tdf#93814: Added support for caching shader program binaries.

Change-Id: I21c844b47282f6b3eec443933a86421a074e24df
Reviewed-on: https://gerrit.libreoffice.org/18555Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

include/vcl/opengl/OpenGLContext.hxx

@@ -55,10 +55,13 @@ class NSOpenGLView;
 #include <vcl/window.hxx>
 #include <tools/gen.hxx>
 #include <vcl/syschild.hxx>
+#include <rtl/crc.h>
 #include <rtl/ref.hxx>
 
 #include <map>
+#include <memory>
 #include <set>
+#include <unordered_map>
 
 class OpenGLFramebuffer;
 class OpenGLProgram;
@@ -271,15 +274,16 @@ private:
     OpenGLFramebuffer* mpFirstFramebuffer;
     OpenGLFramebuffer* mpLastFramebuffer;
 
-    struct ProgramKey
+    struct ProgramHash
     {
-        ProgramKey( const OUString& vertexShader, const OUString& fragmentShader, const OString& preamble );
-        bool operator< ( const ProgramKey& other ) const;
-        OUString vertexShader;
-        OUString fragmentShader;
-        OString preamble;
+        size_t operator()( const rtl::OString& aDigest ) const
+        {
+            return (size_t)( rtl_crc32( 0, aDigest.getStr(), aDigest.getLength() ) );
+        }
     };
-    std::map<ProgramKey, std::shared_ptr<OpenGLProgram> > maPrograms;
+
+    typedef std::unordered_map< rtl::OString, std::shared_ptr<OpenGLProgram>, ProgramHash > ProgramCollection;
+    ProgramCollection maPrograms;
     OpenGLProgram* mpCurrentProgram;
 #ifdef DBG_UTIL
     std::set<SalGraphicsImpl*> maParents;

include/vcl/opengl/OpenGLHelper.hxx

@@ -39,7 +39,11 @@ struct VCL_DLLPUBLIC OpenGLHelper
 {
     OpenGLHelper() SAL_DELETED_FUNCTION; // Should not be instantiated
 
-    static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OString& preamble = "" );
+public:
+
+    static rtl::OString GetDigest(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const rtl::OString& preamble = "" );
+
+    static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const rtl::OString& preamble = "", const rtl::OString& rDigest = "" );
 
     /**
      * The caller is responsible for allocate the memory for the RGBA buffer, before call

vcl/inc/opengl/program.hxx

@@ -50,7 +50,8 @@ public:
     OpenGLProgram();
     ~OpenGLProgram();
 
-    bool Load( const OUString& rVertexShader, const OUString& rFragmentShader, const OString& preamble = "" );
+    bool Load( const OUString& rVertexShader, const OUString& rFragmentShader,
+               const rtl::OString& preamble = "", const rtl::OString& rDigest = "" );
     bool Use();
     bool Clean();
 

vcl/inc/opengl/win/WinDeviceInfo.hxx

@@ -61,6 +61,7 @@ bool ParseDriverVersion(const OUString& rString, uint64_t& rVersion);
 
 struct DriverInfo
 {
+
     DriverInfo(OperatingSystem os, const OUString& vendor, VersionComparisonOp op,
             uint64_t driverVersion, bool bWhiteListed = false, const char *suggestedVersion = nullptr);
 
@@ -159,6 +160,51 @@ public:
     virtual ~WinOpenGLDeviceInfo();
 
     virtual bool isDeviceBlocked();
+
+    const OUString& GetDriverVersion() const
+    {
+        return maDriverVersion;
+    }
+
+    const OUString& GetDriverDate() const
+    {
+        return maDriverDate;
+    }
+
+    const OUString& GetDeviceID() const
+    {
+        return maDeviceID;
+    }
+
+    const OUString& GetAdapterVendorID() const
+    {
+        return maAdapterVendorID;
+    }
+
+    const OUString& GetAdapterDeviceID() const
+    {
+        return maAdapterDeviceID;
+    }
+
+    const OUString& GetAdapterSubsysID() const
+    {
+        return maAdapterSubsysID;
+    }
+    const OUString& GetDeviceKey() const
+    {
+        return maDeviceKey;
+    }
+
+    const OUString& GetDeviceString() const
+    {
+        return maDeviceString;
+    }
+
+    sal_uInt32 GetWindowsVersion() const
+    {
+        return mnWindowsVersion;
+    }
+
 };
 
