Remove lookup3 gamma code

Also clean up gamma / glyph cache properties

Change-Id: I75b1ac0cb55638bf787ffd3cf457483ae314f03b
diff --git a/libs/hwui/GammaFontRenderer.h b/libs/hwui/GammaFontRenderer.h
index 03f2510..146d385 100644
--- a/libs/hwui/GammaFontRenderer.h
+++ b/libs/hwui/GammaFontRenderer.h
@@ -17,122 +17,44 @@
 #ifndef ANDROID_HWUI_GAMMA_FONT_RENDERER_H
 #define ANDROID_HWUI_GAMMA_FONT_RENDERER_H
 
-#include <SkPaint.h>
-
 #include "FontRenderer.h"
 #include "Program.h"
 
+#include <SkPaint.h>
+
 namespace android {
 namespace uirenderer {
 
 class GammaFontRenderer {
 public:
-    virtual ~GammaFontRenderer();
-
-    virtual void clear() = 0;
-    virtual void flush() = 0;
-
-    virtual FontRenderer& getFontRenderer(const SkPaint* paint) = 0;
-
-    virtual uint32_t getFontRendererCount() const = 0;
-    virtual uint32_t getFontRendererSize(uint32_t fontRenderer, GLenum format) const = 0;
-
-    virtual void endPrecaching() = 0;
-
-    static GammaFontRenderer* createRenderer();
-
-protected:
     GammaFontRenderer();
 
-    int mBlackThreshold;
-    int mWhiteThreshold;
-
-    float mGamma;
-};
-
-class LookupGammaFontRenderer: public GammaFontRenderer {
-public:
-    ~LookupGammaFontRenderer() {
-        delete mRenderer;
+    void clear() {
+        mRenderer.release();
     }
 
-    void clear() override {
-        delete mRenderer;
-        mRenderer = nullptr;
-    }
-
-    void flush() override {
+    void flush() {
         if (mRenderer) {
             mRenderer->flushLargeCaches();
         }
     }
 
-    FontRenderer& getFontRenderer(const SkPaint* paint) override {
+    FontRenderer& getFontRenderer() {
         if (!mRenderer) {
-            mRenderer = new FontRenderer;
-            mRenderer->setGammaTable(&mGammaTable[0]);
+            mRenderer.reset(new FontRenderer(&mGammaTable[0]));
         }
         return *mRenderer;
     }
 
-    uint32_t getFontRendererCount() const override {
-        return 1;
-    }
-
-    uint32_t getFontRendererSize(uint32_t fontRenderer, GLenum format) const override {
+    uint32_t getFontRendererSize(GLenum format) const {
         return mRenderer ? mRenderer->getCacheSize(format) : 0;
     }
 
-    void endPrecaching() override;
+    void endPrecaching();
 
 private:
-    LookupGammaFontRenderer();
-
-    FontRenderer* mRenderer;
+    std::unique_ptr<FontRenderer> mRenderer;
     uint8_t mGammaTable[256];
-
-    friend class GammaFontRenderer;
-};
-
-class Lookup3GammaFontRenderer: public GammaFontRenderer {
-public:
-    void clear() override;
-    void flush() override;
-
-    FontRenderer& getFontRenderer(const SkPaint* paint) override;
-
-    uint32_t getFontRendererCount() const override {
-        return kGammaCount;
-    }
-
-    uint32_t getFontRendererSize(uint32_t fontRenderer, GLenum format) const override {
-        if (fontRenderer >= kGammaCount) return 0;
-
-        if (!mRenderers[fontRenderer]) return 0;
-
-        return mRenderers[fontRenderer]->getCacheSize(format);
-    }
-
-    void endPrecaching() override;
-
-private:
-    Lookup3GammaFontRenderer();
-
-    enum Gamma {
-        kGammaDefault = 0,
-        kGammaBlack = 1,
-        kGammaWhite = 2,
-        kGammaCount = 3
-    };
-
-    FontRenderer* getRenderer(Gamma gamma);
-
-    uint32_t mRenderersUsageCount[kGammaCount];
-    std::unique_ptr<FontRenderer> mRenderers[kGammaCount];
-
-    uint8_t mGammaTable[256 * kGammaCount];
-
-    friend class GammaFontRenderer;
 };
 
 }; // namespace uirenderer