394 lines
No EOL
13 KiB
C++
394 lines
No EOL
13 KiB
C++
#include "stdafx.h"
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#include "PpuTools.h"
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#include "Ppu.h"
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#include "DebugTypes.h"
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#include "Console.h"
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#include "BaseCartridge.h"
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#include "MemoryManager.h"
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#include "NotificationManager.h"
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PpuTools::PpuTools(Console *console, Ppu *ppu)
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{
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_console = console;
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_ppu = ppu;
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}
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uint8_t PpuTools::GetTilePixelColor(const uint8_t* ram, const uint32_t ramMask, const uint8_t bpp, const uint32_t pixelStart, const uint8_t shift)
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{
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uint8_t color;
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if(bpp == 2) {
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color = (((ram[(pixelStart + 0) & ramMask] >> shift) & 0x01) << 0);
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color |= (((ram[(pixelStart + 1) & ramMask] >> shift) & 0x01) << 1);
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} else if(bpp == 4) {
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color = (((ram[(pixelStart + 0) & ramMask] >> shift) & 0x01) << 0);
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color |= (((ram[(pixelStart + 1) & ramMask] >> shift) & 0x01) << 1);
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color |= (((ram[(pixelStart + 16) & ramMask] >> shift) & 0x01) << 2);
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color |= (((ram[(pixelStart + 17) & ramMask] >> shift) & 0x01) << 3);
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} else if(bpp == 8) {
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color = (((ram[(pixelStart + 0) & ramMask] >> shift) & 0x01) << 0);
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color |= (((ram[(pixelStart + 1) & ramMask] >> shift) & 0x01) << 1);
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color |= (((ram[(pixelStart + 16) & ramMask] >> shift) & 0x01) << 2);
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color |= (((ram[(pixelStart + 17) & ramMask] >> shift) & 0x01) << 3);
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color |= (((ram[(pixelStart + 32) & ramMask] >> shift) & 0x01) << 4);
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color |= (((ram[(pixelStart + 33) & ramMask] >> shift) & 0x01) << 5);
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color |= (((ram[(pixelStart + 48) & ramMask] >> shift) & 0x01) << 6);
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color |= (((ram[(pixelStart + 49) & ramMask] >> shift) & 0x01) << 7);
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} else {
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throw std::runtime_error("unsupported bpp");
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}
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return color;
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}
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uint32_t PpuTools::ToArgb(uint16_t color)
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{
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uint8_t b = (color >> 10) << 3;
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uint8_t g = ((color >> 5) & 0x1F) << 3;
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uint8_t r = (color & 0x1F) << 3;
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return 0xFF000000 | (r << 16) | (g << 8) | b;
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}
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void PpuTools::BlendColors(uint8_t output[4], uint8_t input[4])
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{
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uint8_t alpha = input[3] + 1;
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uint8_t invertedAlpha = 256 - input[3];
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output[0] = (uint8_t)((alpha * input[0] + invertedAlpha * output[0]) >> 8);
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output[1] = (uint8_t)((alpha * input[1] + invertedAlpha * output[1]) >> 8);
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output[2] = (uint8_t)((alpha * input[2] + invertedAlpha * output[2]) >> 8);
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output[3] = 0xFF;
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}
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uint32_t PpuTools::GetRgbPixelColor(uint8_t* cgram, uint8_t colorIndex, uint8_t palette, uint8_t bpp, bool directColorMode, uint16_t basePaletteOffset)
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{
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uint16_t paletteColor;
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if(bpp == 8 && directColorMode) {
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paletteColor = (
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((((colorIndex & 0x07) << 1) | (palette & 0x01)) << 1) |
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(((colorIndex & 0x38) | ((palette & 0x02) << 1)) << 4) |
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(((colorIndex & 0xC0) | ((palette & 0x04) << 3)) << 7)
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);
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} else {
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uint16_t paletteRamOffset = basePaletteOffset + (palette * (1 << bpp) + colorIndex) * 2;
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paletteColor = cgram[paletteRamOffset] | (cgram[paletteRamOffset + 1] << 8);
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}
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return ToArgb(paletteColor);
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}
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void PpuTools::GetTileView(GetTileViewOptions options, uint8_t *source, uint32_t srcSize, uint8_t *cgram, uint32_t *outBuffer)
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{
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uint8_t* ram = source;
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uint32_t ramMask = srcSize - 1;
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uint8_t bpp;
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bool directColor = false;
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switch(options.Format) {
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case TileFormat::Bpp2: bpp = 2; break;
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case TileFormat::Bpp4: bpp = 4; break;
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case TileFormat::DirectColor:
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directColor = true;
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bpp = 8;
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break;
