started work on sprite rendering

src/debugger/Debugger.cpp

@@ -10,6 +10,7 @@
 #include "Disassembler.hpp"
 #include "MemoryViewer.hpp"
 #include "NametableViewer.hpp"
+#include "OAMViewer.hpp"
 #include "PatternTableViewer.hpp"
 #include "ControllerPortViewer.hpp"
 #include "Palettes.hpp"
@@ -27,6 +28,7 @@ Debugger::Debugger(Bus* bus) :
 
 	windows.push_back(new MemoryViewer(this, bus));
 	windows.push_back(new NametableViewer(this, bus));
+	windows.push_back(new OAMViewer(this, &bus->ppu));
 	windows.push_back(new PatternTableViewer(this, bus->cartridge.GetMapper()));
 	windows.push_back(new ControllerPortViewer(this, &bus->controllerPort));
 	windows.push_back(new Palettes(this, bus));

src/debugger/OAMViewer.cpp

@@ -0,0 +1,33 @@
+#include "OAMViewer.hpp"
+
+#include "../PPU.hpp"
+#include <imgui/imgui.h>
+
+OAMViewer::OAMViewer(Debugger* debugger, PPU* ppu) :
+	DebugWindow("OAM Viewer", debugger), ppu(ppu)
+{
+}
+
+void OAMViewer::OnRender()
+{
+	if (!ImGui::Begin("OAM Viewer", &isOpen))
+	{
+		ImGui::End();
+		return;
+	}
+
+	char label[sizeof("Sprite 00")];
+	for (int i = 0; i < 64; i++)
+	{
+		std::sprintf(label, "Sprite %02d", i);
+		if (ImGui::CollapsingHeader(label))
+		{
+			ImGui::Text("Y pos    : %02X", ppu->OAM[4 * i + 0]);
+			ImGui::Text("Tile     : %02X", ppu->OAM[4 * i + 1]);
+			ImGui::Text("Attribute: %02X", ppu->OAM[4 * i + 2]);
+			ImGui::Text("X pos    : %02X", ppu->OAM[4 * i + 3]);
+		}
+	}
+
+	ImGui::End();
+}

src/debugger/OAMViewer.hpp

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "DebugWindow.hpp"
+
+class PPU;
+
+class OAMViewer :
+	public DebugWindow
+{
+public:
+	OAMViewer(Debugger* debugger, PPU* ppu);
+
+	virtual void OnRender() override;
+
+private:
+	PPU* ppu;
+};

src/debugger/PPUWatcher.cpp

@@ -121,6 +121,11 @@ void PPUWatcher::OnRender()
 				ImGui::TableNextColumn();
 				ImGui::Text("$%04X", ppu->ppuctrl.Flag.BackgrPatternTableAddr ? 0x1000 : 0x0000);
 
+				ImGui::TableNextColumn();
+				ImGui::Text("Sprite Size");
+				ImGui::TableNextColumn();
+				ImGui::Text(ppu->ppuctrl.Flag.SpriteSize ? "8x16" : "8x8");
+
 				ImGui::TableNextColumn();
 				ImGui::Text("Master/Slave");
 				ImGui::TableNextColumn();