Fixes for D3D12 on Linux.

src/dxgi.cpp

@@ -10,7 +10,7 @@
 #include "dxgi.h"
 #include "renderer_d3d.h"
 
-#if !BX_PLATFORM_WINDOWS
+#if !BX_PLATFORM_WINDOWS && !BX_PLATFORM_LINUX
 #	include <inspectable.h>
 #	if BX_PLATFORM_WINRT
 #		include <windows.ui.xaml.media.dxinterop.h>

src/renderer_d3d12.cpp

@@ -8,7 +8,7 @@
 #if BGFX_CONFIG_RENDERER_DIRECT3D12
 #	include "renderer_d3d12.h"
 
-#if !BX_PLATFORM_WINDOWS
+#if !BX_PLATFORM_WINDOWS && !BX_PLATFORM_LINUX
 #	include <inspectable.h>
 #	if BX_PLATFORM_WINRT
 #		include <windows.ui.xaml.media.dxinterop.h>

src/renderer_d3d12.h

@@ -6,10 +6,10 @@
 #ifndef BGFX_RENDERER_D3D12_H_HEADER_GUARD
 #define BGFX_RENDERER_D3D12_H_HEADER_GUARD
 
-#define USE_D3D12_DYNAMIC_LIB BX_PLATFORM_WINDOWS
+#define USE_D3D12_DYNAMIC_LIB (BX_PLATFORM_WINDOWS || BX_PLATFORM_LINUX)
 
 #include <sal.h>
-#if BX_PLATFORM_WINDOWS || BX_PLATFORM_WINRT
+#if BX_PLATFORM_WINDOWS || BX_PLATFORM_WINRT || BX_PLATFORM_LINUX
 #   include <d3d12.h>
 #else
 #   if !BGFX_CONFIG_DEBUG