mirror of
https://github.com/DerKoun/bsnes-hd.git
synced 2025-04-02 10:52:49 -04:00
75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
auto PPU::Line::renderMode7(PPU::IO::Background& self, uint8 source) -> void {
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//HD mode 7 support
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if(ppufast.hdScale() > 0 && (ppufast.hdMosaic() != 0
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|| !self.mosaicEnable || io.mosaic.size == 1)) {
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return renderMode7HD(self, source);
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}
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int Y = this->y;
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if(self.mosaicEnable) Y -= io.mosaic.size - io.mosaic.counter;
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int y = !io.mode7.vflip ? Y : 255 - Y;
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int a = (int16)io.mode7.a;
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int b = (int16)io.mode7.b;
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int c = (int16)io.mode7.c;
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int d = (int16)io.mode7.d;
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int hcenter = (int13)io.mode7.x;
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int vcenter = (int13)io.mode7.y;
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int hoffset = (int13)io.mode7.hoffset;
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int voffset = (int13)io.mode7.voffset;
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uint mosaicCounter = 1;
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uint mosaicPalette = 0;
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uint8 mosaicPriority = 0;
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uint16 mosaicColor = 0;
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auto clip = [](int n) -> int { return n & 0x2000 ? (n | ~1023) : (n & 1023); };
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int originX = (a * clip(hoffset - hcenter) & ~63) + (b * clip(voffset - vcenter) & ~63) + (b * y & ~63) + (hcenter << 8);
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int originY = (c * clip(hoffset - hcenter) & ~63) + (d * clip(voffset - vcenter) & ~63) + (d * y & ~63) + (vcenter << 8);
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bool windowAbove[1024];
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bool windowBelow[1024];
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renderWindow(self.window, self.window.aboveEnable, windowAbove,
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ppufast.widescreen(), ppufast.strwin());
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renderWindow(self.window, self.window.belowEnable, windowBelow,
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ppufast.widescreen(), ppufast.strwin());
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auto luma = ppu.lightTable[io.displayBrightness];
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for(int X : range(256)) {
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int x = !io.mode7.hflip ? X : 255 - X;
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int pixelX = originX + a * x >> 8;
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int pixelY = originY + c * x >> 8;
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int tileX = pixelX >> 3 & 127;
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int tileY = pixelY >> 3 & 127;
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bool outOfBounds = (pixelX | pixelY) & ~1023;
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uint15 tileAddress = tileY * 128 + tileX;
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uint15 paletteAddress = ((pixelY & 7) << 3) + (pixelX & 7);
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uint8 tile = io.mode7.repeat == 3 && outOfBounds ? 0 : ppu.vram[tileAddress] >> 0;
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uint8 palette = io.mode7.repeat == 2 && outOfBounds ? 0 : ppu.vram[tile << 6 | paletteAddress] >> 8;
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uint8 priority;
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if(source == Source::BG1) {
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priority = self.priority[0];
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} else if(source == Source::BG2) {
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priority = self.priority[palette >> 7];
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palette &= 0x7f;
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}
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if(--mosaicCounter == 0) {
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mosaicCounter = self.mosaicEnable ? io.mosaic.size : 1;
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mosaicPalette = palette;
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mosaicPriority = priority;
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if(io.col.directColor && source == Source::BG1) {
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mosaicColor = directColor(0, palette);
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} else {
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mosaicColor = cgram[palette];
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}
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}
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if(!mosaicPalette) continue;
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uint32 mctc = luma[mosaicColor];
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if(self.aboveEnable && !windowAbove[ppufast.winXad(X, false)]) plotAbove(X, source, mosaicPriority, mctc);
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if(self.belowEnable && !windowBelow[ppufast.winXad(X, true)]) plotBelow(X, source, mosaicPriority, mctc);
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}
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}
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