Merge branch 'bottom-screen' of github.com:fleroviux/Panda3DS into pica-tev-emulation

include/PICA/regs.hpp

@@ -1,4 +1,5 @@
 #pragma once
+#include "helpers.hpp"
 
 namespace PICAInternalRegs {
 	enum : u32 {
@@ -71,7 +72,7 @@ namespace PICAInternalRegs {
 		FixedAttribData0 = 0x233,
 		FixedAttribData1 = 0x234,
 		FixedAttribData2 = 0x235,
-		
+
 		// Command processor registers
 		CmdBufSize0 = 0x238,
 		CmdBufSize1 = 0x239,

include/cpu_dynarmic.hpp

@@ -1,5 +1,7 @@
 #pragma once
 
+#include <span>
+
 #include "dynarmic/interface/A32/a32.h"
 #include "dynarmic/interface/A32/config.h"
 #include "dynarmic/interface/exclusive_monitor.h"
@@ -132,17 +134,11 @@ public:
         return jit->Regs()[index];
     }
 
-    std::array<u32, 16>& regs() {
-        return jit->Regs();
-    }
+	std::span<u32, 16> regs() { return jit->Regs(); }
 
-    // Get reference to array of FPRs. This array consists of the FPRs as single precision values
-    // Hence why its base type is u32
-    // Note: Dynarmic keeps 64 VFP registers as VFPv3 extends the VFP register set to 64 registers.
-    // However the 3DS ARM11 is an ARMv6k processor with VFPv2, so only the first 32 registers are actually used
-    std::array<u32, 64>& fprs() {
-        return jit->ExtRegs();
-    }
+	// Get reference to array of FPRs. This array consists of the FPRs as single precision values
+	// Hence why its base type is u32
+	std::span<u32, 32> fprs() { return std::span(jit->ExtRegs()).first<32>(); }
 
     void setCPSR(u32 value) {
         jit->SetCpsr(value);

include/kernel/kernel.hpp

@@ -2,10 +2,12 @@
 #include <array>
 #include <cassert>
 #include <limits>
+#include <span>
 #include <string>
 #include <vector>
-#include "kernel_types.hpp"
+
 #include "helpers.hpp"
+#include "kernel_types.hpp"
 #include "logger.hpp"
 #include "memory.hpp"
 #include "resource_limits.hpp"
@@ -14,7 +16,7 @@
 class CPU;
 
 class Kernel {
-	std::array<u32, 16>& regs;
+	std::span<u32, 16> regs;
 	CPU& cpu;
 	Memory& mem;
 

include/opengl.hpp

@@ -30,6 +30,19 @@
 
 #include "gl3w.h"
 
+// Check if we have C++20. If yes, we can add C++20 std::span support
+#ifdef _MSVC_LANG // MSVC does not properly define __cplusplus without a compiler flag...
+#if _MSVC_LANG >= 202002L
+#define OPENGL_HAVE_CPP20
+#endif
+#elif __cplusplus >= 202002L
+#define OPENGL_HAVE_CPP20
+#endif // MSVC_LANG
+
+#ifdef OPENGL_HAVE_CPP20
+#include <span>
+#endif
+
 // Uncomment the following define if you want GL objects to automatically free themselves when their lifetime ends
 // #define OPENGL_DESTRUCTORS
 
@@ -389,17 +402,30 @@ namespace OpenGL {
         void free() { glDeleteBuffers(1, &m_handle); }
 
         // Reallocates the buffer on every call. Prefer the sub version if possible.
-        template <typename VertType>
-        void bufferVerts(VertType* vertices, int vertCount, GLenum usage = GL_DYNAMIC_DRAW) {
-            glBufferData(GL_ARRAY_BUFFER, sizeof(VertType) * vertCount, vertices, usage);
-        }
+		template <typename VertType>
+		void bufferVerts(VertType* vertices, int vertCount, GLenum usage = GL_DYNAMIC_DRAW) {
+			glBufferData(GL_ARRAY_BUFFER, sizeof(VertType) * vertCount, vertices, usage);
+		}
 
-        // Only use if you used createFixedSize
-        template <typename VertType>
-        void bufferVertsSub(VertType* vertices, int vertCount, GLintptr offset = 0) {
-            glBufferSubData(GL_ARRAY_BUFFER, offset, sizeof(VertType) * vertCount, vertices);
-        }
-    };
+		// Only use if you used createFixedSize
+		template <typename VertType>
+		void bufferVertsSub(VertType* vertices, int vertCount, GLintptr offset = 0) {
+			glBufferSubData(GL_ARRAY_BUFFER, offset, sizeof(VertType) * vertCount, vertices);
+		}
+
+        // If C++20 is available, add overloads that take std::span instead of raw pointers
+#ifdef OPENGL_HAVE_CPP20
+		template <typename VertType>
+		void bufferVerts(std::span<const VertType> vertices, GLenum usage = GL_DYNAMIC_DRAW) {
+			glBufferData(GL_ARRAY_BUFFER, sizeof(VertType) * vertices.size(), vertices.data(), usage);
+		}
+
+		template <typename VertType>
+		void bufferVertsSub(std::span<const VertType> vertices, GLintptr offset = 0) {
+			glBufferSubData(GL_ARRAY_BUFFER, offset, sizeof(VertType) * vertices.size(), vertices.data());
+		}
+#endif
+	};
 
     enum DepthFunc {
         Never = GL_NEVER,       // Depth test never passes

include/renderer_gl/renderer_gl.hpp

@@ -1,5 +1,7 @@
 #pragma once
 #include <array>
+#include <span>
+
 #include "helpers.hpp"
 #include "logger.hpp"
 #include "opengl.hpp"
@@ -50,11 +52,11 @@ class Renderer {
 	SurfaceCache<ColourBuffer, 10> colourBufferCache;
 	SurfaceCache<Texture, 256> textureCache;
 
