SDL: Added additional check for HAVE_D3D12_H and missing SDL_VIDEO_RENDER_D3D12 in SDL_config.h.cmake

SDL Commits
1 
From b9c2ad8395ada3d6eb1fd0e9ef04c7c0ce3b5990 Mon Sep 17 00:00:00 2001
From: chalonverse <[EMAIL REDACTED]>
Date: Tue, 7 Jun 2022 22:19:58 -0700
Subject: [PATCH] Added additional check for HAVE_D3D12_H and missing
 SDL_VIDEO_RENDER_D3D12 in SDL_config.h.cmake

---
 CMakeLists.txt             | 2 ++
 configure                  | 2 ++
 configure.ac               | 2 ++
 include/SDL_config.h.cmake | 1 +
 4 files changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41789664236..34f308c5eab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1594,6 +1594,8 @@ elseif(WINDOWS)
     check_c_source_compiles("
       #include <winsdkver.h>
       #include <sdkddkver.h>
+      #include <d3d12.h>
+      ID3D12Device5 *device;
       #if WDK_NTDDI_VERSION > 0x0A000008
       int main(int argc, char **argv) { return 0; }
       #endif" HAVE_D3D12_H)
diff --git a/configure b/configure
index 3f51589ff22..cd6346cc78e 100755
--- a/configure
+++ b/configure
@@ -25090,6 +25090,8 @@ $as_echo_n "checking for d3d12 Windows SDK version... " >&6; }
 
 #include <winsdkver.h>
 #include <sdkddkver.h>
+#include <d3d12.h>
+ID3D12Device5 *device;
 #if WDK_NTDDI_VERSION <= 0x0A000008
 asdf
 #endif
diff --git a/configure.ac b/configure.ac
index 9a9248b483a..04f8a04cdbc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3268,6 +3268,8 @@ CheckDIRECTX()
         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <winsdkver.h>
 #include <sdkddkver.h>
+#include <d3d12.h>
+ID3D12Device5 *device;
 #if WDK_NTDDI_VERSION <= 0x0A000008
 asdf
 #endif
diff --git a/include/SDL_config.h.cmake b/include/SDL_config.h.cmake
index b6b58399296..3f17d13273b 100644
--- a/include/SDL_config.h.cmake
+++ b/include/SDL_config.h.cmake
@@ -440,6 +440,7 @@
 
 #cmakedefine SDL_VIDEO_RENDER_D3D @SDL_VIDEO_RENDER_D3D@
 #cmakedefine SDL_VIDEO_RENDER_D3D11 @SDL_VIDEO_RENDER_D3D11@
+#cmakedefine SDL_VIDEO_RENDER_D3D12 @SDL_VIDEO_RENDER_D3D12@
 #cmakedefine SDL_VIDEO_RENDER_OGL @SDL_VIDEO_RENDER_OGL@
 #cmakedefine SDL_VIDEO_RENDER_OGL_ES @SDL_VIDEO_RENDER_OGL_ES@
 #cmakedefine SDL_VIDEO_RENDER_OGL_ES2 @SDL_VIDEO_RENDER_OGL_ES2@