Fix HTTPServer gpu-renderer interfacing

Fixing some compilation issues that occur when enabling the HTTP server

CMakeLists.txt

@@ -93,7 +93,7 @@ endif()
 
 set(SOURCE_FILES src/main.cpp src/emulator.cpp src/io_file.cpp src/config.cpp
 				 src/core/CPU/cpu_dynarmic.cpp src/core/CPU/dynarmic_cycles.cpp
-				 src/core/memory.cpp src/renderer.cpp src/httpserver.cpp src/stb_image_write.c
+				 src/core/memory.cpp src/renderer.cpp src/httpserver.cpp src/stb_image_write.c src/httpserver.cpp
 )
 set(CRYPTO_SOURCE_FILES src/core/crypto/aes_engine.cpp)
 set(KERNEL_SOURCE_FILES src/core/kernel/kernel.cpp src/core/kernel/resource_limits.cpp

include/PICA/gpu.hpp

@@ -85,6 +85,7 @@ class GPU {
 	GPU(Memory& mem, EmulatorConfig& config);
 	void initGraphicsContext() { renderer->initGraphicsContext(); }
 	void display() { renderer->display(); }
+	void screenshot(const std::string& name) { renderer->screenshot(name); }
 
 	void fireDMA(u32 dest, u32 source, u32 size);
 	void reset();

include/renderer.hpp

@@ -27,6 +27,8 @@ class Renderer {
 	virtual void displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u32 outputSize, u32 flags) = 0;  // Perform display transfer
 	virtual void drawVertices(PICA::PrimType primType, std::span<const PICA::Vertex> vertices) = 0;             // Draw the given vertices
 
+	virtual void screenshot(const std::string& name) = 0;
+
 	virtual void setFBSize(u32 width, u32 height) = 0;
 
 	virtual void setColourFormat(PICA::ColorFmt format) = 0;

include/renderer_gl/renderer_gl.hpp

@@ -1,7 +1,8 @@
 #pragma once
+#include <stb_image_write.h>
+
 #include <array>
 #include <span>
-#include <stb_image_write.h>
 
 #include "PICA/float_types.hpp"
 #include "PICA/pica_vertex.hpp"

src/core/renderer_gl/renderer_gl.cpp

@@ -1034,7 +1034,7 @@ void RendererGL::displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u
 	OpenGL::draw(OpenGL::TriangleStrip, 4);  // Actually draw our 3DS screen
 }
 
-void Renderer::screenshot(const std::string& name) {
+void RendererGL::screenshot(const std::string& name) {
 	constexpr uint width = 400;
 	constexpr uint height = 2 * 240;