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case TileFormat::Mode7:
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bpp = 16;
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break;
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case TileFormat::Mode7DirectColor:
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directColor = true;
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bpp = 16;
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break;
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default: bpp = 8; break;
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}
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int bytesPerTile = 64 * bpp / 8;
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int tileCount = 0x10000 / bytesPerTile;
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uint16_t bgColor = (cgram[1] << 8) | cgram[0];
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for(int i = 0; i < 512 * 512; i++) {
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outBuffer[i] = ToArgb(bgColor);
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}
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int rowCount = tileCount / options.Width;
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for(int row = 0; row < rowCount; row++) {
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uint32_t baseOffset = row * bytesPerTile * options.Width;
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for(int column = 0; column < options.Width; column++) {
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uint32_t addr = baseOffset + bytesPerTile * column;
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int baseOutputOffset;
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if(options.Layout == TileLayout::SingleLine8x16) {
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int displayColumn = column / 2 + ((row & 0x01) ? options.Width/2 : 0);
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int displayRow = (row & ~0x01) + ((column & 0x01) ? 1 : 0);
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baseOutputOffset = displayRow * options.Width * 64 + displayColumn * 8;
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} else if(options.Layout == TileLayout::SingleLine16x16) {
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int displayColumn = (column / 2) + (column & 0x01) + ((row & 0x01) ? options.Width/2 : 0) + ((column & 0x02) ? -1 : 0);
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int displayRow = (row & ~0x01) + ((column & 0x02) ? 1 : 0);
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baseOutputOffset = displayRow * options.Width * 64 + displayColumn * 8;
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} else {
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baseOutputOffset = row * options.Width * 64 + column * 8;
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}
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if(options.Format == TileFormat::Mode7 || options.Format == TileFormat::Mode7DirectColor) {
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for(int y = 0; y < 8; y++) {
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uint32_t pixelStart = addr + y * 16;
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for(int x = 0; x < 8; x++) {
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uint8_t color = ram[(pixelStart + x * 2 + 1) & ramMask];
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if(color != 0) {
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uint32_t rgbColor;
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if(directColor) {
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rgbColor = ToArgb(((color & 0x07) << 2) | ((color & 0x38) << 4) | ((color & 0xC0) << 7));
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} else {
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rgbColor = GetRgbPixelColor(cgram, color, 0, 8, false, 0);
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}
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outBuffer[baseOutputOffset + (y*options.Width*8) + x] = rgbColor;
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}
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}
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}
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} else {
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for(int y = 0; y < 8; y++) {
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uint32_t pixelStart = addr + y * 2;
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for(int x = 0; x < 8; x++) {
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uint8_t color = GetTilePixelColor(ram, ramMask, bpp, pixelStart, 7 - x);
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if(color != 0) {
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outBuffer[baseOutputOffset + (y*options.Width*8) + x] = GetRgbPixelColor(cgram, color, options.Palette, bpp, directColor, 0);
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}
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}
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}
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}
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}
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}
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}
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void PpuTools::GetTilemap(GetTilemapOptions options, uint8_t* vram, uint8_t* cgram, uint32_t* outBuffer)
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{
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static constexpr uint8_t layerBpp[8][4] = {
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{ 2,2,2,2 }, { 4,4,2,0 }, { 4,4,0,0 }, { 8,4,0,0 }, { 8,2,0,0 }, { 4,2,0,0 }, { 4,0,0,0 }, { 8,0,0,0 }
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};
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PpuState state = _ppu->GetState();
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options.BgMode = state.BgMode;
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bool directColor = state.DirectColorMode && (options.BgMode == 3 || options.BgMode == 4 || options.BgMode == 7);
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uint16_t basePaletteOffset = 0;
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if(options.BgMode == 0) {
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basePaletteOffset = options.Layer * 64;
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}
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LayerConfig layer = state.Layers[options.Layer];
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uint32_t bgColor = ToArgb((cgram[1] << 8) | cgram[0]);
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std::fill(outBuffer, outBuffer + 1024*1024, bgColor);
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uint8_t bpp = layerBpp[options.BgMode][options.Layer];
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if(bpp == 0) {
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return;
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}
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bool largeTileWidth = layer.LargeTiles || options.BgMode == 5 || options.BgMode == 6;
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bool largeTileHeight = layer.LargeTiles;
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if(options.BgMode == 7) {
