Use DX12 by default on Windows

cmake/Common.cmake

@@ -29,4 +29,12 @@ macro(set_engine_properties target)
     if(ENABLE_METAL)
         target_compile_definitions(${target} PUBLIC ENABLE_METAL)
     endif()
+
+    if(ENABLE_WEBGPU)
+        target_compile_definitions(${target} PUBLIC ENABLE_WEBGPU)
+    endif()
+
+    if(ENABLE_DX12)
+        target_compile_definitions(${target} PUBLIC ENABLE_DX12)
+    endif()
 endmacro()

engine/gfx/dx12/include/gfx_dx12.hpp

@@ -4,7 +4,10 @@
 
 class gfx_dx12 : public GFX {
 public:
-    bool initialize() override;
+    bool is_supported() override { return true; }
+    ShaderLanguage accepted_shader_language() override { return ShaderLanguage::HLSL; }
+    GFXContext required_context() override { return GFXContext::DirectX; }
+    bool initialize(const GFXCreateInfo& info) override;
     
-    const char* getName() override;
+    const char* get_name() override;
 };

engine/gfx/dx12/src/gfx_dx12.cpp

@@ -10,10 +10,10 @@ using namespace Microsoft::WRL;
 
 ComPtr<ID3D12Device> g_Device;
 
-bool gfx_dx12::initialize() {
+bool gfx_dx12::initialize(const GFXCreateInfo& info) {
 	return true;
 }
 
-const char* gfx_dx12::getName() {
+const char* gfx_dx12::get_name() {
     return "DX12";
 }

platforms/sdl/CMakeLists.txt

@@ -12,6 +12,10 @@ if(ENABLE_VULKAN)
     set(EXTRA_SRC ${CMAKE_CURRENT_SOURCE_DIR}/sdl_vulkan.cpp ${EXTRA_SRC})
 endif()
 
+if(ENABLE_DX12)
+    set(EXTRA_LIBRARIES GFXDX12 ${EXTRA_LIBRARIES})
+endif()
+
 if(TARGET SDL2::SDL2)
     set(EXTRA_LIBRARIES SDL2::SDL2 ${EXTRA_LIBRARIES})
 endif()

platforms/sdl/main.cpp.in

@@ -8,6 +8,10 @@
 #include <SDL.h>
 #include <SDL_vulkan.h>
 
+#ifdef ENABLE_DX12
+#include "gfx_dx12.hpp"
+#endif
+
 #ifdef ENABLE_VULKAN
 #include "gfx_vulkan.hpp"
 #endif
@@ -319,6 +323,11 @@ void platform::end_text_input() {
 }
 
 bool platform::supports_context(GFXContext context) {
+#ifdef ENABLE_DX12
+    if(context == GFXContext::DirectX)
+        return true;
+#endif
+
 #ifdef ENABLE_VULKAN
     if(context == GFXContext::Vulkan)
         return true;
@@ -397,7 +406,7 @@ template<class GFXBackend>
 void try_initialize() {
     if(gfx_interface == nullptr) {
         auto backend = new GFXBackend();
-        const bool supported = backend->is_supported();
+        const bool supported = backend->is_supported() && platform::supports_context(backend->required_context());
         if(!supported) {
             prism::log("Failed to initialize GFX backend... trying next...");
         } else {
@@ -411,6 +420,10 @@ int main(int argc, char* argv[]) {
     SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER);
 
     // determine gfx context at the beginning
+#ifdef ENABLE_DX12
+   try_initialize<gfx_dx12>();
+#endif
+
 #ifdef ENABLE_METAL
     try_initialize<GFXMetal>();
 #endif