diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 411c133..ce8364e 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -58,6 +58,7 @@
 		external/skia/include/utils
 
 	LOCAL_CFLAGS += -DUSE_OPENGL_RENDERER -DEGL_EGLEXT_PROTOTYPES -DGL_GLEXT_PROTOTYPES
+	LOCAL_CFLAGS += -Wno-unused-parameter
 	LOCAL_MODULE_CLASS := SHARED_LIBRARIES
 	LOCAL_SHARED_LIBRARIES := liblog libcutils libutils libEGL libGLESv2 libskia libui
 	LOCAL_MODULE := libhwui
diff --git a/libs/hwui/GradientCache.cpp b/libs/hwui/GradientCache.cpp
index 0916942..ffd1e8c 100644
--- a/libs/hwui/GradientCache.cpp
+++ b/libs/hwui/GradientCache.cpp
@@ -115,7 +115,7 @@
 // Callbacks
 ///////////////////////////////////////////////////////////////////////////////
 
-void GradientCache::operator()(GradientCacheEntry& shader, Texture*& texture) {
+void GradientCache::operator()(GradientCacheEntry&, Texture*& texture) {
     if (texture) {
         const uint32_t size = texture->width * texture->height * bytesPerPixel();
         mSize -= size;
@@ -185,7 +185,7 @@
         mCache.removeOldest();
     }
 
-    generateTexture(colors, positions, count, texture);
+    generateTexture(colors, positions, texture);
 
     mSize += size;
     mCache.put(gradient, texture);
@@ -238,8 +238,7 @@
     dst += 4 * sizeof(float);
 }
 
-void GradientCache::generateTexture(uint32_t* colors, float* positions,
-        int count, Texture* texture) {
+void GradientCache::generateTexture(uint32_t* colors, float* positions, Texture* texture) {
     const uint32_t width = texture->width;
     const GLsizei rowBytes = width * bytesPerPixel();
     uint8_t pixels[rowBytes * texture->height];
diff --git a/libs/hwui/GradientCache.h b/libs/hwui/GradientCache.h
index 43934d9..6a783b1 100644
--- a/libs/hwui/GradientCache.h
+++ b/libs/hwui/GradientCache.h
@@ -151,7 +151,7 @@
     Texture* addLinearGradient(GradientCacheEntry& gradient,
             uint32_t* colors, float* positions, int count);
 
-    void generateTexture(uint32_t* colors, float* positions, int count, Texture* texture);
+    void generateTexture(uint32_t* colors, float* positions, Texture* texture);
 
     struct GradientInfo {
         uint32_t width;
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 11e2d33..29030d2 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -779,11 +779,10 @@
 
 int OpenGLRenderer::saveLayer(float left, float top, float right, float bottom,
         int alpha, SkXfermode::Mode mode, int flags) {
-    const GLuint previousFbo = mSnapshot->fbo;
     const int count = saveSnapshot(flags);
 
     if (!mSnapshot->isIgnored()) {
-        createLayer(left, top, right, bottom, alpha, mode, flags, previousFbo);
+        createLayer(left, top, right, bottom, alpha, mode, flags);
     }
 
     return count;
@@ -835,7 +834,6 @@
 
 int OpenGLRenderer::saveLayerDeferred(float left, float top, float right, float bottom,
         int alpha, SkXfermode::Mode mode, int flags) {
-    const GLuint previousFbo = mSnapshot->fbo;
     const int count = saveSnapshot(flags);
 
     if (!mSnapshot->isIgnored() && (flags & SkCanvas::kClipToLayer_SaveFlag)) {
@@ -911,7 +909,7 @@
  *     something actually gets drawn are the layers regions cleared.
  */
 bool OpenGLRenderer::createLayer(float left, float top, float right, float bottom,
-        int alpha, SkXfermode::Mode mode, int flags, GLuint previousFbo) {
+        int alpha, SkXfermode::Mode mode, int flags) {
     LAYER_LOGD("Requesting layer %.2fx%.2f", right - left, bottom - top);
     LAYER_LOGD("Layer cache size = %d", mCaches.layerCache.getSize());
 
@@ -948,7 +946,7 @@
 
     startMark("SaveLayer");
     if (fboLayer) {
-        return createFboLayer(layer, bounds, clip, previousFbo);
+        return createFboLayer(layer, bounds, clip);
     } else {
         // Copy the framebuffer into the layer
         layer->bindTexture();
@@ -974,7 +972,7 @@
     return true;
 }
 
