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GPU2D_Soft.cpp
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GPU2D_Soft.cpp
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/*
Copyright 2016-2022 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#include "GPU2D_Soft.h"
#include "GPU.h"
namespace GPU2D
{
SoftRenderer::SoftRenderer()
: Renderer2D()
{
// initialize mosaic table
for (int m = 0; m < 16; m++)
{
for (int x = 0; x < 256; x++)
{
int offset = x % (m+1);
MosaicTable[m][x] = offset;
}
}
}
u32 SoftRenderer::ColorBlend4(u32 val1, u32 val2, u32 eva, u32 evb)
{
u32 r = (((val1 & 0x00003F) * eva) + ((val2 & 0x00003F) * evb) + 0x000008) >> 4;
u32 g = ((((val1 & 0x003F00) * eva) + ((val2 & 0x003F00) * evb) + 0x000800) >> 4) & 0x007F00;
u32 b = ((((val1 & 0x3F0000) * eva) + ((val2 & 0x3F0000) * evb) + 0x080000) >> 4) & 0x7F0000;
if (r > 0x00003F) r = 0x00003F;
if (g > 0x003F00) g = 0x003F00;
if (b > 0x3F0000) b = 0x3F0000;
return r | g | b | 0xFF000000;
}
u32 SoftRenderer::ColorBlend5(u32 val1, u32 val2)
{
u32 eva = ((val1 >> 24) & 0x1F) + 1;
u32 evb = 32 - eva;
if (eva == 32) return val1;
u32 r = (((val1 & 0x00003F) * eva) + ((val2 & 0x00003F) * evb) + 0x000010) >> 5;
u32 g = ((((val1 & 0x003F00) * eva) + ((val2 & 0x003F00) * evb) + 0x001000) >> 5) & 0x007F00;
u32 b = ((((val1 & 0x3F0000) * eva) + ((val2 & 0x3F0000) * evb) + 0x100000) >> 5) & 0x7F0000;
if (r > 0x00003F) r = 0x00003F;
if (g > 0x003F00) g = 0x003F00;
if (b > 0x3F0000) b = 0x3F0000;
return r | g | b | 0xFF000000;
}
u32 SoftRenderer::ColorBrightnessUp(u32 val, u32 factor, u32 bias)
{
u32 rb = val & 0x3F003F;
u32 g = val & 0x003F00;
rb += (((((0x3F003F - rb) * factor) + (bias*0x010001)) >> 4) & 0x3F003F);
g += (((((0x003F00 - g ) * factor) + (bias*0x000100)) >> 4) & 0x003F00);
return rb | g | 0xFF000000;
}
u32 SoftRenderer::ColorBrightnessDown(u32 val, u32 factor, u32 bias)
{
u32 rb = val & 0x3F003F;
u32 g = val & 0x003F00;
rb -= ((((rb * factor) + (bias*0x010001)) >> 4) & 0x3F003F);
g -= ((((g * factor) + (bias*0x000100)) >> 4) & 0x003F00);
return rb | g | 0xFF000000;
}
u32 SoftRenderer::ColorComposite(int i, u32 val1, u32 val2)
{
u32 coloreffect = 0;
u32 eva, evb;
u32 flag1 = val1 >> 24;
u32 flag2 = val2 >> 24;
u32 blendCnt = CurUnit->BlendCnt;
u32 target2;
if (flag2 & 0x80) target2 = 0x1000;
else if (flag2 & 0x40) target2 = 0x0100;
else target2 = flag2 << 8;
if ((flag1 & 0x80) && (blendCnt & target2))
{
// sprite blending
coloreffect = 1;
if (flag1 & 0x40)
{
eva = flag1 & 0x1F;
evb = 16 - eva;
}
else
{
eva = CurUnit->EVA;
evb = CurUnit->EVB;
}
}
else if ((flag1 & 0x40) && (blendCnt & target2))
{
// 3D layer blending
coloreffect = 4;
}
else
{
if (flag1 & 0x80) flag1 = 0x10;
else if (flag1 & 0x40) flag1 = 0x01;