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for(int row = 0; row < 128; row++) {
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for(int column = 0; column < 128; column++) {
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uint32_t tileIndex = vram[row * 256 + column * 2];
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uint32_t tileAddr = tileIndex * 128;
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for(int y = 0; y < 8; y++) {
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uint32_t pixelStart = tileAddr + y * 16;
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for(int x = 0; x < 8; x++) {
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uint8_t color = vram[pixelStart + x * 2 + 1];
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if(color != 0) {
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uint32_t rgbColor;
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if(directColor) {
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rgbColor = ToArgb(((color & 0x07) << 2) | ((color & 0x38) << 4) | ((color & 0xC0) << 7));
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} else {
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rgbColor = GetRgbPixelColor(cgram, color, 0, 8, false, 0);
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}
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outBuffer[((row * 8) + y) * 1024 + column * 8 + x] = rgbColor;
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}
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}
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}
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}
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}
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} else {
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int tileHeight = largeTileHeight ? 16 : 8;
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int tileWidth = largeTileWidth ? 16 : 8;
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for(int row = 0; row < (layer.DoubleHeight ? 64 : 32); row++) {
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uint16_t addrVerticalScrollingOffset = layer.DoubleHeight ? ((row & 0x20) << (layer.DoubleWidth ? 6 : 5)) : 0;
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uint16_t baseOffset = (layer.TilemapAddress >> 1) + addrVerticalScrollingOffset + ((row & 0x1F) << 5);
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for(int column = 0; column < (layer.DoubleWidth ? 64 : 32); column++) {
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uint16_t addr = (baseOffset + (column & 0x1F) + (layer.DoubleWidth ? ((column & 0x20) << 5) : 0)) << 1;
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bool vMirror = (vram[addr + 1] & 0x80) != 0;
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bool hMirror = (vram[addr + 1] & 0x40) != 0;
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uint16_t tileIndex = ((vram[addr + 1] & 0x03) << 8) | vram[addr];
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for(int y = 0; y < tileHeight; y++) {
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uint8_t yOffset = vMirror ? (7 - (y & 0x07)) : (y & 0x07);
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for(int x = 0; x < tileWidth; x++) {
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uint16_t tileOffset = (
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(largeTileHeight ? ((y & 0x08) ? (vMirror ? 0 : 16) : (vMirror ? 16 : 0)) : 0) +
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(largeTileWidth ? ((x & 0x08) ? (hMirror ? 0 : 1) : (hMirror ? 1 : 0)) : 0)
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);
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uint16_t tileStart = layer.ChrAddress + ((tileIndex + tileOffset) & 0x3FF) * 8 * bpp;
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uint16_t pixelStart = tileStart + yOffset * 2;
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uint8_t shift = hMirror ? (x & 0x07) : (7 - (x & 0x07));
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uint8_t color = GetTilePixelColor(vram, Ppu::VideoRamSize - 1, bpp, pixelStart, shift);
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if(color != 0) {
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uint8_t palette = bpp == 8 ? 0 : (vram[addr + 1] >> 2) & 0x07;
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outBuffer[((row * tileHeight) + y) * 1024 + column * tileWidth + x] = GetRgbPixelColor(cgram, color, palette, bpp, directColor, basePaletteOffset);
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}
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}
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}
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}
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}
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}
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}
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static constexpr uint8_t _oamSizes[8][2][2] = {
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{ { 1, 1 }, { 2, 2 } }, //8x8 + 16x16
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{ { 1, 1 }, { 4, 4 } }, //8x8 + 32x32
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{ { 1, 1 }, { 8, 8 } }, //8x8 + 64x64
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{ { 2, 2 }, { 4, 4 } }, //16x16 + 32x32
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{ { 2, 2 }, { 8, 8 } }, //16x16 + 64x64
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{ { 4, 4 }, { 8, 8 } }, //32x32 + 64x64
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{ { 2, 4 }, { 4, 8 } }, //16x32 + 32x64
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{ { 2, 4 }, { 4, 4 } } //16x32 + 32x32
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};
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void PpuTools::GetSpritePreview(GetSpritePreviewOptions options, PpuState state, uint8_t *vram, uint8_t *oamRam, uint8_t *cgram, uint32_t *outBuffer)
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{
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//TODO
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//uint16_t baseAddr = state.EnableOamPriority ? (_internalOamAddress & 0x1FC) : 0;
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uint16_t baseAddr = 0;
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bool filled[256 * 240] = {};
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int lastScanline = state.OverscanMode ? 239 : 224;
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std::fill(outBuffer, outBuffer + 256 * lastScanline, 0xFF888888);
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std::fill(outBuffer + 256 * lastScanline, outBuffer + 256 * 240, 0xFF000000);
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for(int screenY = 0; screenY < lastScanline; screenY++) {
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for(int i = 508; i >= 0; i -= 4) {
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uint16_t addr = (baseAddr + i) & 0x1FF;
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uint8_t y = oamRam[addr + 1];
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uint8_t highTableOffset = addr >> 4;
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uint8_t shift = ((addr >> 2) & 0x03) << 1;
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uint8_t highTableValue = oamRam[0x200 | highTableOffset] >> shift;