-bool OpenGLRenderer::createFboLayer(Layer* layer, Rect& bounds, Rect& clip, GLuint previousFbo) {
+bool OpenGLRenderer::createFboLayer(Layer* layer, Rect& bounds, Rect& clip) {
     layer->clipRect.set(clip);
     layer->setFbo(mCaches.fboCache.get());
 
@@ -1268,15 +1266,15 @@
         }
 
 #if DEBUG_LAYERS_AS_REGIONS
-        drawRegionRects(layer->region);
+        drawRegionRectsDebug(layer->region);
 #endif
 
         layer->region.clear();
     }
 }
 
-void OpenGLRenderer::drawRegionRects(const Region& region) {
 #if DEBUG_LAYERS_AS_REGIONS
+void OpenGLRenderer::drawRegionRectsDebug(const Region& region) {
     size_t count;
     const android::Rect* rects = region.getArray(&count);
 
@@ -1298,8 +1296,8 @@
         drawColorRect(r.left, r.top, r.right, r.bottom, colors[offset + (i & 0x1)],
                 SkXfermode::kSrcOver_Mode);
     }
-#endif
 }
+#endif
 
 void OpenGLRenderer::drawRegionRects(const SkRegion& region, int color,
         SkXfermode::Mode mode, bool dirty) {
@@ -1792,7 +1790,7 @@
     mColorG = mColorA * ((color >>  8) & 0xFF) / 255.0f;
     mColorB = mColorA * ((color      ) & 0xFF) / 255.0f;
     mColorSet = true;
-    mSetShaderColor = mDescription.setColor(mColorR, mColorG, mColorB, mColorA);
+    mSetShaderColor = mDescription.setColorModulate(mColorA);
 }
 
 void OpenGLRenderer::setupDrawAlpha8Color(int color, int alpha) {
@@ -1801,7 +1799,7 @@
     mColorG = mColorA * ((color >>  8) & 0xFF) / 255.0f;
     mColorB = mColorA * ((color      ) & 0xFF) / 255.0f;
     mColorSet = true;
-    mSetShaderColor = mDescription.setAlpha8Color(mColorR, mColorG, mColorB, mColorA);
+    mSetShaderColor = mDescription.setAlpha8ColorModulate(mColorR, mColorG, mColorB, mColorA);
 }
 
 void OpenGLRenderer::setupDrawTextGamma(const SkPaint* paint) {
@@ -1814,7 +1812,7 @@
     mColorG = g;
     mColorB = b;
     mColorSet = true;
-    mSetShaderColor = mDescription.setColor(r, g, b, a);
+    mSetShaderColor = mDescription.setColorModulate(a);
 }
 
 void OpenGLRenderer::setupDrawShader() {
@@ -2998,7 +2996,7 @@
         dirtyLayerUnchecked(layerBounds, getRegion());
     }
 
-    drawTextDecorations(text, bytesCount, totalAdvance, oldX, oldY, paint);
+    drawTextDecorations(totalAdvance, oldX, oldY, paint);
 
     return DrawGlInfo::kStatusDrew;
 }
@@ -3132,7 +3130,7 @@
             }
 
 #if DEBUG_LAYERS_AS_REGIONS
-            drawRegionRects(layer->region);
+            drawRegionRectsDebug(layer->region);
 #endif
         }
 
@@ -3272,8 +3270,7 @@
 #define kStdUnderline_Offset    (1.0f / 9.0f)
 #define kStdUnderline_Thickness (1.0f / 18.0f)
 
-void OpenGLRenderer::drawTextDecorations(const char* text, int bytesCount, float underlineWidth,
-        float x, float y, SkPaint* paint) {
+void OpenGLRenderer::drawTextDecorations(float underlineWidth, float x, float y, SkPaint* paint) {
     // Handle underline and strike-through
     uint32_t flags = paint->getFlags();
     if (flags & (SkPaint::kUnderlineText_Flag | SkPaint::kStrikeThruText_Flag)) {
diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
index 9afb7ad..6e9c747 100644
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -654,12 +654,11 @@
      * @param alpha The translucency of the layer
      * @param mode The blending mode of the layer
      * @param flags The layer save flags
-     * @param previousFbo The name of the current framebuffer
      *
      * @return True if the layer was successfully created, false otherwise
      */
     bool createLayer(float left, float top, float right, float bottom,
-            int alpha, SkXfermode::Mode mode, int flags, GLuint previousFbo);
+            int alpha, SkXfermode::Mode mode, int flags);
 
