From 562e84c20aaf8277c76042a40ce9837e86c78d60 Mon Sep 17 00:00:00 2001
From: assiduous <assiduous@diligentgraphics.com>
Date: Mon, 20 Jul 2020 20:49:39 -0700
Subject: Added DILIGENT_NO_HLSL CMake option to disable HLSL support in Vulkan
 and OpenGL backends

---
 Graphics/GraphicsEngineOpenGL/CMakeLists.txt              | 11 ++++++++---
 Graphics/GraphicsEngineOpenGL/src/EngineFactoryOpenGL.cpp | 10 +++++++++-
 2 files changed, 17 insertions(+), 4 deletions(-)

(limited to 'Graphics/GraphicsEngineOpenGL')

diff --git a/Graphics/GraphicsEngineOpenGL/CMakeLists.txt b/Graphics/GraphicsEngineOpenGL/CMakeLists.txt
index 2751bbd5..1072d067 100644
--- a/Graphics/GraphicsEngineOpenGL/CMakeLists.txt
+++ b/Graphics/GraphicsEngineOpenGL/CMakeLists.txt
@@ -154,19 +154,23 @@ endif()
 target_include_directories(Diligent-GraphicsEngineOpenGL-static
 PRIVATE
     include
-    ../HLSL2GLSLConverterLib/include
 )
 
-
 set(PRIVATE_DEPENDENCIES 
     Diligent-BuildSettings
     Diligent-Common
     Diligent-TargetPlatform
     Diligent-GraphicsEngine
     Diligent-GLSLTools
-    Diligent-HLSL2GLSLConverterLib
 )
 
+if(${DILIGENT_NO_HLSL})
+    message("HLSL support is disabled. OpenGL backend will not be able to consume HLSL source.")
+else()
+    target_include_directories(Diligent-GraphicsEngineOpenGL-static PRIVATE ../HLSL2GLSLConverterLib/include)
+    set(PRIVATE_DEPENDENCIES ${PRIVATE_DEPENDENCIES} Diligent-HLSL2GLSLConverterLib)
+endif()
+
 set(PUBLIC_DEPENDENCIES 
     Diligent-GraphicsEngineOpenGLInterface
 )
@@ -244,6 +248,7 @@ PUBLIC
     ${PUBLIC_DEPENDENCIES}
 )
 
+target_compile_definitions(Diligent-GraphicsEngineOpenGL-static PRIVATE DILIGENT_NO_HLSL=$<BOOL:${DILIGENT_NO_HLSL}>)
 target_compile_definitions(Diligent-GraphicsEngineOpenGL-shared PUBLIC ENGINE_DLL=1)
 if(PLATFORM_MACOS)
     # Silence OpenGL deprecation warnings
diff --git a/Graphics/GraphicsEngineOpenGL/src/EngineFactoryOpenGL.cpp b/Graphics/GraphicsEngineOpenGL/src/EngineFactoryOpenGL.cpp
index 88dde5f4..dacd1fe3 100644
--- a/Graphics/GraphicsEngineOpenGL/src/EngineFactoryOpenGL.cpp
+++ b/Graphics/GraphicsEngineOpenGL/src/EngineFactoryOpenGL.cpp
@@ -33,7 +33,11 @@
 #include "RenderDeviceGLImpl.hpp"
 #include "DeviceContextGLImpl.hpp"
 #include "EngineMemory.h"
-#include "HLSL2GLSLConverterObject.hpp"
+
+#if !DILIGENT_NO_HLSL
+#    include "HLSL2GLSLConverterObject.hpp"
+#endif
+
 #include "EngineFactoryBase.hpp"
 
 #if PLATFORM_IOS
@@ -273,8 +277,12 @@ GetEngineFactoryOpenGLType LoadGraphicsEngineOpenGL()
 
 void EngineFactoryOpenGLImpl::CreateHLSL2GLSLConverter(IHLSL2GLSLConverter** ppConverter)
 {
+#if DILIGENT_NO_HLSL
+    LOG_ERROR_MESSAGE("Unable to create HLSL2GLSL converter: HLSL support is disabled.");
+#else
     HLSL2GLSLConverterObject* pConverter(NEW_RC_OBJ(GetRawAllocator(), "HLSL2GLSLConverterObject instance", HLSL2GLSLConverterObject)());
     pConverter->QueryInterface(IID_HLSL2GLSLConverter, reinterpret_cast<IObject**>(ppConverter));
+#endif
 }
 
 #if PLATFORM_ANDROID
-- 
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