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uint8_t largeSprite = (highTableValue & 0x02) >> 1;
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uint8_t height = _oamSizes[state.OamMode][largeSprite][1] << 3;
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if(state.ObjInterlace) {
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height /= 2;
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}
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uint8_t endY = (y + height) & 0xFF;
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bool visible = (screenY >= y && screenY < endY) || (endY < y && screenY < endY);
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if(!visible) {
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//Not visible on this scanline
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continue;
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}
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uint8_t width = _oamSizes[state.OamMode][largeSprite][0] << 3;
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uint16_t sign = (highTableValue & 0x01) << 8;
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int16_t x = (int16_t)((sign | oamRam[addr]) << 7) >> 7;
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if(x != -256 && (x + width <= 0 || x > 255)) {
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//Sprite is not visible (and must be ignored for time/range flag calculations)
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//Sprites at X=-256 are always used when considering Time/Range flag calculations, but not actually drawn.
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continue;
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}
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int tileRow = (oamRam[addr + 2] & 0xF0) >> 4;
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int tileColumn = oamRam[addr + 2] & 0x0F;
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uint8_t flags = oamRam[addr + 3];
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bool useSecondTable = (flags & 0x01) != 0;
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uint8_t palette = (flags >> 1) & 0x07;
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//uint8_t priority = (flags >> 4) & 0x03;
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bool horizontalMirror = (flags & 0x40) != 0;
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bool verticalMirror = (flags & 0x80) != 0;
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uint8_t yOffset;
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int rowOffset;
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int yGap = (screenY - y);
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if(state.ObjInterlace) {
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yGap <<= 1;
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}
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if(verticalMirror) {
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yOffset = (height - 1 - yGap) & 0x07;
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rowOffset = (height - 1 - yGap) >> 3;
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} else {
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yOffset = yGap & 0x07;
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rowOffset = yGap >> 3;
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}
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uint8_t row = (tileRow + rowOffset) & 0x0F;
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for(int j = std::max<int16_t>(x, 0); j < x + width && j < 256; j++) {
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uint32_t outOffset = screenY * 256 + j;
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if(filled[outOffset]) {
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continue;
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}
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uint8_t xOffset;
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int columnOffset;
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if(horizontalMirror) {
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xOffset = (width - (j - x) - 1) & 0x07;
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columnOffset = (width - (j - x) - 1) >> 3;
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} else {
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xOffset = (j - x) & 0x07;
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columnOffset = (j - x) >> 3;
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}
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uint8_t column = (tileColumn + columnOffset) & 0x0F;
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uint8_t tileIndex = (row << 4) | column;
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uint16_t tileStart = ((state.OamBaseAddress + (tileIndex << 4) + (useSecondTable ? state.OamAddressOffset : 0)) & 0x7FFF) << 1;
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uint8_t color = GetTilePixelColor(vram, Ppu::VideoRamSize - 1, 4, tileStart + yOffset * 2, 7 - xOffset);
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if(color != 0) {
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if(options.SelectedSprite == i / 4) {
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filled[outOffset] = true;
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}
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outBuffer[outOffset] = GetRgbPixelColor(cgram, color, palette, 4, false, 256);
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}
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}
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}
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}
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}
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void PpuTools::SetViewerUpdateTiming(uint32_t viewerId, uint16_t scanline, uint16_t cycle)
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{
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//TODO Thread safety
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_updateTimings[viewerId] = (scanline << 16) | cycle;
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}
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void PpuTools::RemoveViewer(uint32_t viewerId)
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{
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//TODO Thread safety
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_updateTimings.erase(viewerId);
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}
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void PpuTools::UpdateViewers(uint16_t scanline, uint16_t cycle)
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{
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uint32_t currentCycle = (scanline << 16) | cycle;
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for(auto updateTiming : _updateTimings) {
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if(updateTiming.second == currentCycle) {
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_console->GetNotificationManager()->SendNotification(ConsoleNotificationType::ViewerRefresh, (void*)(uint64_t)updateTiming.first);
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}
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}
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} |