From 0628932fef349d217c0a50a192e7ee6a955994b7 Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Thu, 26 Sep 2019 11:26:51 +0200
Subject: Move cache key calculation to QOpenGLProgramBinaryCache
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This class will likely be used by the OpenGL backend of QRhi as well.
Therefore, we need to make it more self-contained and independent.

Change-Id: If046ed41e25c70cc9abb45219b451f9179feaa1c
Reviewed-by: Christian Strømme <christian.stromme@qt.io>
---
 src/gui/opengl/qopenglprogrambinarycache.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/gui/opengl/qopenglprogrambinarycache.cpp')

diff --git a/src/gui/opengl/qopenglprogrambinarycache.cpp b/src/gui/opengl/qopenglprogrambinarycache.cpp
index 54160e1240..1495471457 100644
--- a/src/gui/opengl/qopenglprogrambinarycache.cpp
+++ b/src/gui/opengl/qopenglprogrambinarycache.cpp
@@ -45,6 +45,7 @@
 #include <QDir>
 #include <QSaveFile>
 #include <QLoggingCategory>
+#include <QCryptographicHash>
 
 #ifdef Q_OS_UNIX
 #include <sys/mman.h>
@@ -94,6 +95,15 @@ GLEnvInfo::GLEnvInfo()
         glversion = QByteArray(version);
 }
 
+QByteArray QOpenGLProgramBinaryCache::ProgramDesc::cacheKey() const
+{
+    QCryptographicHash keyBuilder(QCryptographicHash::Sha1);
+    for (const QOpenGLProgramBinaryCache::ShaderDesc &shader : shaders)
+        keyBuilder.addData(shader.source);
+
+    return keyBuilder.result().toHex();
+}
+
 static inline bool qt_ensureWritableDir(const QString &name)
 {
     QDir::root().mkpath(name);
-- 
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