 #endif

vcl/inc/opengl/x11/X11DeviceInfo.hxx

@@ -44,6 +44,32 @@ public:
     virtual ~X11OpenGLDeviceInfo();
 
     virtual bool isDeviceBlocked() SAL_OVERRIDE;
+
+    const OString& GetVendor() const
+    {
+        return maVendor;
+    }
+
+    const OString& GetRenderer() const
+    {
+        return maRenderer;
+    }
+
+    const OString& GetVersion() const
+    {
+        return maVersion;
+    }
+
+    const OString& GetOS() const
+    {
+        return maOS;
+    }
+
+    const OString& GetOSRelease() const
+    {
+        return maOSRelease;
+    }
+
 };
 
 #endif

vcl/opengl/program.cxx

@@ -36,9 +36,12 @@ OpenGLProgram::~OpenGLProgram()
         glDeleteProgram( mnId );
 }
 
-bool OpenGLProgram::Load( const OUString& rVertexShader, const OUString& rFragmentShader, const OString& preamble )
+bool OpenGLProgram::Load( const OUString& rVertexShader,
+                          const OUString& rFragmentShader,
+                          const rtl::OString& preamble,
+                          const rtl::OString& rDigest )
 {
-    mnId = OpenGLHelper::LoadShaders( rVertexShader, rFragmentShader, preamble );
+    mnId = OpenGLHelper::LoadShaders( rVertexShader, rFragmentShader, preamble, rDigest );
     return ( mnId != 0 );
 }
 

vcl/source/opengl/OpenGLContext.cxx

@@ -1634,22 +1634,24 @@ void OpenGLContext::ReleaseFramebuffers()
     BindFramebuffer( NULL );
 }
 
-OpenGLProgram* OpenGLContext::GetProgram( const OUString& rVertexShader, const OUString& rFragmentShader, const OString& preamble )
+OpenGLProgram* OpenGLContext::GetProgram( const OUString& rVertexShader, const OUString& rFragmentShader, const rtl::OString& preamble )
 {
     OpenGLZone aZone;
 
-    ProgramKey aKey( rVertexShader, rFragmentShader, preamble );
+    rtl::OString aKey = OpenGLHelper::GetDigest( rVertexShader, rFragmentShader, preamble );
 
-    std::map< ProgramKey, std::shared_ptr<OpenGLProgram> >::iterator
-        it = maPrograms.find( aKey );
-    if( it != maPrograms.end() )
-        return it->second.get();
+    if( !aKey.isEmpty() )
+    {
+        ProgramCollection::iterator it = maPrograms.find( aKey );
+        if( it != maPrograms.end() )
+            return it->second.get();
+    }
 
     std::shared_ptr<OpenGLProgram> pProgram = std::make_shared<OpenGLProgram>();
-    if( !pProgram->Load( rVertexShader, rFragmentShader, preamble ) )
+    if( !pProgram->Load( rVertexShader, rFragmentShader, preamble, aKey ) )
         return NULL;
 
-    maPrograms.insert(std::pair<ProgramKey, std::shared_ptr<OpenGLProgram> >(aKey, pProgram));
+    maPrograms.insert(std::make_pair(aKey, pProgram));
     return pProgram.get();
 }
 
@@ -1675,20 +1677,4 @@ OpenGLProgram* OpenGLContext::UseProgram( const OUString& rVertexShader, const O
     return mpCurrentProgram;
 }
 
-inline
-OpenGLContext::ProgramKey::ProgramKey( const OUString& v, const OUString& f, const OString& p )
-: vertexShader( v ), fragmentShader( f ), preamble( p )
-{
-}
-
-inline
-bool OpenGLContext::ProgramKey::operator< ( const ProgramKey& other ) const
-{
-    if( vertexShader != other.vertexShader )
-        return vertexShader < other.vertexShader;
-    if( fragmentShader != other.fragmentShader )
-        return fragmentShader < other.fragmentShader;
-    return preamble < other.preamble;
-}
-
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */