = PPU.MatrixD;
p->CentreX = PPU.CentreX;
p->CentreY = PPU.CentreY;
p->M7HOFS = PPU.M7HOFS;
p->M7VOFS = PPU.M7VOFS;
}
else
{
LineData[C].BG[2].VOffset = PPU.BG[2].VOffset + 1;
LineData[C].BG[2].HOffset = PPU.BG[2].HOffset;
LineData[C].BG[3].VOffset = PPU.BG[3].VOffset + 1;
LineData[C].BG[3].HOffset = PPU.BG[3].HOffset;
}
IPPU.CurrentLine = C + 1;
}
else
{
// if we're not rendering this frame, we still need to update this
// XXX: Check ForceBlank? Or anything else?
if (IPPU.OBJChanged)
SetupOBJ();
PPU.RangeTimeOver |= GFX.OBJLines[C].RTOFlags;
}
}
static inline void RenderScreen (bool8 sub)
{
uint8 BGActive;
int D;
if (!sub)
{
GFX.S = GFX.Screen;
if (GFX.DoInterlace && GFX.InterlaceFrame)
GFX.S += GFX.RealPPL;
GFX.DB = GFX.ZBuffer;
GFX.Clip = IPPU.Clip[0];
BGActive = Memory.FillRAM[0x212c] & ~Settings.BG_Forced;
D = 32;
}
else
{
GFX.S = GFX.SubScreen;
GFX.DB = GFX.SubZBuffer;
GFX.Clip = IPPU.Clip[1];
BGActive = Memory.FillRAM[0x212d] & ~Settings.BG_Forced;
D = (Memory.FillRAM[0x2130] & 2) << 4; // 'do math' depth flag
}
if (BGActive & 0x10)
{
BG.TileAddress = PPU.OBJNameBase;
BG.NameSelect = PPU.OBJNameSelect;
BG.EnableMath = !sub && (Memory.FillRAM[0x2131] & 0x10);
BG.StartPalette = 128;
S9xSelectTileConverter(4, FALSE, sub, FALSE);
S9xSelectTileRenderers(PPU.BGMode, sub, TRUE);
DrawOBJS(D + 4);
}
BG.NameSelect = 0;
S9xSelectTileRenderers(PPU.BGMode, sub, FALSE);
#define DO_BG(n, pal, depth, hires, offset, Zh, Zl, voffoff) \
if (BGActive & (1 << n)) \
{ \
BG.StartPalette = pal; \
BG.EnableMath = !sub && (Memory.FillRAM[0x2131] & (1 << n)); \
BG.TileSizeH = (!hires && PPU.BG[n].BGSize) ? 16 : 8; \
BG.TileSizeV = (PPU.BG[n].BGSize) ? 16 : 8; \
S9xSelectTileConverter(depth, hires, sub, PPU.BGMosaic[n]); \
\
if (offset) \
{ \
BG.OffsetSizeH = (!hires && PPU.BG[2].BGSize) ? 16 : 8; \
BG.OffsetSizeV = (PPU.BG[2].BGSize) ? 16 : 8; \
\
if (PPU.BGMosaic[n] && (hires || PPU.Mosaic > 1)) \
DrawBackgroundOffsetMosaic(n, D + Zh, D + Zl, voffoff); \
else \
DrawBackgroundOffset(n, D + Zh, D + Zl, voffoff); \
} \
else \
{ \
if (PPU.BGMosaic[n] && (hires || PPU.Mosaic > 1)) \
DrawBackgroundMosaic(n, D + Zh, D + Zl); \
else \
DrawBackground(n, D + Zh, D + Zl); \
} \
}
switch (PPU.BGMode)
{
case 0:
DO_BG(0, 0, 2, FALSE, FALSE, 15, 11, 0);
DO_BG(1, 32, 2, FALSE, FALSE, 14, 10, 0);
DO_BG(2, 64, 2, FALSE, FALSE, 7, 3, 0);
DO_BG(3, 96, 2, FALSE, FALSE, 6, 2, 0);
break;
case 1:
DO_BG(0, 0, 4, FALSE, FALSE, 15, 11, 0);
DO_BG(1, 0, 4, FALSE, FALSE, 14, 10, 0);
DO_BG(2, 0, 2, FALSE, FALSE, (PPU.BG3Priority ? 17 : 7), 3, 0);
break;
case 2:
DO_BG(0, 0, 4, FALSE, TRUE, 15, 7, 8);
DO_BG(1, 0, 4, FALSE, TRUE, 11, 3, 8);
break;
case 3:
DO_BG(0, 0, 8, FALSE, FALSE, 15, 7, 0);
DO_BG(1, 0, 4, FALSE, FALSE, 11, 3, 0);
break;
case 4:
DO_BG(0, 0, 8, FALSE, TRUE, 15, 7, 0);
DO_BG(1, 0, 2, FALSE, TRUE, 11, 3, 0);
break;
case 5:
DO_BG(0, 0, 4, TRUE, FALSE, 15, 7, 0);
DO_BG(1, 0, 2, TRUE, FALSE, 11, 3, 0);
break;
case 6:
DO_BG(0, 0, 4, TRUE, TRUE, 15, 7, 8);
break;
case 7:
if (BGActive & 0x01)
{
BG.EnableMath = !sub && (Memory.FillRAM[0x2131] & 1);
DrawBackgroundMode7(0, GFX.DrawMode7BG1Math, GFX.DrawMode7BG1Nomath, D);
}
if ((Memory.FillRAM[0x2133] & 0x40) && (BGActive & 0x02))
{
BG.EnableMath = !sub && (Memory.FillRAM[0x2131] & 2);
DrawBackgroundMode7(1, GFX.DrawMode7BG2Math, GFX.DrawMode7BG2Nomath, D);
}
break;
}
#undef DO_BG
BG.EnableMath = !sub && (Memory.FillRAM[0x2131] & 0x20);
DrawBackdrop();
}
void S9xUpdateScreen (void)
{
if (IPPU.OBJChanged || IPPU.InterlaceOBJ)
SetupOBJ();
// XXX: Check ForceBlank? Or anything else?
PPU.RangeTimeOver |= GFX.OBJLines[GFX.EndY].RTOFlags;
GFX.StartY = IPPU.PreviousLine;
if ((GFX.EndY = IPPU.CurrentLine - 1) >= PPU.ScreenHeight)
GFX.EndY = PPU.ScreenHeight - 1;
if (!PPU.ForcedBlanking)
{
// If force blank, may as well completely skip all this. We only did
// the OBJ because (AFAWK) the RTO flags are updated even during force-blank.
if (PPU.RecomputeClipWindows)
{
S9xComputeClipWindows();
PPU.RecomputeClipWindows = FALSE;
}
if (Settings.SupportHiRes)
{
if (!IPPU.DoubleWidthPixels && (PPU.BGMode == 5 || PPU.BGMode == 6 || IPPU.PseudoHires))
{
// Have to back out of the regular speed hack
for (uint32 y = 0; y < GFX.StartY; y++)
{
uint16 *p = GFX.Screen + y * GFX.PPL + 255;
uint16 *q = GFX.Screen + y * GFX.PPL + 510;
for (int x = 255; x >= 0; x--, p--, q -= 2)
*q = *(q + 1) = *p;
}
IPPU.DoubleWidthPixels = TRUE;
IPPU.RenderedScreenWidth = 512;
}
if (!IPPU.DoubleHeightPixels && IPPU.Interlace && (PPU.BGMode == 5 || PPU.BGMode == 6))
{
IPPU.DoubleHeightPixels = TRUE;
IPPU.RenderedScreenHeight = PPU.ScreenHeight << 1;
GFX.PPL = GFX.RealPPL << 1;
GFX.DoInterlace = 2;
for (int32 y = (int32) GFX.StartY - 2; y >= 0; y--)
memmove(GFX.Screen + (y + 1) * GFX.PPL, GFX.Screen + y * GFX.RealPPL, GFX.PPL * sizeof(uint16));
}
}
if ((Memory.FillRAM[0x2130] & 0x30) != 0x30 && (Memory.FillRAM[0x2131] & 0x3f))
GFX.FixedColour = BUILD_PIXEL(IPPU.XB[PPU.FixedColourRed], IPPU.XB[PPU.FixedColourGreen], IPPU.XB[PPU.FixedColourBlue]);
if (PPU.BGMode == 5 || PPU.BGMode == 6 || IPPU.PseudoHires ||
((Memory.FillRAM[0x2130] & 0x30) != 0x30 && (Memory.FillRAM[0x2130] & 2) && (Memory.FillRAM[0x2131] & 0x3f) && (Memory.FillRAM[0x212d] & 0x1f)))
// If hires (Mode 5/6 or pseudo-hires) or math is to be done
// involving the subscreen, then we need to render the subscreen...