if ((blendCnt & flag1) && (WindowMask[i] & 0x20))
{
coloreffect = (blendCnt >> 6) & 0x3;
if (coloreffect == 1)
{
if (blendCnt & target2)
{
eva = CurUnit->EVA;
evb = CurUnit->EVB;
}
else
coloreffect = 0;
}
}
}
switch (coloreffect)
{
case 0: return val1;
case 1: return ColorBlend4(val1, val2, eva, evb);
case 2: return ColorBrightnessUp(val1, CurUnit->EVY, 0x8);
case 3: return ColorBrightnessDown(val1, CurUnit->EVY, 0x7);
case 4: return ColorBlend5(val1, val2);
}
return val1;
}
void SoftRenderer::DrawScanline(u32 line, Unit* unit)
{
CurUnit = unit;
int stride = GPU3D::CurrentRenderer->Accelerated ? (256*3 + 1) : 256;
u32* dst = &Framebuffer[CurUnit->Num][stride * line];
int n3dline = line;
line = GPU::VCount;
if (CurUnit->Num == 0)
{
auto bgDirty = GPU::VRAMDirty_ABG.DeriveState(GPU::VRAMMap_ABG);
GPU::MakeVRAMFlat_ABGCoherent(bgDirty);
auto bgExtPalDirty = GPU::VRAMDirty_ABGExtPal.DeriveState(GPU::VRAMMap_ABGExtPal);
GPU::MakeVRAMFlat_ABGExtPalCoherent(bgExtPalDirty);
auto objExtPalDirty = GPU::VRAMDirty_AOBJExtPal.DeriveState(&GPU::VRAMMap_AOBJExtPal);
GPU::MakeVRAMFlat_AOBJExtPalCoherent(objExtPalDirty);
}
else
{
auto bgDirty = GPU::VRAMDirty_BBG.DeriveState(GPU::VRAMMap_BBG);
GPU::MakeVRAMFlat_BBGCoherent(bgDirty);
auto bgExtPalDirty = GPU::VRAMDirty_BBGExtPal.DeriveState(GPU::VRAMMap_BBGExtPal);
GPU::MakeVRAMFlat_BBGExtPalCoherent(bgExtPalDirty);
auto objExtPalDirty = GPU::VRAMDirty_BOBJExtPal.DeriveState(&GPU::VRAMMap_BOBJExtPal);
GPU::MakeVRAMFlat_BOBJExtPalCoherent(objExtPalDirty);
}
bool forceblank = false;
// scanlines that end up outside of the GPU drawing range
// (as a result of writing to VCount) are filled white
if (line > 192) forceblank = true;
// GPU B can be completely disabled by POWCNT1
// oddly that's not the case for GPU A
if (CurUnit->Num && !CurUnit->Enabled) forceblank = true;
if (line == 0 && CurUnit->CaptureCnt & (1 << 31) && !forceblank)
CurUnit->CaptureLatch = true;
if (CurUnit->Num == 0)
{
if (!GPU3D::CurrentRenderer->Accelerated)
_3DLine = GPU3D::GetLine(n3dline);
else if (CurUnit->CaptureLatch && (((CurUnit->CaptureCnt >> 29) & 0x3) != 1))
{
_3DLine = GPU3D::GetLine(n3dline);
//GPU3D::GLRenderer::PrepareCaptureFrame();
}
}
if (forceblank)
{
for (int i = 0; i < 256; i++)
dst[i] = 0xFFFFFFFF;
if (GPU3D::CurrentRenderer->Accelerated)
{
dst[256*3] = 0;
}
return;
}
u32 dispmode = CurUnit->DispCnt >> 16;
dispmode &= (CurUnit->Num ? 0x1 : 0x3);
// always render regular graphics
DrawScanline_BGOBJ(line);
CurUnit->UpdateMosaicCounters(line);
switch (dispmode)
{
case 0: // screen off
{
for (int i = 0; i < 256; i++)
dst[i] = 0x003F3F3F;
}
break;
case 1: // regular display
{
int i = 0;
for (; i < (stride & ~1); i+=2)
*(u64*)&dst[i] = *(u64*)&BGOBJLine[i];
}
break;
case 2: // VRAM display
{
