Moar HTTP

include/PICA/gpu.hpp

@@ -88,6 +88,7 @@ class GPU {
 	void initGraphicsContext() { renderer.initGraphicsContext(); }
 	void getGraphicsContext() { renderer.getGraphicsContext(); }
 	void display() { renderer.display(); }
+	void screenshot(const std::string& name) { renderer.screenshot(name); }
 
 	void fireDMA(u32 dest, u32 source, u32 size);
 	void reset();

include/emulator.hpp

@@ -69,7 +69,6 @@ class Emulator {
 	void reset();
 	void run();
 	void runFrame();
-	void screenshot(const std::string& name);
 
 	bool loadROM(const std::filesystem::path& path);
 	bool loadNCSD(const std::filesystem::path& path, ROMType type);

include/renderer_gl/renderer_gl.hpp

@@ -1,6 +1,7 @@
 #pragma once
 #include <array>
 #include <span>
+#include <stb_image_write.h>
 
 #include "PICA/float_types.hpp"
 #include "gl_state.hpp"
@@ -88,6 +89,9 @@ class Renderer {
 	void displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u32 outputSize, u32 flags);  // Perform display transfer
 	void drawVertices(PICA::PrimType primType, std::span<const PICA::Vertex> vertices);             // Draw the given vertices
 
+	// Take a screenshot of the screen and store it in a file
+	void screenshot(const std::string& name);
+
 	void setFBSize(u32 width, u32 height) {
 		fbSize.x() = width;
 		fbSize.y() = height;

src/core/renderer_gl/renderer_gl.cpp

@@ -669,7 +669,7 @@ void Renderer::initGraphicsContext() {
 	dummyVAO.create();
 
 	// Create texture and framebuffer for the 3DS screen
-	const u32 screenTextureWidth = 2 * 400; // Top screen is 400 pixels wide, bottom is 320
+	const u32 screenTextureWidth = 400; // Top screen is 400 pixels wide, bottom is 320
 	const u32 screenTextureHeight = 2 * 240; // Both screens are 240 pixels tall
 	
 	glGenTextures(1,&lightLUTTextureArray);
@@ -1028,4 +1028,29 @@ void Renderer::displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u32
 	}
 
 	OpenGL::draw(OpenGL::TriangleStrip, 4); // Actually draw our 3DS screen
+}
+
+void Renderer::screenshot(const std::string& name) {
+	constexpr uint width = 400;
+	constexpr uint height = 2 * 240;
+
+	std::vector<uint8_t> pixels, flippedPixels;
+	pixels.resize(width *  height * 4);
+	flippedPixels.resize(pixels.size());;
+
+	OpenGL::bindScreenFramebuffer();
+	glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, pixels.data());
+
+	// Flip the image vertically
+	for (int y = 0; y < height; y++) {
+		memcpy(&flippedPixels[y * width * 4], &pixels[(height - y - 1) * width * 4], width * 4);
+		// Swap R and B channels
+		for (int x = 0; x < width; x++) {
+			std::swap(flippedPixels[y * width * 4 + x * 4 + 0], flippedPixels[y * width * 4 + x * 4 + 2]);
+			// Set alpha to 0xFF
+			flippedPixels[y * width * 4 + x * 4 + 3] = 0xFF;
+		}
+	}
+
+	stbi_write_png(name.c_str(), width, height, 4, flippedPixels.data(), 0);
 }

src/emulator.cpp

@@ -82,27 +82,6 @@ void Emulator::reset() {
 	}
 }
 
-void Emulator::screenshot(const std::string& name) {
-	std::vector<uint8_t> pixels, flippedPixels;
-	pixels.resize(width * height * 4);
-	flippedPixels.resize(width * height * 4);
-
-	glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_BYTE, pixels.data());
-
-	// Flip the image vertically
-	for (int y = 0; y < height; y++) {
-		memcpy(&flippedPixels[y * width * 4], &pixels[(height - y - 1) * width * 4], width * 4);
-		// Swap R and B channels
-		for (int x = 0; x < width; x++) {
-			std::swap(flippedPixels[y * width * 4 + x * 4 + 0], flippedPixels[y * width * 4 + x * 4 + 2]);
-			// Set alpha to 0xFF
-			flippedPixels[y * width * 4 + x * 4 + 3] = 0xFF;
-		}
-	}
-
-	stbi_write_png(name.c_str(), width, height, 4, flippedPixels.data(), 0);
-}
-
 void Emulator::step() {}
 void Emulator::render() {}
 
@@ -428,28 +407,27 @@ void Emulator::pollHttpServer() {
 	
 	if (httpServer.pendingAction) {
 		switch (httpServer.action) {
-			case HttpAction::Screenshot: {
-				screenshot(HttpServer::httpServerScreenshotPath);
+			case HttpAction::Screenshot:
+				gpu.screenshot(HttpServer::httpServerScreenshotPath);
 				break;
-			}
-			case HttpAction::PressKey: {
+
+			case HttpAction::PressKey:
 				if (httpServer.pendingKey != 0) {
 					srv.pressKey(httpServer.pendingKey);
 					httpServer.pendingKey = 0;
 				}
 				break;
-			}
-			case HttpAction::ReleaseKey: {
+
+			case HttpAction::ReleaseKey:
 				if (httpServer.pendingKey != 0) {
 					srv.releaseKey(httpServer.pendingKey);
 					httpServer.pendingKey = 0;
 				}
 				break;
-			}
-			case HttpAction::None: {
-				break;
-			}
+
+			case HttpAction::None: break;
 		}
+
 		httpServer.action = HttpAction::None;
 		httpServer.pendingAction = false;
 		httpServer.pendingAction.notify_all();

src/httpserver.cpp

@@ -1,11 +1,11 @@
 #ifdef PANDA3DS_ENABLE_HTTP_SERVER
 #include "httpserver.hpp"
 
-#include <vector>
-#include <map>
-#include <thread>
 #include <fstream>
+#include <map>
 #include <string>
+#include <thread>
+#include <vector>
 
 #include "httplib.h"
 #include "services/hid.hpp"
@@ -42,9 +42,7 @@ void HttpServer::startHttpServer() {
 	std::thread http_thread([this]() {
 		httplib::Server server;
 
-		server.Get("/ping", [](const httplib::Request&, httplib::Response& response) {
-			response.set_content("pong", "text/plain");
-		});
+		server.Get("/ping", [](const httplib::Request&, httplib::Response& response) { response.set_content("pong", "text/plain"); });
 
 		server.Get("/screen", [this](const httplib::Request&, httplib::Response& response) {
 			{
@@ -61,9 +59,10 @@ void HttpServer::startHttpServer() {
 
 		server.Get("/input", [this](const httplib::Request& request, httplib::Response& response) {
 			bool ok = false;
-			for (auto& [keyStr, value]: request.params) {
+			for (auto& [keyStr, value] : request.params) {
 				auto key = stringToKey(keyStr);
 				printf("Param: %s\n", keyStr.c_str());
+
 				if (key != 0) {
 					std::scoped_lock lock(actionMutex);
 					pendingAction = true;
@@ -97,6 +96,7 @@ void HttpServer::startHttpServer() {
 		printf("Starting HTTP server on port 1234\n");
 		server.listen("localhost", 1234);
 	});
+
 	http_thread.detach();
 }