RenderScreen(TRUE);
RenderScreen(FALSE);
}
else
{
const uint16 black = BUILD_PIXEL(0, 0, 0);
GFX.S = GFX.Screen + GFX.StartY * GFX.PPL;
if (GFX.DoInterlace && GFX.InterlaceFrame)
GFX.S += GFX.RealPPL;
for (uint32 l = GFX.StartY; l <= GFX.EndY; l++, GFX.S += GFX.PPL)
for (int x = 0; x < IPPU.RenderedScreenWidth; x++)
GFX.S[x] = black;
}
IPPU.PreviousLine = IPPU.CurrentLine;
}
static void SetupOBJ (void)
{
int SmallWidth, SmallHeight, LargeWidth, LargeHeight;
switch (PPU.OBJSizeSelect)
{
case 0:
SmallWidth = SmallHeight = 8;
LargeWidth = LargeHeight = 16;
break;
case 1:
SmallWidth = SmallHeight = 8;
LargeWidth = LargeHeight = 32;
break;
case 2:
SmallWidth = SmallHeight = 8;
LargeWidth = LargeHeight = 64;
break;
case 3:
SmallWidth = SmallHeight = 16;
LargeWidth = LargeHeight = 32;
break;
case 4:
SmallWidth = SmallHeight = 16;
LargeWidth = LargeHeight = 64;
break;
case 5:
default:
SmallWidth = SmallHeight = 32;
LargeWidth = LargeHeight = 64;
break;
case 6:
SmallWidth = 16; SmallHeight = 32;
LargeWidth = 32; LargeHeight = 64;
break;
case 7:
SmallWidth = 16; SmallHeight = 32;
LargeWidth = LargeHeight = 32;
break;
}
int inc = IPPU.InterlaceOBJ ? 2 : 1;
int startline = (IPPU.InterlaceOBJ && GFX.InterlaceFrame) ? 1 : 0;
// OK, we have three cases here. Either there's no priority, priority is
// normal FirstSprite, or priority is FirstSprite+Y. The first two are
// easy, the last is somewhat more ... interesting. So we split them up.
int Height;
uint8 S;
int sprite_limit = (Settings.MaxSpriteTilesPerLine == 128) ? 128 : 32;
if (!PPU.OAMPriorityRotation || !(PPU.OAMFlip & PPU.OAMAddr & 1)) // normal case
{
uint8 LineOBJ[SNES_HEIGHT_EXTENDED];
memset(LineOBJ, 0, sizeof(LineOBJ));
for (int i = 0; i < SNES_HEIGHT_EXTENDED; i++)
{
GFX.OBJLines[i].RTOFlags = 0;
GFX.OBJLines[i].Tiles = Settings.MaxSpriteTilesPerLine;
for (int j = 0; j < sprite_limit; j++)
GFX.OBJLines[i].OBJ[j].Sprite = -1;
}
uint8 FirstSprite = PPU.FirstSprite;
S = FirstSprite;
do
{
if (PPU.OBJ[S].Size)
{
GFX.OBJWidths[S] = LargeWidth;
Height = LargeHeight;
}
else
{
GFX.OBJWidths[S] = SmallWidth;
Height = SmallHeight;
}
int HPos = PPU.OBJ[S].HPos;
if (HPos == -256)
HPos = 0;
if (HPos > -GFX.OBJWidths[S] && HPos <= 256)
{
if (HPos < 0)
GFX.OBJVisibleTiles[S] = (GFX.OBJWidths[S] + HPos + 7) >> 3;
else
if (HPos + GFX.OBJWidths[S] > 255)
GFX.OBJVisibleTiles[S] = (256 - HPos + 7) >> 3;
else
GFX.OBJVisibleTiles[S] = GFX.OBJWidths[S] >> 3;
for (uint8 line = startline, Y = (uint8) (PPU.OBJ[S].VPos & 0xff); line < Height; Y++, line += inc)
{
if (Y >= SNES_HEIGHT_EXTENDED)
continue;
if (LineOBJ[Y] >= sprite_limit)
{
GFX.OBJLines[Y].RTOFlags |= 0x40;
continue;
}
GFX.OBJLines[Y].Tiles -= GFX.OBJVisibleTiles[S];
if (GFX.OBJLines[Y].Tiles < 0)
GFX.OBJLines[Y].RTOFlags |= 0x80;
GFX.OBJLines[Y].OBJ[LineOBJ[Y]].Sprite = S;
if (PPU.OBJ[S].VFlip)
// Yes, Width not Height. It so happens that the
// sprites with H=2*W flip as two WxW sprites.
GFX.OBJLines[Y].OBJ[LineOBJ[Y]].Line = line ^ (GFX.OBJWidths[S] - 1);
else
GFX.OBJLines[Y].OBJ[LineOBJ[Y]].Line = line;
LineOBJ[Y]++;
}
}
S = (S + 1) & 0x7f;
} while (S != FirstSprite);
for (int Y = 1; Y < SNES_HEIGHT_EXTENDED; Y++)
GFX.OBJLines[Y].RTOFlags |= GFX.OBJLines[Y - 1].RTOFlags;
}
else // evil FirstSprite+Y case
{
// First, find out which sprites are on which lines
uint8 OBJOnLine[SNES_HEIGHT_EXTENDED][128];
// memset(OBJOnLine, 0, sizeof(OBJOnLine));
/* Hold on here, that's a lot of bytes to initialise at once!
* So we only initialise them per line, as needed. [Neb]
* Bonus: We can quickly avoid looping if a line has no OBJs.
*/
bool8 AnyOBJOnLine[SNES_HEIGHT_EXTENDED];
memset(AnyOBJOnLine, FALSE, sizeof(AnyOBJOnLine)); // better
for (S = 0; S < 128; S++)
{
if (PPU.OBJ[S].Size)
{
GFX.OBJWidths[S] = LargeWidth;
Height = LargeHeight;
}
else
{
GFX.OBJWidths[S] = SmallWidth;
Height = SmallHeight;
}
int HPos = PPU.OBJ[S].HPos;
if (HPos == -256)
HPos = 256;
if (HPos > -GFX.OBJWidths[S] && HPos <= 256)
{
if (HPos < 0)
GFX.OBJVisibleTiles[S] = (GFX.OBJWidths[S] + HPos + 7) >> 3;
else
if (HPos + GFX.OBJWidths[S] >= 257)
GFX.OBJVisibleTiles[S] = (257 - HPos + 7) >> 3;
else
GFX.OBJVisibleTiles[S] = GFX.OBJWidths[S] >> 3;
for (uint8 line = startline, Y = (uint8) (PPU.OBJ[S].VPos & 0xff); line < Height; Y++, line += inc)
{
if (Y >= SNES_HEIGHT_EXTENDED)
continue;
if (!AnyOBJOnLine[Y]) {
memset(OBJOnLine[Y], 0, sizeof(OBJOnLine[Y]));
AnyOBJOnLine[Y] = TRUE;
}
if (PPU.OBJ[S].VFlip)
// Yes, Width not Height. It so happens that the
// sprites with H=2*W flip as two WxW sprites.