u32 vrambank = (CurUnit->DispCnt >> 18) & 0x3;
if (GPU::VRAMMap_LCDC & (1<<vrambank))
{
u16* vram = (u16*)GPU::VRAM[vrambank];
vram = &vram[line * 256];
for (int i = 0; i < 256; i++)
{
u16 color = vram[i];
u8 r = (color & 0x001F) << 1;
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
dst[i] = r | (g << 8) | (b << 16);
}
}
else
{
for (int i = 0; i < 256; i++)
{
dst[i] = 0;
}
}
}
break;
case 3: // FIFO display
{
for (int i = 0; i < 256; i++)
{
u16 color = CurUnit->DispFIFOBuffer[i];
u8 r = (color & 0x001F) << 1;
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
dst[i] = r | (g << 8) | (b << 16);
}
}
break;
}
// capture
if ((CurUnit->Num == 0) && CurUnit->CaptureLatch)
{
u32 capwidth, capheight;
switch ((CurUnit->CaptureCnt >> 20) & 0x3)
{
case 0: capwidth = 128; capheight = 128; break;
case 1: capwidth = 256; capheight = 64; break;
case 2: capwidth = 256; capheight = 128; break;
case 3: capwidth = 256; capheight = 192; break;
}
if (line < capheight)
DoCapture(line, capwidth);
}
u32 masterBrightness = CurUnit->MasterBrightness;
if (GPU3D::CurrentRenderer->Accelerated)
{
dst[256*3] = masterBrightness | (CurUnit->DispCnt & 0x30000);
return;
}
// master brightness
if (dispmode != 0)
{
if ((masterBrightness >> 14) == 1)
{
// up
u32 factor = masterBrightness & 0x1F;
if (factor > 16) factor = 16;
for (int i = 0; i < 256; i++)
{
dst[i] = ColorBrightnessUp(dst[i], factor, 0x0);
}
}
else if ((masterBrightness >> 14) == 2)
{
// down
u32 factor = masterBrightness & 0x1F;
if (factor > 16) factor = 16;
for (int i = 0; i < 256; i++)
{
dst[i] = ColorBrightnessDown(dst[i], factor, 0xF);
}
}
}
// convert to 32-bit BGRA
// note: 32-bit RGBA would be more straightforward, but
// BGRA seems to be more compatible (Direct2D soft, cairo...)
for (int i = 0; i < 256; i+=2)
{
u64 c = *(u64*)&dst[i];
u64 r = (c << 18) & 0xFC000000FC0000;
u64 g = (c << 2) & 0xFC000000FC00;
u64 b = (c >> 14) & 0xFC000000FC;
c = r | g | b;
*(u64*)&dst[i] = c | ((c & 0x00C0C0C000C0C0C0) >> 6) | 0xFF000000FF000000;
}
}
void SoftRenderer::VBlankEnd(Unit* unitA, Unit* unitB)
{
#ifdef OGLRENDERER_ENABLED
if (GPU3D::CurrentRenderer->Accelerated)
{
if ((unitA->CaptureCnt & (1<<31)) && (((unitA->CaptureCnt >> 29) & 0x3) != 1))
{
reinterpret_cast<GPU3D::GLRenderer*>(GPU3D::CurrentRenderer.get())->PrepareCaptureFrame();
}
}
#endif
}
void SoftRenderer::DoCapture(u32 line, u32 width)
{
u32 captureCnt = CurUnit->CaptureCnt;
u32 dstvram = (captureCnt >> 16) & 0x3;
// TODO: confirm this
// it should work like VRAM display mode, which requires VRAM to be mapped to LCDC
if (!(GPU::VRAMMap_LCDC & (1<<dstvram)))
return;
u16* dst = (u16*)GPU::VRAM[dstvram];
u32 dstaddr = (((captureCnt >> 18) & 0x3) << 14) + (line * width);
// TODO: handle 3D in GPU3D::CurrentRenderer->Accelerated mode!!
