[Feat] (Diligent): Add Diligent Vulkan backend.

CMakeLists.txt

@@ -53,7 +53,7 @@ add_library(${CMAKE_PROJECT_NAME} SHARED
 
         MG/MG_GL/Implementations/EGL/GLES/EGL_WRAP.cpp
 
-        MG/MG_GL/Implementations/EGL/Diligent/GLES/EGL_impl.cpp
+        MG/MG_GL/Implementations/EGL/Diligent/EGL_impl.cpp
 
         # MG_GL/State
         MG/MG_GL/State/Core/GLState.cpp
@@ -119,6 +119,7 @@ target_link_libraries(MobileGL
         PRIVATE
         Diligent-Common
         Diligent-GraphicsEngineOpenGL-shared
+        Diligent-GraphicsEngineVk-shared
 )
 
 if (PROFILING)

MG/Constants.h

@@ -178,6 +178,10 @@ namespace MG_Constants {
 #define BACKEND_METAL 0x0016
 #define BACKEND_GLES 0x0017
 #define BACKEND_DILIGENT 0x0018
+
+inline const int BACKEND_DILIGENT_VULKAN = 0x0020;
+inline const int BACKEND_DILIGENT_METAL = 0x0021; // not ready currently
+inline const int BACKEND_DILIGENT_OPENGL = 0x0022;
     }
     
     inline const char* RenderName = "MobileGL";

MG/Includes.h

@@ -138,6 +138,7 @@
 #if BACKEND_TYPE == BACKEND_DILIGENT
 #include "EngineFactory.h"
 #include "EngineFactoryOpenGL.h"
+#include "EngineFactoryVk.h"
 #include "RefCntAutoPtr.hpp"
 
 #include "PipelineState.h"

MG/MG_GL/Implementations/EGL/Diligent/DiligentConfig.h

@@ -0,0 +1,10 @@
+//
+// Created by BZLZHH on 2025/5/25.
+//
+
+#pragma once
+#include "../../../../Includes.h"
+
+namespace MG_EGL::Diligent {
+    inline const int DILIGENT_BACKEND_TYPE = MG_Constants::Backend::BACKEND_DILIGENT_VULKAN;
+}

MG/MG_GL/Implementations/EGL/Diligent/EGL_impl.cpp

@@ -4,6 +4,7 @@
 
 #include "EGL_impl.h"
 
+typedef Diligent::IEngineFactoryVk* (*Diligent_GetEngineFactoryVk_t)();
 typedef Diligent::IEngineFactoryOpenGL* (*Diligent_GetEngineFactoryOpenGL_t)();
 
 using namespace Diligent;
@@ -53,9 +54,8 @@ void main(in  PSInput  PSIn,
     PSOut.Color = float4(PSIn.Color.rgb, 1.0);
 }
 )";
-
-    EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config, NativeWindowType window,
-                                      const EGLint *attrib_list) {
+    
+    void LoadDiligentCoreOpenGL(NativeWindowType window) {
         void *handle = dlopen("libGraphicsEngineOpenGL.so", RTLD_LAZY);
         auto Diligent_GetEngineFactoryOpenGL =
                 (Diligent_GetEngineFactoryOpenGL_t) dlsym(handle,
@@ -68,10 +68,44 @@ void main(in  PSInput  PSIn,
 
         ::Diligent::SwapChainDesc SCDesc;
 
