mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-10-04 07:11:35 +02:00
78d49d3873
byuu says: Changelog: - int_t<bits> replaced with Integer<bits> - uint_t<bits> replaced with Natural<bits> - fixed "Synchronize Audio" menu option that broke recently - all of sfc/performance ported to "auto function() -> return;" syntax With this WIP, all of higan is finally ported over to the new function declaration syntax. Thank the gods. There's still going to be periodic disruption for diffs from porting over signed->int, unsigned->uint, and whatever we come up with for the new Natural<> and Integer<> classes. But the worst of it's behind us now.
120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
PPU::Cache::Cache(PPU& self) : self(self) {
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tiledata[0] = new uint8[262144]();
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tiledata[1] = new uint8[131072]();
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tiledata[2] = new uint8[ 65536]();
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tilevalid[0] = new uint8[ 4096]();
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tilevalid[1] = new uint8[ 2048]();
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tilevalid[2] = new uint8[ 1024]();
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}
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auto PPU::Cache::tile_2bpp(uint tile) -> uint8* {
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if(tilevalid[0][tile] == 0) {
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tilevalid[0][tile] = 1;
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uint8* output = (uint8*)tiledata[0] + (tile << 6);
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uint offset = tile << 4;
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uint y = 8;
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uint color, d0, d1;
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while(y--) {
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d0 = ppu.vram[offset + 0];
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d1 = ppu.vram[offset + 1];
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#define render_line(mask) \
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color = !!(d0 & mask) << 0; \
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color |= !!(d1 & mask) << 1; \
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*output++ = color
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render_line(0x80);
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render_line(0x40);
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render_line(0x20);
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render_line(0x10);
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render_line(0x08);
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render_line(0x04);
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render_line(0x02);
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render_line(0x01);
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#undef render_line
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offset += 2;
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}
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}
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return tiledata[0] + (tile << 6);
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}
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auto PPU::Cache::tile_4bpp(uint tile) -> uint8* {
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if(tilevalid[1][tile] == 0) {
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tilevalid[1][tile] = 1;
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uint8* output = (uint8*)tiledata[1] + (tile << 6);
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uint offset = tile << 5;
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uint y = 8;
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uint color, d0, d1, d2, d3;
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while(y--) {
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d0 = ppu.vram[offset + 0];
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d1 = ppu.vram[offset + 1];
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d2 = ppu.vram[offset + 16];
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d3 = ppu.vram[offset + 17];
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#define render_line(mask) \
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color = !!(d0 & mask) << 0; \
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color |= !!(d1 & mask) << 1; \
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color |= !!(d2 & mask) << 2; \
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color |= !!(d3 & mask) << 3; \
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*output++ = color
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render_line(0x80);
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render_line(0x40);
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render_line(0x20);
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render_line(0x10);
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render_line(0x08);
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render_line(0x04);
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render_line(0x02);
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render_line(0x01);
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#undef render_line
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offset += 2;
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}
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}
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return tiledata[1] + (tile << 6);
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}
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auto PPU::Cache::tile_8bpp(uint tile) -> uint8* {
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if(tilevalid[2][tile] == 0) {
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tilevalid[2][tile] = 1;
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uint8* output = (uint8*)tiledata[2] + (tile << 6);
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uint offset = tile << 6;
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uint y = 8;
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uint color, d0, d1, d2, d3, d4, d5, d6, d7;
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while(y--) {
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d0 = ppu.vram[offset + 0];
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d1 = ppu.vram[offset + 1];
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d2 = ppu.vram[offset + 16];
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d3 = ppu.vram[offset + 17];
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d4 = ppu.vram[offset + 32];
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d5 = ppu.vram[offset + 33];
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d6 = ppu.vram[offset + 48];
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d7 = ppu.vram[offset + 49];
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#define render_line(mask) \
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color = !!(d0 & mask) << 0; \
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color |= !!(d1 & mask) << 1; \
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color |= !!(d2 & mask) << 2; \
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color |= !!(d3 & mask) << 3; \
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color |= !!(d4 & mask) << 4; \
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color |= !!(d5 & mask) << 5; \
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color |= !!(d6 & mask) << 6; \
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color |= !!(d7 & mask) << 7; \
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*output++ = color
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render_line(0x80);
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render_line(0x40);
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render_line(0x20);
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render_line(0x10);
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render_line(0x08);
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render_line(0x04);
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render_line(0x02);
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render_line(0x01);
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#undef render_line
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offset += 2;
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}
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}
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return tiledata[2] + (tile << 6);
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}
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auto PPU::Cache::tile(uint bpp, uint tile) -> uint8* {
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switch(bpp) {
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case 0: return tile_2bpp(tile);
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case 1: return tile_4bpp(tile);
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case 2: return tile_8bpp(tile);
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}
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}
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