OBJOnLine[Y][S] = (line ^ (GFX.OBJWidths[S] - 1)) | 0x80;
else
OBJOnLine[Y][S] = line | 0x80;
}
}
}
// Now go through and pull out those OBJ that are actually visible.
int j;
for (int Y = 0; Y < SNES_HEIGHT_EXTENDED; Y++)
{
GFX.OBJLines[Y].RTOFlags = Y ? GFX.OBJLines[Y - 1].RTOFlags : 0;
GFX.OBJLines[Y].Tiles = Settings.MaxSpriteTilesPerLine;
uint8 FirstSprite = (PPU.FirstSprite + Y) & 0x7f;
S = FirstSprite;
j = 0;
if (AnyOBJOnLine[Y])
{
do
{
if (OBJOnLine[Y][S])
{
if (j >= sprite_limit)
{
GFX.OBJLines[Y].RTOFlags |= 0x40;
break;
}
GFX.OBJLines[Y].Tiles -= GFX.OBJVisibleTiles[S];
if (GFX.OBJLines[Y].Tiles < 0)
GFX.OBJLines[Y].RTOFlags |= 0x80;
GFX.OBJLines[Y].OBJ[j].Sprite = S;
GFX.OBJLines[Y].OBJ[j++].Line = OBJOnLine[Y][S] & ~0x80;
}
S = (S + 1) & 0x7f;
} while (S != FirstSprite);
}
if (j < sprite_limit)
GFX.OBJLines[Y].OBJ[j].Sprite = -1;
}
}
IPPU.OBJChanged = FALSE;
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC push_options
#pragma GCC optimize ("no-tree-vrp")
#endif
static void DrawOBJS (int D)
{
void (*DrawTile) (uint32, uint32, uint32, uint32) = NULL;
void (*DrawClippedTile) (uint32, uint32, uint32, uint32, uint32, uint32) = NULL;
int PixWidth = IPPU.DoubleWidthPixels ? 2 : 1;
BG.InterlaceLine = GFX.InterlaceFrame ? 8 : 0;
GFX.Z1 = 2;
int sprite_limit = (Settings.MaxSpriteTilesPerLine == 128) ? 128 : 32;
for (uint32 Y = GFX.StartY, Offset = Y * GFX.PPL; Y <= GFX.EndY; Y++, Offset += GFX.PPL)
{
int I = 0;
int tiles = GFX.OBJLines[Y].Tiles;
for (int S = GFX.OBJLines[Y].OBJ[I].Sprite; S >= 0 && I < sprite_limit; S = GFX.OBJLines[Y].OBJ[++I].Sprite)
{
tiles += GFX.OBJVisibleTiles[S];
if (tiles <= 0)
continue;
int BaseTile = (((GFX.OBJLines[Y].OBJ[I].Line << 1) + (PPU.OBJ[S].Name & 0xf0)) & 0xf0) | (PPU.OBJ[S].Name & 0x100) | (PPU.OBJ[S].Palette << 10);
int TileX = PPU.OBJ[S].Name & 0x0f;
int TileLine = (GFX.OBJLines[Y].OBJ[I].Line & 7) * 8;
int TileInc = 1;
if (PPU.OBJ[S].HFlip)
{
TileX = (TileX + (GFX.OBJWidths[S] >> 3) - 1) & 0x0f;
BaseTile |= H_FLIP;
TileInc = -1;
}
GFX.Z2 = D + PPU.OBJ[S].Priority * 4;
int DrawMode = 3;
int clip = 0, next_clip = -1000;
int X = PPU.OBJ[S].HPos;
if (X == -256)
X = 256;
for (int t = tiles, O = Offset + X * PixWidth; X <= 256 && X < PPU.OBJ[S].HPos + GFX.OBJWidths[S]; TileX = (TileX + TileInc) & 0x0f, X += 8, O += 8 * PixWidth)
{
if (X < -7 || --t < 0 || X == 256)
continue;
for (int x = X; x < X + 8;)
{
if (x >= next_clip)
{
for (; clip < GFX.Clip[4].Count && GFX.Clip[4].Left[clip] <= x; clip++) ;
if (clip == 0 || x >= GFX.Clip[4].Right[clip - 1])
{
DrawMode = 0;
next_clip = ((clip < GFX.Clip[4].Count) ? GFX.Clip[4].Left[clip] : 1000);
}
else
{
DrawMode = GFX.Clip[4].DrawMode[clip - 1];
next_clip = GFX.Clip[4].Right[clip - 1];
GFX.ClipColors = !(DrawMode & 1);
if (BG.EnableMath && (PPU.OBJ[S].Palette & 4) && (DrawMode & 2))
{
DrawTile = GFX.DrawTileMath;
DrawClippedTile = GFX.DrawClippedTileMath;
}
else
{
DrawTile = GFX.DrawTileNomath;
DrawClippedTile = GFX.DrawClippedTileNomath;
}
}
}
if (x == X && x + 8 < next_clip)
{
if (DrawMode)
DrawTile(BaseTile | TileX, O, TileLine, 1);
x += 8;
}
else
{
int w = (next_clip <= X + 8) ? next_clip - x : X + 8 - x;
if (DrawMode)
DrawClippedTile(BaseTile | TileX, O, x - X, w, TileLine, 1);
x += w;
}
}
}
}
}
}
#if defined(__GNUC__) && !defined(__clang__)
#pragma GCC pop_options
#endif
static void DrawBackground (int bg, uint8 Zh, uint8 Zl)
{
BG.TileAddress = PPU.BG[bg].NameBase << 1;
uint32 Tile;
uint16 *SC0, *SC1, *SC2, *SC3;
SC0 = (uint16 *) &Memory.VRAM[PPU.BG[bg].SCBase << 1];
SC1 = (PPU.BG[bg].SCSize & 1) ? SC0 + 1024 : SC0;
if (SC1 >= (uint16 *) (Memory.VRAM + 0x10000))
SC1 -= 0x8000;
SC2 = (PPU.BG[bg].SCSize & 2) ? SC1 + 1024 : SC0;
if (SC2 >= (uint16 *) (Memory.VRAM + 0x10000))
SC2 -= 0x8000;
SC3 = (PPU.BG[bg].SCSize & 1) ? SC2 + 1024 : SC2;
if (SC3 >= (uint16 *) (Memory.VRAM + 0x10000))
SC3 -= 0x8000;
uint32 Lines;
int OffsetMask = (BG.TileSizeH == 16) ? 0x3ff : 0x1ff;
int OffsetShift = (BG.TileSizeV == 16) ? 4 : 3;
int PixWidth = IPPU.DoubleWidthPixels ? 2 : 1;
bool8 HiresInterlace = IPPU.Interlace && IPPU.DoubleWidthPixels;
void (*DrawTile) (uint32, uint32, uint32, uint32);
void (*DrawClippedTile) (uint32, uint32, uint32, uint32, uint32, uint32);
for (int clip = 0; clip < GFX.Clip[bg].Count; clip++)
{
GFX.ClipColors = !(GFX.Clip[bg].DrawMode[clip] & 1);
if (BG.EnableMath && (GFX.Clip[bg].DrawMode[clip] & 2))
{
DrawTile = GFX.DrawTileMath;
DrawClippedTile = GFX.DrawClippedTileMath;
}
else
{
DrawTile = GFX.DrawTileNomath;
DrawClippedTile = GFX.DrawClippedTileNomath;
}
for (uint32 Y = GFX.StartY; Y <= GFX.EndY; Y += Lines)
{
uint32 Y2 = HiresInterlace ? Y * 2 + GFX.InterlaceFrame : Y;
uint32 VOffset = LineData[Y].BG[bg].VOffset + (HiresInterlace ? 1 : 0);
uint32 HOffset = LineData[Y].BG[bg].HOffset;
int VirtAlign = ((Y2 + VOffset) & 7) >> (HiresInterlace ? 1 : 0);
for (Lines = 1; Lines < GFX.LinesPerTile - VirtAlign; Lines++)
{
if ((VOffset != LineData[Y + Lines].BG[bg].VOffset) || (HOffset != LineData[Y + Lines].BG[bg].HOffset))
break;
}
if (Y + Lines > GFX.EndY)
Lines = GFX.EndY - Y + 1;
VirtAlign <<= 3;
uint32 t1, t2;
uint32 TilemapRow = (VOffset + Y2) >> OffsetShift;