u32* srcA;
if (captureCnt & (1<<24))
{
srcA = _3DLine;
}
else
{
srcA = BGOBJLine;
if (GPU3D::CurrentRenderer->Accelerated)
{
// in GPU3D::CurrentRenderer->Accelerated mode, compositing is normally done on the GPU
// but when doing display capture, we do need the composited output
// so we do it here
for (int i = 0; i < 256; i++)
{
u32 val1 = BGOBJLine[i];
u32 val2 = BGOBJLine[256+i];
u32 val3 = BGOBJLine[512+i];
u32 compmode = (val3 >> 24) & 0xF;
if (compmode == 4)
{
// 3D on top, blending
u32 _3dval = _3DLine[i];
if ((_3dval >> 24) > 0)
val1 = ColorBlend5(_3dval, val1);
else
val1 = val2;
}
else if (compmode == 1)
{
// 3D on bottom, blending
u32 _3dval = _3DLine[i];
if ((_3dval >> 24) > 0)
{
u32 eva = (val3 >> 8) & 0x1F;
u32 evb = (val3 >> 16) & 0x1F;
val1 = ColorBlend4(val1, _3dval, eva, evb);
}
else
val1 = val2;
}
else if (compmode <= 3)
{
// 3D on top, normal/fade
u32 _3dval = _3DLine[i];
if ((_3dval >> 24) > 0)
{
u32 evy = (val3 >> 8) & 0x1F;
val1 = _3dval;
if (compmode == 2) val1 = ColorBrightnessUp(val1, evy, 0x8);
else if (compmode == 3) val1 = ColorBrightnessDown(val1, evy, 0x7);
}
else
val1 = val2;
}
BGOBJLine[i] = val1;
}
}
}
u16* srcB = NULL;
u32 srcBaddr = line * 256;
if (captureCnt & (1<<25))
{
srcB = &CurUnit->DispFIFOBuffer[0];
srcBaddr = 0;
}
else
{
u32 srcvram = (CurUnit->DispCnt >> 18) & 0x3;
if (GPU::VRAMMap_LCDC & (1<<srcvram))
srcB = (u16*)GPU::VRAM[srcvram];
if (((CurUnit->DispCnt >> 16) & 0x3) != 2)
srcBaddr += ((captureCnt >> 26) & 0x3) << 14;
}
dstaddr &= 0xFFFF;
srcBaddr &= 0xFFFF;
static_assert(GPU::VRAMDirtyGranularity == 512, "");
GPU::VRAMDirty[dstvram][(dstaddr * 2) / GPU::VRAMDirtyGranularity] = true;
switch ((captureCnt >> 29) & 0x3)
{
case 0: // source A
{
for (u32 i = 0; i < width; i++)
{
u32 val = srcA[i];
// TODO: check what happens when alpha=0
u32 r = (val >> 1) & 0x1F;
u32 g = (val >> 9) & 0x1F;
u32 b = (val >> 17) & 0x1F;
u32 a = ((val >> 24) != 0) ? 0x8000 : 0;
dst[dstaddr] = r | (g << 5) | (b << 10) | a;
dstaddr = (dstaddr + 1) & 0xFFFF;
}
}
break;
case 1: // source B
{
if (srcB)
{
for (u32 i = 0; i < width; i++)
{
dst[dstaddr] = srcB[srcBaddr];
srcBaddr = (srcBaddr + 1) & 0xFFFF;
dstaddr = (dstaddr + 1) & 0xFFFF;
}
}
else
{
for (u32 i = 0; i < width; i++)
{
dst[dstaddr] = 0;
dstaddr = (dstaddr + 1) & 0xFFFF;
}
}
}
break;
case 2: // sources A+B
case 3:
{
