starting to implement true TileRenderer

sources/Debugger/TileViewer/TileViewer.cpp

@@ -0,0 +1,142 @@
+//
+// Created by cbihan on 5/7/21.
+//
+
+namespace ComSquare::Renderer
+{
+	class QtFullSFML;
+}
+
+#include "Renderer/QtRenderer/QtSFML.hpp"
+#include "TileViewer.hpp"
+#include "SNES.hpp"
+#include <QColor>
+#include <string>
+#include <iostream>
+#include <QtWidgets/QTableWidget>
+#include <utility>
+#include <complex>
+#include "Utility/Utility.hpp"
+#include "PPU/PPU.hpp"
+
+namespace ComSquare::Debugger
+{
+	TileViewer::TileViewer(SNES &snes, ComSquare::PPU::PPU &ppu)
+		: _window(new ClosableWindow<TileViewer>(*this, &TileViewer::disableViewer)),
+		  _snes(snes),
+		  _ui(),
+		  _ppu(ppu)
+	{
+		this->_window->setContextMenuPolicy(Qt::NoContextMenu);
+		this->_window->setAttribute(Qt::WA_QuitOnClose, false);
+		this->_window->setAttribute(Qt::WA_DeleteOnClose);
+
+		this->_ui.setupUi(this->_window);
+		this->_sfWidget = std::make_unique<Renderer::QtSFML>(this->_ui.tab);
+		this->_window->show();
+		QEvent::registerEventType();
+	}
+
+	void TileViewer::disableViewer()
+	{
+		this->_snes.disableTileViewerDebugging();
+	}
+
+	void TileViewer::focus()
+	{
+		this->_window->activateWindow();
+	}
+
+	bool TileViewer::isDebugger()
+	{
+		return true;
+	}
+
+	uint16_t TileViewer::read(uint8_t addr)
+	{
+		return this->_ppu.cgramRead(addr);
+	}
+
+	TileRenderer::TileRenderer()
+		: _ram(nullptr),
+		  _cgram(nullptr),
+		  _bpp(2),
+		  _palette(0),
+		  buffer({{{0}}})
+	{
+	}
+
+	void TileRenderer::setRam(std::shared_ptr<Ram::Ram> ram)
+	{
+		this->_ram = std::move(ram);
+	}
+
+	void TileRenderer::render()
+	{
+		uint8_t colorReference;
+		uint24_t color;
+		std::vector<uint16_t> palette = this->getPalette(this->_palette);
+		int bufX = 0;
+		int bufY = 0;
+
+		for (uint24_t i = 0; i < this->_ram->getSize(); i += this->_bpp) {
+			for (int j = 0; j < 8; j ++) {
+				colorReference = this->getPixelReferenceFromTileRow(i, j);
+				color =  PPU::getRealColor(palette[colorReference]);
+				buffer[bufY++][bufX++] = color;
+			}
+		}
+	}
+
+	void TileRenderer::setPalette(int palette)
+	{
+		this->_palette = palette;
+	}
+
+	void TileRenderer::setBpp(int bpp)
+	{
+		this->_bpp = bpp;
+	}
+
+	uint8_t TileRenderer::getPixelReferenceFromTileRow(uint16_t tileRowAddress, uint8_t pixelIndex)
+	{
+		size_t size = this->_ram->getSize();
+		uint8_t highByte = this->_ram->read(tileRowAddress % size);
+		uint8_t lowByte = this->_ram->read((tileRowAddress + 1) % size);
+		uint8_t secondHighByte;
+		uint8_t secondLowByte;
+		uint16_t result = 0;
+		uint8_t shift = 8 - 1U - pixelIndex;
+
+		switch (this->_bpp) {
+		case 8:
+			return highByte;
+		case 4:
+			secondHighByte =  this->_ram->read((tileRowAddress + 16) % size);
+			secondLowByte = this->_ram->read((tileRowAddress + 17) % size);
+			result = ((secondHighByte & (1U << shift)) | ((secondLowByte & (1U << shift)) << 1U));
+			result = (shift - 2 >= 0) ? result >> (shift - 2) : result << ((shift - 2) * -1);
+			FALLTHROUGH
+		case 2:
+			result += ((highByte & (1U << shift)) | ((lowByte & (1U << shift)) << 1U)) >> shift;
+		default:
+			break;
+		}
+		return result;
+	}
+
+	std::vector<uint16_t> TileRenderer::getPalette(int nbPalette)
+	{
+		uint8_t nbColors = std::pow(2, this->_bpp);
+		uint16_t addr = nbPalette * this->_bpp * this->_bpp * 2; // 2 because it's 2 addr for 1 color
+		std::vector<uint16_t> palette(nbColors);
+
+		for (int i = 0; i < nbColors; i++) {
+			palette[i] = this->_cgram->read(addr);
+			palette[i] += this->_cgram->read(addr + 1) << 8U;
+			addr += 2;
+		}
+		return palette;
+	}
+
+}