Fixed few iOS issues with file system & number of texture units

Author: TheMostDiligent

Graphics/GraphicsEngineOpenGL/src/GLContextState.cpp

@@ -45,7 +45,7 @@ namespace Diligent
             m_Caps.m_iMaxCombinedTexUnits = 0;
             glGetIntegerv( GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &m_Caps.m_iMaxCombinedTexUnits );
             CHECK_GL_ERROR( "Failed to get max combined tex image units count" );
-            m_Caps.m_iMaxCombinedTexUnits = std::max( m_Caps.m_iMaxCombinedTexUnits, 80 ); // Must be at least 80 in GL4.2
+            VERIFY_EXPR(m_Caps.m_iMaxCombinedTexUnits > 0);
         }
 
         m_BoundTextures.reserve( m_Caps.m_iMaxCombinedTexUnits );

Platforms/Basic/CMakeLists.txt

@@ -16,7 +16,7 @@ set(INTERFACE
 	interface/Errors.h
 )
 
-if(PLATFORM_LINUX OR PLATFORM_WIN32 OR PLATFORM_MACOS)
+if(PLATFORM_LINUX OR PLATFORM_WIN32 OR PLATFORM_MACOS OR PLATFORM_IOS)
 	list(APPEND SOURCE src/StandardFile.cpp)
 	list(APPEND INTERFACE interface/StandardFile.h)
 endif()
@@ -40,4 +40,4 @@ source_group("interface" FILES ${INTERFACE})
 
 set_target_properties(BasicPlatform PROPERTIES
 	FOLDER Core/Platforms
-)
+)

Platforms/Basic/src/StandardFile.cpp

@@ -29,7 +29,7 @@ StandardFile::StandardFile(const FileOpenAttribs &OpenAttribs, Diligent::Char Sl
     BasicFile(OpenAttribs, SlashSymbol),
     m_pFile(nullptr)
 {
-#if defined(PLATFORM_LINUX) || defined(PLATFORM_MACOS)
+#if defined(PLATFORM_LINUX) || defined(PLATFORM_MACOS) || defined(PLATFORM_IOS)
     auto OpenModeStr = GetOpenModeStr();
     m_pFile = fopen(m_OpenAttribs.strFilePath, OpenModeStr.c_str());
     if (m_pFile == nullptr)