From c240ca4eaf547cdf5c30fbb8ca642797eabae82c Mon Sep 17 00:00:00 2001
From: jules <jules@rawmaterialsoftware.com>
Date: Thu, 26 Mar 2015 18:12:07 +0000
Subject: [PATCH] Added a method OpenGLContext::setImageCacheSize to provide
 explicit control over the amount of GPU space that is used for the internal
 image cache.

---
 modules/juce_opengl/opengl/juce_OpenGLContext.cpp         | 4 ++++
 modules/juce_opengl/opengl/juce_OpenGLContext.h           | 7 +++++++
 modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp | 4 ++--
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/modules/juce_opengl/opengl/juce_OpenGLContext.cpp b/modules/juce_opengl/opengl/juce_OpenGLContext.cpp
index 2c55c85911..36937b8669 100644
--- a/modules/juce_opengl/opengl/juce_OpenGLContext.cpp
+++ b/modules/juce_opengl/opengl/juce_OpenGLContext.cpp
@@ -596,6 +596,7 @@ private:
 OpenGLContext::OpenGLContext()
     : nativeContext (nullptr), renderer (nullptr), currentRenderScale (1.0),
       contextToShareWith (nullptr), versionRequired (OpenGLContext::defaultGLVersion),
+      imageCacheMaxSize (8 * 1024 * 1024),
       renderComponents (true), useMultisampling (false), continuousRepaint (false)
 {
 }
@@ -812,6 +813,9 @@ void OpenGLContext::setAssociatedObject (const char* name, ReferenceCountedObjec
     }
 }
 
+void OpenGLContext::setImageCacheSize (size_t newSize) noexcept     { imageCacheMaxSize = newSize; }
+size_t OpenGLContext::getImageCacheSize() const noexcept            { return imageCacheMaxSize; }
+
 void OpenGLContext::copyTexture (const Rectangle<int>& targetClipArea,
                                  const Rectangle<int>& anchorPosAndTextureSize,
                                  const int contextWidth, const int contextHeight,
diff --git a/modules/juce_opengl/opengl/juce_OpenGLContext.h b/modules/juce_opengl/opengl/juce_OpenGLContext.h
index c72e47c00b..7aee2b36ea 100644
--- a/modules/juce_opengl/opengl/juce_OpenGLContext.h
+++ b/modules/juce_opengl/opengl/juce_OpenGLContext.h
@@ -262,6 +262,12 @@ public:
                       bool textureOriginIsBottomLeft);
 
 
+    /** Changes the amount of GPU memory that the internal cache for Images is allowed to use. */
+    void setImageCacheSize (size_t cacheSizeBytes) noexcept;
+
+    /** Returns the amount of GPU memory that the internal cache for Images is allowed to use. */
+    size_t getImageCacheSize() const noexcept;
+
     //==============================================================================
    #ifndef DOXYGEN
     class NativeContext;
@@ -277,6 +283,7 @@ private:
     OpenGLPixelFormat pixelFormat;
     void* contextToShareWith;
     OpenGLVersion versionRequired;
+    size_t imageCacheMaxSize;
     bool renderComponents, useMultisampling, continuousRepaint;
 
     CachedImage* getCachedImage() const noexcept;
diff --git a/modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp b/modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp
index 659d6fef7d..6aa593679d 100644
--- a/modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp
+++ b/modules/juce_opengl/opengl/juce_OpenGLGraphicsContext.cpp
@@ -38,8 +38,8 @@ struct TextureInfo
 struct CachedImageList  : public ReferenceCountedObject,
                           private ImagePixelData::Listener
 {
-    CachedImageList (OpenGLContext& c, size_t totalCacheSizeInPixels = 8 * 1024 * 1024) noexcept
-        : context (c), totalSize (0), maxCacheSize (totalCacheSizeInPixels) {}
+    CachedImageList (OpenGLContext& c) noexcept
+        : context (c), totalSize (0), maxCacheSize (c.getImageCacheSize()) {}
 
     static CachedImageList* get (OpenGLContext& c)
     {