BG.InterlaceLine = ((VOffset + Y2) & 1) << 3;
if ((VOffset + Y2) & 8)
{
t1 = 16;
t2 = 0;
}
else
{
t1 = 0;
t2 = 16;
}
uint16 *b1, *b2;
if (TilemapRow & 0x20)
{
b1 = SC2;
b2 = SC3;
}
else
{
b1 = SC0;
b2 = SC1;
}
b1 += (TilemapRow & 0x1f) << 5;
b2 += (TilemapRow & 0x1f) << 5;
uint32 Left = GFX.Clip[bg].Left[clip];
uint32 Right = GFX.Clip[bg].Right[clip];
uint32 Offset = Left * PixWidth + Y * GFX.PPL;
uint32 HPos = (HOffset + Left) & OffsetMask;
uint32 HTile = HPos >> 3;
uint16 *t;
if (BG.TileSizeH == 8)
{
if (HTile > 31)
t = b2 + (HTile & 0x1f);
else
t = b1 + HTile;
}
else
{
if (HTile > 63)
t = b2 + ((HTile >> 1) & 0x1f);
else
t = b1 + (HTile >> 1);
}
uint32 Width = Right - Left;
if (HPos & 7)
{
uint32 l = HPos & 7;
uint32 w = 8 - l;
if (w > Width)
w = Width;
Offset -= l * PixWidth;
Tile = READ_WORD(t);
GFX.Z1 = GFX.Z2 = (Tile & 0x2000) ? Zh : Zl;
if (BG.TileSizeV == 16)
Tile = TILE_PLUS(Tile, ((Tile & V_FLIP) ? t2 : t1));
if (BG.TileSizeH == 8)
{
DrawClippedTile(Tile, Offset, l, w, VirtAlign, Lines);
t++;
if (HTile == 31)
t = b2;
else
if (HTile == 63)
t = b1;
}
else
{
if (!(Tile & H_FLIP))
DrawClippedTile(TILE_PLUS(Tile, (HTile & 1)), Offset, l, w, VirtAlign, Lines);
else
DrawClippedTile(TILE_PLUS(Tile, 1 - (HTile & 1)), Offset, l, w, VirtAlign, Lines);
t += HTile & 1;
if (HTile == 63)
t = b2;
else
if (HTile == 127)
t = b1;
}
HTile++;
Offset += 8 * PixWidth;
Width -= w;
}
while (Width >= 8)
{
Tile = READ_WORD(t);
GFX.Z1 = GFX.Z2 = (Tile & 0x2000) ? Zh : Zl;
if (BG.TileSizeV == 16)
Tile = TILE_PLUS(Tile, ((Tile & V_FLIP) ? t2 : t1));
if (BG.TileSizeH == 8)
{
DrawTile(Tile, Offset, VirtAlign, Lines);
t++;
if (HTile == 31)
t = b2;
else
if (HTile == 63)
t = b1;
}
else
{
if (!(Tile & H_FLIP))
DrawTile(TILE_PLUS(Tile, (HTile & 1)), Offset, VirtAlign, Lines);
else
DrawTile(TILE_PLUS(Tile, 1 - (HTile & 1)), Offset, VirtAlign, Lines);
t += HTile & 1;
if (HTile == 63)
t = b2;
else
if (HTile == 127)
t = b1;
}
HTile++;
Offset += 8 * PixWidth;
Width -= 8;
}
if (Width)
{
Tile = READ_WORD(t);
GFX.Z1 = GFX.Z2 = (Tile & 0x2000) ? Zh : Zl;
if (BG.TileSizeV == 16)
Tile = TILE_PLUS(Tile, ((Tile & V_FLIP) ? t2 : t1));
if (BG.TileSizeH == 8)
DrawClippedTile(Tile, Offset, 0, Width, VirtAlign, Lines);
else
{
if (!(Tile & H_FLIP))
DrawClippedTile(TILE_PLUS(Tile, (HTile & 1)), Offset, 0, Width, VirtAlign, Lines);
else
DrawClippedTile(TILE_PLUS(Tile, 1 - (HTile & 1)), Offset, 0, Width, VirtAlign, Lines);
}
}
}
}
}
static void DrawBackgroundMosaic (int bg, uint8 Zh, uint8 Zl)
{
BG.TileAddress = PPU.BG[bg].NameBase << 1;
uint32 Tile;
uint16 *SC0, *SC1, *SC2, *SC3;
SC0 = (uint16 *) &Memory.VRAM[PPU.BG[bg].SCBase << 1];
SC1 = (PPU.BG[bg].SCSize & 1) ? SC0 + 1024 : SC0;
if (SC1 >= (uint16 *) (Memory.VRAM + 0x10000))
SC1 -= 0x8000;
SC2 = (PPU.BG[bg].SCSize & 2) ? SC1 + 1024 : SC0;
if (SC2 >= (uint16 *) (Memory.VRAM + 0x10000))
SC2 -= 0x8000;
SC3 = (PPU.BG[bg].SCSize & 1) ? SC2 + 1024 : SC2;
if (SC3 >= (uint16 *) (Memory.VRAM + 0x10000))
SC3 -= 0x8000;
int Lines;
int OffsetMask = (BG.TileSizeH == 16) ? 0x3ff : 0x1ff;
int OffsetShift = (BG.TileSizeV == 16) ? 4 : 3;
int PixWidth = IPPU.DoubleWidthPixels ? 2 : 1;
bool8 HiresInterlace = IPPU.Interlace && IPPU.DoubleWidthPixels;
void (*DrawPix) (uint32, uint32, uint32, uint32, uint32, uint32);
int MosaicStart = ((uint32) GFX.StartY - PPU.MosaicStart) % PPU.Mosaic;
for (int clip = 0; clip < GFX.Clip[bg].Count; clip++)
{
GFX.ClipColors = !(GFX.Clip[bg].DrawMode[clip] & 1);
if (BG.EnableMath && (GFX.Clip[bg].DrawMode[clip] & 2))
DrawPix = GFX.DrawMosaicPixelMath;
else
DrawPix = GFX.DrawMosaicPixelNomath;
for (uint32 Y = GFX.StartY - MosaicStart; Y <= GFX.EndY; Y += PPU.Mosaic)
{
uint32 Y2 = HiresInterlace ? Y * 2 : Y;
uint32 VOffset = LineData[Y + MosaicStart].BG[bg].VOffset + (HiresInterlace ? 1 : 0);
uint32 HOffset = LineData[Y + MosaicStart].BG[bg].HOffset;
Lines = PPU.Mosaic - MosaicStart;
if (Y + MosaicStart + Lines > GFX.EndY)
Lines = GFX.EndY - Y - MosaicStart + 1;
int VirtAlign = (((Y2 + VOffset) & 7) >> (HiresInterlace ? 1 : 0)) << 3;
uint32 t1, t2;
uint32 TilemapRow = (VOffset + Y2) >> OffsetShift;
BG.InterlaceLine = ((VOffset + Y2) & 1) << 3;
if ((VOffset + Y2) & 8)
{
t1 = 16;
t2 = 0;
}
else
{
t1 = 0;
t2 = 16;
}
uint16 *b1, *b2;
if (TilemapRow & 0x20)
{
b1 = SC2;
b2 = SC3;
}
else
{
b1 = SC0;
b2 = SC1;
}
b1 += (TilemapRow & 0x1f) << 5;
b2 += (TilemapRow & 0x1f) << 5;
uint32 Left = GFX.Clip[bg].Left[clip];
uint32 Right = GFX.Clip[bg].Right[clip];
uint32 Offset = Left * PixWidth + (Y + MosaicStart) * GFX.PPL;
uint32 HPos = (HOffset + Left - (Left % PPU.Mosaic)) & OffsetMask;
uint32 HTile = HPos >> 3;
uint16 *t;
if (BG.TileSizeH == 8)
{
if (HTile > 31)
t = b2 + (HTile & 0x1f);
else
t = b1 + HTile;
}
else
{
if (HTile > 63)
t = b2 + ((HTile >> 1) & 0x1f);
else
t = b1 + (HTile >> 1);
}
uint32 Width = Right - Left;
HPos &= 7;
while (Left < Right)
{
uint32 w = PPU.Mosaic - (Left % PPU.Mosaic);
if (w > Width)
w = Width;
Tile = READ_WORD(t);
GFX.Z1 = GFX.Z2 = (Tile & 0x2000) ? Zh : Zl;
if (BG.TileSizeV == 16)
Tile = TILE_PLUS(Tile, ((Tile & V_FLIP) ? t2 : t1));
if (BG.TileSizeH == 8)
DrawPix(Tile, Offset, VirtAlign, HPos & 7, w, Lines);
else
{
if (!(Tile & H_FLIP))
DrawPix(TILE_PLUS(Tile, (HTile & 1)), Offset, VirtAlign, HPos & 7, w, Lines);
else
DrawPix(TILE_PLUS(Tile, 1 - (HTile & 1)), Offset, VirtAlign, HPos & 7, w, Lines);
}
HPos += PPU.Mosaic;
while (HPos >= 8)
{
HPos -= 8;
if (BG.TileSizeH == 8)
{
t++;
if (HTile == 31)
t = b2;
else
if (HTile == 63)
t = b1;
}
else
{
t += HTile & 1;
if (HTile == 63)
t = b2;
else
if (HTile == 127)
t = b1;
}
HTile++;
}
Offset += w * PixWidth;
Width -= w;
Left += w;
}
MosaicStart = 0;
}
}
}
static void DrawBackgroundOffset (int bg, uint8 Zh, uint8 Zl, int VOffOff)
{
BG.TileAddress = PPU.BG[bg].NameBase << 1;
uint32 Tile;
uint16 *SC0, *SC1, *SC2, *SC3;
uint16 *BPS0, *BPS1, *BPS2, *BPS3;
BPS0 = (uint16 *) &Memory.VRAM[PPU.BG[2].SCBase << 1];
BPS1 = (PPU.BG[2].SCSize & 1) ? BPS0 + 1024 : BPS0;
if (BPS1 >= (uint16 *) (Memory.VRAM + 0x10000))
BPS1 -= 0x8000;
BPS2 = (PPU.BG[2].SCSize & 2) ? BPS1 + 1024 : BPS0;
if (BPS2 >= (uint16 *) (Memory.VRAM + 0x10000))
BPS2 -= 0x8000;
BPS3 = (PPU.BG[2].SCSize & 1) ? BPS2 + 1024 : BPS2;
if (BPS3 >= (uint16 *) (Memory.VRAM + 0x10000))
BPS3 -= 0x8000;
SC0 = (uint16 *) &Memory.VRAM[PPU.BG[bg].SCBase << 1];
SC1 = (PPU.BG[bg].SCSize & 1) ? SC0 + 1024 : SC0;
if (SC1 >= (uint16 *) (Memory.VRAM + 0x10000))
SC1 -= 0x8000;
SC2 = (PPU.BG[bg].SCSize & 2) ? SC1 + 1024 : SC0;
if (SC2 >= (uint16 *) (Memory.VRAM + 0x10000))
SC2 -= 0x8000;
SC3 = (PPU.BG[bg].SCSize & 1) ? SC2 + 1024 : SC2;
if (SC3 >= (uint16 *) (Memory.VRAM + 0x10000))
SC3 -= 0x8000;
int OffsetMask = (BG.TileSizeH == 16) ? 0x3ff : 0x1ff;
int OffsetShift = (BG.TileSizeV == 16) ? 4 : 3;
int Offset2Mask = (BG.OffsetSizeH == 16) ? 0x3ff : 0x1ff;
int Offset2Shift = (BG.OffsetSizeV == 16) ? 4 : 3;
int OffsetEnableMask = 0x2000 << bg;
int PixWidth = IPPU.DoubleWidthPixels ? 2 : 1;
bool8 HiresInterlace = IPPU.Interlace && IPPU.DoubleWidthPixels;
void (*DrawClippedTile) (uint32, uint32, uint32, uint32, uint32, uint32);
for (int clip = 0; clip < GFX.Clip[bg].Count; clip++)
{
GFX.ClipColors = !(GFX.Clip[bg].DrawMode[clip] & 1);
if (BG.EnableMath && (GFX.Clip[bg].DrawMode[clip] & 2))
{
DrawClippedTile = GFX.DrawClippedTileMath;
}
else
{
DrawClippedTile = GFX.DrawClippedTileNomath;
}
for (uint32 Y = GFX.StartY; Y <= GFX.EndY; Y++)
{
uint32 Y2 = HiresInterlace ? Y * 2 + GFX.InterlaceFrame : Y;
uint32 VOff = LineData[Y].BG[2].VOffset - 1;
uint32 HOff = LineData[Y].BG[2].HOffset;
uint32 HOffsetRow = VOff >> Offset2Shift;
uint32 VOffsetRow = (VOff + VOffOff) >> Offset2Shift;
uint16 *s, *s1, *s2;
if (HOffsetRow & 0x20)
{
s1 = BPS2;
s2 = BPS3;
}
else
{
s1 = BPS0;
s2 = BPS1;
}
s1 += (HOffsetRow & 0x1f) << 5;
s2 += (HOffsetRow & 0x1f) << 5;
s = ((VOffsetRow & 0x20) ? BPS2 : BPS0) + ((VOffsetRow & 0x1f) << 5);
int32 VOffsetOffset = s - s1;
uint32 Left = GFX.Clip[bg].Left[clip];
uint32 Right = GFX.Clip[bg].Right[clip];
uint32 Offset = Left * PixWidth + Y * GFX.PPL;
uint32 HScroll = LineData[Y].BG[bg].HOffset;
bool8 left_edge = (Left < (8 - (HScroll & 7)));
uint32 Width = Right - Left;
while (Left < Right)
{
uint32 VOffset, HOffset;
if (left_edge)
{
// SNES cannot do OPT for leftmost tile column
VOffset = LineData[Y].BG[bg].VOffset;
HOffset = HScroll;
left_edge = FALSE;
}
else
{
int HOffTile = ((HOff + Left - 1) & Offset2Mask) >> 3;
if (BG.OffsetSizeH == 8)
{
if (HOffTile > 31)
s = s2 + (HOffTile & 0x1f);
else
s = s1 + HOffTile;
}
else
{
if (HOffTile > 63)
s = s2 + ((HOffTile >> 1) & 0x1f);
else
s = s1 + (HOffTile >> 1);
}
uint16 HCellOffset = READ_WORD(s);
uint16 VCellOffset;
if (VOffOff)
VCellOffset = READ_WORD(s + VOffsetOffset);
else
{
if (HCellOffset & 0x8000)
{
VCellOffset = HCellOffset;
HCellOffset = 0;
}
else
VCellOffset = 0;
}
if (VCellOffset & OffsetEnableMask)
VOffset = VCellOffset + 1;
else
VOffset = LineData[Y].BG[bg].VOffset;
if (HCellOffset & OffsetEnableMask)
HOffset = (HCellOffset & ~7) | (HScroll & 7);
else
HOffset = HScroll;
}
if (HiresInterlace)
VOffset++;
uint32 t1, t2;
int VirtAlign = (((Y2 + VOffset) & 7) >> (HiresInterlace ? 1 : 0)) << 3;
int TilemapRow = (VOffset + Y2) >> OffsetShift;
BG.InterlaceLine = ((VOffset + Y2) & 1) << 3;
if ((VOffset + Y2) & 8)
{
t1 = 16;
t2 = 0;
}
else
{
t1 = 0;
t2 = 16;
}
uint16 *b1, *b2;
if (TilemapRow & 0x20)
{
b1 = SC2;
b2 = SC3;
}
else
{
b1 = SC0;
b2 = SC1;
}
b1 += (TilemapRow & 0x1f) << 5;
b2 += (TilemapRow & 0x1f) << 5;
uint32 HPos = (HOffset + Left) & OffsetMask;
uint32 HTile = HPos >> 3;
uint16 *t;
if (BG.TileSizeH == 8)
{
if (HTile > 31)
t = b2 + (HTile & 0x1f);
else
t = b1 + HTile;
}
else
{
if (HTile > 63)
t = b2 + ((HTile >> 1) & 0x1f);
else
t = b1 + (HTile >> 1);
}
uint32 l = HPos & 7;
uint32 w = 8 - l;
if (w > Width)
w = Width;
Offset -= l * PixWidth;
Tile = READ_WORD(t);
GFX.Z1 = GFX.Z2 = (Tile & 0x2000) ? Zh : Zl;
if (BG.TileSizeV == 16)
Tile = TILE_PLUS(Tile, ((Tile & V_FLIP) ? t2 : t1));
if (BG.TileSizeH == 8)
{
DrawClippedTile(Tile, Offset, l, w, VirtAlign, 1);
}
else
{
if (!(Tile & H_FLIP))
DrawClippedTile(TILE_PLUS(Tile, (HTile & 1)), Offset, l, w, VirtAlign, 1);
else
DrawClippedTile(TILE_PLUS(Tile, 1 - (HTile & 1)), Offset, l, w, VirtAlign, 1);
}
Left += w;
Offset += 8 * PixWidth;
Width -= w;
}