u32 eva = captureCnt & 0x1F;
u32 evb = (captureCnt >> 8) & 0x1F;
// checkme
if (eva > 16) eva = 16;
if (evb > 16) evb = 16;
if (srcB)
{
for (u32 i = 0; i < width; i++)
{
u32 val = srcA[i];
// TODO: check what happens when alpha=0
u32 rA = (val >> 1) & 0x1F;
u32 gA = (val >> 9) & 0x1F;
u32 bA = (val >> 17) & 0x1F;
u32 aA = ((val >> 24) != 0) ? 1 : 0;
val = srcB[srcBaddr];
u32 rB = val & 0x1F;
u32 gB = (val >> 5) & 0x1F;
u32 bB = (val >> 10) & 0x1F;
u32 aB = val >> 15;
u32 rD = ((rA * aA * eva) + (rB * aB * evb) + 8) >> 4;
u32 gD = ((gA * aA * eva) + (gB * aB * evb) + 8) >> 4;
u32 bD = ((bA * aA * eva) + (bB * aB * evb) + 8) >> 4;
u32 aD = (eva>0 ? aA : 0) | (evb>0 ? aB : 0);
if (rD > 0x1F) rD = 0x1F;
if (gD > 0x1F) gD = 0x1F;
if (bD > 0x1F) bD = 0x1F;
dst[dstaddr] = rD | (gD << 5) | (bD << 10) | (aD << 15);
srcBaddr = (srcBaddr + 1) & 0xFFFF;
dstaddr = (dstaddr + 1) & 0xFFFF;
}
}
else
{
for (u32 i = 0; i < width; i++)
{
u32 val = srcA[i];
// TODO: check what happens when alpha=0
u32 rA = (val >> 1) & 0x1F;
u32 gA = (val >> 9) & 0x1F;
u32 bA = (val >> 17) & 0x1F;
u32 aA = ((val >> 24) != 0) ? 1 : 0;
u32 rD = ((rA * aA * eva) + 8) >> 4;
u32 gD = ((gA * aA * eva) + 8) >> 4;
u32 bD = ((bA * aA * eva) + 8) >> 4;
u32 aD = (eva>0 ? aA : 0);
dst[dstaddr] = rD | (gD << 5) | (bD << 10) | (aD << 15);
dstaddr = (dstaddr + 1) & 0xFFFF;
}
}
}
break;
}
}
#define DoDrawBG(type, line, num) \
do \
{ \
if ((bgCnt[num] & 0x0040) && (CurUnit->BGMosaicSize[0] > 0)) \
{ \
if (GPU3D::CurrentRenderer->Accelerated) DrawBG_##type<true, DrawPixel_Accel>(line, num); \
else DrawBG_##type<true, DrawPixel_Normal>(line, num); \
} \
else \
{ \
if (GPU3D::CurrentRenderer->Accelerated) DrawBG_##type<false, DrawPixel_Accel>(line, num); \
else DrawBG_##type<false, DrawPixel_Normal>(line, num); \
} \
} while (false)
#define DoDrawBG_Large(line) \
do \
{ \
if ((bgCnt[2] & 0x0040) && (CurUnit->BGMosaicSize[0] > 0)) \
{ \
if (GPU3D::CurrentRenderer->Accelerated) DrawBG_Large<true, DrawPixel_Accel>(line); \
else DrawBG_Large<true, DrawPixel_Normal>(line); \
} \
else \
{ \
if (GPU3D::CurrentRenderer->Accelerated) DrawBG_Large<false, DrawPixel_Accel>(line); \
else DrawBG_Large<false, DrawPixel_Normal>(line); \
} \
} while (false)
#define DoInterleaveSprites(prio) \
if (GPU3D::CurrentRenderer->Accelerated) InterleaveSprites<DrawPixel_Accel>(prio); else InterleaveSprites<DrawPixel_Normal>(prio);