     /**
      * Creates a new layer stored in the specified snapshot as an FBO.
@@ -667,9 +666,8 @@
      * @param layer The layer to store as an FBO
      * @param snapshot The snapshot associated with the new layer
      * @param bounds The bounds of the layer
-     * @param previousFbo The name of the current framebuffer
      */
-    bool createFboLayer(Layer* layer, Rect& bounds, Rect& clip, GLuint previousFbo);
+    bool createFboLayer(Layer* layer, Rect& bounds, Rect& clip);
 
     /**
      * Compose the specified layer as a region.
@@ -868,8 +866,7 @@
      * @param y The y coordinate where the text will be drawn
      * @param paint The paint to draw the text with
      */
-    void drawTextDecorations(const char* text, int bytesCount, float totalAdvance,
-            float x, float y, SkPaint* paint);
+    void drawTextDecorations(float totalAdvance, float x, float y, SkPaint* paint);
 
    /**
      * Draws shadow layer on text (with optional positions).
@@ -1004,11 +1001,13 @@
     void updateLayers();
     void flushLayers();
 
+#if DEBUG_LAYERS_AS_REGIONS
     /**
      * Renders the specified region as a series of rectangles. This method
      * is used for debugging only.
      */
-    void drawRegionRects(const Region& region);
+    void drawRegionRectsDebug(const Region& region);
+#endif
 
     /**
      * Renders the specified region as a series of rectangles. The region
diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index 4f94afc..bc0f211 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -207,7 +207,7 @@
      * the fragment shader. When this method returns true, the program should
      * be provided with a modulation color.
      */
-    bool setColor(const float r, const float g, const float b, const float a) {
+    bool setColorModulate(const float a) {
         modulate = a < COLOR_COMPONENT_THRESHOLD;
         return modulate;
     }
@@ -217,7 +217,7 @@
      * the fragment shader. When this method returns true, the program should
      * be provided with a modulation color.
      */
-    bool setAlpha8Color(const float r, const float g, const float b, const float a) {
+    bool setAlpha8ColorModulate(const float r, const float g, const float b, const float a) {
         modulate = a < COLOR_COMPONENT_THRESHOLD || r > COLOR_COMPONENT_INV_THRESHOLD ||
                 g > COLOR_COMPONENT_INV_THRESHOLD || b > COLOR_COMPONENT_INV_THRESHOLD;
         return modulate;
diff --git a/libs/hwui/SkiaShader.cpp b/libs/hwui/SkiaShader.cpp
index 797ed10..4f2a432 100644
--- a/libs/hwui/SkiaShader.cpp
+++ b/libs/hwui/SkiaShader.cpp
@@ -142,7 +142,7 @@
 }
 
 void SkiaBitmapShader::setupProgram(Program* program, const mat4& modelView,
-        const Snapshot& snapshot, GLuint* textureUnit) {
+        const Snapshot&, GLuint* textureUnit) {
     GLuint textureSlot = (*textureUnit)++;
     Caches::getInstance().activeTexture(textureSlot);
 
@@ -228,7 +228,7 @@
 }
 
 void SkiaLinearGradientShader::setupProgram(Program* program, const mat4& modelView,
-        const Snapshot& snapshot, GLuint* textureUnit) {
+        const Snapshot&, GLuint* textureUnit) {
     if (CC_UNLIKELY(!mIsSimple)) {
         GLuint textureSlot = (*textureUnit)++;
         Caches::getInstance().activeTexture(textureSlot);
@@ -264,7 +264,7 @@
 SkiaCircularGradientShader::SkiaCircularGradientShader(float x, float y, float radius,
         uint32_t* colors, float* positions, int count, SkShader* key, SkShader::TileMode tileMode,
         SkMatrix* matrix, bool blend):
-        SkiaSweepGradientShader(kCircularGradient, x, y, colors, positions, count, key,
+        SkiaSweepGradientShader(kCircularGradient, colors, positions, count, key,
                 tileMode, matrix, blend) {
     SkMatrix unitMatrix;
     toCircularUnitMatrix(x, y, radius, &unitMatrix);
@@ -314,11 +314,12 @@
     mIsSimple = count == 2;
 }
 
