From 3f73cfdf5c721b250910cd220e54d53e3311840b Mon Sep 17 00:00:00 2001
From: Marco Cecchetti <marco.cecchetti@collabora.com>
Date: Sun, 13 Sep 2015 12:15:13 +0200
Subject: tdf#93814: Added support for caching shader program binaries.

Change-Id: I21c844b47282f6b3eec443933a86421a074e24df
---
 include/vcl/opengl/OpenGLContext.hxx | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

(limited to 'include/vcl/opengl/OpenGLContext.hxx')

diff --git a/include/vcl/opengl/OpenGLContext.hxx b/include/vcl/opengl/OpenGLContext.hxx
index ecc503829051..b2aaa173ea3a 100644
--- a/include/vcl/opengl/OpenGLContext.hxx
+++ b/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;
-- 
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