template<u32 bgmode>
void SoftRenderer::DrawScanlineBGMode(u32 line)
{
u32 dispCnt = CurUnit->DispCnt;
u16* bgCnt = CurUnit->BGCnt;
for (int i = 3; i >= 0; i--)
{
if ((bgCnt[3] & 0x3) == i)
{
if (dispCnt & 0x0800)
{
if (bgmode >= 3)
DoDrawBG(Extended, line, 3);
else if (bgmode >= 1)
DoDrawBG(Affine, line, 3);
else
DoDrawBG(Text, line, 3);
}
}
if ((bgCnt[2] & 0x3) == i)
{
if (dispCnt & 0x0400)
{
if (bgmode == 5)
DoDrawBG(Extended, line, 2);
else if (bgmode == 4 || bgmode == 2)
DoDrawBG(Affine, line, 2);
else
DoDrawBG(Text, line, 2);
}
}
if ((bgCnt[1] & 0x3) == i)
{
if (dispCnt & 0x0200)
{
DoDrawBG(Text, line, 1);
}
}
if ((bgCnt[0] & 0x3) == i)
{
if (dispCnt & 0x0100)
{
if (!CurUnit->Num && (dispCnt & 0x8))
DrawBG_3D();
else
DoDrawBG(Text, line, 0);
}
}
if ((dispCnt & 0x1000) && NumSprites[CurUnit->Num])
{
DoInterleaveSprites(0x40000 | (i<<16));
}
}
}
void SoftRenderer::DrawScanlineBGMode6(u32 line)
{
u32 dispCnt = CurUnit->DispCnt;
u16* bgCnt = CurUnit->BGCnt;
for (int i = 3; i >= 0; i--)
{
if ((bgCnt[2] & 0x3) == i)
{
if (dispCnt & 0x0400)
{
DoDrawBG_Large(line);
}
}
if ((bgCnt[0] & 0x3) == i)
{
if (dispCnt & 0x0100)
{
if ((!CurUnit->Num) && (dispCnt & 0x8))
DrawBG_3D();
}
}
if ((dispCnt & 0x1000) && NumSprites[CurUnit->Num])
{
DoInterleaveSprites(0x40000 | (i<<16))
}
}
}
void SoftRenderer::DrawScanlineBGMode7(u32 line)
{
u32 dispCnt = CurUnit->DispCnt;
u16* bgCnt = CurUnit->BGCnt;
// mode 7 only has text-mode BG0 and BG1
for (int i = 3; i >= 0; i--)
{
if ((bgCnt[1] & 0x3) == i)
{
if (dispCnt & 0x0200)
{
DoDrawBG(Text, line, 1);
}
}
if ((bgCnt[0] & 0x3) == i)
{
if (dispCnt & 0x0100)
{
if (!CurUnit->Num && (dispCnt & 0x8))
DrawBG_3D();
else
DoDrawBG(Text, line, 0);
}
}
if ((dispCnt & 0x1000) && NumSprites[CurUnit->Num])
{
DoInterleaveSprites(0x40000 | (i<<16))
}
}
}
void SoftRenderer::DrawScanline_BGOBJ(u32 line)
{
// forced blank disables BG/OBJ compositing
if (CurUnit->DispCnt & (1<<7))
{
for (int i = 0; i < 256; i++)
BGOBJLine[i] = 0xFF3F3F3F;
return;
}
u64 backdrop;
if (CurUnit->Num) backdrop = *(u16*)&GPU::Palette[0x400];
else backdrop = *(u16*)&GPU::Palette[0];
{
u8 r = (backdrop & 0x001F) << 1;
u8 g = (backdrop & 0x03E0) >> 4;
u8 b = (backdrop & 0x7C00) >> 9;
backdrop = r | (g << 8) | (b << 16) | 0x20000000;
backdrop |= (backdrop << 32);
for (int i = 0; i < 256; i+=2)
*(u64*)&BGOBJLine[i] = backdrop;
}
if (CurUnit->DispCnt & 0xE000)
CurUnit->CalculateWindowMask(line, WindowMask, OBJWindow[CurUnit->Num]);
else
memset(WindowMask, 0xFF, 256);
ApplySpriteMosaicX();
CurBGXMosaicTable = MosaicTable[CurUnit->BGMosaicSize[0]];
switch (CurUnit->DispCnt & 0x7)
{
case 0: DrawScanlineBGMode<0>(line); break;
case 1: DrawScanlineBGMode<1>(line); break;
case 2: DrawScanlineBGMode<2>(line); break;
case 3: DrawScanlineBGMode<3>(line); break;
case 4: DrawScanlineBGMode<4>(line); break;
case 5: DrawScanlineBGMode<5>(line); break;
case 6: DrawScanlineBGMode6(line); break;
case 7: DrawScanlineBGMode7(line); break;
}
// color special effects
// can likely be optimized
if (!GPU3D::CurrentRenderer->Accelerated)
{
for (int i = 0; i < 256; i++)
{
u32 val1 = BGOBJLine[i];
u32 val2 = BGOBJLine[256+i];
BGOBJLine[i] = ColorComposite(i, val1, val2);
}
}
else
{
if (CurUnit->Num == 0)
{
for (int i = 0; i < 256; i++)
{
u32 val1 = BGOBJLine[i];
u32 val2 = BGOBJLine[256+i];
u32 val3 = BGOBJLine[512+i];
u32 flag1 = val1 >> 24;
u32 flag2 = val2 >> 24;
u32 bldcnteffect = (CurUnit->BlendCnt >> 6) & 0x3;
u32 target1;
if (flag1 & 0x80) target1 = 0x0010;
else if (flag1 & 0x40) target1 = 0x0001;
else target1 = flag1;
u32 target2;
if (flag2 & 0x80) target2 = 0x1000;
else if (flag2 & 0x40) target2 = 0x0100;
else target2 = flag2 << 8;
if (((flag1 & 0xC0) == 0x40) && (CurUnit->BlendCnt & target2))
{
// 3D on top, blending
BGOBJLine[i] = val2;
BGOBJLine[256+i] = ColorComposite(i, val2, val3);
BGOBJLine[512+i] = 0x04000000;
}
else if ((flag1 & 0xC0) == 0x40)
{
// 3D on top, normal/fade
if (bldcnteffect == 1) bldcnteffect = 0;
if (!(CurUnit->BlendCnt & 0x0001)) bldcnteffect = 0;
if (!(WindowMask[i] & 0x20)) bldcnteffect = 0;
BGOBJLine[i] = val2;
BGOBJLine[256+i] = ColorComposite(i, val2, val3);
BGOBJLine[512+i] = (bldcnteffect << 24) | (CurUnit->EVY << 8);
}
else if (((flag2 & 0xC0) == 0x40) && ((CurUnit->BlendCnt & 0x01C0) == 0x0140))
{
// 3D on bottom, blending
u32 eva, evb;
if ((flag1 & 0xC0) == 0xC0)
{
eva = flag1 & 0x1F;
evb = 16 - eva;
}
else if (((CurUnit->BlendCnt & target1) && (WindowMask[i] & 0x20)) ||
((flag1 & 0xC0) == 0x80))
{
eva = CurUnit->EVA;
evb = CurUnit->EVB;
}
else
bldcnteffect = 7;
BGOBJLine[i] = val1;
BGOBJLine[256+i] = ColorComposite(i, val1, val3);
BGOBJLine[512+i] = (bldcnteffect << 24) | (CurUnit->EVB << 16) | (CurUnit->EVA << 8);
}
else
{
// no potential 3D pixel involved
BGOBJLine[i] = ColorComposite(i, val1, val2);
BGOBJLine[256+i] = 0;
BGOBJLine[512+i] = 0x07000000;
}
}
}
else
{
for (int i = 0; i < 256; i++)
{
u32 val1 = BGOBJLine[i];
u32 val2 = BGOBJLine[256+i];
BGOBJLine[i] = ColorComposite(i, val1, val2);
BGOBJLine[256+i] = 0;
BGOBJLine[512+i] = 0x07000000;
}
}
}
if (CurUnit->BGMosaicY >= CurUnit->BGMosaicYMax)
{
CurUnit->BGMosaicY = 0;
CurUnit->BGMosaicYMax = CurUnit->BGMosaicSize[1];
}
else
CurUnit->BGMosaicY++;
/*if (OBJMosaicY >= OBJMosaicYMax)
{
OBJMosaicY = 0;
OBJMosaicYMax = OBJMosaicSize[1];
}
else
OBJMosaicY++;*/
}
void SoftRenderer::DrawPixel_Normal(u32* dst, u16 color, u32 flag)
{
u8 r = (color & 0x001F) << 1;
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
//g |= ((color & 0x8000) >> 15);
*(dst+256) = *dst;
*dst = r | (g << 8) | (b << 16) | flag;
}
void SoftRenderer::DrawPixel_Accel(u32* dst, u16 color, u32 flag)
{
u8 r = (color & 0x001F) << 1;
u8 g = (color & 0x03E0) >> 4;
u8 b = (color & 0x7C00) >> 9;
*(dst+512) = *(dst+256);
*(dst+256) = *dst;
*dst = r | (g << 8) | (b << 16) | flag;
}
void SoftRenderer::DrawBG_3D()
{
int i = 0;
if (GPU3D::CurrentRenderer->Accelerated)
{
for (i = 0; i < 256; i++)
{
if (!(WindowMask[i] & 0x01)) continue;
BGOBJLine[i+512] = BGOBJLine[i+256];
BGOBJLine[i+256] = BGOBJLine[i];
BGOBJLine[i] = 0x40000000; // 3D-layer placeholder
}
}
else
{
for (i = 0; i < 256; i++)
{
u32 c = _3DLine[i];
if ((c >> 24) == 0) continue;
if (!(WindowMask[i] & 0x01)) continue;
BGOBJLine[i+256] = BGOBJLine[i];
BGOBJLine[i] = c | 0x40000000;
}
}
}
template<bool mosaic, SoftRenderer::DrawPixel drawPixel>
void SoftRenderer::DrawBG_Text(u32 line, u32 bgnum)
{
u16 bgcnt = CurUnit->BGCnt[bgnum];
u32 tilesetaddr, tilemapaddr;
u16* pal;
u32 extpal, extpalslot;
u16 xoff = CurUnit->BGXPos[bgnum];
u16 yoff = CurUnit->BGYPos[bgnum] + line;
if (bgcnt & 0x0040)
{
// vertical mosaic
yoff -= CurUnit->BGMosaicY;
}
u32 widexmask = (bgcnt & 0x4000) ? 0x100 : 0;
extpal = (CurUnit->DispCnt & 0x40000000);
if (extpal) extpalslot = ((bgnum<2) && (bgcnt&0x2000)) ? (2+bgnum) : bgnum;
u8* bgvram;
u32 bgvrammask;
CurUnit->GetBGVRAM(bgvram, bgvrammask);
if (CurUnit->Num)
{
tilesetaddr = ((bgcnt & 0x003C) << 12);
tilemapaddr = ((bgcnt & 0x1F00) << 3);
pal = (u16*)&GPU::Palette[0x400];