Add size change notifications to GrResourceCache

include/gpu/GrTexture.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTexture_DEFINED
 #define GrTexture_DEFINED
@@ skipping 26 matching lines @@
     void setFlag(GrTextureFlags flags) {
         fDesc.fFlags = fDesc.fFlags | flags;
     }
     void resetFlag(GrTextureFlags flags) {
         fDesc.fFlags = fDesc.fFlags & ~flags;
     }
     bool isSetFlag(GrTextureFlags flags) const {
         return 0 != (fDesc.fFlags & flags);
     }
 
-    void dirtyMipMaps(bool mipMapsDirty) {
-        fMipMapsDirty = mipMapsDirty;
-    }
+    void dirtyMipMaps(bool mipMapsDirty);
 
     bool mipMapsAreDirty() const {
-        return fMipMapsDirty;
+        return kValid_MipMapsStatus != fMipMapsStatus;
     }
 
     /**
      *  Approximate number of bytes used by the texture
      */
-    virtual size_t gpuMemorySize() const SK_OVERRIDE {
-        return (size_t) fDesc.fWidth *
-                        fDesc.fHeight *
-                        GrBytesPerPixel(fDesc.fConfig);
-    }
+    virtual size_t gpuMemorySize() const SK_OVERRIDE;
 
     // GrSurface overrides
     virtual bool readPixels(int left, int top, int width, int height,
                             GrPixelConfig config,
                             void* buffer,
                             size_t rowBytes = 0,
                             uint32_t pixelOpsFlags = 0) SK_OVERRIDE;
 
     virtual void writePixels(int left, int top, int width, int height,
                              GrPixelConfig config,
@@ skipping 64 matching lines @@
     static bool NeedsBilerp(const GrResourceKey& key);
 
 protected:
     // A texture refs its rt representation but not vice-versa. It is up to
     // the subclass constructor to initialize this pointer.
     SkAutoTUnref<GrRenderTarget> fRenderTarget;
 
     GrTexture(GrGpu* gpu, bool isWrapped, const GrTextureDesc& desc)
     : INHERITED(gpu, isWrapped, desc)
     , fRenderTarget(NULL)
-    , fMipMapsDirty(true) {
+    , fMipMapsStatus(kNotAllocated_MipMapsStatus) {
 
         // only make sense if alloc size is pow2
         fShiftFixedX = 31 - SkCLZ(fDesc.fWidth);
         fShiftFixedY = 31 - SkCLZ(fDesc.fHeight);
     }
     virtual ~GrTexture();
 
     // GrResource overrides
     virtual void onRelease() SK_OVERRIDE;
     virtual void onAbandon() SK_OVERRIDE;
 
     void validateDesc() const;
 
 private:
+    enum MipMapsStatus {
+        kNotAllocated_MipMapsStatus,
+        kAllocated_MipMapsStatus,
+        kValid_MipMapsStatus
+    };
+
     // these two shift a fixed-point value into normalized coordinates
     // for this texture if the texture is power of two sized.
     int                 fShiftFixedX;
     int                 fShiftFixedY;
 
-    bool                fMipMapsDirty;
+    MipMapsStatus       fMipMapsStatus;
 
     virtual void internal_dispose() const SK_OVERRIDE;
 
     typedef GrSurface INHERITED;
 };
 
 /**
  * Represents a texture that is intended to be accessed in device coords with an offset.
  */
 class GrDeviceCoordTexture {
@@ skipping 25 matching lines @@
     GrTexture* setTexture(GrTexture* texture) {
         fTexture.reset(SkSafeRef(texture));
         return texture;
     }
 private:
     SkAutoTUnref<GrTexture> fTexture;
     SkIPoint                fOffset;
 };
 
 #endif