-        auto &ctx = MG_EGL::Diligent::DeviceContext::GetInstance();
-
         pFactoryOpenGL->CreateDeviceAndSwapChainGL(
                 EngineCI, &ctx.pDevice, &ctx.pContext, SCDesc, &ctx.pSwapChain);
+    }
+    
+    void LoadDiligentCoreVulkan(NativeWindowType window) {
+        void *handle = dlopen("libGraphicsEngineVk.so", RTLD_LAZY);
+        auto Diligent_GetEngineFactoryVk =
+                (Diligent_GetEngineFactoryVk_t) dlsym(handle,
+                                                          "Diligent_GetEngineFactoryVk");
+
+        auto *pFactoryVk = Diligent_GetEngineFactoryVk();
+        ::Diligent::EngineVkCreateInfo EngineCI;
+
+        ::Diligent::SwapChainDesc SCDesc;
+
+        pFactoryVk->CreateDeviceAndContextsVk(
+                EngineCI, &ctx.pDevice, &ctx.pContext);
+        AndroidNativeWindow nativeWindow{window};
+        pFactoryVk->CreateSwapChainVk(
+                ctx.pDevice, ctx.pContext, SCDesc, nativeWindow, &ctx.pSwapChain);
+    }
+    
+    void LoadDiligentCore(NativeWindowType window) {
+        switch (DILIGENT_BACKEND_TYPE) {
+            case MG_Constants::Backend::BACKEND_DILIGENT_VULKAN:
+                LoadDiligentCoreVulkan(window);
+                break;
+            case MG_Constants::Backend::BACKEND_DILIGENT_OPENGL:
+            default:
+                LoadDiligentCoreOpenGL(window);
+                break;
+        }
+        
+    }
+
+    EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config, NativeWindowType window,
+                                      const EGLint *attrib_list) {
+        LoadDiligentCore(window);
 
         // Pipeline state object encompasses configuration of all GPU stages
 
@@ -205,8 +239,6 @@ void main(in  PSInput  PSIn,
     }
 
     EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw) {
-        auto &ctx = MG_EGL::Diligent::DeviceContext::GetInstance();
-
         // Clear the back buffer
         const float ClearColor[] = {0.350f, 0.350f, 0.350f, 1.0f};
         // Let the engine perform required state transitions
@@ -226,6 +258,7 @@ void main(in  PSInput  PSIn,
         DrawAttribs drawAttrs;
         drawAttrs.NumVertices = 3; // We will render 3 vertices
         ctx.pContext->Draw(drawAttrs);
+        ctx.pContext->Flush();
 
         ctx.pSwapChain->Present();
 

MG/MG_GL/Implementations/EGL/Diligent/EGL_impl.h

@@ -2,22 +2,17 @@
 // Created by Swung 0x48 on 2025-05-18.
 //
 
-#ifndef MOBILEGLUES_EGL_IMPL_H
-#define MOBILEGLUES_EGL_IMPL_H
+#ifndef MOBILEGL_EGL_IMPL_H
+#define MOBILEGL_EGL_IMPL_H
 
-
-#include "../../../../../Includes.h"
+#include "../../../../Includes.h"
+#include "DiligentConfig.h"
 
 #if BACKEND_TYPE == BACKEND_DILIGENT
 
 namespace MG_EGL::Diligent {
     struct DeviceContext {
     public:
-        static inline DeviceContext& GetInstance() {
-            static DeviceContext devctx;
-            return devctx;
-        }
-
         ::Diligent::RefCntAutoPtr<::Diligent::IRenderDevice> pDevice;
         ::Diligent::RefCntAutoPtr<::Diligent::IDeviceContext> pContext;
         ::Diligent::RefCntAutoPtr<::Diligent::ISwapChain> pSwapChain;
@@ -27,6 +22,8 @@ namespace MG_EGL::Diligent {
         int minorVer = 5;
 
     };
+    
+    static struct DeviceContext ctx;
 
     EGLSurface eglCreateWindowSurface(EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint* attrib_list);
     EGLBoolean eglChooseConfig(EGLDisplay dpy, const EGLint* attrib_list, EGLConfig* configs, EGLint config_size, EGLint* num_config);
@@ -59,4 +56,4 @@ MG_EXPORT __eglMustCastToProperFunctionPointerType eglGetProcAddress(const char
 #endif
 
 
-#endif //MOBILEGLUES_EGL_IMPL_H
+#endif //MOBILEGL_EGL_IMPL_H