}
}
}
static void DrawBackgroundOffsetMosaic (int bg, uint8 Zh, uint8 Zl, int VOffOff)
{
BG.TileAddress = PPU.BG[bg].NameBase << 1;
uint32 Tile;
uint16 *SC0, *SC1, *SC2, *SC3;
uint16 *BPS0, *BPS1, *BPS2, *BPS3;
BPS0 = (uint16 *) &Memory.VRAM[PPU.BG[2].SCBase << 1];
BPS1 = (PPU.BG[2].SCSize & 1) ? BPS0 + 1024 : BPS0;
if (BPS1 >= (uint16 *) (Memory.VRAM + 0x10000))
BPS1 -= 0x8000;
BPS2 = (PPU.BG[2].SCSize & 2) ? BPS1 + 1024 : BPS0;
if (BPS2 >= (uint16 *) (Memory.VRAM + 0x10000))
BPS2 -= 0x8000;
BPS3 = (PPU.BG[2].SCSize & 1) ? BPS2 + 1024 : BPS2;
if (BPS3 >= (uint16 *) (Memory.VRAM + 0x10000))
BPS3 -= 0x8000;
SC0 = (uint16 *) &Memory.VRAM[PPU.BG[bg].SCBase << 1];
SC1 = (PPU.BG[bg].SCSize & 1) ? SC0 + 1024 : SC0;
if (SC1 >= (uint16 *) (Memory.VRAM + 0x10000))
SC1 -= 0x8000;
SC2 = (PPU.BG[bg].SCSize & 2) ? SC1 + 1024 : SC0;
if (SC2 >= (uint16 *) (Memory.VRAM + 0x10000))
SC2 -= 0x8000;
SC3 = (PPU.BG[bg].SCSize & 1) ? SC2 + 1024 : SC2;
if (SC3 >= (uint16 *) (Memory.VRAM + 0x10000))
SC3 -= 0x8000;
int Lines;
int OffsetMask = (BG.TileSizeH == 16) ? 0x3ff : 0x1ff;
int OffsetShift = (BG.TileSizeV == 16) ? 4 : 3;
int Offset2Shift = (BG.OffsetSizeV == 16) ? 4 : 3;
int OffsetEnableMask = 0x2000 << bg;
int PixWidth = IPPU.DoubleWidthPixels ? 2 : 1;
bool8 HiresInterlace = IPPU.Interlace && IPPU.DoubleWidthPixels;
void (*DrawPix) (uint32, uint32, uint32, uint32, uint32, uint32);
int MosaicStart = ((uint32) GFX.StartY - PPU.MosaicStart) % PPU.Mosaic;
for (int clip = 0; clip < GFX.Clip[bg].Count; clip++)
{
GFX.ClipColors = !(GFX.Clip[bg].DrawMode[clip] & 1);
if (BG.EnableMath && (GFX.Clip[bg].DrawMode[clip] & 2))
DrawPix = GFX.DrawMosaicPixelMath;
else
DrawPix = GFX.DrawMosaicPixelNomath;
for (uint32 Y = GFX.StartY - MosaicStart; Y <= GFX.EndY; Y += PPU.Mosaic)
{
uint32 Y2 = HiresInterlace ? Y * 2 : Y;
uint32 VOff = LineData[Y + MosaicStart].BG[2].VOffset - 1;
uint32 HOff = LineData[Y + MosaicStart].BG[2].HOffset;
Lines = PPU.Mosaic - MosaicStart;
if (Y + MosaicStart + Lines > GFX.EndY)
Lines = GFX.EndY - Y - MosaicStart + 1;
uint32 HOffsetRow = VOff >> Offset2Shift;
uint32 VOffsetRow = (VOff + VOffOff) >> Offset2Shift;
uint16 *s, *s1, *s2;
if (HOffsetRow & 0x20)
{
s1 = BPS2;
s2 = BPS3;
}
else
{
s1 = BPS0;
s2 = BPS1;
}
s1 += (HOffsetRow & 0x1f) << 5;
s2 += (HOffsetRow & 0x1f) << 5;
s = ((VOffsetRow & 0x20) ? BPS2 : BPS0) + ((VOffsetRow & 0x1f) << 5);
int32 VOffsetOffset = s - s1;
uint32 Left = GFX.Clip[bg].Left[clip];
uint32 Right = GFX.Clip[bg].Right[clip];
uint32 Offset = Left * PixWidth + (Y + MosaicStart) * GFX.PPL;
uint32 HScroll = LineData[Y + MosaicStart].BG[bg].HOffset;
uint32 Width = Right - Left;
while (Left < Right)
{
uint32 VOffset, HOffset;
if (Left < (8 - (HScroll & 7)))
{
// SNES cannot do OPT for leftmost tile column
VOffset = LineData[Y + MosaicStart].BG[bg].VOffset;
HOffset = HScroll;
}
else
{
int HOffTile = (((Left + (HScroll & 7)) - 8) + (HOff & ~7)) >> 3;
if (BG.OffsetSizeH == 8)
{
if (HOffTile > 31)
s = s2 + (HOffTile & 0x1f);
else
s = s1 + HOffTile;
}
else
{
if (HOffTile > 63)
s = s2 + ((HOffTile >> 1) & 0x1f);
else
s = s1 + (HOffTile >> 1);
}
uint16 HCellOffset = READ_WORD(s);
uint16 VCellOffset;
if (VOffOff)
VCellOffset = READ_WORD(s + VOffsetOffset);
else
{
if (HCellOffset & 0x8000)
{
VCellOffset = HCellOffset;
HCellOffset = 0;
}
else
VCellOffset = 0;
}
if (VCellOffset & OffsetEnableMask)
VOffset = VCellOffset + 1;
else
VOffset = LineData[Y + MosaicStart].BG[bg].VOffset;
if (HCellOffset & OffsetEnableMask)
HOffset = (HCellOffset & ~7) | (HScroll & 7);
else
HOffset = HScroll;
}
if (HiresInterlace)
VOffset++;
uint32 t1, t2;
int VirtAlign = (((Y2 + VOffset) & 7) >> (HiresInterlace ? 1 : 0)) << 3;
int TilemapRow = (VOffset + Y2) >> OffsetShift;
BG.InterlaceLine = ((VOffset + Y2) & 1) << 3;
if ((VOffset + Y2) & 8)
{
t1 = 16;
t2 = 0;
}
else
{
t1 = 0;
t2 = 16;
}
uint16 *b1, *b2;
if (TilemapRow & 0x20)
{
b1 = SC2;
b2 = SC3;
}
else
{
b1 = SC0;
b2 = SC1;
}
b1 += (TilemapRow & 0x1f) << 5;
b2 += (TilemapRow & 0x1f) << 5;
uint32 HPos = (HOffset + Left - (Left % PPU.Mosaic)) & OffsetMask;
uint32 HTile = HPos >> 3;
uint16 *t;
if (BG.TileSizeH == 8)
{
if (HTile > 31)
t = b2 + (HTile & 0x1f);
else
t = b1 + HTile;
}
else
{
if (HTile > 63)
t = b2 + ((HTile >> 1) & 0x1f);
else
t = b1 + (HTile >> 1);
}
uint32 w = PPU.Mosaic - (Left % PPU.Mosaic);
if (w > Width)
w = Width;
Tile = READ_WORD(t);
GFX.Z1 = GFX.Z2 = (Tile & 0x2000) ? Zh : Zl;
if (BG.TileSizeV == 16)
Tile = TILE_PLUS(Tile, ((Tile & V_FLIP) ? t2 : t1));
if (BG.TileSizeH == 8)
DrawPix(Tile, Offset, VirtAlign, HPos & 7, w, Lines);
else
{
if (!(Tile & H_FLIP))
DrawPix(TILE_PLUS(Tile, (HTile & 1)), Offset, VirtAlign, HPos & 7, w, Lines);
else
if (!(Tile & V_FLIP))
DrawPix(TILE_PLUS(Tile, 1 - (HTile & 1)), Offset, VirtAlign, HPos & 7, w, Lines);
}
Left += w;
Offset += w * PixWidth;
Width -= w;
}
MosaicStart = 0;
}
}
}
static inline void DrawBackgroundMode7 (int bg, void (*DrawMath) (uint32, uint32, int), void (*DrawNomath) (uint32, uint32, int), int D)
{
for (int clip = 0; clip < GFX.Clip[bg].Count; clip++)
{
GFX.ClipColors = !(GFX.Clip[bg].DrawMode[clip] & 1);
if (BG.EnableMath && (GFX.Clip[bg].DrawMode[clip] & 2))