-SkiaSweepGradientShader::SkiaSweepGradientShader(Type type, float x, float y, uint32_t* colors,
+SkiaSweepGradientShader::SkiaSweepGradientShader(Type type, uint32_t* colors,
         float* positions, int count, SkShader* key, SkShader::TileMode tileMode,
         SkMatrix* matrix, bool blend):
         SkiaShader(type, key, tileMode, tileMode, matrix, blend),
         mColors(colors), mPositions(positions), mCount(count) {
+    // protected method, that doesn't setup mUnitMatrix - should be handled by subclass
 
     mIsSimple = count == 2 && tileMode == SkShader::kClamp_TileMode;
 }
diff --git a/libs/hwui/SkiaShader.h b/libs/hwui/SkiaShader.h
index a63431c..9fc99a4 100644
--- a/libs/hwui/SkiaShader.h
+++ b/libs/hwui/SkiaShader.h
@@ -192,7 +192,7 @@
             GLuint* textureUnit);
 
 protected:
-    SkiaSweepGradientShader(Type type, float x, float y, uint32_t* colors, float* positions,
+    SkiaSweepGradientShader(Type type, uint32_t* colors, float* positions,
             int count, SkShader* key, SkShader::TileMode tileMode, SkMatrix* matrix, bool blend);
     SkiaSweepGradientShader() {
     }
diff --git a/libs/hwui/TextDropShadowCache.cpp b/libs/hwui/TextDropShadowCache.cpp
index 0b2c130..6f27b36 100644
--- a/libs/hwui/TextDropShadowCache.cpp
+++ b/libs/hwui/TextDropShadowCache.cpp
@@ -147,7 +147,7 @@
 // Callbacks
 ///////////////////////////////////////////////////////////////////////////////
 
-void TextDropShadowCache::operator()(ShadowText& text, ShadowTexture*& texture) {
+void TextDropShadowCache::operator()(ShadowText&, ShadowTexture*& texture) {
     if (texture) {
         mSize -= texture->bitmapSize;
 
diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
index ed0a79a..a56eb33 100644
--- a/libs/hwui/TextureCache.cpp
+++ b/libs/hwui/TextureCache.cpp
@@ -103,7 +103,7 @@
 // Callbacks
 ///////////////////////////////////////////////////////////////////////////////
 
-void TextureCache::operator()(SkBitmap*& bitmap, Texture*& texture) {
+void TextureCache::operator()(SkBitmap*&, Texture*& texture) {
     // This will be called already locked
     if (texture) {
         mSize -= texture->bitmapSize;
diff --git a/libs/hwui/font/CacheTexture.cpp b/libs/hwui/font/CacheTexture.cpp
index d5f38b5..24ffb80 100644
--- a/libs/hwui/font/CacheTexture.cpp
+++ b/libs/hwui/font/CacheTexture.cpp
@@ -114,7 +114,7 @@
             mMesh(NULL), mCurrentQuad(0), mMaxQuadCount(maxQuadCount),
             mCaches(Caches::getInstance()) {
     mCacheBlocks = new CacheBlock(TEXTURE_BORDER_SIZE, TEXTURE_BORDER_SIZE,
-            mWidth - TEXTURE_BORDER_SIZE, mHeight - TEXTURE_BORDER_SIZE, true);
+            mWidth - TEXTURE_BORDER_SIZE, mHeight - TEXTURE_BORDER_SIZE);
 
     // OpenGL ES 3.0+ lets us specify the row length for unpack operations such
     // as glTexSubImage2D(). This allows us to upload a sub-rectangle of a texture.
@@ -143,7 +143,7 @@
     // reset, then create a new remainder space to start again
     reset();
     mCacheBlocks = new CacheBlock(TEXTURE_BORDER_SIZE, TEXTURE_BORDER_SIZE,
-            mWidth - TEXTURE_BORDER_SIZE, mHeight - TEXTURE_BORDER_SIZE, true);
+            mWidth - TEXTURE_BORDER_SIZE, mHeight - TEXTURE_BORDER_SIZE);
 }
 
 void CacheTexture::releaseMesh() {
diff --git a/libs/hwui/font/CacheTexture.h b/libs/hwui/font/CacheTexture.h
index 61b38f8..4cc4f22 100644
--- a/libs/hwui/font/CacheTexture.h
+++ b/libs/hwui/font/CacheTexture.h
@@ -54,7 +54,7 @@
     CacheBlock* mNext;
     CacheBlock* mPrev;
 
-    CacheBlock(uint16_t x, uint16_t y, uint16_t width, uint16_t height, bool empty = false):
+    CacheBlock(uint16_t x, uint16_t y, uint16_t width, uint16_t height):
             mX(x), mY(y), mWidth(width), mHeight(height), mNext(NULL), mPrev(NULL) {
     }