-	OpenGL::uvec2 fbSize; // The size of the framebuffer (ie both the colour and depth buffer)'
+	OpenGL::uvec2 fbSize;  // The size of the framebuffer (ie both the colour and depth buffer)'
+
+	u32 colourBufferLoc;                       // Location in 3DS VRAM for the colour buffer
+	ColourBuffer::Formats colourBufferFormat;  // Format of the colours stored in the colour buffer
 
-	u32 colourBufferLoc; // Location in 3DS VRAM for the colour buffer
-	ColourBuffer::Formats colourBufferFormat; // Format of the colours stored in the colour buffer
-	
 	// Same for the depth/stencil buffer
 	u32 depthBufferLoc;
 	DepthBuffer::Formats depthBufferFormat;
@@ -63,7 +65,7 @@ class Renderer {
 	OpenGL::VertexArray dummyVAO;
 	OpenGL::VertexBuffer dummyVBO;
 
-	static constexpr u32 regNum = 0x300; // Number of internal PICA registers
+	static constexpr u32 regNum = 0x300;  // Number of internal PICA registers
 	const std::array<u32, regNum>& regs;
 
 	OpenGL::Texture screenTexture;
@@ -77,16 +79,16 @@ class Renderer {
 	void bindDepthBuffer();
 	void setupTextureEnvState();
 
-public:
+  public:
 	Renderer(GPU& gpu, const std::array<u32, regNum>& internalRegs) : gpu(gpu), regs(internalRegs) {}
 
 	void reset();
-	void display(); // Display the 3DS screen contents to the window
-	void initGraphicsContext(); // Initialize graphics context
-	void getGraphicsContext();  // Set up graphics context for rendering
-	void clearBuffer(u32 startAddress, u32 endAddress, u32 value, u32 control); // Clear a GPU buffer in VRAM
-	void displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u32 outputSize, u32 flags); // Perform display transfer
-	void drawVertices(OpenGL::Primitives primType, Vertex* vertices, u32 count); // Draw the given vertices
+	void display();                                                                                 // Display the 3DS screen contents to the window
+	void initGraphicsContext();                                                                     // Initialize graphics context
+	void getGraphicsContext();                                                                      // Set up graphics context for rendering
+	void clearBuffer(u32 startAddress, u32 endAddress, u32 value, u32 control);                     // Clear a GPU buffer in VRAM
+	void displayTransfer(u32 inputAddr, u32 outputAddr, u32 inputSize, u32 outputSize, u32 flags);  // Perform display transfer
+	void drawVertices(OpenGL::Primitives primType, std::span<const Vertex> vertices);               // Draw the given vertices
 
 	void setFBSize(u32 width, u32 height) {
 		fbSize.x() = width;

include/services/service_manager.hpp

@@ -1,6 +1,8 @@
 #pragma once
 #include <array>
 #include <optional>
+#include <span>
+
 #include "kernel_types.hpp"
 #include "logger.hpp"
 #include "memory.hpp"
@@ -14,16 +16,16 @@
 #include "services/cfg.hpp"
 #include "services/dlp_srvr.hpp"
 #include "services/dsp.hpp"
-#include "services/hid.hpp"
 #include "services/frd.hpp"
 #include "services/fs.hpp"
 #include "services/gsp_gpu.hpp"
 #include "services/gsp_lcd.hpp"
+#include "services/hid.hpp"
 #include "services/ldr_ro.hpp"
 #include "services/mic.hpp"
+#include "services/ndm.hpp"
 #include "services/nfc.hpp"
 #include "services/nim.hpp"
-#include "services/ndm.hpp"
 #include "services/ptm.hpp"
 #include "services/y2r.hpp"
 
@@ -31,7 +33,7 @@
 class Kernel;
 
 class ServiceManager {
-	std::array<u32, 16>& regs;
+	std::span<u32, 16> regs;
 	Memory& mem;
 	Kernel& kernel;
 
@@ -69,8 +71,8 @@ class ServiceManager {
 	void registerClient(u32 messagePointer);
 	void subscribe(u32 messagePointer);
 
-public:
-	ServiceManager(std::array<u32, 16>& regs, Memory& mem, GPU& gpu, u32& currentPID, Kernel& kernel);
+  public:
+	ServiceManager(std::span<u32, 16> regs, Memory& mem, GPU& gpu, u32& currentPID, Kernel& kernel);
 	void reset();
 	void initializeFS() { fs.initializeFilesystem(); }
 	void handleSyncRequest(u32 messagePointer);