DrawMath(GFX.Clip[bg].Left[clip], GFX.Clip[bg].Right[clip], D);
else
DrawNomath(GFX.Clip[bg].Left[clip], GFX.Clip[bg].Right[clip], D);
}
}
static inline void DrawBackdrop (void)
{
uint32 Offset = GFX.StartY * GFX.PPL;
for (int clip = 0; clip < GFX.Clip[5].Count; clip++)
{
GFX.ClipColors = !(GFX.Clip[5].DrawMode[clip] & 1);
if (BG.EnableMath && (GFX.Clip[5].DrawMode[clip] & 2))
GFX.DrawBackdropMath(Offset, GFX.Clip[5].Left[clip], GFX.Clip[5].Right[clip]);
else
GFX.DrawBackdropNomath(Offset, GFX.Clip[5].Left[clip], GFX.Clip[5].Right[clip]);
}
}
void S9xReRefresh (void)
{
// Be careful when calling this function from the thread other than the emulation one...
// Here it's assumed no drawing occurs from the emulation thread when Settings.Paused is TRUE.
if (Settings.Paused)
S9xDeinitUpdate(IPPU.RenderedScreenWidth, IPPU.RenderedScreenHeight);
}
void S9xSetInfoString (const char *string)
{
if (Settings.InitialInfoStringTimeout > 0)
{
GFX.InfoString = string;
GFX.InfoStringTimeout = Settings.InitialInfoStringTimeout;
S9xReRefresh();
}
}
void S9xDisplayChar (uint16 *s, uint8 c)
{
const uint16 black = BUILD_PIXEL(0, 0, 0);
int line = ((c - 32) >> 4) * font_height;
int offset = ((c - 32) & 15) * font_width;
for (int h = 0; h < font_height; h++, line++, s += GFX.RealPPL - font_width)
{
for (int w = 0; w < font_width; w++, s++)
{
char p = font[line][offset + w];
if (p == '#')
*s = Settings.DisplayColor;
else
if (p == '.')
*s = black;
}
}
}
static void DisplayStringFromBottom (const char *string, int linesFromBottom, int pixelsFromLeft, bool allowWrap)
{
if (S9xCustomDisplayString)
{
S9xCustomDisplayString (string, linesFromBottom, pixelsFromLeft, allowWrap, S9X_NO_INFO);
return;
}
if (linesFromBottom <= 0)
linesFromBottom = 1;
uint16 *dst = GFX.Screen + (IPPU.RenderedScreenHeight - font_height * linesFromBottom) * GFX.RealPPL + pixelsFromLeft;
int len = strlen(string);
int max_chars = IPPU.RenderedScreenWidth / (font_width - 1);
int char_count = 0;
for (int i = 0 ; i < len ; i++, char_count++)
{
if (char_count >= max_chars || (uint8) string[i] < 32)
{
if (!allowWrap)
break;
dst += font_height * GFX.RealPPL - (font_width - 1) * max_chars;
if (dst >= GFX.Screen + IPPU.RenderedScreenHeight * GFX.RealPPL)
break;
char_count -= max_chars;
}
if ((uint8) string[i] < 32)
continue;
S9xDisplayChar(dst, string[i]);
dst += font_width - 1;
}
}
static void S9xDisplayStringType (const char *string, int linesFromBottom, int pixelsFromLeft, bool allowWrap, int type)
{
if (S9xCustomDisplayString)
{
S9xCustomDisplayString (string, linesFromBottom, pixelsFromLeft, allowWrap, type);
return;
}
S9xDisplayString (string, linesFromBottom, pixelsFromLeft, allowWrap);
}
static void DisplayTime (void)
{
char string[10];
time_t rawtime;
struct tm *timeinfo;
time (&rawtime);
timeinfo = localtime(&rawtime);
sprintf(string, "%02u:%02u", timeinfo->tm_hour, timeinfo->tm_min);
S9xDisplayString(string, 0, 0, false);
}
static void DisplayFrameRate (void)
{
char string[10];
static uint32 lastFrameCount = 0, calcFps = 0;
static time_t lastTime = time(NULL);
time_t currTime = time(NULL);
if (lastTime != currTime) {
if (lastFrameCount < IPPU.TotalEmulatedFrames) {
calcFps = (IPPU.TotalEmulatedFrames - lastFrameCount) / (uint32)(currTime - lastTime);
}
lastTime = currTime;
lastFrameCount = IPPU.TotalEmulatedFrames;
}
sprintf(string, "%u fps", calcFps);
S9xDisplayString(string, 2, IPPU.RenderedScreenWidth - (font_width - 1) * strlen(string) - 1, false);
#ifdef DEBUGGER
const int len = 8;
sprintf(string, "%02d/%02d %02d", (int) IPPU.DisplayedRenderedFrameCount, (int) Memory.ROMFramesPerSecond, (int) IPPU.FrameCount);
#else
const int len = 5;
sprintf(string, "%02d/%02d", (int) IPPU.DisplayedRenderedFrameCount, (int) Memory.ROMFramesPerSecond);
#endif
S9xDisplayString(string, 1, IPPU.RenderedScreenWidth - (font_width - 1) * len - 1, false);
}
static void DisplayPressedKeys (void)
{
static unsigned char KeyMap[] = { '0', '1', '2', 'R', 'L', 'X', 'A', 225, 224, 227, 226, 'S', 's', 'Y', 'B' };
static int KeyOrder[] = { 8, 10, 7, 9, 0, 6, 14, 13, 5, 1, 4, 3, 2, 11, 12 }; // < ^ > v A B Y X L R S s
enum controllers controller;
int line = Settings.DisplayMovieFrame && S9xMovieActive() ? 2 : 1;
int8 ids[4];
char string[255];
for (int port = 0; port < 2; port++)
{
S9xGetController(port, &controller, &ids[0], &ids[1], &ids[2], &ids[3]);
switch (controller)
{
case CTL_MOUSE:
{
uint8 buf[5];
if (!MovieGetMouse(port, buf))
break;
int16 x = READ_WORD(buf);
int16 y = READ_WORD(buf + 2);
uint8 buttons = buf[4];
sprintf(string, "#%d %d: (%03d,%03d) %c%c", port + 1, ids[0] + 1, x, y,
(buttons & 0x40) ? 'L' : ' ', (buttons & 0x80) ? 'R' : ' ');
S9xDisplayStringType(string, line++, 1, false, S9X_PRESSED_KEYS_INFO);
break;
}
case CTL_SUPERSCOPE:
{
uint8 buf[6];
if (!MovieGetScope(port, buf))
break;
int16 x = READ_WORD(buf);
int16 y = READ_WORD(buf + 2);
uint8 buttons = buf[4];
sprintf(string, "#%d %d: (%03d,%03d) %c%c%c%c", port + 1, ids[0] + 1, x, y,
(buttons & 0x80) ? 'F' : ' ', (buttons & 0x40) ? 'C' : ' ',
(buttons & 0x20) ? 'T' : ' ', (buttons & 0x10) ? 'P' : ' ');
S9xDisplayStringType(string, line++, 1, false, S9X_PRESSED_KEYS_INFO);
break;
}
case CTL_JUSTIFIER:
{
uint8 buf[11];
if (!MovieGetJustifier(port, buf))
break;
int16 x1 = READ_WORD(buf);
int16 x2 = READ_WORD(buf + 2);
int16 y1 = READ_WORD(buf + 4);
int16 y2 = READ_WORD(buf + 6);
uint8 buttons = buf[8];
bool8 offscreen1 = buf[9];
bool8 offscreen2 = buf[10];
sprintf(string, "#%d %d: (%03d,%03d) %c%c%c / (%03d,%03d) %c%c%c", port + 1, ids[0] + 1,
x1, y1, (buttons & 0x80) ? 'T' : ' ', (buttons & 0x20) ? 'S' : ' ', offscreen1 ? 'O' : ' ',
x2, y2, (buttons & 0x40) ? 'T' : ' ', (buttons & 0x10) ? 'S' : ' ', offscreen2 ? 'O' : ' ');
S9xDisplayStringType(string, line++, 1, false, S9X_PRESSED_KEYS_INFO);
break;
}
case CTL_JOYPAD:
{
sprintf(string, "#%d %d: ", port + 1, ids[0] + 1);
uint16 pad = MovieGetJoypad(ids[0]);
for (int i = 0; i < 15; i++)
{
int j = KeyOrder[i];
int mask = (1 << (j + 1));
string[6 + i]= (pad & mask) ? KeyMap[j] : ' ';
}
S9xDisplayStringType(string, line++, 1, false, S9X_PRESSED_KEYS_INFO);
break;
}
case CTL_MP5:
{
for (int n = 0; n < 4; n++)
{
if (ids[n] != -1)
{
sprintf(string, "#%d %d: ", port + 1, ids[n] + 1);
uint16 pad = MovieGetJoypad(ids[n]);
for (int i = 0; i < 15; i++)
{
int j = KeyOrder[i];
int mask = (1 << (j + 1));
string[6 + i]= (pad & mask) ? KeyMap[j] : ' ';
}
S9xDisplayStringType(string, line++, 1, false, S9X_PRESSED_KEYS_INFO);
}
}
break;
}
case CTL_MACSRIFLE:
{
/*
uint8 buf[6], *p = buf;
MovieGetScope(port, buf);
int16 x = READ_WORD(p);
int16 y = READ_WORD(p + 2);
uint8 buttons = buf[4];
sprintf(string, "#%d %d: (%03d,%03d) %c%c%c%c", port, ids[0], x, y,
(buttons & 0x80) ? 'F' : ' ', (buttons & 0x40) ? 'C' : ' ',
(buttons & 0x20) ? 'T' : ' ', (buttons & 0x10) ? 'P' : ' ');
S9xDisplayString(string, line++, 1, false);
*/
break;
}
case CTL_NONE:
{
// Display Nothing
break;
}
}
}
}
static void DisplayWatchedAddresses (void)
{
for (unsigned int i = 0; i < sizeof(watches) / sizeof(watches[0]); i++)
{
if (!watches[i].on)
break;
int32 displayNumber = 0;
char buf[32];
for (int r = 0; r < watches[i].size; r++)
displayNumber += (Cheat.CWatchRAM[(watches[i].address - 0x7E0000) + r]) << (8 * r);
if (watches[i].format == 1)
sprintf(buf, "%s,%du = %u", watches[i].desc, watches[i].size, (unsigned int) displayNumber);
else
if (watches[i].format == 3)
sprintf(buf, "%s,%dx = %X", watches[i].desc, watches[i].size, (unsigned int) displayNumber);
else // signed
{
if (watches[i].size == 1)
displayNumber = (int32) ((int8) displayNumber);
else
if (watches[i].size == 2)
displayNumber = (int32) ((int16) displayNumber);
else
if (watches[i].size == 3)
if (displayNumber >= 8388608)
displayNumber -= 16777216;
sprintf(buf, "%s,%ds = %d", watches[i].desc, watches[i].size, (int) displayNumber);
}
S9xDisplayString(buf, 6 + i, 1, false);
}
}
void S9xDisplayMessages (uint16 *screen, int ppl, int width, int height, int scale)
{
if (Settings.DisplayTime)
DisplayTime();
if (Settings.DisplayFrameRate)
DisplayFrameRate();
if (Settings.DisplayWatchedAddresses)
DisplayWatchedAddresses();
if (Settings.DisplayPressedKeys)
DisplayPressedKeys();
if (Settings.DisplayMovieFrame && S9xMovieActive())
S9xDisplayString(GFX.FrameDisplayString, 1, 1, false);
if (GFX.InfoString && *GFX.InfoString)
S9xDisplayString(GFX.InfoString, 5, 1, true);
}
static uint16 get_crosshair_color (uint8 color)
{
switch (color & 15)
{
case 0: return (BUILD_PIXEL( 0, 0, 0)); // transparent, shouldn't be used
case 1: return (BUILD_PIXEL( 0, 0, 0)); // Black
case 2: return (BUILD_PIXEL( 8, 8, 8)); // 25Grey
case 3: return (BUILD_PIXEL(16, 16, 16)); // 50Grey
case 4: return (BUILD_PIXEL(23, 23, 23)); // 75Grey
case 5: return (BUILD_PIXEL(31, 31, 31)); // White
case 6: return (BUILD_PIXEL(31, 0, 0)); // Red
case 7: return (BUILD_PIXEL(31, 16, 0)); // Orange
case 8: return (BUILD_PIXEL(31, 31, 0)); // Yellow
case 9: return (BUILD_PIXEL( 0, 31, 0)); // Green
case 10: return (BUILD_PIXEL( 0, 31, 31)); // Cyan
case 11: return (BUILD_PIXEL( 0, 23, 31)); // Sky
case 12: return (BUILD_PIXEL( 0, 0, 31)); // Blue
case 13: return (BUILD_PIXEL(23, 0, 31)); // Violet
case 14: return (BUILD_PIXEL(31, 0, 31)); // Magenta
case 15: return (BUILD_PIXEL(31, 0, 16)); // Purple
}
return (0);
}
void S9xDrawCrosshair (const char *crosshair, uint8 fgcolor, uint8 bgcolor, int16 x, int16 y)
{
if (!crosshair)
return;
int16 r, rx = 1, c, cx = 1, W = SNES_WIDTH, H = PPU.ScreenHeight;
uint16 fg, bg;
x -= 7;
y -= 7;
if (IPPU.DoubleWidthPixels) { cx = 2; x *= 2; W *= 2; }
if (IPPU.DoubleHeightPixels) { rx = 2; y *= 2; H *= 2; }
fg = get_crosshair_color(fgcolor);
bg = get_crosshair_color(bgcolor);
uint16 *s = GFX.Screen + y * (int32)GFX.RealPPL + x;
for (r = 0; r < 15 * rx; r++, s += GFX.RealPPL - 15 * cx)
{
if (y + r < 0)
{
s += 15 * cx;
continue;
}
if (y + r >= H)
break;
for (c = 0; c < 15 * cx; c++, s++)
{
if (x + c < 0 || s < GFX.Screen)
continue;
if (x + c >= W)
{
s += 15 * cx - c;
break;
}
uint8 p = crosshair[(r / rx) * 15 + (c / cx)];
if (p == '#' && fgcolor)
*s = (fgcolor & 0x10) ? COLOR_ADD::fn1_2(fg, *s) : fg;
else
if (p == '.' && bgcolor)
*s = (bgcolor & 0x10) ? COLOR_ADD::fn1_2(*s, bg) : bg;
}
}
}
Reference in New Issue View Git Blame Copy Permalink